various ¶
Classes:
-
BlackMan
–Blackman resizer.
-
BlackManMinLobe
–Blackmanminlobe resizer.
-
Bohman
–Bohman kernel.
-
Box
–Box resizer.
-
Cosine
–Cosine kernel.
-
CustomBilinear
–Bilinear resizer using the
CustomKernel
class. -
CustomLanczos
–Lanczos resizer using the
CustomKernel
class. -
CustomPoint
–Point resizer using the
CustomKernel
class. -
Gaussian
–Gaussian resizer.
-
Hamming
–Hamming kernel.
-
Hann
–Hann kernel.
-
Sinc
–Sinc resizer.
-
Welch
–Welch kernel.
BlackMan ¶
Bases: CustomComplexTapsKernel
Blackman resizer.
Classes:
-
cached_property
–Read only version of functools.cached_property.
Methods:
-
descale
–Descale a clip to the given resolution, with image borders handling and sampling grid alignment,
-
descale_function
– -
ensure_obj
–Ensure that the given kernel input is returned as a kernel instance.
-
from_param
–Resolve and return a kernel class from a string name, class type, or instance.
-
get_descale_args
–Generate and normalize argument dictionary for a descale operation.
-
get_params_args
–Generate a base set of parameters to pass for scaling, descaling, or resampling.
-
get_resample_args
–Generate and normalize argument dictionary for a resample operation.
-
get_rescale_args
–Generate and normalize argument dictionary for a rescale operation.
-
get_scale_args
–Generate and normalize argument dictionary for a scale operation.
-
kernel
– -
kernel_radius
–Compute the effective kernel radius based on the number of taps.
-
multi
–Deprecated alias for
supersample
. -
pretty_string
–Cached property returning a user-friendly string representation.
-
resample
–Resample a video clip to the given format.
-
resample_function
– -
rescale
–Rescale a clip to the given resolution from a previously descaled clip,
-
rescale_function
– -
scale
–Scale a clip to the given resolution, with aspect ratio and linear light support.
-
scale_function
– -
shift
–Apply a subpixel shift to the clip using the kernel's scaling logic.
-
supersample
–Supersample a clip by a given scaling factor.
Attributes:
-
kwargs
(dict[str, Any]
) –Arguments passed to the implemented funcs or internal scale function.
-
taps
–
Source code
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|
kwargs instance-attribute
¶
Arguments passed to the implemented funcs or internal scale function.
cached_property ¶
cached_property(func: Callable[Concatenate[_BaseScalerT, P], T_co])
Bases: cached_property[T_co]
Read only version of functools.cached_property.
Source code
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|
descale ¶
descale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Descale a clip to the given resolution, with image borders handling and sampling grid alignment, optionally using linear light processing.
Supports both progressive and interlaced sources. When interlaced, it will separate fields, perform per-field descaling, and weave them back.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target descaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target descaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during descaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
descale_function
.
Returns:
-
ConstantFormatVideoNode
–The descaled video node, optionally processed in linear light.
Source code
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|
descale_function ¶
descale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
ensure_obj classmethod
¶
ensure_obj(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> Self
Ensure that the given kernel input is returned as a kernel instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel name, class, or instance. Defaults to current class if None.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
Self
–The resolved and instantiated kernel.
Source code
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|
from_param classmethod
¶
from_param(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> type[Self]
Resolve and return a kernel class from a string name, class type, or instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel identifier as a string, class type, or instance. If None, defaults to the current class.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
type[Self]
–The resolved kernel class.
Raises:
-
UnknownKernelError
–If the kernel could not be identified.
Source code
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|
get_descale_args ¶
get_descale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a descale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the descale function.
Returns:
Source code
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|
get_params_args ¶
get_params_args(
is_descale: bool,
clip: VideoNode,
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate a base set of parameters to pass for scaling, descaling, or resampling.
Parameters:
-
is_descale
¶bool
) –Whether this is for a descale operation.
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments to include.
Returns:
Source code
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|
get_resample_args ¶
get_resample_args(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None,
matrix_in: MatrixT | None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a resample operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
) –Target color matrix.
-
matrix_in
¶MatrixT | None
) –Source color matrix.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the resample function.
Returns:
Source code
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|
get_rescale_args ¶
get_rescale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a rescale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the rescale function.
Returns:
Source code
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|
get_scale_args ¶
get_scale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a scale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the scale function.
Returns:
Source code
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|
kernel ¶
Source code
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|
kernel_radius ¶
kernel_radius() -> int
Compute the effective kernel radius based on the number of taps.
Returns:
-
int
–Radius as the ceiling of
taps
.
Source code
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|
multi ¶
multi(
clip: VideoNodeT,
multi: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Deprecated alias for supersample
.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
multi
¶float
, default:2.0
) –Supersampling factor.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Source code
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|
pretty_string ¶
pretty_string() -> str
Cached property returning a user-friendly string representation.
Returns:
-
str
–Pretty-printed string with arguments.
Source code
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|
resample ¶
resample(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None = None,
matrix_in: MatrixT | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Resample a video clip to the given format.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
, default:None
) –An optional color transformation matrix to apply.
-
matrix_in
¶MatrixT | None
, default:None
) –An optional input matrix for color transformations.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments passed to the
resample_function
.
Returns:
-
ConstantFormatVideoNode
–The resampled clip.
Source code
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|
resample_function ¶
resample_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
rescale ¶
rescale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Rescale a clip to the given resolution from a previously descaled clip, with image borders handling and sampling grid alignment, optionally using linear light processing.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target scaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target scaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before rescaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during rescaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during rescaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
rescale_function
.
Returns:
-
ConstantFormatVideoNode
–The scaled clip.
Source code
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|
rescale_function ¶
rescale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
scale ¶
scale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]] = (
0,
0,
),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: BorderHandling = MIRROR,
sample_grid_model: SampleGridModel = MATCH_EDGES,
sar: Sar | float | bool | None = None,
dar: Dar | float | bool | None = None,
dar_in: Dar | bool | float | None = None,
keep_ar: bool | None = None,
blur: float | None = None,
**kwargs: Any
) -> VideoNode | ConstantFormatVideoNode
Scale a clip to the given resolution, with aspect ratio and linear light support.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target height (defaults to clip height if None).
-
shift
¶tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling. If a tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
sar
¶Sar | float | bool | None
, default:None
) –Sample aspect ratio to assume or convert to.
-
dar
¶Dar | float | bool | None
, default:None
) –Desired display aspect ratio.
-
dar_in
¶Dar | bool | float | None
, default:None
) –Input display aspect ratio, if different from clip's.
-
keep_ar
¶bool | None
, default:None
) –Whether to adjust dimensions to preserve aspect ratio.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
Returns:
-
VideoNode | ConstantFormatVideoNode
–Scaled clip, optionally aspect-corrected and linearized.
Source code
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|
scale_function ¶
scale_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> VideoNode
Source code
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|
shift ¶
shift(
clip: VideoNode,
shifts_or_top: float | tuple[float, float] | list[float],
shift_left: float | list[float] | None = None,
/,
**kwargs: Any,
) -> ConstantFormatVideoNode
Apply a subpixel shift to the clip using the kernel's scaling logic.
If a single float or tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shifts_or_top
¶float | tuple[float, float] | list[float]
) –Either a single vertical shift, a (top, left) tuple, or a list of vertical shifts.
-
shift_left
¶float | list[float] | None
, default:None
) –Horizontal shift or list of horizontal shifts. Ignored if
shifts_or_top
is a tuple. -
kwargs
¶Any
, default:{}
) –Additional arguments passed to the internal
scale
call.
Returns:
-
ConstantFormatVideoNode
–A new clip with the applied shift.
Raises:
-
VariableFormatError
–If the input clip has variable format.
-
CustomValueError
–If the input clip is GRAY but lists of shift has been passed.
Source code
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|
supersample ¶
supersample(
clip: VideoNodeT,
rfactor: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Supersample a clip by a given scaling factor.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
rfactor
¶float
, default:2.0
) –Scaling factor for supersampling.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Raises:
-
CustomValueError
–If resulting resolution is non-positive.
Source code
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|
BlackManMinLobe ¶
Bases: BlackMan
Blackmanminlobe resizer.
Classes:
-
cached_property
–Read only version of functools.cached_property.
Methods:
-
descale
–Descale a clip to the given resolution, with image borders handling and sampling grid alignment,
-
descale_function
– -
ensure_obj
–Ensure that the given kernel input is returned as a kernel instance.
-
from_param
–Resolve and return a kernel class from a string name, class type, or instance.
-
get_descale_args
–Generate and normalize argument dictionary for a descale operation.
-
get_params_args
–Generate a base set of parameters to pass for scaling, descaling, or resampling.
-
get_resample_args
–Generate and normalize argument dictionary for a resample operation.
-
get_rescale_args
–Generate and normalize argument dictionary for a rescale operation.
-
get_scale_args
–Generate and normalize argument dictionary for a scale operation.
-
kernel
– -
kernel_radius
–Compute the effective kernel radius based on the number of taps.
-
multi
–Deprecated alias for
supersample
. -
pretty_string
–Cached property returning a user-friendly string representation.
-
resample
–Resample a video clip to the given format.
-
resample_function
– -
rescale
–Rescale a clip to the given resolution from a previously descaled clip,
-
rescale_function
– -
scale
–Scale a clip to the given resolution, with aspect ratio and linear light support.
-
scale_function
– -
shift
–Apply a subpixel shift to the clip using the kernel's scaling logic.
-
supersample
–Supersample a clip by a given scaling factor.
Attributes:
-
kwargs
(dict[str, Any]
) –Arguments passed to the implemented funcs or internal scale function.
-
taps
–
Source code
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|
kwargs instance-attribute
¶
Arguments passed to the implemented funcs or internal scale function.
cached_property ¶
cached_property(func: Callable[Concatenate[_BaseScalerT, P], T_co])
Bases: cached_property[T_co]
Read only version of functools.cached_property.
Source code
265 |
|
descale ¶
descale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Descale a clip to the given resolution, with image borders handling and sampling grid alignment, optionally using linear light processing.
Supports both progressive and interlaced sources. When interlaced, it will separate fields, perform per-field descaling, and weave them back.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target descaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target descaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during descaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
descale_function
.
Returns:
-
ConstantFormatVideoNode
–The descaled video node, optionally processed in linear light.
Source code
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|
descale_function ¶
descale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
ensure_obj classmethod
¶
ensure_obj(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> Self
Ensure that the given kernel input is returned as a kernel instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel name, class, or instance. Defaults to current class if None.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
Self
–The resolved and instantiated kernel.
Source code
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|
from_param classmethod
¶
from_param(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> type[Self]
Resolve and return a kernel class from a string name, class type, or instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel identifier as a string, class type, or instance. If None, defaults to the current class.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
type[Self]
–The resolved kernel class.
Raises:
-
UnknownKernelError
–If the kernel could not be identified.
Source code
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|
get_descale_args ¶
get_descale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a descale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the descale function.
Returns:
Source code
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|
get_params_args ¶
get_params_args(
is_descale: bool,
clip: VideoNode,
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate a base set of parameters to pass for scaling, descaling, or resampling.
Parameters:
-
is_descale
¶bool
) –Whether this is for a descale operation.
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments to include.
Returns:
Source code
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|
get_resample_args ¶
get_resample_args(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None,
matrix_in: MatrixT | None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a resample operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
) –Target color matrix.
-
matrix_in
¶MatrixT | None
) –Source color matrix.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the resample function.
Returns:
Source code
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|
get_rescale_args ¶
get_rescale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a rescale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the rescale function.
Returns:
Source code
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|
get_scale_args ¶
get_scale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a scale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the scale function.
Returns:
Source code
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|
kernel ¶
Source code
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|
kernel_radius ¶
kernel_radius() -> int
Compute the effective kernel radius based on the number of taps.
Returns:
-
int
–Radius as the ceiling of
taps
.
Source code
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|
multi ¶
multi(
clip: VideoNodeT,
multi: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Deprecated alias for supersample
.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
multi
¶float
, default:2.0
) –Supersampling factor.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Source code
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|
pretty_string ¶
pretty_string() -> str
Cached property returning a user-friendly string representation.
Returns:
-
str
–Pretty-printed string with arguments.
Source code
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|
resample ¶
resample(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None = None,
matrix_in: MatrixT | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Resample a video clip to the given format.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
, default:None
) –An optional color transformation matrix to apply.
-
matrix_in
¶MatrixT | None
, default:None
) –An optional input matrix for color transformations.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments passed to the
resample_function
.
Returns:
-
ConstantFormatVideoNode
–The resampled clip.
Source code
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|
resample_function ¶
resample_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
rescale ¶
rescale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Rescale a clip to the given resolution from a previously descaled clip, with image borders handling and sampling grid alignment, optionally using linear light processing.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target scaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target scaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before rescaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during rescaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during rescaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
rescale_function
.
Returns:
-
ConstantFormatVideoNode
–The scaled clip.
Source code
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|
rescale_function ¶
rescale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
scale ¶
scale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]] = (
0,
0,
),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: BorderHandling = MIRROR,
sample_grid_model: SampleGridModel = MATCH_EDGES,
sar: Sar | float | bool | None = None,
dar: Dar | float | bool | None = None,
dar_in: Dar | bool | float | None = None,
keep_ar: bool | None = None,
blur: float | None = None,
**kwargs: Any
) -> VideoNode | ConstantFormatVideoNode
Scale a clip to the given resolution, with aspect ratio and linear light support.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target height (defaults to clip height if None).
-
shift
¶tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling. If a tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
sar
¶Sar | float | bool | None
, default:None
) –Sample aspect ratio to assume or convert to.
-
dar
¶Dar | float | bool | None
, default:None
) –Desired display aspect ratio.
-
dar_in
¶Dar | bool | float | None
, default:None
) –Input display aspect ratio, if different from clip's.
-
keep_ar
¶bool | None
, default:None
) –Whether to adjust dimensions to preserve aspect ratio.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
Returns:
-
VideoNode | ConstantFormatVideoNode
–Scaled clip, optionally aspect-corrected and linearized.
Source code
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|
scale_function ¶
scale_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> VideoNode
Source code
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|
shift ¶
shift(
clip: VideoNode,
shifts_or_top: float | tuple[float, float] | list[float],
shift_left: float | list[float] | None = None,
/,
**kwargs: Any,
) -> ConstantFormatVideoNode
Apply a subpixel shift to the clip using the kernel's scaling logic.
If a single float or tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shifts_or_top
¶float | tuple[float, float] | list[float]
) –Either a single vertical shift, a (top, left) tuple, or a list of vertical shifts.
-
shift_left
¶float | list[float] | None
, default:None
) –Horizontal shift or list of horizontal shifts. Ignored if
shifts_or_top
is a tuple. -
kwargs
¶Any
, default:{}
) –Additional arguments passed to the internal
scale
call.
Returns:
-
ConstantFormatVideoNode
–A new clip with the applied shift.
Raises:
-
VariableFormatError
–If the input clip has variable format.
-
CustomValueError
–If the input clip is GRAY but lists of shift has been passed.
Source code
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|
supersample ¶
supersample(
clip: VideoNodeT,
rfactor: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Supersample a clip by a given scaling factor.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
rfactor
¶float
, default:2.0
) –Scaling factor for supersampling.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Raises:
-
CustomValueError
–If resulting resolution is non-positive.
Source code
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|
Bohman ¶
Bases: CustomComplexTapsKernel
Bohman kernel.
Initialize the kernel with a specific number of taps and optional keyword arguments.
These keyword arguments are automatically forwarded to the _implemented_funcs
methods but only if the method explicitly accepts them as named parameters. If the same keyword is passed to both __init__
and one of the _implemented_funcs
, the one passed to func
takes precedence.
Parameters:
-
taps
¶float
) –Determines the radius of the kernel.
-
kwargs
¶Any
, default:{}
) –Keyword arguments that configure the internal scaling behavior.
Classes:
-
cached_property
–Read only version of functools.cached_property.
Methods:
-
descale
–Descale a clip to the given resolution, with image borders handling and sampling grid alignment,
-
descale_function
– -
ensure_obj
–Ensure that the given kernel input is returned as a kernel instance.
-
from_param
–Resolve and return a kernel class from a string name, class type, or instance.
-
get_descale_args
–Generate and normalize argument dictionary for a descale operation.
-
get_params_args
–Generate a base set of parameters to pass for scaling, descaling, or resampling.
-
get_resample_args
–Generate and normalize argument dictionary for a resample operation.
-
get_rescale_args
–Generate and normalize argument dictionary for a rescale operation.
-
get_scale_args
–Generate and normalize argument dictionary for a scale operation.
-
kernel
– -
kernel_radius
–Compute the effective kernel radius based on the number of taps.
-
multi
–Deprecated alias for
supersample
. -
pretty_string
–Cached property returning a user-friendly string representation.
-
resample
–Resample a video clip to the given format.
-
resample_function
– -
rescale
–Rescale a clip to the given resolution from a previously descaled clip,
-
rescale_function
– -
scale
–Scale a clip to the given resolution, with aspect ratio and linear light support.
-
scale_function
– -
shift
–Apply a subpixel shift to the clip using the kernel's scaling logic.
-
supersample
–Supersample a clip by a given scaling factor.
Attributes:
-
kwargs
(dict[str, Any]
) –Arguments passed to the implemented funcs or internal scale function.
-
taps
–
Source code
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|
kwargs instance-attribute
¶
Arguments passed to the implemented funcs or internal scale function.
cached_property ¶
cached_property(func: Callable[Concatenate[_BaseScalerT, P], T_co])
Bases: cached_property[T_co]
Read only version of functools.cached_property.
Source code
265 |
|
descale ¶
descale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Descale a clip to the given resolution, with image borders handling and sampling grid alignment, optionally using linear light processing.
Supports both progressive and interlaced sources. When interlaced, it will separate fields, perform per-field descaling, and weave them back.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target descaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target descaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during descaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
descale_function
.
Returns:
-
ConstantFormatVideoNode
–The descaled video node, optionally processed in linear light.
Source code
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|
descale_function ¶
descale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
ensure_obj classmethod
¶
ensure_obj(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> Self
Ensure that the given kernel input is returned as a kernel instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel name, class, or instance. Defaults to current class if None.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
Self
–The resolved and instantiated kernel.
Source code
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|
from_param classmethod
¶
from_param(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> type[Self]
Resolve and return a kernel class from a string name, class type, or instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel identifier as a string, class type, or instance. If None, defaults to the current class.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
type[Self]
–The resolved kernel class.
Raises:
-
UnknownKernelError
–If the kernel could not be identified.
Source code
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|
get_descale_args ¶
get_descale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a descale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the descale function.
Returns:
Source code
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|
get_params_args ¶
get_params_args(
is_descale: bool,
clip: VideoNode,
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate a base set of parameters to pass for scaling, descaling, or resampling.
Parameters:
-
is_descale
¶bool
) –Whether this is for a descale operation.
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments to include.
Returns:
Source code
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|
get_resample_args ¶
get_resample_args(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None,
matrix_in: MatrixT | None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a resample operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
) –Target color matrix.
-
matrix_in
¶MatrixT | None
) –Source color matrix.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the resample function.
Returns:
Source code
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|
get_rescale_args ¶
get_rescale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a rescale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the rescale function.
Returns:
Source code
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|
get_scale_args ¶
get_scale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a scale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the scale function.
Returns:
Source code
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|
kernel ¶
Source code
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|
kernel_radius ¶
kernel_radius() -> int
Compute the effective kernel radius based on the number of taps.
Returns:
-
int
–Radius as the ceiling of
taps
.
Source code
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|
multi ¶
multi(
clip: VideoNodeT,
multi: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Deprecated alias for supersample
.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
multi
¶float
, default:2.0
) –Supersampling factor.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Source code
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|
pretty_string ¶
pretty_string() -> str
Cached property returning a user-friendly string representation.
Returns:
-
str
–Pretty-printed string with arguments.
Source code
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|
resample ¶
resample(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None = None,
matrix_in: MatrixT | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Resample a video clip to the given format.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
, default:None
) –An optional color transformation matrix to apply.
-
matrix_in
¶MatrixT | None
, default:None
) –An optional input matrix for color transformations.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments passed to the
resample_function
.
Returns:
-
ConstantFormatVideoNode
–The resampled clip.
Source code
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|
resample_function ¶
resample_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
rescale ¶
rescale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Rescale a clip to the given resolution from a previously descaled clip, with image borders handling and sampling grid alignment, optionally using linear light processing.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target scaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target scaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before rescaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during rescaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during rescaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
rescale_function
.
Returns:
-
ConstantFormatVideoNode
–The scaled clip.
Source code
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|
rescale_function ¶
rescale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
scale ¶
scale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]] = (
0,
0,
),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: BorderHandling = MIRROR,
sample_grid_model: SampleGridModel = MATCH_EDGES,
sar: Sar | float | bool | None = None,
dar: Dar | float | bool | None = None,
dar_in: Dar | bool | float | None = None,
keep_ar: bool | None = None,
blur: float | None = None,
**kwargs: Any
) -> VideoNode | ConstantFormatVideoNode
Scale a clip to the given resolution, with aspect ratio and linear light support.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target height (defaults to clip height if None).
-
shift
¶tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling. If a tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
sar
¶Sar | float | bool | None
, default:None
) –Sample aspect ratio to assume or convert to.
-
dar
¶Dar | float | bool | None
, default:None
) –Desired display aspect ratio.
-
dar_in
¶Dar | bool | float | None
, default:None
) –Input display aspect ratio, if different from clip's.
-
keep_ar
¶bool | None
, default:None
) –Whether to adjust dimensions to preserve aspect ratio.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
Returns:
-
VideoNode | ConstantFormatVideoNode
–Scaled clip, optionally aspect-corrected and linearized.
Source code
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|
scale_function ¶
scale_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> VideoNode
Source code
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|
shift ¶
shift(
clip: VideoNode,
shifts_or_top: float | tuple[float, float] | list[float],
shift_left: float | list[float] | None = None,
/,
**kwargs: Any,
) -> ConstantFormatVideoNode
Apply a subpixel shift to the clip using the kernel's scaling logic.
If a single float or tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shifts_or_top
¶float | tuple[float, float] | list[float]
) –Either a single vertical shift, a (top, left) tuple, or a list of vertical shifts.
-
shift_left
¶float | list[float] | None
, default:None
) –Horizontal shift or list of horizontal shifts. Ignored if
shifts_or_top
is a tuple. -
kwargs
¶Any
, default:{}
) –Additional arguments passed to the internal
scale
call.
Returns:
-
ConstantFormatVideoNode
–A new clip with the applied shift.
Raises:
-
VariableFormatError
–If the input clip has variable format.
-
CustomValueError
–If the input clip is GRAY but lists of shift has been passed.
Source code
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|
supersample ¶
supersample(
clip: VideoNodeT,
rfactor: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Supersample a clip by a given scaling factor.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
rfactor
¶float
, default:2.0
) –Scaling factor for supersampling.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Raises:
-
CustomValueError
–If resulting resolution is non-positive.
Source code
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|
Box ¶
Box(**kwargs: Any)
Bases: CustomComplexKernel
Box resizer.
Initialize the scaler with optional keyword arguments.
These keyword arguments are automatically forwarded to the _implemented_funcs
methods but only if the method explicitly accepts them as named parameters. If the same keyword is passed to both __init__
and one of the _implemented_funcs
, the one passed to func
takes precedence.
Parameters:
Classes:
-
cached_property
–Read only version of functools.cached_property.
Methods:
-
descale
–Descale a clip to the given resolution, with image borders handling and sampling grid alignment,
-
descale_function
– -
ensure_obj
–Ensure that the given kernel input is returned as a kernel instance.
-
from_param
–Resolve and return a kernel class from a string name, class type, or instance.
-
get_descale_args
–Generate and normalize argument dictionary for a descale operation.
-
get_params_args
–Generate a base set of parameters to pass for scaling, descaling, or resampling.
-
get_resample_args
–Generate and normalize argument dictionary for a resample operation.
-
get_rescale_args
–Generate and normalize argument dictionary for a rescale operation.
-
get_scale_args
–Generate and normalize argument dictionary for a scale operation.
-
kernel
– -
kernel_radius
–Return the effective kernel radius for the scaler.
-
multi
–Deprecated alias for
supersample
. -
pretty_string
–Cached property returning a user-friendly string representation.
-
resample
–Resample a video clip to the given format.
-
resample_function
– -
rescale
–Rescale a clip to the given resolution from a previously descaled clip,
-
rescale_function
– -
scale
–Scale a clip to the given resolution, with aspect ratio and linear light support.
-
scale_function
– -
shift
–Apply a subpixel shift to the clip using the kernel's scaling logic.
-
supersample
–Supersample a clip by a given scaling factor.
Attributes:
Source code
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|
kwargs instance-attribute
¶
Arguments passed to the implemented funcs or internal scale function.
cached_property ¶
cached_property(func: Callable[Concatenate[_BaseScalerT, P], T_co])
Bases: cached_property[T_co]
Read only version of functools.cached_property.
Source code
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|
descale ¶
descale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Descale a clip to the given resolution, with image borders handling and sampling grid alignment, optionally using linear light processing.
Supports both progressive and interlaced sources. When interlaced, it will separate fields, perform per-field descaling, and weave them back.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target descaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target descaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during descaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
descale_function
.
Returns:
-
ConstantFormatVideoNode
–The descaled video node, optionally processed in linear light.
Source code
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|
descale_function ¶
descale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
ensure_obj classmethod
¶
ensure_obj(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> Self
Ensure that the given kernel input is returned as a kernel instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel name, class, or instance. Defaults to current class if None.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
Self
–The resolved and instantiated kernel.
Source code
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|
from_param classmethod
¶
from_param(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> type[Self]
Resolve and return a kernel class from a string name, class type, or instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel identifier as a string, class type, or instance. If None, defaults to the current class.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
type[Self]
–The resolved kernel class.
Raises:
-
UnknownKernelError
–If the kernel could not be identified.
Source code
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|
get_descale_args ¶
get_descale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a descale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the descale function.
Returns:
Source code
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|
get_params_args ¶
get_params_args(
is_descale: bool,
clip: VideoNode,
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate a base set of parameters to pass for scaling, descaling, or resampling.
Parameters:
-
is_descale
¶bool
) –Whether this is for a descale operation.
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments to include.
Returns:
Source code
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|
get_resample_args ¶
get_resample_args(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None,
matrix_in: MatrixT | None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a resample operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
) –Target color matrix.
-
matrix_in
¶MatrixT | None
) –Source color matrix.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the resample function.
Returns:
Source code
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|
get_rescale_args ¶
get_rescale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a rescale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the rescale function.
Returns:
Source code
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|
get_scale_args ¶
get_scale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a scale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the scale function.
Returns:
Source code
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|
kernel ¶
Source code
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|
kernel_radius ¶
kernel_radius() -> int
Return the effective kernel radius for the scaler.
Returns:
-
int
–Kernel radius.
Raises:
-
CustomNotImplementedError
–If no kernel radius is defined.
Source code
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|
multi ¶
multi(
clip: VideoNodeT,
multi: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Deprecated alias for supersample
.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
multi
¶float
, default:2.0
) –Supersampling factor.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Source code
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|
pretty_string ¶
pretty_string() -> str
Cached property returning a user-friendly string representation.
Returns:
-
str
–Pretty-printed string with arguments.
Source code
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|
resample ¶
resample(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None = None,
matrix_in: MatrixT | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Resample a video clip to the given format.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
, default:None
) –An optional color transformation matrix to apply.
-
matrix_in
¶MatrixT | None
, default:None
) –An optional input matrix for color transformations.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments passed to the
resample_function
.
Returns:
-
ConstantFormatVideoNode
–The resampled clip.
Source code
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|
resample_function ¶
resample_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
rescale ¶
rescale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Rescale a clip to the given resolution from a previously descaled clip, with image borders handling and sampling grid alignment, optionally using linear light processing.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target scaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target scaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before rescaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during rescaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during rescaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
rescale_function
.
Returns:
-
ConstantFormatVideoNode
–The scaled clip.
Source code
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|
rescale_function ¶
rescale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
scale ¶
scale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]] = (
0,
0,
),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: BorderHandling = MIRROR,
sample_grid_model: SampleGridModel = MATCH_EDGES,
sar: Sar | float | bool | None = None,
dar: Dar | float | bool | None = None,
dar_in: Dar | bool | float | None = None,
keep_ar: bool | None = None,
blur: float | None = None,
**kwargs: Any
) -> VideoNode | ConstantFormatVideoNode
Scale a clip to the given resolution, with aspect ratio and linear light support.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target height (defaults to clip height if None).
-
shift
¶tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling. If a tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
sar
¶Sar | float | bool | None
, default:None
) –Sample aspect ratio to assume or convert to.
-
dar
¶Dar | float | bool | None
, default:None
) –Desired display aspect ratio.
-
dar_in
¶Dar | bool | float | None
, default:None
) –Input display aspect ratio, if different from clip's.
-
keep_ar
¶bool | None
, default:None
) –Whether to adjust dimensions to preserve aspect ratio.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
Returns:
-
VideoNode | ConstantFormatVideoNode
–Scaled clip, optionally aspect-corrected and linearized.
Source code
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|
scale_function ¶
scale_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> VideoNode
Source code
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|
shift ¶
shift(
clip: VideoNode,
shifts_or_top: float | tuple[float, float] | list[float],
shift_left: float | list[float] | None = None,
/,
**kwargs: Any,
) -> ConstantFormatVideoNode
Apply a subpixel shift to the clip using the kernel's scaling logic.
If a single float or tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shifts_or_top
¶float | tuple[float, float] | list[float]
) –Either a single vertical shift, a (top, left) tuple, or a list of vertical shifts.
-
shift_left
¶float | list[float] | None
, default:None
) –Horizontal shift or list of horizontal shifts. Ignored if
shifts_or_top
is a tuple. -
kwargs
¶Any
, default:{}
) –Additional arguments passed to the internal
scale
call.
Returns:
-
ConstantFormatVideoNode
–A new clip with the applied shift.
Raises:
-
VariableFormatError
–If the input clip has variable format.
-
CustomValueError
–If the input clip is GRAY but lists of shift has been passed.
Source code
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|
supersample ¶
supersample(
clip: VideoNodeT,
rfactor: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Supersample a clip by a given scaling factor.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
rfactor
¶float
, default:2.0
) –Scaling factor for supersampling.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Raises:
-
CustomValueError
–If resulting resolution is non-positive.
Source code
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|
Cosine ¶
Bases: CustomComplexTapsKernel
Cosine kernel.
Initialize the kernel with a specific number of taps and optional keyword arguments.
These keyword arguments are automatically forwarded to the _implemented_funcs
methods but only if the method explicitly accepts them as named parameters. If the same keyword is passed to both __init__
and one of the _implemented_funcs
, the one passed to func
takes precedence.
Parameters:
-
taps
¶float
) –Determines the radius of the kernel.
-
kwargs
¶Any
, default:{}
) –Keyword arguments that configure the internal scaling behavior.
Classes:
-
cached_property
–Read only version of functools.cached_property.
Methods:
-
descale
–Descale a clip to the given resolution, with image borders handling and sampling grid alignment,
-
descale_function
– -
ensure_obj
–Ensure that the given kernel input is returned as a kernel instance.
-
from_param
–Resolve and return a kernel class from a string name, class type, or instance.
-
get_descale_args
–Generate and normalize argument dictionary for a descale operation.
-
get_params_args
–Generate a base set of parameters to pass for scaling, descaling, or resampling.
-
get_resample_args
–Generate and normalize argument dictionary for a resample operation.
-
get_rescale_args
–Generate and normalize argument dictionary for a rescale operation.
-
get_scale_args
–Generate and normalize argument dictionary for a scale operation.
-
kernel
– -
kernel_radius
–Compute the effective kernel radius based on the number of taps.
-
multi
–Deprecated alias for
supersample
. -
pretty_string
–Cached property returning a user-friendly string representation.
-
resample
–Resample a video clip to the given format.
-
resample_function
– -
rescale
–Rescale a clip to the given resolution from a previously descaled clip,
-
rescale_function
– -
scale
–Scale a clip to the given resolution, with aspect ratio and linear light support.
-
scale_function
– -
shift
–Apply a subpixel shift to the clip using the kernel's scaling logic.
-
supersample
–Supersample a clip by a given scaling factor.
Attributes:
-
kwargs
(dict[str, Any]
) –Arguments passed to the implemented funcs or internal scale function.
-
taps
–
Source code
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|
kwargs instance-attribute
¶
Arguments passed to the implemented funcs or internal scale function.
cached_property ¶
cached_property(func: Callable[Concatenate[_BaseScalerT, P], T_co])
Bases: cached_property[T_co]
Read only version of functools.cached_property.
Source code
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|
descale ¶
descale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Descale a clip to the given resolution, with image borders handling and sampling grid alignment, optionally using linear light processing.
Supports both progressive and interlaced sources. When interlaced, it will separate fields, perform per-field descaling, and weave them back.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target descaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target descaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during descaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
descale_function
.
Returns:
-
ConstantFormatVideoNode
–The descaled video node, optionally processed in linear light.
Source code
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|
descale_function ¶
descale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
ensure_obj classmethod
¶
ensure_obj(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> Self
Ensure that the given kernel input is returned as a kernel instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel name, class, or instance. Defaults to current class if None.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
Self
–The resolved and instantiated kernel.
Source code
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|
from_param classmethod
¶
from_param(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> type[Self]
Resolve and return a kernel class from a string name, class type, or instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel identifier as a string, class type, or instance. If None, defaults to the current class.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
type[Self]
–The resolved kernel class.
Raises:
-
UnknownKernelError
–If the kernel could not be identified.
Source code
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|
get_descale_args ¶
get_descale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a descale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the descale function.
Returns:
Source code
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|
get_params_args ¶
get_params_args(
is_descale: bool,
clip: VideoNode,
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate a base set of parameters to pass for scaling, descaling, or resampling.
Parameters:
-
is_descale
¶bool
) –Whether this is for a descale operation.
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments to include.
Returns:
Source code
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|
get_resample_args ¶
get_resample_args(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None,
matrix_in: MatrixT | None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a resample operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
) –Target color matrix.
-
matrix_in
¶MatrixT | None
) –Source color matrix.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the resample function.
Returns:
Source code
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|
get_rescale_args ¶
get_rescale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a rescale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the rescale function.
Returns:
Source code
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|
get_scale_args ¶
get_scale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a scale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the scale function.
Returns:
Source code
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|
kernel ¶
Source code
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|
kernel_radius ¶
kernel_radius() -> int
Compute the effective kernel radius based on the number of taps.
Returns:
-
int
–Radius as the ceiling of
taps
.
Source code
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|
multi ¶
multi(
clip: VideoNodeT,
multi: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Deprecated alias for supersample
.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
multi
¶float
, default:2.0
) –Supersampling factor.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Source code
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|
pretty_string ¶
pretty_string() -> str
Cached property returning a user-friendly string representation.
Returns:
-
str
–Pretty-printed string with arguments.
Source code
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|
resample ¶
resample(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None = None,
matrix_in: MatrixT | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Resample a video clip to the given format.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
, default:None
) –An optional color transformation matrix to apply.
-
matrix_in
¶MatrixT | None
, default:None
) –An optional input matrix for color transformations.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments passed to the
resample_function
.
Returns:
-
ConstantFormatVideoNode
–The resampled clip.
Source code
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|
resample_function ¶
resample_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
rescale ¶
rescale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Rescale a clip to the given resolution from a previously descaled clip, with image borders handling and sampling grid alignment, optionally using linear light processing.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target scaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target scaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before rescaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during rescaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during rescaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
rescale_function
.
Returns:
-
ConstantFormatVideoNode
–The scaled clip.
Source code
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|
rescale_function ¶
rescale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
scale ¶
scale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]] = (
0,
0,
),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: BorderHandling = MIRROR,
sample_grid_model: SampleGridModel = MATCH_EDGES,
sar: Sar | float | bool | None = None,
dar: Dar | float | bool | None = None,
dar_in: Dar | bool | float | None = None,
keep_ar: bool | None = None,
blur: float | None = None,
**kwargs: Any
) -> VideoNode | ConstantFormatVideoNode
Scale a clip to the given resolution, with aspect ratio and linear light support.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target height (defaults to clip height if None).
-
shift
¶tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling. If a tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
sar
¶Sar | float | bool | None
, default:None
) –Sample aspect ratio to assume or convert to.
-
dar
¶Dar | float | bool | None
, default:None
) –Desired display aspect ratio.
-
dar_in
¶Dar | bool | float | None
, default:None
) –Input display aspect ratio, if different from clip's.
-
keep_ar
¶bool | None
, default:None
) –Whether to adjust dimensions to preserve aspect ratio.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
Returns:
-
VideoNode | ConstantFormatVideoNode
–Scaled clip, optionally aspect-corrected and linearized.
Source code
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|
scale_function ¶
scale_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> VideoNode
Source code
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|
shift ¶
shift(
clip: VideoNode,
shifts_or_top: float | tuple[float, float] | list[float],
shift_left: float | list[float] | None = None,
/,
**kwargs: Any,
) -> ConstantFormatVideoNode
Apply a subpixel shift to the clip using the kernel's scaling logic.
If a single float or tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shifts_or_top
¶float | tuple[float, float] | list[float]
) –Either a single vertical shift, a (top, left) tuple, or a list of vertical shifts.
-
shift_left
¶float | list[float] | None
, default:None
) –Horizontal shift or list of horizontal shifts. Ignored if
shifts_or_top
is a tuple. -
kwargs
¶Any
, default:{}
) –Additional arguments passed to the internal
scale
call.
Returns:
-
ConstantFormatVideoNode
–A new clip with the applied shift.
Raises:
-
VariableFormatError
–If the input clip has variable format.
-
CustomValueError
–If the input clip is GRAY but lists of shift has been passed.
Source code
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|
supersample ¶
supersample(
clip: VideoNodeT,
rfactor: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Supersample a clip by a given scaling factor.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
rfactor
¶float
, default:2.0
) –Scaling factor for supersampling.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Raises:
-
CustomValueError
–If resulting resolution is non-positive.
Source code
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|
CustomBilinear ¶
CustomBilinear(**kwargs: Any)
Bases: CustomComplexKernel
, Bilinear
Bilinear resizer using the CustomKernel
class.
Initialize the scaler with optional keyword arguments.
These keyword arguments are automatically forwarded to the _implemented_funcs
methods but only if the method explicitly accepts them as named parameters. If the same keyword is passed to both __init__
and one of the _implemented_funcs
, the one passed to func
takes precedence.
Parameters:
Classes:
-
cached_property
–Read only version of functools.cached_property.
Methods:
-
bob
–Apply bob deinterlacing to a given clip using the selected resizer.
-
deinterlace
–Apply deinterlacing to a given clip using the selected resizer.
-
descale
–Descale a clip to the given resolution, with image borders handling and sampling grid alignment,
-
descale_function
– -
ensure_obj
–Ensure that the given kernel input is returned as a kernel instance.
-
from_param
–Resolve and return a kernel class from a string name, class type, or instance.
-
get_bob_args
–Generate the keyword arguments used for bobbing.
-
get_descale_args
–Generate and normalize argument dictionary for a descale operation.
-
get_params_args
–Generate a base set of parameters to pass for scaling, descaling, or resampling.
-
get_resample_args
–Generate and normalize argument dictionary for a resample operation.
-
get_rescale_args
–Generate and normalize argument dictionary for a rescale operation.
-
get_scale_args
–Generate and normalize argument dictionary for a scale operation.
-
kernel
– -
kernel_radius
–Return the effective kernel radius for the scaler.
-
multi
–Deprecated alias for
supersample
. -
pretty_string
–Cached property returning a user-friendly string representation.
-
resample
–Resample a video clip to the given format.
-
resample_function
– -
rescale
–Rescale a clip to the given resolution from a previously descaled clip,
-
rescale_function
– -
scale
–Scale a clip to the given resolution, with aspect ratio and linear light support.
-
scale_function
– -
shift
–Apply a subpixel shift to the clip using the kernel's scaling logic.
-
supersample
–Supersample a clip by a given scaling factor.
Attributes:
-
bob_function
(Callable[..., ConstantFormatVideoNode]
) –Bob function called internally when performing bobbing operations.
-
kwargs
(dict[str, Any]
) –Arguments passed to the implemented funcs or internal scale function.
Source code
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|
bob_function class-attribute
instance-attribute
¶
bob_function: Callable[..., ConstantFormatVideoNode] = Bob
Bob function called internally when performing bobbing operations.
kwargs instance-attribute
¶
Arguments passed to the implemented funcs or internal scale function.
cached_property ¶
cached_property(func: Callable[Concatenate[_BaseScalerT, P], T_co])
Bases: cached_property[T_co]
Read only version of functools.cached_property.
Source code
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|
bob ¶
bob(
clip: VideoNode, *, tff: FieldBasedT | bool | None = None, **kwargs: Any
) -> ConstantFormatVideoNode
Apply bob deinterlacing to a given clip using the selected resizer.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip
-
tff
¶FieldBasedT | bool | None
, default:None
) –Field order of the clip.
Returns:
-
ConstantFormatVideoNode
–The bobbed clip.
Source code
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|
deinterlace ¶
deinterlace(
clip: VideoNode,
*,
tff: FieldBasedT | bool | None = None,
double_rate: bool = True,
**kwargs: Any
) -> ConstantFormatVideoNode
Apply deinterlacing to a given clip using the selected resizer.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip
-
tff
¶FieldBasedT | bool | None
, default:None
) –Field order of the clip.
-
double_rate
¶bool
, default:True
) –Wether to double the frame rate (True) of retain the original rate (False).
Returns:
-
ConstantFormatVideoNode
–The bobbed clip.
Source code
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|
descale ¶
descale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Descale a clip to the given resolution, with image borders handling and sampling grid alignment, optionally using linear light processing.
Supports both progressive and interlaced sources. When interlaced, it will separate fields, perform per-field descaling, and weave them back.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target descaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target descaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during descaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
descale_function
.
Returns:
-
ConstantFormatVideoNode
–The descaled video node, optionally processed in linear light.
Source code
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|
descale_function ¶
descale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
ensure_obj classmethod
¶
ensure_obj(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> Self
Ensure that the given kernel input is returned as a kernel instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel name, class, or instance. Defaults to current class if None.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
Self
–The resolved and instantiated kernel.
Source code
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|
from_param classmethod
¶
from_param(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> type[Self]
Resolve and return a kernel class from a string name, class type, or instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel identifier as a string, class type, or instance. If None, defaults to the current class.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
type[Self]
–The resolved kernel class.
Raises:
-
UnknownKernelError
–If the kernel could not be identified.
Source code
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|
get_bob_args ¶
get_bob_args(
clip: VideoNode, shift: tuple[TopShift, LeftShift] = (0, 0), **kwargs: Any
) -> dict[str, Any]
Generate the keyword arguments used for bobbing.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left).
-
kwargs
¶Any
, default:{}
) –Extra parameters to merge.
Returns:
Source code
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|
get_descale_args ¶
get_descale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a descale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the descale function.
Returns:
Source code
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|
get_params_args ¶
get_params_args(
is_descale: bool,
clip: VideoNode,
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate a base set of parameters to pass for scaling, descaling, or resampling.
Parameters:
-
is_descale
¶bool
) –Whether this is for a descale operation.
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments to include.
Returns:
Source code
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|
get_resample_args ¶
get_resample_args(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None,
matrix_in: MatrixT | None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a resample operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
) –Target color matrix.
-
matrix_in
¶MatrixT | None
) –Source color matrix.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the resample function.
Returns:
Source code
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|
get_rescale_args ¶
get_rescale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a rescale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the rescale function.
Returns:
Source code
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|
get_scale_args ¶
get_scale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a scale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the scale function.
Returns:
Source code
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|
kernel ¶
Source code
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|
kernel_radius ¶
kernel_radius() -> int
Return the effective kernel radius for the scaler.
Returns:
-
int
–Kernel radius.
Raises:
-
CustomNotImplementedError
–If no kernel radius is defined.
Source code
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|
multi ¶
multi(
clip: VideoNodeT,
multi: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Deprecated alias for supersample
.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
multi
¶float
, default:2.0
) –Supersampling factor.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Source code
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|
pretty_string ¶
pretty_string() -> str
Cached property returning a user-friendly string representation.
Returns:
-
str
–Pretty-printed string with arguments.
Source code
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|
resample ¶
resample(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None = None,
matrix_in: MatrixT | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Resample a video clip to the given format.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
, default:None
) –An optional color transformation matrix to apply.
-
matrix_in
¶MatrixT | None
, default:None
) –An optional input matrix for color transformations.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments passed to the
resample_function
.
Returns:
-
ConstantFormatVideoNode
–The resampled clip.
Source code
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|
resample_function ¶
resample_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
rescale ¶
rescale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Rescale a clip to the given resolution from a previously descaled clip, with image borders handling and sampling grid alignment, optionally using linear light processing.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target scaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target scaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before rescaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during rescaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during rescaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
rescale_function
.
Returns:
-
ConstantFormatVideoNode
–The scaled clip.
Source code
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|
rescale_function ¶
rescale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
scale ¶
scale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]] = (
0,
0,
),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: BorderHandling = MIRROR,
sample_grid_model: SampleGridModel = MATCH_EDGES,
sar: Sar | float | bool | None = None,
dar: Dar | float | bool | None = None,
dar_in: Dar | bool | float | None = None,
keep_ar: bool | None = None,
blur: float | None = None,
**kwargs: Any
) -> VideoNode | ConstantFormatVideoNode
Scale a clip to the given resolution, with aspect ratio and linear light support.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target height (defaults to clip height if None).
-
shift
¶tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling. If a tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
sar
¶Sar | float | bool | None
, default:None
) –Sample aspect ratio to assume or convert to.
-
dar
¶Dar | float | bool | None
, default:None
) –Desired display aspect ratio.
-
dar_in
¶Dar | bool | float | None
, default:None
) –Input display aspect ratio, if different from clip's.
-
keep_ar
¶bool | None
, default:None
) –Whether to adjust dimensions to preserve aspect ratio.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
Returns:
-
VideoNode | ConstantFormatVideoNode
–Scaled clip, optionally aspect-corrected and linearized.
Source code
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|
scale_function ¶
scale_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> VideoNode
Source code
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|
shift ¶
shift(
clip: VideoNode,
shifts_or_top: float | tuple[float, float] | list[float],
shift_left: float | list[float] | None = None,
/,
**kwargs: Any,
) -> ConstantFormatVideoNode
Apply a subpixel shift to the clip using the kernel's scaling logic.
If a single float or tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shifts_or_top
¶float | tuple[float, float] | list[float]
) –Either a single vertical shift, a (top, left) tuple, or a list of vertical shifts.
-
shift_left
¶float | list[float] | None
, default:None
) –Horizontal shift or list of horizontal shifts. Ignored if
shifts_or_top
is a tuple. -
kwargs
¶Any
, default:{}
) –Additional arguments passed to the internal
scale
call.
Returns:
-
ConstantFormatVideoNode
–A new clip with the applied shift.
Raises:
-
VariableFormatError
–If the input clip has variable format.
-
CustomValueError
–If the input clip is GRAY but lists of shift has been passed.
Source code
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|
supersample ¶
supersample(
clip: VideoNodeT,
rfactor: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Supersample a clip by a given scaling factor.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
rfactor
¶float
, default:2.0
) –Scaling factor for supersampling.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Raises:
-
CustomValueError
–If resulting resolution is non-positive.
Source code
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|
CustomLanczos ¶
Bases: CustomComplexTapsKernel
, Lanczos
Lanczos resizer using the CustomKernel
class.
Classes:
-
cached_property
–Read only version of functools.cached_property.
Methods:
-
bob
–Apply bob deinterlacing to a given clip using the selected resizer.
-
deinterlace
–Apply deinterlacing to a given clip using the selected resizer.
-
descale
–Descale a clip to the given resolution, with image borders handling and sampling grid alignment,
-
descale_function
– -
ensure_obj
–Ensure that the given kernel input is returned as a kernel instance.
-
from_param
–Resolve and return a kernel class from a string name, class type, or instance.
-
get_bob_args
– -
get_descale_args
–Generate and normalize argument dictionary for a descale operation.
-
get_params_args
– -
get_resample_args
–Generate and normalize argument dictionary for a resample operation.
-
get_rescale_args
–Generate and normalize argument dictionary for a rescale operation.
-
get_scale_args
–Generate and normalize argument dictionary for a scale operation.
-
kernel
– -
kernel_radius
–Compute the effective kernel radius based on the number of taps.
-
multi
–Deprecated alias for
supersample
. -
pretty_string
–Cached property returning a user-friendly string representation.
-
resample
–Resample a video clip to the given format.
-
resample_function
– -
rescale
–Rescale a clip to the given resolution from a previously descaled clip,
-
rescale_function
– -
scale
–Scale a clip to the given resolution, with aspect ratio and linear light support.
-
scale_function
– -
shift
–Apply a subpixel shift to the clip using the kernel's scaling logic.
-
supersample
–Supersample a clip by a given scaling factor.
Attributes:
-
bob_function
(Callable[..., ConstantFormatVideoNode]
) –Bob function called internally when performing bobbing operations.
-
kwargs
(dict[str, Any]
) –Arguments passed to the implemented funcs or internal scale function.
-
taps
–
Source code
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|
bob_function class-attribute
instance-attribute
¶
bob_function: Callable[..., ConstantFormatVideoNode] = Bob
Bob function called internally when performing bobbing operations.
kwargs instance-attribute
¶
Arguments passed to the implemented funcs or internal scale function.
cached_property ¶
cached_property(func: Callable[Concatenate[_BaseScalerT, P], T_co])
Bases: cached_property[T_co]
Read only version of functools.cached_property.
Source code
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|
bob ¶
bob(
clip: VideoNode, *, tff: FieldBasedT | bool | None = None, **kwargs: Any
) -> ConstantFormatVideoNode
Apply bob deinterlacing to a given clip using the selected resizer.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip
-
tff
¶FieldBasedT | bool | None
, default:None
) –Field order of the clip.
Returns:
-
ConstantFormatVideoNode
–The bobbed clip.
Source code
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|
deinterlace ¶
deinterlace(
clip: VideoNode,
*,
tff: FieldBasedT | bool | None = None,
double_rate: bool = True,
**kwargs: Any
) -> ConstantFormatVideoNode
Apply deinterlacing to a given clip using the selected resizer.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip
-
tff
¶FieldBasedT | bool | None
, default:None
) –Field order of the clip.
-
double_rate
¶bool
, default:True
) –Wether to double the frame rate (True) of retain the original rate (False).
Returns:
-
ConstantFormatVideoNode
–The bobbed clip.
Source code
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|
descale ¶
descale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Descale a clip to the given resolution, with image borders handling and sampling grid alignment, optionally using linear light processing.
Supports both progressive and interlaced sources. When interlaced, it will separate fields, perform per-field descaling, and weave them back.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target descaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target descaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during descaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
descale_function
.
Returns:
-
ConstantFormatVideoNode
–The descaled video node, optionally processed in linear light.
Source code
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|
descale_function ¶
descale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
ensure_obj classmethod
¶
ensure_obj(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> Self
Ensure that the given kernel input is returned as a kernel instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel name, class, or instance. Defaults to current class if None.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
Self
–The resolved and instantiated kernel.
Source code
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|
from_param classmethod
¶
from_param(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> type[Self]
Resolve and return a kernel class from a string name, class type, or instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel identifier as a string, class type, or instance. If None, defaults to the current class.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
type[Self]
–The resolved kernel class.
Raises:
-
UnknownKernelError
–If the kernel could not be identified.
Source code
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|
get_bob_args ¶
get_bob_args(
clip: VideoNode, shift: tuple[TopShift, LeftShift] = (0, 0), **kwargs: Any
) -> dict[str, Any]
Source code
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|
get_descale_args ¶
get_descale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a descale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the descale function.
Returns:
Source code
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|
get_params_args ¶
get_params_args(
is_descale: bool,
clip: VideoNode,
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Source code
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|
get_resample_args ¶
get_resample_args(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None,
matrix_in: MatrixT | None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a resample operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
) –Target color matrix.
-
matrix_in
¶MatrixT | None
) –Source color matrix.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the resample function.
Returns:
Source code
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|
get_rescale_args ¶
get_rescale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a rescale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the rescale function.
Returns:
Source code
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|
get_scale_args ¶
get_scale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a scale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the scale function.
Returns:
Source code
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|
kernel ¶
Source code
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|
kernel_radius ¶
kernel_radius() -> int
Compute the effective kernel radius based on the number of taps.
Returns:
-
int
–Radius as the ceiling of
taps
.
Source code
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|
multi ¶
multi(
clip: VideoNodeT,
multi: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Deprecated alias for supersample
.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
multi
¶float
, default:2.0
) –Supersampling factor.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Source code
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|
pretty_string ¶
pretty_string() -> str
Cached property returning a user-friendly string representation.
Returns:
-
str
–Pretty-printed string with arguments.
Source code
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|
resample ¶
resample(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None = None,
matrix_in: MatrixT | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Resample a video clip to the given format.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
, default:None
) –An optional color transformation matrix to apply.
-
matrix_in
¶MatrixT | None
, default:None
) –An optional input matrix for color transformations.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments passed to the
resample_function
.
Returns:
-
ConstantFormatVideoNode
–The resampled clip.
Source code
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|
resample_function ¶
resample_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
rescale ¶
rescale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Rescale a clip to the given resolution from a previously descaled clip, with image borders handling and sampling grid alignment, optionally using linear light processing.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target scaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target scaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before rescaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during rescaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during rescaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
rescale_function
.
Returns:
-
ConstantFormatVideoNode
–The scaled clip.
Source code
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|
rescale_function ¶
rescale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
scale ¶
scale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]] = (
0,
0,
),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: BorderHandling = MIRROR,
sample_grid_model: SampleGridModel = MATCH_EDGES,
sar: Sar | float | bool | None = None,
dar: Dar | float | bool | None = None,
dar_in: Dar | bool | float | None = None,
keep_ar: bool | None = None,
blur: float | None = None,
**kwargs: Any
) -> VideoNode | ConstantFormatVideoNode
Scale a clip to the given resolution, with aspect ratio and linear light support.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target height (defaults to clip height if None).
-
shift
¶tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling. If a tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
sar
¶Sar | float | bool | None
, default:None
) –Sample aspect ratio to assume or convert to.
-
dar
¶Dar | float | bool | None
, default:None
) –Desired display aspect ratio.
-
dar_in
¶Dar | bool | float | None
, default:None
) –Input display aspect ratio, if different from clip's.
-
keep_ar
¶bool | None
, default:None
) –Whether to adjust dimensions to preserve aspect ratio.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
Returns:
-
VideoNode | ConstantFormatVideoNode
–Scaled clip, optionally aspect-corrected and linearized.
Source code
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|
scale_function ¶
scale_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> VideoNode
Source code
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|
shift ¶
shift(
clip: VideoNode,
shifts_or_top: float | tuple[float, float] | list[float],
shift_left: float | list[float] | None = None,
/,
**kwargs: Any,
) -> ConstantFormatVideoNode
Apply a subpixel shift to the clip using the kernel's scaling logic.
If a single float or tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shifts_or_top
¶float | tuple[float, float] | list[float]
) –Either a single vertical shift, a (top, left) tuple, or a list of vertical shifts.
-
shift_left
¶float | list[float] | None
, default:None
) –Horizontal shift or list of horizontal shifts. Ignored if
shifts_or_top
is a tuple. -
kwargs
¶Any
, default:{}
) –Additional arguments passed to the internal
scale
call.
Returns:
-
ConstantFormatVideoNode
–A new clip with the applied shift.
Raises:
-
VariableFormatError
–If the input clip has variable format.
-
CustomValueError
–If the input clip is GRAY but lists of shift has been passed.
Source code
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|
supersample ¶
supersample(
clip: VideoNodeT,
rfactor: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Supersample a clip by a given scaling factor.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
rfactor
¶float
, default:2.0
) –Scaling factor for supersampling.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Raises:
-
CustomValueError
–If resulting resolution is non-positive.
Source code
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|
CustomPoint ¶
CustomPoint(**kwargs: Any)
Bases: CustomComplexKernel
, Point
Point resizer using the CustomKernel
class.
Initialize the scaler with optional keyword arguments.
These keyword arguments are automatically forwarded to the _implemented_funcs
methods but only if the method explicitly accepts them as named parameters. If the same keyword is passed to both __init__
and one of the _implemented_funcs
, the one passed to func
takes precedence.
Parameters:
Classes:
-
cached_property
–Read only version of functools.cached_property.
Methods:
-
bob
–Apply bob deinterlacing to a given clip using the selected resizer.
-
deinterlace
–Apply deinterlacing to a given clip using the selected resizer.
-
descale
–Descale a clip to the given resolution, with image borders handling and sampling grid alignment,
-
descale_function
– -
ensure_obj
–Ensure that the given kernel input is returned as a kernel instance.
-
from_param
–Resolve and return a kernel class from a string name, class type, or instance.
-
get_bob_args
–Generate the keyword arguments used for bobbing.
-
get_descale_args
–Generate and normalize argument dictionary for a descale operation.
-
get_params_args
–Generate a base set of parameters to pass for scaling, descaling, or resampling.
-
get_resample_args
–Generate and normalize argument dictionary for a resample operation.
-
get_rescale_args
–Generate and normalize argument dictionary for a rescale operation.
-
get_scale_args
–Generate and normalize argument dictionary for a scale operation.
-
kernel
– -
kernel_radius
–Return the effective kernel radius for the scaler.
-
multi
–Deprecated alias for
supersample
. -
pretty_string
–Cached property returning a user-friendly string representation.
-
resample
–Resample a video clip to the given format.
-
resample_function
– -
rescale
–Rescale a clip to the given resolution from a previously descaled clip,
-
rescale_function
– -
scale
–Scale a clip to the given resolution, with aspect ratio and linear light support.
-
scale_function
– -
shift
–Apply a subpixel shift to the clip using the kernel's scaling logic.
-
supersample
–Supersample a clip by a given scaling factor.
Attributes:
-
bob_function
(Callable[..., ConstantFormatVideoNode]
) –Bob function called internally when performing bobbing operations.
-
kwargs
(dict[str, Any]
) –Arguments passed to the implemented funcs or internal scale function.
Source code
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|
bob_function class-attribute
instance-attribute
¶
bob_function: Callable[..., ConstantFormatVideoNode] = Bob
Bob function called internally when performing bobbing operations.
kwargs instance-attribute
¶
Arguments passed to the implemented funcs or internal scale function.
cached_property ¶
cached_property(func: Callable[Concatenate[_BaseScalerT, P], T_co])
Bases: cached_property[T_co]
Read only version of functools.cached_property.
Source code
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|
bob ¶
bob(
clip: VideoNode, *, tff: FieldBasedT | bool | None = None, **kwargs: Any
) -> ConstantFormatVideoNode
Apply bob deinterlacing to a given clip using the selected resizer.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip
-
tff
¶FieldBasedT | bool | None
, default:None
) –Field order of the clip.
Returns:
-
ConstantFormatVideoNode
–The bobbed clip.
Source code
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|
deinterlace ¶
deinterlace(
clip: VideoNode,
*,
tff: FieldBasedT | bool | None = None,
double_rate: bool = True,
**kwargs: Any
) -> ConstantFormatVideoNode
Apply deinterlacing to a given clip using the selected resizer.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip
-
tff
¶FieldBasedT | bool | None
, default:None
) –Field order of the clip.
-
double_rate
¶bool
, default:True
) –Wether to double the frame rate (True) of retain the original rate (False).
Returns:
-
ConstantFormatVideoNode
–The bobbed clip.
Source code
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|
descale ¶
descale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Descale a clip to the given resolution, with image borders handling and sampling grid alignment, optionally using linear light processing.
Supports both progressive and interlaced sources. When interlaced, it will separate fields, perform per-field descaling, and weave them back.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target descaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target descaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during descaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
descale_function
.
Returns:
-
ConstantFormatVideoNode
–The descaled video node, optionally processed in linear light.
Source code
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|
descale_function ¶
descale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
ensure_obj classmethod
¶
ensure_obj(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> Self
Ensure that the given kernel input is returned as a kernel instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel name, class, or instance. Defaults to current class if None.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
Self
–The resolved and instantiated kernel.
Source code
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|
from_param classmethod
¶
from_param(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> type[Self]
Resolve and return a kernel class from a string name, class type, or instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel identifier as a string, class type, or instance. If None, defaults to the current class.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
type[Self]
–The resolved kernel class.
Raises:
-
UnknownKernelError
–If the kernel could not be identified.
Source code
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|
get_bob_args ¶
get_bob_args(
clip: VideoNode, shift: tuple[TopShift, LeftShift] = (0, 0), **kwargs: Any
) -> dict[str, Any]
Generate the keyword arguments used for bobbing.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left).
-
kwargs
¶Any
, default:{}
) –Extra parameters to merge.
Returns:
Source code
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|
get_descale_args ¶
get_descale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a descale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the descale function.
Returns:
Source code
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|
get_params_args ¶
get_params_args(
is_descale: bool,
clip: VideoNode,
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate a base set of parameters to pass for scaling, descaling, or resampling.
Parameters:
-
is_descale
¶bool
) –Whether this is for a descale operation.
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments to include.
Returns:
Source code
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|
get_resample_args ¶
get_resample_args(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None,
matrix_in: MatrixT | None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a resample operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
) –Target color matrix.
-
matrix_in
¶MatrixT | None
) –Source color matrix.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the resample function.
Returns:
Source code
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|
get_rescale_args ¶
get_rescale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a rescale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the rescale function.
Returns:
Source code
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|
get_scale_args ¶
get_scale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a scale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the scale function.
Returns:
Source code
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|
kernel ¶
Source code
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|
kernel_radius ¶
kernel_radius() -> int
Return the effective kernel radius for the scaler.
Returns:
-
int
–Kernel radius.
Raises:
-
CustomNotImplementedError
–If no kernel radius is defined.
Source code
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|
multi ¶
multi(
clip: VideoNodeT,
multi: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Deprecated alias for supersample
.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
multi
¶float
, default:2.0
) –Supersampling factor.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Source code
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|
pretty_string ¶
pretty_string() -> str
Cached property returning a user-friendly string representation.
Returns:
-
str
–Pretty-printed string with arguments.
Source code
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|
resample ¶
resample(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None = None,
matrix_in: MatrixT | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Resample a video clip to the given format.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
, default:None
) –An optional color transformation matrix to apply.
-
matrix_in
¶MatrixT | None
, default:None
) –An optional input matrix for color transformations.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments passed to the
resample_function
.
Returns:
-
ConstantFormatVideoNode
–The resampled clip.
Source code
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|
resample_function ¶
resample_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
rescale ¶
rescale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Rescale a clip to the given resolution from a previously descaled clip, with image borders handling and sampling grid alignment, optionally using linear light processing.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target scaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target scaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before rescaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during rescaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during rescaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
rescale_function
.
Returns:
-
ConstantFormatVideoNode
–The scaled clip.
Source code
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|
rescale_function ¶
rescale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
scale ¶
scale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]] = (
0,
0,
),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: BorderHandling = MIRROR,
sample_grid_model: SampleGridModel = MATCH_EDGES,
sar: Sar | float | bool | None = None,
dar: Dar | float | bool | None = None,
dar_in: Dar | bool | float | None = None,
keep_ar: bool | None = None,
blur: float | None = None,
**kwargs: Any
) -> VideoNode | ConstantFormatVideoNode
Scale a clip to the given resolution, with aspect ratio and linear light support.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target height (defaults to clip height if None).
-
shift
¶tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling. If a tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
sar
¶Sar | float | bool | None
, default:None
) –Sample aspect ratio to assume or convert to.
-
dar
¶Dar | float | bool | None
, default:None
) –Desired display aspect ratio.
-
dar_in
¶Dar | bool | float | None
, default:None
) –Input display aspect ratio, if different from clip's.
-
keep_ar
¶bool | None
, default:None
) –Whether to adjust dimensions to preserve aspect ratio.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
Returns:
-
VideoNode | ConstantFormatVideoNode
–Scaled clip, optionally aspect-corrected and linearized.
Source code
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|
scale_function ¶
scale_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> VideoNode
Source code
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|
shift ¶
shift(
clip: VideoNode,
shifts_or_top: float | tuple[float, float] | list[float],
shift_left: float | list[float] | None = None,
/,
**kwargs: Any,
) -> ConstantFormatVideoNode
Apply a subpixel shift to the clip using the kernel's scaling logic.
If a single float or tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shifts_or_top
¶float | tuple[float, float] | list[float]
) –Either a single vertical shift, a (top, left) tuple, or a list of vertical shifts.
-
shift_left
¶float | list[float] | None
, default:None
) –Horizontal shift or list of horizontal shifts. Ignored if
shifts_or_top
is a tuple. -
kwargs
¶Any
, default:{}
) –Additional arguments passed to the internal
scale
call.
Returns:
-
ConstantFormatVideoNode
–A new clip with the applied shift.
Raises:
-
VariableFormatError
–If the input clip has variable format.
-
CustomValueError
–If the input clip is GRAY but lists of shift has been passed.
Source code
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|
supersample ¶
supersample(
clip: VideoNodeT,
rfactor: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Supersample a clip by a given scaling factor.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
rfactor
¶float
, default:2.0
) –Scaling factor for supersampling.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Raises:
-
CustomValueError
–If resulting resolution is non-positive.
Source code
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|
Gaussian ¶
Bases: CustomComplexTapsKernel
Gaussian resizer.
Initialize the kernel with a specific sigma and number of taps.
Parameters:
-
sigma
¶float
, default:0.5
) –The standard deviation (sigma) of the Gaussian function. It is the same as imagemagick's sigma scaling.
-
taps
¶float
, default:2
) –Determines the radius of the kernel.
Classes:
-
Sigma
–A class for Gaussian sigma scaling transformations.
-
cached_property
–Read only version of functools.cached_property.
Methods:
-
descale
–Descale a clip to the given resolution, with image borders handling and sampling grid alignment,
-
descale_function
– -
ensure_obj
–Ensure that the given kernel input is returned as a kernel instance.
-
from_param
–Resolve and return a kernel class from a string name, class type, or instance.
-
get_descale_args
–Generate and normalize argument dictionary for a descale operation.
-
get_params_args
–Generate a base set of parameters to pass for scaling, descaling, or resampling.
-
get_resample_args
–Generate and normalize argument dictionary for a resample operation.
-
get_rescale_args
–Generate and normalize argument dictionary for a rescale operation.
-
get_scale_args
–Generate and normalize argument dictionary for a scale operation.
-
kernel
– -
kernel_radius
–Compute the effective kernel radius based on the number of taps.
-
multi
–Deprecated alias for
supersample
. -
pretty_string
–Cached property returning a user-friendly string representation.
-
resample
–Resample a video clip to the given format.
-
resample_function
– -
rescale
–Rescale a clip to the given resolution from a previously descaled clip,
-
rescale_function
– -
scale
–Scale a clip to the given resolution, with aspect ratio and linear light support.
-
scale_function
– -
shift
–Apply a subpixel shift to the clip using the kernel's scaling logic.
-
supersample
–Supersample a clip by a given scaling factor.
Attributes:
-
kwargs
(dict[str, Any]
) –Arguments passed to the implemented funcs or internal scale function.
-
sigma
(Sigma
) – -
taps
–
Source code
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|
kwargs instance-attribute
¶
Arguments passed to the implemented funcs or internal scale function.
Sigma ¶
Bases: float
A class for Gaussian sigma scaling transformations.
Methods:
-
from_fmtc
–Converts a curve value from fmtc to the Gaussian sigma.
-
from_libplacebo
–Converts a sigma value from libplacebo to the Gaussian sigma.
-
to_fmtc
–Converts a Gaussian sigma to fmtc's curve value.
-
to_libplacebo
–Converts a Gaussian sigma to libplacebo's sigma value.
from_fmtc ¶
Converts a curve value from fmtc to the Gaussian sigma.
Source code
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|
from_libplacebo ¶
Converts a sigma value from libplacebo to the Gaussian sigma.
Source code
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|
to_fmtc ¶
Converts a Gaussian sigma to fmtc's curve value.
Source code
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|
cached_property ¶
cached_property(func: Callable[Concatenate[_BaseScalerT, P], T_co])
Bases: cached_property[T_co]
Read only version of functools.cached_property.
Source code
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|
descale ¶
descale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Descale a clip to the given resolution, with image borders handling and sampling grid alignment, optionally using linear light processing.
Supports both progressive and interlaced sources. When interlaced, it will separate fields, perform per-field descaling, and weave them back.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target descaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target descaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during descaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
descale_function
.
Returns:
-
ConstantFormatVideoNode
–The descaled video node, optionally processed in linear light.
Source code
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|
descale_function ¶
descale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
ensure_obj classmethod
¶
ensure_obj(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> Self
Ensure that the given kernel input is returned as a kernel instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel name, class, or instance. Defaults to current class if None.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
Self
–The resolved and instantiated kernel.
Source code
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|
from_param classmethod
¶
from_param(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> type[Self]
Resolve and return a kernel class from a string name, class type, or instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel identifier as a string, class type, or instance. If None, defaults to the current class.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
type[Self]
–The resolved kernel class.
Raises:
-
UnknownKernelError
–If the kernel could not be identified.
Source code
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|
get_descale_args ¶
get_descale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a descale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the descale function.
Returns:
Source code
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|
get_params_args ¶
get_params_args(
is_descale: bool,
clip: VideoNode,
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate a base set of parameters to pass for scaling, descaling, or resampling.
Parameters:
-
is_descale
¶bool
) –Whether this is for a descale operation.
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments to include.
Returns:
Source code
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|
get_resample_args ¶
get_resample_args(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None,
matrix_in: MatrixT | None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a resample operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
) –Target color matrix.
-
matrix_in
¶MatrixT | None
) –Source color matrix.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the resample function.
Returns:
Source code
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|
get_rescale_args ¶
get_rescale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a rescale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the rescale function.
Returns:
Source code
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|
get_scale_args ¶
get_scale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a scale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the scale function.
Returns:
Source code
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|
kernel ¶
Source code
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|
kernel_radius ¶
kernel_radius() -> int
Compute the effective kernel radius based on the number of taps.
Returns:
-
int
–Radius as the ceiling of
taps
.
Source code
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|
multi ¶
multi(
clip: VideoNodeT,
multi: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Deprecated alias for supersample
.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
multi
¶float
, default:2.0
) –Supersampling factor.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Source code
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|
pretty_string ¶
pretty_string() -> str
Cached property returning a user-friendly string representation.
Returns:
-
str
–Pretty-printed string with arguments.
Source code
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|
resample ¶
resample(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None = None,
matrix_in: MatrixT | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Resample a video clip to the given format.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
, default:None
) –An optional color transformation matrix to apply.
-
matrix_in
¶MatrixT | None
, default:None
) –An optional input matrix for color transformations.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments passed to the
resample_function
.
Returns:
-
ConstantFormatVideoNode
–The resampled clip.
Source code
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|
resample_function ¶
resample_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
rescale ¶
rescale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Rescale a clip to the given resolution from a previously descaled clip, with image borders handling and sampling grid alignment, optionally using linear light processing.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target scaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target scaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before rescaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during rescaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during rescaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
rescale_function
.
Returns:
-
ConstantFormatVideoNode
–The scaled clip.
Source code
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|
rescale_function ¶
rescale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
scale ¶
scale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]] = (
0,
0,
),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: BorderHandling = MIRROR,
sample_grid_model: SampleGridModel = MATCH_EDGES,
sar: Sar | float | bool | None = None,
dar: Dar | float | bool | None = None,
dar_in: Dar | bool | float | None = None,
keep_ar: bool | None = None,
blur: float | None = None,
**kwargs: Any
) -> VideoNode | ConstantFormatVideoNode
Scale a clip to the given resolution, with aspect ratio and linear light support.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target height (defaults to clip height if None).
-
shift
¶tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling. If a tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
sar
¶Sar | float | bool | None
, default:None
) –Sample aspect ratio to assume or convert to.
-
dar
¶Dar | float | bool | None
, default:None
) –Desired display aspect ratio.
-
dar_in
¶Dar | bool | float | None
, default:None
) –Input display aspect ratio, if different from clip's.
-
keep_ar
¶bool | None
, default:None
) –Whether to adjust dimensions to preserve aspect ratio.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
Returns:
-
VideoNode | ConstantFormatVideoNode
–Scaled clip, optionally aspect-corrected and linearized.
Source code
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|
scale_function ¶
scale_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> VideoNode
Source code
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|
shift ¶
shift(
clip: VideoNode,
shifts_or_top: float | tuple[float, float] | list[float],
shift_left: float | list[float] | None = None,
/,
**kwargs: Any,
) -> ConstantFormatVideoNode
Apply a subpixel shift to the clip using the kernel's scaling logic.
If a single float or tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shifts_or_top
¶float | tuple[float, float] | list[float]
) –Either a single vertical shift, a (top, left) tuple, or a list of vertical shifts.
-
shift_left
¶float | list[float] | None
, default:None
) –Horizontal shift or list of horizontal shifts. Ignored if
shifts_or_top
is a tuple. -
kwargs
¶Any
, default:{}
) –Additional arguments passed to the internal
scale
call.
Returns:
-
ConstantFormatVideoNode
–A new clip with the applied shift.
Raises:
-
VariableFormatError
–If the input clip has variable format.
-
CustomValueError
–If the input clip is GRAY but lists of shift has been passed.
Source code
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|
supersample ¶
supersample(
clip: VideoNodeT,
rfactor: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Supersample a clip by a given scaling factor.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
rfactor
¶float
, default:2.0
) –Scaling factor for supersampling.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Raises:
-
CustomValueError
–If resulting resolution is non-positive.
Source code
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|
Hamming ¶
Bases: CustomComplexTapsKernel
Hamming kernel.
Initialize the kernel with a specific number of taps and optional keyword arguments.
These keyword arguments are automatically forwarded to the _implemented_funcs
methods but only if the method explicitly accepts them as named parameters. If the same keyword is passed to both __init__
and one of the _implemented_funcs
, the one passed to func
takes precedence.
Parameters:
-
taps
¶float
) –Determines the radius of the kernel.
-
kwargs
¶Any
, default:{}
) –Keyword arguments that configure the internal scaling behavior.
Classes:
-
cached_property
–Read only version of functools.cached_property.
Methods:
-
descale
–Descale a clip to the given resolution, with image borders handling and sampling grid alignment,
-
descale_function
– -
ensure_obj
–Ensure that the given kernel input is returned as a kernel instance.
-
from_param
–Resolve and return a kernel class from a string name, class type, or instance.
-
get_descale_args
–Generate and normalize argument dictionary for a descale operation.
-
get_params_args
–Generate a base set of parameters to pass for scaling, descaling, or resampling.
-
get_resample_args
–Generate and normalize argument dictionary for a resample operation.
-
get_rescale_args
–Generate and normalize argument dictionary for a rescale operation.
-
get_scale_args
–Generate and normalize argument dictionary for a scale operation.
-
kernel
– -
kernel_radius
–Compute the effective kernel radius based on the number of taps.
-
multi
–Deprecated alias for
supersample
. -
pretty_string
–Cached property returning a user-friendly string representation.
-
resample
–Resample a video clip to the given format.
-
resample_function
– -
rescale
–Rescale a clip to the given resolution from a previously descaled clip,
-
rescale_function
– -
scale
–Scale a clip to the given resolution, with aspect ratio and linear light support.
-
scale_function
– -
shift
–Apply a subpixel shift to the clip using the kernel's scaling logic.
-
supersample
–Supersample a clip by a given scaling factor.
Attributes:
-
kwargs
(dict[str, Any]
) –Arguments passed to the implemented funcs or internal scale function.
-
taps
–
Source code
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|
kwargs instance-attribute
¶
Arguments passed to the implemented funcs or internal scale function.
cached_property ¶
cached_property(func: Callable[Concatenate[_BaseScalerT, P], T_co])
Bases: cached_property[T_co]
Read only version of functools.cached_property.
Source code
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|
descale ¶
descale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Descale a clip to the given resolution, with image borders handling and sampling grid alignment, optionally using linear light processing.
Supports both progressive and interlaced sources. When interlaced, it will separate fields, perform per-field descaling, and weave them back.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target descaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target descaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during descaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
descale_function
.
Returns:
-
ConstantFormatVideoNode
–The descaled video node, optionally processed in linear light.
Source code
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|
descale_function ¶
descale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
ensure_obj classmethod
¶
ensure_obj(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> Self
Ensure that the given kernel input is returned as a kernel instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel name, class, or instance. Defaults to current class if None.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
Self
–The resolved and instantiated kernel.
Source code
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|
from_param classmethod
¶
from_param(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> type[Self]
Resolve and return a kernel class from a string name, class type, or instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel identifier as a string, class type, or instance. If None, defaults to the current class.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
type[Self]
–The resolved kernel class.
Raises:
-
UnknownKernelError
–If the kernel could not be identified.
Source code
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|
get_descale_args ¶
get_descale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a descale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the descale function.
Returns:
Source code
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|
get_params_args ¶
get_params_args(
is_descale: bool,
clip: VideoNode,
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate a base set of parameters to pass for scaling, descaling, or resampling.
Parameters:
-
is_descale
¶bool
) –Whether this is for a descale operation.
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments to include.
Returns:
Source code
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|
get_resample_args ¶
get_resample_args(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None,
matrix_in: MatrixT | None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a resample operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
) –Target color matrix.
-
matrix_in
¶MatrixT | None
) –Source color matrix.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the resample function.
Returns:
Source code
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|
get_rescale_args ¶
get_rescale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a rescale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the rescale function.
Returns:
Source code
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|
get_scale_args ¶
get_scale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a scale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the scale function.
Returns:
Source code
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|
kernel ¶
Source code
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|
kernel_radius ¶
kernel_radius() -> int
Compute the effective kernel radius based on the number of taps.
Returns:
-
int
–Radius as the ceiling of
taps
.
Source code
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|
multi ¶
multi(
clip: VideoNodeT,
multi: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Deprecated alias for supersample
.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
multi
¶float
, default:2.0
) –Supersampling factor.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Source code
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|
pretty_string ¶
pretty_string() -> str
Cached property returning a user-friendly string representation.
Returns:
-
str
–Pretty-printed string with arguments.
Source code
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|
resample ¶
resample(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None = None,
matrix_in: MatrixT | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Resample a video clip to the given format.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
, default:None
) –An optional color transformation matrix to apply.
-
matrix_in
¶MatrixT | None
, default:None
) –An optional input matrix for color transformations.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments passed to the
resample_function
.
Returns:
-
ConstantFormatVideoNode
–The resampled clip.
Source code
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|
resample_function ¶
resample_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
rescale ¶
rescale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Rescale a clip to the given resolution from a previously descaled clip, with image borders handling and sampling grid alignment, optionally using linear light processing.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target scaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target scaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before rescaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during rescaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during rescaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
rescale_function
.
Returns:
-
ConstantFormatVideoNode
–The scaled clip.
Source code
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|
rescale_function ¶
rescale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
scale ¶
scale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]] = (
0,
0,
),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: BorderHandling = MIRROR,
sample_grid_model: SampleGridModel = MATCH_EDGES,
sar: Sar | float | bool | None = None,
dar: Dar | float | bool | None = None,
dar_in: Dar | bool | float | None = None,
keep_ar: bool | None = None,
blur: float | None = None,
**kwargs: Any
) -> VideoNode | ConstantFormatVideoNode
Scale a clip to the given resolution, with aspect ratio and linear light support.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target height (defaults to clip height if None).
-
shift
¶tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling. If a tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
sar
¶Sar | float | bool | None
, default:None
) –Sample aspect ratio to assume or convert to.
-
dar
¶Dar | float | bool | None
, default:None
) –Desired display aspect ratio.
-
dar_in
¶Dar | bool | float | None
, default:None
) –Input display aspect ratio, if different from clip's.
-
keep_ar
¶bool | None
, default:None
) –Whether to adjust dimensions to preserve aspect ratio.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
Returns:
-
VideoNode | ConstantFormatVideoNode
–Scaled clip, optionally aspect-corrected and linearized.
Source code
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|
scale_function ¶
scale_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> VideoNode
Source code
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|
shift ¶
shift(
clip: VideoNode,
shifts_or_top: float | tuple[float, float] | list[float],
shift_left: float | list[float] | None = None,
/,
**kwargs: Any,
) -> ConstantFormatVideoNode
Apply a subpixel shift to the clip using the kernel's scaling logic.
If a single float or tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shifts_or_top
¶float | tuple[float, float] | list[float]
) –Either a single vertical shift, a (top, left) tuple, or a list of vertical shifts.
-
shift_left
¶float | list[float] | None
, default:None
) –Horizontal shift or list of horizontal shifts. Ignored if
shifts_or_top
is a tuple. -
kwargs
¶Any
, default:{}
) –Additional arguments passed to the internal
scale
call.
Returns:
-
ConstantFormatVideoNode
–A new clip with the applied shift.
Raises:
-
VariableFormatError
–If the input clip has variable format.
-
CustomValueError
–If the input clip is GRAY but lists of shift has been passed.
Source code
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|
supersample ¶
supersample(
clip: VideoNodeT,
rfactor: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Supersample a clip by a given scaling factor.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
rfactor
¶float
, default:2.0
) –Scaling factor for supersampling.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Raises:
-
CustomValueError
–If resulting resolution is non-positive.
Source code
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|
Hann ¶
Bases: CustomComplexTapsKernel
Hann kernel.
Initialize the kernel with a specific number of taps and optional keyword arguments.
These keyword arguments are automatically forwarded to the _implemented_funcs
methods but only if the method explicitly accepts them as named parameters. If the same keyword is passed to both __init__
and one of the _implemented_funcs
, the one passed to func
takes precedence.
Parameters:
-
taps
¶float
) –Determines the radius of the kernel.
-
kwargs
¶Any
, default:{}
) –Keyword arguments that configure the internal scaling behavior.
Classes:
-
cached_property
–Read only version of functools.cached_property.
Methods:
-
descale
–Descale a clip to the given resolution, with image borders handling and sampling grid alignment,
-
descale_function
– -
ensure_obj
–Ensure that the given kernel input is returned as a kernel instance.
-
from_param
–Resolve and return a kernel class from a string name, class type, or instance.
-
get_descale_args
–Generate and normalize argument dictionary for a descale operation.
-
get_params_args
–Generate a base set of parameters to pass for scaling, descaling, or resampling.
-
get_resample_args
–Generate and normalize argument dictionary for a resample operation.
-
get_rescale_args
–Generate and normalize argument dictionary for a rescale operation.
-
get_scale_args
–Generate and normalize argument dictionary for a scale operation.
-
kernel
– -
kernel_radius
–Compute the effective kernel radius based on the number of taps.
-
multi
–Deprecated alias for
supersample
. -
pretty_string
–Cached property returning a user-friendly string representation.
-
resample
–Resample a video clip to the given format.
-
resample_function
– -
rescale
–Rescale a clip to the given resolution from a previously descaled clip,
-
rescale_function
– -
scale
–Scale a clip to the given resolution, with aspect ratio and linear light support.
-
scale_function
– -
shift
–Apply a subpixel shift to the clip using the kernel's scaling logic.
-
supersample
–Supersample a clip by a given scaling factor.
Attributes:
-
kwargs
(dict[str, Any]
) –Arguments passed to the implemented funcs or internal scale function.
-
taps
–
Source code
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|
kwargs instance-attribute
¶
Arguments passed to the implemented funcs or internal scale function.
cached_property ¶
cached_property(func: Callable[Concatenate[_BaseScalerT, P], T_co])
Bases: cached_property[T_co]
Read only version of functools.cached_property.
Source code
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|
descale ¶
descale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Descale a clip to the given resolution, with image borders handling and sampling grid alignment, optionally using linear light processing.
Supports both progressive and interlaced sources. When interlaced, it will separate fields, perform per-field descaling, and weave them back.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target descaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target descaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during descaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
descale_function
.
Returns:
-
ConstantFormatVideoNode
–The descaled video node, optionally processed in linear light.
Source code
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|
descale_function ¶
descale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
ensure_obj classmethod
¶
ensure_obj(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> Self
Ensure that the given kernel input is returned as a kernel instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel name, class, or instance. Defaults to current class if None.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
Self
–The resolved and instantiated kernel.
Source code
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|
from_param classmethod
¶
from_param(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> type[Self]
Resolve and return a kernel class from a string name, class type, or instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel identifier as a string, class type, or instance. If None, defaults to the current class.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
type[Self]
–The resolved kernel class.
Raises:
-
UnknownKernelError
–If the kernel could not be identified.
Source code
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|
get_descale_args ¶
get_descale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a descale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the descale function.
Returns:
Source code
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|
get_params_args ¶
get_params_args(
is_descale: bool,
clip: VideoNode,
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate a base set of parameters to pass for scaling, descaling, or resampling.
Parameters:
-
is_descale
¶bool
) –Whether this is for a descale operation.
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments to include.
Returns:
Source code
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|
get_resample_args ¶
get_resample_args(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None,
matrix_in: MatrixT | None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a resample operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
) –Target color matrix.
-
matrix_in
¶MatrixT | None
) –Source color matrix.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the resample function.
Returns:
Source code
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|
get_rescale_args ¶
get_rescale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a rescale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the rescale function.
Returns:
Source code
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|
get_scale_args ¶
get_scale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a scale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the scale function.
Returns:
Source code
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|
kernel ¶
Source code
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|
kernel_radius ¶
kernel_radius() -> int
Compute the effective kernel radius based on the number of taps.
Returns:
-
int
–Radius as the ceiling of
taps
.
Source code
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|
multi ¶
multi(
clip: VideoNodeT,
multi: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Deprecated alias for supersample
.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
multi
¶float
, default:2.0
) –Supersampling factor.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Source code
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|
pretty_string ¶
pretty_string() -> str
Cached property returning a user-friendly string representation.
Returns:
-
str
–Pretty-printed string with arguments.
Source code
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|
resample ¶
resample(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None = None,
matrix_in: MatrixT | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Resample a video clip to the given format.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
, default:None
) –An optional color transformation matrix to apply.
-
matrix_in
¶MatrixT | None
, default:None
) –An optional input matrix for color transformations.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments passed to the
resample_function
.
Returns:
-
ConstantFormatVideoNode
–The resampled clip.
Source code
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|
resample_function ¶
resample_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
rescale ¶
rescale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Rescale a clip to the given resolution from a previously descaled clip, with image borders handling and sampling grid alignment, optionally using linear light processing.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target scaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target scaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before rescaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during rescaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during rescaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
rescale_function
.
Returns:
-
ConstantFormatVideoNode
–The scaled clip.
Source code
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|
rescale_function ¶
rescale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
scale ¶
scale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]] = (
0,
0,
),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: BorderHandling = MIRROR,
sample_grid_model: SampleGridModel = MATCH_EDGES,
sar: Sar | float | bool | None = None,
dar: Dar | float | bool | None = None,
dar_in: Dar | bool | float | None = None,
keep_ar: bool | None = None,
blur: float | None = None,
**kwargs: Any
) -> VideoNode | ConstantFormatVideoNode
Scale a clip to the given resolution, with aspect ratio and linear light support.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target height (defaults to clip height if None).
-
shift
¶tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling. If a tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
sar
¶Sar | float | bool | None
, default:None
) –Sample aspect ratio to assume or convert to.
-
dar
¶Dar | float | bool | None
, default:None
) –Desired display aspect ratio.
-
dar_in
¶Dar | bool | float | None
, default:None
) –Input display aspect ratio, if different from clip's.
-
keep_ar
¶bool | None
, default:None
) –Whether to adjust dimensions to preserve aspect ratio.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
Returns:
-
VideoNode | ConstantFormatVideoNode
–Scaled clip, optionally aspect-corrected and linearized.
Source code
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|
scale_function ¶
scale_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> VideoNode
Source code
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|
shift ¶
shift(
clip: VideoNode,
shifts_or_top: float | tuple[float, float] | list[float],
shift_left: float | list[float] | None = None,
/,
**kwargs: Any,
) -> ConstantFormatVideoNode
Apply a subpixel shift to the clip using the kernel's scaling logic.
If a single float or tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shifts_or_top
¶float | tuple[float, float] | list[float]
) –Either a single vertical shift, a (top, left) tuple, or a list of vertical shifts.
-
shift_left
¶float | list[float] | None
, default:None
) –Horizontal shift or list of horizontal shifts. Ignored if
shifts_or_top
is a tuple. -
kwargs
¶Any
, default:{}
) –Additional arguments passed to the internal
scale
call.
Returns:
-
ConstantFormatVideoNode
–A new clip with the applied shift.
Raises:
-
VariableFormatError
–If the input clip has variable format.
-
CustomValueError
–If the input clip is GRAY but lists of shift has been passed.
Source code
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|
supersample ¶
supersample(
clip: VideoNodeT,
rfactor: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Supersample a clip by a given scaling factor.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
rfactor
¶float
, default:2.0
) –Scaling factor for supersampling.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Raises:
-
CustomValueError
–If resulting resolution is non-positive.
Source code
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|
Sinc ¶
Bases: CustomComplexTapsKernel
Sinc resizer.
Classes:
-
cached_property
–Read only version of functools.cached_property.
Methods:
-
descale
–Descale a clip to the given resolution, with image borders handling and sampling grid alignment,
-
descale_function
– -
ensure_obj
–Ensure that the given kernel input is returned as a kernel instance.
-
from_param
–Resolve and return a kernel class from a string name, class type, or instance.
-
get_descale_args
–Generate and normalize argument dictionary for a descale operation.
-
get_params_args
–Generate a base set of parameters to pass for scaling, descaling, or resampling.
-
get_resample_args
–Generate and normalize argument dictionary for a resample operation.
-
get_rescale_args
–Generate and normalize argument dictionary for a rescale operation.
-
get_scale_args
–Generate and normalize argument dictionary for a scale operation.
-
kernel
– -
kernel_radius
–Compute the effective kernel radius based on the number of taps.
-
multi
–Deprecated alias for
supersample
. -
pretty_string
–Cached property returning a user-friendly string representation.
-
resample
–Resample a video clip to the given format.
-
resample_function
– -
rescale
–Rescale a clip to the given resolution from a previously descaled clip,
-
rescale_function
– -
scale
–Scale a clip to the given resolution, with aspect ratio and linear light support.
-
scale_function
– -
shift
–Apply a subpixel shift to the clip using the kernel's scaling logic.
-
supersample
–Supersample a clip by a given scaling factor.
Attributes:
-
kwargs
(dict[str, Any]
) –Arguments passed to the implemented funcs or internal scale function.
-
taps
–
Source code
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|
kwargs instance-attribute
¶
Arguments passed to the implemented funcs or internal scale function.
cached_property ¶
cached_property(func: Callable[Concatenate[_BaseScalerT, P], T_co])
Bases: cached_property[T_co]
Read only version of functools.cached_property.
Source code
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|
descale ¶
descale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Descale a clip to the given resolution, with image borders handling and sampling grid alignment, optionally using linear light processing.
Supports both progressive and interlaced sources. When interlaced, it will separate fields, perform per-field descaling, and weave them back.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target descaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target descaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during descaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
descale_function
.
Returns:
-
ConstantFormatVideoNode
–The descaled video node, optionally processed in linear light.
Source code
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|
descale_function ¶
descale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
ensure_obj classmethod
¶
ensure_obj(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> Self
Ensure that the given kernel input is returned as a kernel instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel name, class, or instance. Defaults to current class if None.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
Self
–The resolved and instantiated kernel.
Source code
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|
from_param classmethod
¶
from_param(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> type[Self]
Resolve and return a kernel class from a string name, class type, or instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel identifier as a string, class type, or instance. If None, defaults to the current class.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
type[Self]
–The resolved kernel class.
Raises:
-
UnknownKernelError
–If the kernel could not be identified.
Source code
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|
get_descale_args ¶
get_descale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a descale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the descale function.
Returns:
Source code
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|
get_params_args ¶
get_params_args(
is_descale: bool,
clip: VideoNode,
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate a base set of parameters to pass for scaling, descaling, or resampling.
Parameters:
-
is_descale
¶bool
) –Whether this is for a descale operation.
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments to include.
Returns:
Source code
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|
get_resample_args ¶
get_resample_args(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None,
matrix_in: MatrixT | None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a resample operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
) –Target color matrix.
-
matrix_in
¶MatrixT | None
) –Source color matrix.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the resample function.
Returns:
Source code
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|
get_rescale_args ¶
get_rescale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a rescale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the rescale function.
Returns:
Source code
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|
get_scale_args ¶
get_scale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a scale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the scale function.
Returns:
Source code
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|
kernel ¶
Source code
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|
kernel_radius ¶
kernel_radius() -> int
Compute the effective kernel radius based on the number of taps.
Returns:
-
int
–Radius as the ceiling of
taps
.
Source code
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|
multi ¶
multi(
clip: VideoNodeT,
multi: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Deprecated alias for supersample
.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
multi
¶float
, default:2.0
) –Supersampling factor.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Source code
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|
pretty_string ¶
pretty_string() -> str
Cached property returning a user-friendly string representation.
Returns:
-
str
–Pretty-printed string with arguments.
Source code
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|
resample ¶
resample(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None = None,
matrix_in: MatrixT | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Resample a video clip to the given format.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
, default:None
) –An optional color transformation matrix to apply.
-
matrix_in
¶MatrixT | None
, default:None
) –An optional input matrix for color transformations.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments passed to the
resample_function
.
Returns:
-
ConstantFormatVideoNode
–The resampled clip.
Source code
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|
resample_function ¶
resample_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
rescale ¶
rescale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Rescale a clip to the given resolution from a previously descaled clip, with image borders handling and sampling grid alignment, optionally using linear light processing.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target scaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target scaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before rescaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during rescaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during rescaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
rescale_function
.
Returns:
-
ConstantFormatVideoNode
–The scaled clip.
Source code
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|
rescale_function ¶
rescale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
scale ¶
scale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]] = (
0,
0,
),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: BorderHandling = MIRROR,
sample_grid_model: SampleGridModel = MATCH_EDGES,
sar: Sar | float | bool | None = None,
dar: Dar | float | bool | None = None,
dar_in: Dar | bool | float | None = None,
keep_ar: bool | None = None,
blur: float | None = None,
**kwargs: Any
) -> VideoNode | ConstantFormatVideoNode
Scale a clip to the given resolution, with aspect ratio and linear light support.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target height (defaults to clip height if None).
-
shift
¶tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling. If a tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
sar
¶Sar | float | bool | None
, default:None
) –Sample aspect ratio to assume or convert to.
-
dar
¶Dar | float | bool | None
, default:None
) –Desired display aspect ratio.
-
dar_in
¶Dar | bool | float | None
, default:None
) –Input display aspect ratio, if different from clip's.
-
keep_ar
¶bool | None
, default:None
) –Whether to adjust dimensions to preserve aspect ratio.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
Returns:
-
VideoNode | ConstantFormatVideoNode
–Scaled clip, optionally aspect-corrected and linearized.
Source code
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|
scale_function ¶
scale_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> VideoNode
Source code
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|
shift ¶
shift(
clip: VideoNode,
shifts_or_top: float | tuple[float, float] | list[float],
shift_left: float | list[float] | None = None,
/,
**kwargs: Any,
) -> ConstantFormatVideoNode
Apply a subpixel shift to the clip using the kernel's scaling logic.
If a single float or tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shifts_or_top
¶float | tuple[float, float] | list[float]
) –Either a single vertical shift, a (top, left) tuple, or a list of vertical shifts.
-
shift_left
¶float | list[float] | None
, default:None
) –Horizontal shift or list of horizontal shifts. Ignored if
shifts_or_top
is a tuple. -
kwargs
¶Any
, default:{}
) –Additional arguments passed to the internal
scale
call.
Returns:
-
ConstantFormatVideoNode
–A new clip with the applied shift.
Raises:
-
VariableFormatError
–If the input clip has variable format.
-
CustomValueError
–If the input clip is GRAY but lists of shift has been passed.
Source code
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|
supersample ¶
supersample(
clip: VideoNodeT,
rfactor: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Supersample a clip by a given scaling factor.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
rfactor
¶float
, default:2.0
) –Scaling factor for supersampling.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Raises:
-
CustomValueError
–If resulting resolution is non-positive.
Source code
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|
Welch ¶
Bases: CustomComplexTapsKernel
Welch kernel.
Initialize the kernel with a specific number of taps and optional keyword arguments.
These keyword arguments are automatically forwarded to the _implemented_funcs
methods but only if the method explicitly accepts them as named parameters. If the same keyword is passed to both __init__
and one of the _implemented_funcs
, the one passed to func
takes precedence.
Parameters:
-
taps
¶float
) –Determines the radius of the kernel.
-
kwargs
¶Any
, default:{}
) –Keyword arguments that configure the internal scaling behavior.
Classes:
-
cached_property
–Read only version of functools.cached_property.
Methods:
-
descale
–Descale a clip to the given resolution, with image borders handling and sampling grid alignment,
-
descale_function
– -
ensure_obj
–Ensure that the given kernel input is returned as a kernel instance.
-
from_param
–Resolve and return a kernel class from a string name, class type, or instance.
-
get_descale_args
–Generate and normalize argument dictionary for a descale operation.
-
get_params_args
–Generate a base set of parameters to pass for scaling, descaling, or resampling.
-
get_resample_args
–Generate and normalize argument dictionary for a resample operation.
-
get_rescale_args
–Generate and normalize argument dictionary for a rescale operation.
-
get_scale_args
–Generate and normalize argument dictionary for a scale operation.
-
kernel
– -
kernel_radius
–Compute the effective kernel radius based on the number of taps.
-
multi
–Deprecated alias for
supersample
. -
pretty_string
–Cached property returning a user-friendly string representation.
-
resample
–Resample a video clip to the given format.
-
resample_function
– -
rescale
–Rescale a clip to the given resolution from a previously descaled clip,
-
rescale_function
– -
scale
–Scale a clip to the given resolution, with aspect ratio and linear light support.
-
scale_function
– -
shift
–Apply a subpixel shift to the clip using the kernel's scaling logic.
-
supersample
–Supersample a clip by a given scaling factor.
Attributes:
-
kwargs
(dict[str, Any]
) –Arguments passed to the implemented funcs or internal scale function.
-
taps
–
Source code
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|
kwargs instance-attribute
¶
Arguments passed to the implemented funcs or internal scale function.
cached_property ¶
cached_property(func: Callable[Concatenate[_BaseScalerT, P], T_co])
Bases: cached_property[T_co]
Read only version of functools.cached_property.
Source code
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|
descale ¶
descale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Descale a clip to the given resolution, with image borders handling and sampling grid alignment, optionally using linear light processing.
Supports both progressive and interlaced sources. When interlaced, it will separate fields, perform per-field descaling, and weave them back.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target descaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target descaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during descaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
descale_function
.
Returns:
-
ConstantFormatVideoNode
–The descaled video node, optionally processed in linear light.
Source code
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|
descale_function ¶
descale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
ensure_obj classmethod
¶
ensure_obj(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> Self
Ensure that the given kernel input is returned as a kernel instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel name, class, or instance. Defaults to current class if None.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
Self
–The resolved and instantiated kernel.
Source code
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|
from_param classmethod
¶
from_param(
kernel: KernelLike | None = None, /, func_except: FuncExceptT | None = None
) -> type[Self]
Resolve and return a kernel class from a string name, class type, or instance.
Parameters:
-
kernel
¶KernelLike | None
, default:None
) –Kernel identifier as a string, class type, or instance. If None, defaults to the current class.
-
func_except
¶FuncExceptT | None
, default:None
) –Function returned for custom error handling.
Returns:
-
type[Self]
–The resolved kernel class.
Raises:
-
UnknownKernelError
–If the kernel could not be identified.
Source code
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|
get_descale_args ¶
get_descale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a descale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the descale function.
Returns:
Source code
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|
get_params_args ¶
get_params_args(
is_descale: bool,
clip: VideoNode,
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate a base set of parameters to pass for scaling, descaling, or resampling.
Parameters:
-
is_descale
¶bool
) –Whether this is for a descale operation.
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments to include.
Returns:
Source code
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|
get_resample_args ¶
get_resample_args(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None,
matrix_in: MatrixT | None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a resample operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
) –Target color matrix.
-
matrix_in
¶MatrixT | None
) –Source color matrix.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the resample function.
Returns:
Source code
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|
get_rescale_args ¶
get_rescale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a rescale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the rescale function.
Returns:
Source code
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|
get_scale_args ¶
get_scale_args(
clip: VideoNode,
shift: tuple[TopShift, LeftShift] = (0, 0),
width: int | None = None,
height: int | None = None,
**kwargs: Any
) -> dict[str, Any]
Generate and normalize argument dictionary for a scale operation.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Vertical and horizontal shift to apply.
-
width
¶int | None
, default:None
) –Target width.
-
height
¶int | None
, default:None
) –Target height.
-
kwargs
¶Any
, default:{}
) –Additional arguments to pass to the scale function.
Returns:
Source code
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|
kernel ¶
Source code
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|
kernel_radius ¶
kernel_radius() -> int
Compute the effective kernel radius based on the number of taps.
Returns:
-
int
–Radius as the ceiling of
taps
.
Source code
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|
multi ¶
multi(
clip: VideoNodeT,
multi: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Deprecated alias for supersample
.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
multi
¶float
, default:2.0
) –Supersampling factor.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Source code
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|
pretty_string ¶
pretty_string() -> str
Cached property returning a user-friendly string representation.
Returns:
-
str
–Pretty-printed string with arguments.
Source code
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|
resample ¶
resample(
clip: VideoNode,
format: int | VideoFormatT | HoldsVideoFormatT,
matrix: MatrixT | None = None,
matrix_in: MatrixT | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Resample a video clip to the given format.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
format
¶int | VideoFormatT | HoldsVideoFormatT
) –The target video format, which can either be: - an integer format ID, - a
vs.PresetVideoFormat
orvs.VideoFormat
, - or a source from which a validVideoFormat
can be extracted. -
matrix
¶MatrixT | None
, default:None
) –An optional color transformation matrix to apply.
-
matrix_in
¶MatrixT | None
, default:None
) –An optional input matrix for color transformations.
-
kwargs
¶Any
, default:{}
) –Additional keyword arguments passed to the
resample_function
.
Returns:
-
ConstantFormatVideoNode
–The resampled clip.
Source code
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|
resample_function ¶
resample_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
rescale ¶
rescale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: ShiftT = (0, 0),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: int | BorderHandling = MIRROR,
sample_grid_model: int | SampleGridModel = MATCH_EDGES,
field_based: FieldBasedT | None = None,
ignore_mask: VideoNode | None = None,
blur: float | None = None,
**kwargs: Any
) -> ConstantFormatVideoNode
Rescale a clip to the given resolution from a previously descaled clip, with image borders handling and sampling grid alignment, optionally using linear light processing.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target scaled width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target scaled height (defaults to clip height if None).
-
shift
¶ShiftT
, default:(0, 0)
) –Subpixel shift (top, left) or per-field shifts.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before rescaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶int | BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶int | SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
field_based
¶FieldBasedT | None
, default:None
) –Field-based processing mode (interlaced or progressive).
-
ignore_mask
¶VideoNode | None
, default:None
) –Optional mask specifying areas to ignore during rescaling.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during rescaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments passed to
rescale_function
.
Returns:
-
ConstantFormatVideoNode
–The scaled clip.
Source code
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|
rescale_function ¶
rescale_function(
clip: VideoNode, width: int, height: int, *args: Any, **kwargs: Any
) -> ConstantFormatVideoNode
Source code
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|
scale ¶
scale(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
shift: tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]] = (
0,
0,
),
*,
linear: bool | None = None,
sigmoid: bool | tuple[Slope, Center] = False,
border_handling: BorderHandling = MIRROR,
sample_grid_model: SampleGridModel = MATCH_EDGES,
sar: Sar | float | bool | None = None,
dar: Dar | float | bool | None = None,
dar_in: Dar | bool | float | None = None,
keep_ar: bool | None = None,
blur: float | None = None,
**kwargs: Any
) -> VideoNode | ConstantFormatVideoNode
Scale a clip to the given resolution, with aspect ratio and linear light support.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
width
¶int | None
, default:None
) –Target width (defaults to clip width if None).
-
height
¶int | None
, default:None
) –Target height (defaults to clip height if None).
-
shift
¶tuple[TopShift | list[TopShift], LeftShift | list[LeftShift]]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling. If a tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
-
linear
¶bool | None
, default:None
) –Whether to linearize the input before descaling. If None, inferred from sigmoid.
-
sigmoid
¶bool | tuple[Slope, Center]
, default:False
) –Whether to use sigmoid transfer curve. Can be True, False, or a tuple of (slope, center).
True
applies the defaults values (6.5, 0.75). Keep in mind sigmoid slope has to be in range 1.0-20.0 (inclusive) and sigmoid center has to be in range 0.0-1.0 (inclusive). -
border_handling
¶BorderHandling
, default:MIRROR
) –Method for handling image borders during sampling.
-
sample_grid_model
¶SampleGridModel
, default:MATCH_EDGES
) –Model used to align sampling grid.
-
sar
¶Sar | float | bool | None
, default:None
) –Sample aspect ratio to assume or convert to.
-
dar
¶Dar | float | bool | None
, default:None
) –Desired display aspect ratio.
-
dar_in
¶Dar | bool | float | None
, default:None
) –Input display aspect ratio, if different from clip's.
-
keep_ar
¶bool | None
, default:None
) –Whether to adjust dimensions to preserve aspect ratio.
-
blur
¶float | None
, default:None
) –Amount of blur to apply during scaling.
Returns:
-
VideoNode | ConstantFormatVideoNode
–Scaled clip, optionally aspect-corrected and linearized.
Source code
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|
scale_function ¶
scale_function(
clip: VideoNode,
width: int | None = None,
height: int | None = None,
*args: Any,
**kwargs: Any
) -> VideoNode
Source code
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|
shift ¶
shift(
clip: VideoNode,
shifts_or_top: float | tuple[float, float] | list[float],
shift_left: float | list[float] | None = None,
/,
**kwargs: Any,
) -> ConstantFormatVideoNode
Apply a subpixel shift to the clip using the kernel's scaling logic.
If a single float or tuple is provided, it is used uniformly. If a list is given, the shift is applied per plane.
Keyword arguments passed during initialization are automatically injected here, unless explicitly overridden by the arguments provided at call time. Only arguments that match named parameters in this method are injected.
Parameters:
-
clip
¶VideoNode
) –The source clip.
-
shifts_or_top
¶float | tuple[float, float] | list[float]
) –Either a single vertical shift, a (top, left) tuple, or a list of vertical shifts.
-
shift_left
¶float | list[float] | None
, default:None
) –Horizontal shift or list of horizontal shifts. Ignored if
shifts_or_top
is a tuple. -
kwargs
¶Any
, default:{}
) –Additional arguments passed to the internal
scale
call.
Returns:
-
ConstantFormatVideoNode
–A new clip with the applied shift.
Raises:
-
VariableFormatError
–If the input clip has variable format.
-
CustomValueError
–If the input clip is GRAY but lists of shift has been passed.
Source code
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supersample ¶
supersample(
clip: VideoNodeT,
rfactor: float = 2.0,
shift: tuple[TopShift, LeftShift] = (0, 0),
**kwargs: Any
) -> VideoNodeT
Supersample a clip by a given scaling factor.
Parameters:
-
clip
¶VideoNodeT
) –The source clip.
-
rfactor
¶float
, default:2.0
) –Scaling factor for supersampling.
-
shift
¶tuple[TopShift, LeftShift]
, default:(0, 0)
) –Subpixel shift (top, left) applied during scaling.
-
kwargs
¶Any
, default:{}
) –Additional arguments forwarded to the scale function.
Returns:
-
VideoNodeT
–The supersampled clip.
Raises:
-
CustomValueError
–If resulting resolution is non-positive.
Source code
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