Class VideoFilters

Provides factory methods for creating commonly used video filters.

Inheritance

object

VideoFilters

Inherited Members

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Namespace: FFmpeg.Filters.VideoFilters

Assembly: FFmpeg.dll

Syntax

public static class VideoFilters

Remarks

This class contains convenience methods for creating and initializing video filter contexts. All methods automatically allocate and initialize the created filter.

Methods

CreateFPS(string, Rational, FilterGraph)

Creates a video frame rate filter.

Declaration

public static FilterContext CreateFPS(string name, Rational fps, FilterGraph graph)

Parameters

Type	Name	Description
string	name	The name of the filter instance.
Rational	fps	The desired output frame rate.
FilterGraph	graph	The filter graph that will own the filter.

Returns

Type	Description
FilterContext	The initialized frame rate filter.

Remarks

The FPS filter converts the input stream to the specified output frame rate by dropping or duplicating frames as needed.

CreateFormat(string, FilterGraph, params ReadOnlySpan<PixelFormat>)

Creates a video format filter context that converts input video frames to one of the specified pixel formats. When multiple formats are specified, libavfilter selects a format suitable for the next filter in the filter graph.

Declaration

public static FilterContext CreateFormat(string name, FilterGraph graph, params ReadOnlySpan<PixelFormat> formats)

Parameters

Type	Name	Description
string	name	The name to assign to the filter context.
FilterGraph	graph	The FilterGraph to which the filter context belongs.
ReadOnlySpan<PixelFormat>	formats	The pixel formats to which the input video may be converted.

Returns

Type	Description
FilterContext	A new FilterContext configured with the specified pixel formats.

Exceptions

Type	Condition
ArgumentException	Thrown when formats is empty.

CreateFormat(string, PixelFormat, FilterGraph)

Creates a video format filter context that converts input video frames to the specified pixel format.

Declaration

public static FilterContext CreateFormat(string name, PixelFormat format, FilterGraph graph)

Parameters

Type	Name	Description
string	name	The name to assign to the filter context.
PixelFormat	format	The pixel format to convert the input video to.
FilterGraph	graph	The FilterGraph to which the filter context belongs.

Returns

Type	Description
FilterContext	A new FilterContext configured to convert video frames to the specified pixel format.

CreateScale(string, int, int, FilterGraph)

Creates a video scale filter.

Declaration

public static FilterContext CreateScale(string name, int width, int height, FilterGraph graph)

Parameters

Type	Name	Description
string	name	The name of the filter instance.
int	width	The output width, in pixels.
int	height	The output height, in pixels.
FilterGraph	graph	The filter graph that will own the filter.

Returns

Type	Description
FilterContext	The initialized scale filter.

Remarks

The scale filter resizes video frames to the specified dimensions.