Video Operators

The following operators can be applied to a video stream:

Operator	Type	Description
`deinterlace`	object	Converts the stream from interlaced to progressive frames.
`crop`	object	Removes pixels from an input stream.
`scale`	object	Resizes an input stream relative to the output stream dimensions.
`translate`	object	Positions an input stream relative to the output stream dimensions.
`rotate`	object	Rotates an input stream.
`opacity`	object	Sets the opacity of an input stream.
`overlay`	array	Lists the input streams overlaid onto an output stream.

`deinterlace`

Specifies the method used to deinterlace a video stream`.

Method	Description
`weave`	Combines both fields into a frame (60i to 30p).
`blend`	Blends both fields after vertical interpolation to frame height (60i to 30p).
`telecine`	Inverse telecine (60i to 24p).
`field`	Interpolates both fields (60i to 60p).
`weston`	Weston three field algorithm (60i to 30p).

Removes pixels from the top, bottom, left and right edges of the stored image.

Resizes a video stream relative to the target image dimensions.

Property	Type	Description
`mode`	enum	Resizing mode.
`horizontal`	number	Horizontal scaling factor. A value of 1.0 represents 100% of the target image width.
`vertical`	number	Vertical scaling factor. A value of 1.0 represents 100% of the target image height.
`interpolator`	enum	Resizing interpolator: `bilinear`, `bicubic` or `lanczos`.

The resizing mode specifies the method used to scale the source image to the target image dimensions.

Mode	Description
`fill`	Resizes to the target dimensions ignoring the source aspect ratio.
`crop`	Preserves the source image aspect ratio by cropping pixels outside the target dimensions.
`mask`	Preserves the source image aspect ratio by masking any unfilled target pixels.

Rotates a video stream by the specified angle in degrees.

Positions a video stream relative to the target image dimension.

Property	Type	Description
`horizontal`	number	Horizontal translation factor. A value of 1.0 represents 100% of the target image width.
`vertical`	number	Vertical translation factor. A value of 1.0 represents 100% of the target image height.

Sets the normalized opacity of a video stream. A value of 1.0 represents 100% opacity.

Combines multiple video streams. Each element of the array supports the following properties:

Property	Type	Description
`name`	string	Identifies the input stream.
`properties`	object	Input stream configuration properties.
`filter`	array	List of filters applied to the input stream.

Updated about 2 years ago