Alphaextract¶
Description
This effect/filter extracts the alpha component from the input as a grayscale video. This is especially useful with the Alphamerge effect/filter.
If the source does not have an alpha channel the following error comes up:
Description
This effect/filter extracts the alpha component from the input as a grayscale video. This is especially useful with the Alphamerge effect/filter.
If the source does not have an alpha channel the following error comes up: