Alphaextract¶
![kdenlive2304_effects-alphaextract](../../../_images/kdenlive2304_effects-alphaextract.webp)
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:
![kdenlive2304_effects-alphaextract_error](../../../_images/kdenlive2304_effects-alphaextract_error.webp)
Alphaextract effect error message¶