alpha channel support

[benitogf]

hello, is there any chance to get some help adding the alpha channel support to this library? https://bugs.chromium.org/p/webm/issues/detail?id=1442

trying to get it to work on godot and the existing plugin uses this library zombietype/godot-video-reference#3

[zaps166]

I never used alpha channel in video so far. Isn't FFmpeg a better choice?

[benitogf]

theres no working plugin with ffmpeg at the moment, only one is using this library :/