Aurelien Jacobs <[EMAIL PROTECTED]> added the comment: That would be possible. But that would mean the decoder needs to decode 2 totaly independent video streams, and thus it needs to store to 2 separte decoding context. That looks somewhat hackish too. Any other opinon about what's the prefered hack ?
BTW: now that I think about it, the U and V planes of the alpha video are supposed to be all 0s, but they could be used as a covered channel ;-) The current way of decoding the alpha video in a separate stream allows to uncover this channel easily. But anyway, this is not revelant to chose the best hack. ______________________________________________________ FFmpeg issue tracker <[EMAIL PROTECTED]> <https://roundup.mplayerhq.hu/roundup/ffmpeg/issue166> ______________________________________________________
