On Wed, May 10, 2017 at 5:41 AM, SviMik <svi...@gmail.com> wrote: > > Great answer, thank you for the idea! I have tried to run it, and it > produced me a black screen (all zeroes), but I think it may be my fault > somewhere. >
In the first geq filter, add a='p(X,Y)' after the b expression. Turns out the geq initializes alpha to 1 if no expression is provided. Ideally, it ought to pass through. _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
