On 5/9/17, SviMik <svi...@gmail.com> wrote: > Let's assume A is a video, and B is a png image with alpha channel. I need > to do the following blending (assuming the format is rgba and B_alpha is in > 0...1 range): > > red = (A_red - B_red * B_alpha) / (1 - B_alpha); > green = (A_green - B_green * B_alpha) / (1 - B_alpha); > blue = (A_blue - B_blue * B_alpha) / (1 - B_alpha);
Those equatitions are very strange. _______________________________________________ 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".
