On 5/9/17, SviMik <[email protected]> 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 [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
