2017-07-21 15:51 GMT+02:00 Nicolas George <geo...@nsup.org>: > Le tridi 3 thermidor, an CCXXV, Carl Eugen Hoyos a écrit : >> alpha_value = x * 255 / width; >> or >> alpha_value = y * 255 / height; >> >> Sorry for being unclear, Carl Eugen > > Oh, you mean a gradient on the alpha channel. It is not really possible > without making the code more complex and I think significantly slower.
> A coarse gradient between the different vertical bands is easy, but the > alpha must be constant in each band, just like the color. (Why?) > A gradient on the undulating diagonal line is possible and easy, OTOH, > since it already has a color gradient. Any change that provides different transparency values on one frame is a useful fix for a long-standing bug / missing feature imo. Thank you, Carl Eugen _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
