W dniu 2017-09-25 o 01:42, Carl Eugen Hoyos pisze: > 2017-09-23 19:18 GMT+02:00 Mateusz <mateu...@poczta.onet.pl>: > >> In reality -- current version of DITHER_COPY mess >> up the average color tone. > > You could explain how we can reproduce this.
Please take any video with colors that you can see change to green color -- it could be with human faces, for example free http://media.xiph.org/video/derf/y4m/KristenAndSara_1280x720_60.y4m Copy the video to o.y4m and make some iteration of 8-bit -> 10-bit -> 8-bit conversions: ffmpeg -i o.y4m -y -strict -1 -pix_fmt yuv420p10 t10.y4m ffmpeg -i t10.y4m -y -strict -1 -pix_fmt yuv420p o.y4m Please watch result video -- it should be more green, with pattern and darker. You can watch 'KristenAndSara' video after 100 iteration http://www.msystem.waw.pl/x265/limited.mkv And 100th iteration of 'KristenAndSara' with '-color_range 2' option http://www.msystem.waw.pl/x265/full.mkv Now DITHER_COPY works wrong in both cases (full and limited range). Mateusz _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
