nicolab <robelt2525 <at> gmail.com> writes: > ffmpeg -f lavfi -i rgbtestsrc=d=10,format=yuv420p > -vcodec libx264 rgbtestsrc.mp4 > > This is visually rgb color[z] overlayed video. > ffmpeg -i rgbtestsrc.mp4 -vf > split[x][z];[x]format=gray[x1];[x1][z]overlay > -vcodec libx264 10.mp4 > > This is visually rgb color[z] overlayed video. > ffmpeg -i rgbtestsrc.mp4 -ss 1 -vf > split[x][z];[x]format=gray[x1];[x1][z]overlay > -vcodec libx264 11.mp4 > > This is visually rgb color[z] overlayed video, > but output file is visually gray. > ffmpeg -ss 1 -i rgbtestsrc.mp4 -vf > split[x][z];[x]format=gray[x1];[x1][z]overlay > -vcodec libx264 12.mp4
I can confirm that there may be an issue but it is not overlay-related: $ ffmpeg -i input -vf "split[x][z];[x]format=gray[x1];[x1]nullsink" -strict -2 -vcodec jpeg2000 -ss 1 out1.avi $ ffmpeg -ss 1 -i input -vf "split[x][z];[x]format=gray[x1];[x1]nullsink" -strict -2 -vcodec jpeg2000 out2.avi Since the jpeg2000 encoder supports both gray and yuv420p input, the issue is easier to explain imo (but I have no expanation)... Carl Eugen _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
