[FFmpeg-devel] [PATCH] libavformat/yuv4mpeg: Add color range support for Y4M Add color_range support in Y4M. Also set pixel format and color_range for YUVJ pixel formats.

[Wang Cao]

>
> My question was which authority defined this metadata for
> y4m? Or which (non-FFmpeg-based) other software
> understands the metadata your patch adds to the files.
>
AFAIK, no other software and authority has defined this metadata
for color range. According to https://linux.die.net/man/5/yuv4mpeg,
we should be able to use X tag to support color range.

Color range would be good to have to give Y4M more capability to
handle HDR(probably) and other pixel formats (.e.g. YUV420P with
full range).
-- 
Wang Cao