[FFmpeg-trac] #8455(avcodec:open): libaom-av1 damages brightness range by switching yuvj420p to yuv420p

[FFmpeg]

#8455: libaom-av1 damages brightness range by switching yuvj420p to yuv420p
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             Reporter:  john123      |                    Owner:  (none)
                 Type:  enhancement  |                   Status:  open
             Priority:  wish         |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  libaom       |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by john123):

 Thanks. So, I tried that and the output corruption is actually worse in
 terms of black becoming grey. The log does show it did something in that
 the output was "yuv420p(pc, bt709, progressive)".  Visually the output
 looks about twice as bad with those options as it does with the original
 options.
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Ticket URL: <https://trac.ffmpeg.org/ticket/8455#comment:17>
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