[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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Changes (by Balling):

 * status:  new => open

Comment:

 yuvj4xxp or more correctly the "j" part of it that specifies full range is
 deprecated in favour of setting -vf
 scale=out_color_matrix=bt709:'''out_range=pc''' -color_primaries bt709
 -color_trc bt709 -colorspace bt709 '''-color_range pc'''

 It was deprecated for a 11 years
 (98aea87b1a3a96b9d82deca09291aaec2f54399e) yet even in 2018 somebody was
 still adding workarounds (80757bed89c361fe2dc56eb61f4cb3b9f9b1aedc due to
 https://news.ycombinator.com/item?id=20036710). Either undeprecate it or
 do something that will not print these problems for new formats like
 jpeg2000 encoder or av1.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/8455#comment:13>
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