[FFmpeg-trac] #11309(undetermined:new): ffmpeg 7.1 fails to write color_primaries and color_trc

[FFmpeg]

#11309: ffmpeg 7.1 fails to write color_primaries and color_trc
-------------------------------------+-------------------------------------
             Reporter:  wywh         |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  7.1          |               Resolution:
             Keywords:               |               Blocked By:
  color_primaries color_trc          |
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |
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Comment (by jeeb):

 Replying to [comment:4 Leo Izen]:
 > Seems to me that it's not encoder or muxer dependent. I tried with
 mpeg4+mp4, ffv1+mkv, and reproduced it on Linux with git master.
 >
 > It does appear that the tags that are already set in the stream are
 still written.

 I did note the same, although I don't blame you not reading my long
 sentences :)

 > This seems to be a general issue regarding when/where these global
 options get applied, as you can see that the output definition no longer
 has these color values and if you test other encoders that have color
 value support you will see those also not writing things out.

 My most likely guess is that the AVOptions are applied much earlier in the
 process (see around `fftools/cmdutils.c: av_log(NULL, AV_LOG_DEBUG, "
 matched as AVOption '%s' with "`), before `fftools/ffmpeg_enc.c::enc_open`
 gets called. This would also explain why input overriding works, as
 AVFrame information passing is only done for the encoder. This is more or
 less verified by commenting out one of the lines in that function setting
 any of the parameters you are overriding on command line on the output
 definition side, as that "magically" makes the value propagate.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/11309#comment:6>
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