[FFmpeg-trac] #8338(avformat:new): GoPro metadata not properly handled

[FFmpeg]

#8338: GoPro metadata not properly handled
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             Reporter:  importon     |                    Owner:  (none)
                 Type:  enhancement  |                   Status:  new
             Priority:  wish         |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  mov GPMF     |               Blocked By:
  TMCD                               |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Kamil Filipek):

 Replying to [comment:24 MasterQuestionable]:
 > ͏    Does comment:16 mean "-copy_unknown" doesn't just copy unknown and
 failed saying "unsupported" in current FFmpeg?

 Precisely. The FFmpeg_opts code handles the copy just fine (although,
 looking at the code, I don't see the `copy_unknown` option doing much).
 The streams we just want to copy, appear in the preview of output file
 structure.

 But the re-muxing code present in movenc.c doesn't have any information
 about the `copy_unknown` option being set, so the codec validation code
 throws an error that the codec tag of the stream we want to copy is...
 unknown. This validation is not executed for .mov files, so you can do the
 copy and repackaging into MOV format just fine.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/8338#comment:25>
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