[FFmpeg-trac] #9901(undetermined:new): Bug: ffmpeg/ffprobe calls field different from it's header.

[FFmpeg]

#9901: Bug: ffmpeg/ffprobe calls field different from it's header.
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             Reporter:  NY2Da        |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:  METADATA     |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by NY2Da):

 Replying to [comment:4 mkver]:
 It causes alot of errors when using --parse-metadata in yt-dlp. Metadata
 field conversion should be handled separately.
 yt-dlp error I faced -
 https://www.reddit.com/r/youtubedl/comments/wxkpv8/purl_and_description_metadata_missing_when/
 https://www.reddit.com/r/youtubedl/comments/x3g0zh/comment/imrieya/?context=3
 In conclusion yt-dlp(ffmpeg) doesn't know difference between description
 and comment when writting value. And DESCRIPTION and description when
 deleting value.
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Ticket URL: <https://trac.ffmpeg.org/ticket/9901#comment:5>
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