[FFmpeg-trac] #3799(avformat:new): non Vorbis comment tags in flac appear to be appended

[FFmpeg]

#3799: non Vorbis comment tags in flac appear to be appended
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             Reporter:  llogan       |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  flac         |               Blocked By:
  regression                         |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
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Comment (by mathstuf):

 It's actually the Vorbis tags being appended here (I guess ID3 tags are
 first in the file; if they're second, they should be the only ones). When
 encountering a metadata block, should Vorbis clear the metadata map before
 reading it (easiest solution, but breaks if metadata comes in separate
 blocks (bad))? Should FLAC decoding just ignore ID3 tags (adhering to the
 spec)? If not, what about only when vorbis tags exist (to follow the spec,
 but allow non-conforming files)?

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Ticket URL: <https://trac.ffmpeg.org/ticket/3799#comment:2>
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