[FFmpeg-trac] #10379(ffmpeg:new): concat demuxer with stream copy produces wrong duration for flac files

[FFmpeg]

#10379: concat demuxer with stream copy produces wrong duration for flac files
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             Reporter:  slycordinator  |                    Owner:  (none)
                 Type:  defect         |                   Status:  new
             Priority:  normal         |                Component:  ffmpeg
              Version:  git-master     |               Resolution:
             Keywords:                 |               Blocked By:
             Blocking:                 |  Reproduced by developer:  0
Analyzed by developer:  0              |
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Comment (by Elon Musk):

 You can not concat flac files at demuxer level.
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Ticket URL: <https://trac.ffmpeg.org/ticket/10379#comment:2>
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