[FFmpeg-trac] #10942(ffmpeg:new): Transcoding to mp2 within an mp4 container will be recognized as mp3

[FFmpeg]

#10942: Transcoding to mp2 within an mp4 container will be recognized as mp3
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             Reporter:  Olaf Ahrens  |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  ffmpeg
              Version:  git-master   |               Resolution:
             Keywords:  mp4 mp2      |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by quinkblack):

 It's a known issue, and caused by the specification since it defined the
 same config for MP2 and MP3. So with an mp4 container, we don't know
 whether it's MP2 or MP3 until decoding.
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Ticket URL: <https://trac.ffmpeg.org/ticket/10942#comment:3>
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