[FFmpeg-trac] #3361(avcodec:closed): aac_he mono not recogized (reported as stereo)

[FFmpeg]

#3361: aac_he mono not recogized (reported as stereo)
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             Reporter:  Christian    |                    Owner:  (none)
  Ebert                              |
                 Type:  defect       |                   Status:  closed
             Priority:  important    |                Component:  avcodec
              Version:  git-master   |               Resolution:  invalid
             Keywords:  aac          |               Blocked By:
  regression                         |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Balling):

 I suppose if the stereo can happen 100 samples in, then indeed it is more
 safe to output all as stereo and then compare md5 (./ffmpeg -c:a
 libfdk_aac -i ../samples/aac/al_sbr_ps_04_new.mp4 -af
 channelmap=channel_layout=mono:map=0 -f md5 -

 vs

 ./ffmpeg -c:a libfdk_aac -i ../samples/aac/al_sbr_ps_04_new.mp4 -af
 channelmap=channel_layout=mono:map=1 -f md5 -

 But:

 A) fixed decoder should be fixed then to output stereo as well
 B) it would be nice to add a warning that you treat mono as stereo, like
 TrueHD does (until Paul broke mono)
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/3361#comment:25>
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