[FFmpeg-trac] #6974(undetermined:new): Improve handling of AAC PCE audio channels with segmented MPEG-TS

[FFmpeg]

#6974: Improve handling of AAC PCE audio channels with segmented MPEG-TS
-------------------------------------+-------------------------------------
             Reporter:  redmcg       |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:
              Version:  git-master   |  undetermined
             Keywords:  aac          |               Resolution:
  regression                         |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by redmcg):

 Potential workarounds for those who need them are:
 1. add the option `-ac 2` (to output stereo); or
 2. add the option `-af channelmap=channel_layout=5.1` (to output 5.1 back)

 Note that even though ffmpeg states the output is 5.1 back - mediainfo
 still says:
 {{{
 Channel positions                        : Front: L C R, Side: L R, LFE
 }}}

 So ffmpeg and mediainfo don't see eye to eye. But the commit comment in
 fc9dcfe7d50d7f1b38fb287b4d92b5f3fc4bfb05 says:
 > The [presumably AAC] spec ... does list these layouts as having rear
 speakers

 But I haven't sighted the spec myself - so I can't say which is right.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6974#comment:5>
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