[FFmpeg-trac] #200(undetermined:new): aac_latm - failure decoding audio stream when audio configuration changes

[FFmpeg]

#200: aac_latm - failure decoding audio stream when audio configuration changes
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 Reporter:  gmcallow      |        Type:  defect
   Status:  new           |    Priority:  normal
Component:  undetermined  |     Version:  unspecified
 Keywords:                |  Blocked By:
 Blocking:                |  Reproduced:  0
 Analyzed:  0             |
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 After testing early Freeview HD support with MythTV, on some recordings on
 audio would stop partway through the recording.  This typically happens on
 program start/end and the following error is reported:

 [aac_latm @ 0xf13bc0]channel element 0.0 is not allocated

 Using a recorded file, both VLC and Mplayer exhibit the same problem,
 which indicates FFMpeg as the likely source.  What appears to happen is
 there is a change in audio configuration in some of the streams from
 stereo to six speakers and back again.  FFMpeg can decode both
 configurations fine, but fails if a transition occurs mid-stream.

 I've posted a 50MB clip that exhibits the problem at:

 http://www.mediafire.com/?5zx2x3zv2g6hxys

 The audio decodes fine for the first three quarters of the clip, and then
 fails when the program starts.

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/200>
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