[FFmpeg-trac] #4998(avformat:new): m4a files created by FFmpeg aren't supported by SanDisk Clip Sport/Jam.

[FFmpeg]

#4998: m4a files created by FFmpeg aren't supported by SanDisk Clip Sport/Jam.
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             Reporter:  bat999       |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  avformat
              Version:  unspecified  |               Resolution:
             Keywords:  aac mov      |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by bat999):

 Yes, the avconv file does play OK, but that's because it's a very short
 clip.
 Only avconv m4a files <= 40 seconds duration will play in Sansa Clip Jam.
 With mp4creator muxer it will play files <= 30 minutes.
 So avconv isn't the solution after all.

 There are many ipod options with command "ffmpeg -h muxer=ipod".
 But I don't feel inclined to plough through them blindly.
 Maybe the '''AtomicParsley -T''' data from the '''mp4creator''' muxed file
 would indicate which ipod option to try.

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Ticket URL: <https://trac.ffmpeg.org/ticket/4998#comment:10>
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