[FFmpeg-trac] #3622(avformat:reopened): Second audio track in mov sometimes marked as default

[FFmpeg]

#3622: Second audio track in mov sometimes marked as default
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             Reporter:  cehoyos      |                    Owner:
                 Type:  defect       |                   Status:  reopened
             Priority:  important    |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  mov          |               Blocked By:
  regression                         |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
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Comment (by hlclark78):

 @julian, Thank you for the patch, it worked well for me today on 3.3.

 From what I read above, it sounds like the issue is that this logic will
 cause a regression. I did notice that not all the tests passed when
 following the Travis build and test steps. Could a new 'Quicktime' flag be
 added to ffmpeg to enable this one-off behavior? It seems like we should
 start by adding an Acceptance Test for Quicktime that fails under the
 existing production code.

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Ticket URL: <https://trac.ffmpeg.org/ticket/3622#comment:29>
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