[FFmpeg-trac] #9941(undetermined:new): Remuxing mp4/dash file takes time that is exponential to the duration

[FFmpeg]

#9941: Remuxing mp4/dash file takes time that is exponential to the duration
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             Reporter:  fireattack   |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by fireattack):

 Replying to [comment:1 Carl Eugen Hoyos]:
 > Can you reproduce with a 5h audio file that you created with FFmpeg?
 > The console output indicates that the input file is broken.

 No I can't, this is specific to this kind of video.

 I agree the input file isn't the most standard due to duplicate MOOV atom,
 but FFMPEG can still read it (albeit takes longer) and generate proper
 output. It just that for some reason it takes exponentially long time for
 FFMPEG to process it.
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Ticket URL: <https://trac.ffmpeg.org/ticket/9941#comment:2>
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