[FFmpeg-trac] #7572(avformat:open): Infinite loop during getting single frame (image2) from HLS/fmp4 video file

[FFmpeg]

#7572: Infinite loop during getting single frame (image2) from HLS/fmp4 video file
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             Reporter:  javer         |                    Owner:
                 Type:  defect        |                   Status:  open
             Priority:  important     |                Component:  avformat
              Version:  git-master    |               Resolution:
             Keywords:  deadlock mov  |               Blocked By:
             Blocking:                |  Reproduced by developer:  1
Analyzed by developer:  0             |
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Comment (by mptcultist):

 the bug(i think): the frag index is marked as being complete early, and as
 such the last sidx in the mp4 is not read, meaning that stream has no
 fragment info, causing the infinite loop later when it's read and has no
 valid data.

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Ticket URL: <https://trac.ffmpeg.org/ticket/7572#comment:14>
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