[FFmpeg-trac] #384(undetermined:open): Incorrect number of frames reported with .3gp file

[FFmpeg]

#384: Incorrect number of frames reported with .3gp file
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Reporter:  hackish      |       Owner:
    Type:  defect       |      Status:  open
Priority:  normal       |   Component:  undetermined
 Version:  unspecified  |  Resolution:
Keywords:  frame count  |  Blocked By:
Blocking:               |  Reproduced:  0
Analyzed:  0            |
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Comment (by hackish):

 Ok, this might not be an ffmpeg problem. OpenCV uses ffmpeg to get the
 frame count from a file so it might be its use of ffmpeg that is
 incorrect. I have not figured out a way to get ffprobe to give me the
 frame count but adding the vsync 0 to ffprobe appears to work. Can you let
 me know how to determine how many duplicates there are within ffmpeg?

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Ticket URL: <https://avcodec.org/trac/ffmpeg/ticket/384#comment:3>
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