In your ffmpeg output, all frames have the same time=26:19:06.00 and
that could indicate an overflow in the PTS (presentation time stamp)
values probably because your video is part of a very long video stream.
Add the filter showinfo to your command.
ffmpeg -i input.mpg -vf setpts='N*FR',showvideo .......
That should give out information about each decoded video frame.
Something like that
[Parsed_showinfo_0 @ 0x7f5e58cfe580] n: 122 pts: 3160 pts_time:3.16
pos: 981301 fmt:yuv420p ...
In a proper video, pts and pts_time are expected to be strictly
increasing. If this is not the case then you could try to reassign the
pts using the setpts filter.
ffmpeg -i input.mpg -vf setpts='N*FR',showvideo .......
I am not sure that 'N*FR' is the appropriate formula. The idea is to
recreate a pts value that makes sense. (N=the frame numeber, FR=the
framerate).
See http://ffmpeg.org/ffmpeg-all.html#setpts_002c-asetpts for the other
variables that can be used in setpts.
PS: When I use setpts=10000 on a valid video, I only get 1 output jpeg
file so that tells me that a constant pts could be the problem.
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