I have an mpeg2 file that I would like to count the number of frames for using pymedia. After modifying dump_video.py to just count frames, I get 544 frames. However, if I use ffmpeg or mplayer, they tell me that it has 548 frames. If I convert the file to an avi using "ffmpeg -i test.mpg -sameq -vcodec copy -an test.avi" and feed the avi to dump_video.py, I get 547 frames. Which is correct, pymedia or ffmpeg/mplayer? Why are they different? Why is the framecount different between the mpg and the avi? Any help would be greatly appreciated. Thanks in advance.
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