How did you count frames ? After parser or after decode ?
Counting frames after parser (demuxer) _will_ produce wrong results for all
mpeg streams. For avi it is usually correct.
Right now the last frame may get missed in both cases since I did not look
into this issue before.
Dmitry/
----- Original Message -----
From: "Jeffery Cheng" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Tuesday, January 10, 2006 12:08 PM
Subject: [Pymedia-users] framecount mismatch between pymedia and
ffmpeg/mplayer
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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