Need advices about audio out of sync

[thenamelessthing]

Hi, I think I have inderstand why some of my file are out of sync. It's because of framerate who are not the right for my tv. Ex: I have two file, one with the audio out of sync problem and another who doesn't have the problem. The difference between the two file are the framerate of the video. One have 29.97 and the other have 25. I'm using a ntsc TV. Maybe if I reencode the file I can fix the problem? What do you think of my observation?


File who doesn't have the problem:

*** THIS PROGRAM IS DEPRECATED ***
This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
[mp3 @ 0x99982a0] Header missing
[mpeg4 @ 0x9996120] Invalid and inefficient vfw-avi packed B frames detected

Seems stream 0 codec frame rate differs from container frame rate: 30000.00 (30000/1) -> 29.97 (30000/1001)
Input #0, avi, from 'S04E06 - La poule aux oeufs d'or (1-2).avi':
Metadata:
encoder : VirtualDubMod 1.5.4.1 (build 2178/release)
Duration: 00:20:23.69, start: 0.000000, bitrate: 1165 kb/s
Stream #0.0: Video: mpeg4, yuv420p, 720x544 [PAR 1:1 DAR 45:34], 29.97 fps, 29.97 tbr, 29.97 tbn, 30k tbc
Stream #0.1: Audio: mp3, 44100 Hz, stereo, s16, 112 kb/s
At least one output file must be specified

File who have the problem:

patrick@patrick-RK574AAR-ABA-a1730n:~/.gvfs/SFTP sur 192.168.1.3 en tant que media/data/Dessins_Animes/SD/Picsou$ ffmpeg -i S01E01\ -\ N\'abandonnez\ Pas\ Le\ Navire.avi ffmpeg version 0.8.6-4:0.8.6-0ubuntu0.12.04.1, Copyright (c) 2000-2013 the Libav developers
built on Apr 2 2013 17:00:59 with gcc 4.6.3
*** THIS PROGRAM IS DEPRECATED ***
This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
[mp3 @ 0x8b722a0] Header missing
[mpeg4 @ 0x8b70120] Invalid and inefficient vfw-avi packed B frames detected

Seems stream 0 codec frame rate differs from container frame rate: 30000.00 (30000/1) -> 25.00 (25/1)
Input #0, avi, from 'S01E01 - N'abandonnez Pas Le Navire.avi':
Metadata:
encoder : VirtualDubMod 1.5.4.1 (build 2178/release)
Duration: 00:21:52.20, start: 0.000000, bitrate: 1119 kb/s
Stream #0.0: Video: mpeg4, yuv420p, 720x544 [PAR 1:1 DAR 45:34], 25 fps, 25 tbr, 25 tbn, 30k tbc
Stream #0.1: Audio: mp3, 44100 Hz, stereo, s16, 112 kb/s
At least one output file must be specified

[thenamelessthing]

I have successfully fixed my file who have the sync problem. I have reencoded the file at an different framerate. I have change the 25fps to 29.97 and everythings it's okay. BUT you can notice when you watch a little frame rate mismatch but is VERY better than an out of sync trouble!


I hope this can help other people...