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  1. Member nanite2000's Avatar
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    Aug 2006
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    Hi,

    I've been having trouble converting some DVDs to DivX AVIs. I converted one recently, but no matter how hard I try I cannot get the audio in sync.

    I realise that audio sync issues are a bit of a sore spot with DivX vids, but this one's particularly weird.

    If I play the video in Media Player Classic or DivX's own player then the sync issue is hardly noticeable. But if I play the same file in Windows Media Player 10, then the sound is very noticeably out of sync (by around half a second). Why would these players exhibit different behaviour? Do they use different codecs? The DivX watermark shows up in all players, so I assume the same codec is being used.

    I realise that WIndows Media Player has its shortcomings, but I need it to work properly because I use Media Center Edition for vids.

    This is a new DVD and I used DVD Decrypter to extract the VOBs.

    Does anyone know why this may be happening?

    Thanks!
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  2. I'm a MEGA Super Moderator Baldrick's Avatar
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    try play with vlc media player, it has it own codecs. do you get same problem?
    how do you convert to divx after using dvd decrypter? what tool?
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  3. Member nanite2000's Avatar
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    Originally Posted by Baldrick
    how do you convert to divx after using dvd decrypter? what tool?
    I used Dr Divx 2.0.

    After a bit of experimentation, I have found the problem is due to converting the audio track to MP3 instead of preserving the AC3 track. If I preserve the original AC3 track, the sound remains in sync. However, if I set Dr Divx to convert the audio to MP3, the sound goes way out of sync.

    Oddly enough, if I open the MP3 track in a sound editor (like Goldwave) the length of the MP3 track is identical to the video, yet it gets progressively more out of sync by the end of the episode - up to 3 seconds out! But it's the video that falls behind the audio, and yet there are no noticeable dropouts in either the audio or the video.

    Huh?!?

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