Sync problems with DiVX file

Discussion in 'Archived Threads 2001-2004' started by Jeff Kleist, Sep 9, 2002.

  1. Jeff Kleist

    Jeff Kleist Executive Producer

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    I have a DiVX file where the audio progressively goes more and more out of sync. At the beginning it's fine, but by the end, we're talking close to 2 seconds of lag. Any idea on why?
     
  2. Mark Hsieh

    Mark Hsieh Agent

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    Bad encoding most likely..does it happen on any other machines?
     
  3. Jeff Kleist

    Jeff Kleist Executive Producer

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    yes, it's replicateable on 3 different machines, 3 different configs

    Premiere doesn't like DiVX, and given the progressive nature of the out of syncing resynching may be hard. Any suggestions for remuxing a new audio track?
     
  4. John_Berger

    John_Berger Cinematographer

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    I've had that happen as well. The only thing that I can guess is that the encoder incorrectly sets the video frame rate.

    Look for a tool called AVIFRATE, I believe. It's a tiny tool whose sole purpose is to adjust the video frame rate. I've used it many a time to adjust sync problems.

    Now, the issue that I've run into is when it's out of sync in the beginning, good in the middle, then out of sync in the other direction at the end. I'm not sure how to account for that.

    Is your audio good from the very beginning? If so then AVIFRATE should help to correct the problem.
     
  5. Jeff Kleist

    Jeff Kleist Executive Producer

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    Yes, the audio is good at the beginning. by my estimates, it drops another frame every 2 minutes putting it over 2 seconds off at the end of 45min.

    I'll give it a whirl
     
  6. Jeff Kleist

    Jeff Kleist Executive Producer

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    Success! I thought that was the problem, but had no idea how to fix it because Premiere doesn't like DiVX [​IMG]
    boy, that .003fps makes a big difference [​IMG]
     
  7. John_Berger

    John_Berger Cinematographer

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    Sure as hell is sensitive, isn't it? Glad it worked!

    I'm confirming right now (actually, it's probably done) whether or not MSP 6.5 can handle DIVX. All of the options were there, but who knows what will happen (if anything) during the encoding. I'll find out when I get home.
     
  8. Peter D

    Peter D Stunt Coordinator

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    I'm glad you brought this up, Jeff, as I've been having the same general problem myself. Hopefully this utility will take care of it.
     
  9. John_Berger

    John_Berger Cinematographer

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