off sync audio

By erwin1978
Sep 29, 2002
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  1. I used Virtualdub to join together a divx movie and a wav voice track. The audio sync is off when I advance ahead in the movie. What can I do to fix this?
  2. Nodsu

    Nodsu Newcomer, in training Posts: 9,431

    If I am not mistaken the AVIutls package has a feature to sync AVI audio and video, probably some other video editing software has it too.
  3. Mictlantecuhtli

    Mictlantecuhtli TechSpot Evangelist Posts: 4,916   +9

    You can alter audio interleaving with VirtualDub too. Just add a positive value (delay in milliseconds) if audio is playing too early or negative if it's behind. Set video to "direct stream copy" if you want to process only audio.
  4. SNGX1275

    SNGX1275 TS Forces Special Posts: 12,409   +280

    I think what he means is that the audio is in sync if you let the movie play through, but becomes out of sync when you jump ahead in the movie. I've had this happen to me too on certain movies but I didn't know of a way to get around it. I also have certain mpegs that will not play when they are advanced to a certain point, but will play through that when you just let it play.
  5. erwin1978

    erwin1978 TechSpot Maniac Topic Starter Posts: 327

    That's exactly what I meant, SNGX1275.
  6. Mictlantecuhtli

    Mictlantecuhtli TechSpot Evangelist Posts: 4,916   +9

    That is caused by too few keyframes in MPEG data, not much one can do about it, if re-encoding isn't an option.
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