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off sync audio

Discussion in 'Software Apps' started by erwin1978, Sep 29, 2002.

  1. erwin1978 TechSpot Maniac Posts: 327

    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?
    erwin1978, Sep 29, 2002
    #1

  2. 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.
    Nodsu, Sep 30, 2002
    #2

  3. Mictlantecuhtli TS Special Forces 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.
    Mictlantecuhtli, Sep 30, 2002
    #3

  4. SNGX1275 TS Special Forces Posts: 11,891   +117

    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.
    SNGX1275, Sep 30, 2002
    #4

  5. erwin1978 TechSpot Maniac Posts: 327

    That's exactly what I meant, SNGX1275.
    erwin1978, Sep 30, 2002
    #5

  6. Mictlantecuhtli TS Special Forces 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.
    Mictlantecuhtli, Sep 30, 2002
    #6
     
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