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Audio out of sync AVI to DVD

Discussion in 'MPEG-1 and MPEG-2 encoding (AVI to DVD)' started by 2wacky, Apr 18, 2007.

  1. 2wacky

    2wacky Member

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    I just recently converted my avi file into a dvd file
    but before i burned it i played it with gom player and
    the audio came somewhat early, i thought it would be ok
    after i burned and it but was i wrong, the audio was still
    out of sync. Before i converted it , it was running
    fine with fine aduio. is there any solution

    i converted with ---- Avi2Dvd

    audio ---- AC-3 ACM Decompressor
    bit rate ---384 kbps

    Thank You,
     
  2. aldaco12

    aldaco12 Active member

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    Try to load that AVI with MediaInfo http://mediainfo.sourceforge.net . Changing the 'means of viewing informaton' you should see if that havi has an audio which has a pre-defined delay.
    I means, whan you extract AC3 audio from a DVD, you have a file like "movie AC3 448 kbps delay -400 ms.AC3"

    Now you have two means:
    1) correct the delay, shifting the AC3 of 400 ms before using it
    2) inserting the 'delayed' sound stream and inserting (doing on VirtualDub "Audio___Interleaving") an audio correction in the A/V interleaving.
    If the AVI has been made by 2), the movie appears in sync, but it is in sync only because you corrected the interleaving in the AVI.
    Alas, when you convert to MPV the video, it is delayed with respect the sound, and therefore the audio delay must be inserted during DVD authoring.
     
    Last edited: Apr 20, 2007
  3. 2wacky

    2wacky Member

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    I am sorry, but i dont quite understand
    what you are saying. Could you possibly
    say it in a more noob way, or more clear.
    sorry, but thank you.
     
  4. mistycat

    mistycat Active member

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    Or, try this for any constant sync loss (free): http://www.alexander-noe.com/video/amg/ Drag your original file into the top window, highlight it and select "generate data". In the lower window, highlight audio and if anything other than 0 appears to the right, select "start" naming and placing the new file as you wish and in a minute or two you'll have a new file to use. Usually works even when the original file shows no sync loss until encoded and I always check my files first.
     
    Last edited: Apr 20, 2007
  5. 2wacky

    2wacky Member

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    Thank You
    MistyCat

    Cheers!!
     

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