Xvid/Divx audio out-of-sync

Discussion in 'DivX / XviD' started by mike8333, Nov 12, 2006.

  1. mike8333

    mike8333 Member

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    Hi guys,
    I know this is the old problem, but I have comb the net in vain!
    I have so far compressed more than 100DVDs, all encountered out-of-sync problem was just delay, but this one is problematic.

    My problem:
    (Monster House) Video/audio starts ok, FWD to 1 hr...the video is 2mins late.

    Wat I use:
    DVDFabDecrypt
    AutoGK 2.27/2.37B

    Wat I have done:
    Re-installed AutoGK
    Tried both Divx Xvid codec
    Create audio and video separately

    Note:
    I had the video and audio(ac3) on separate files, playing them on 2 instances of VLC player, the problem seems to be non-existence, but when I mux them (using VDubMod)the problem re-surface.

    Wat can I do, please help!
    Mike
     
  2. rdmercer1

    rdmercer1 Active member

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    are you puting the files on a dvd? also are the file out of sych before you compressed them? did you get the file off the net? or did you rip fron a disk?
     
  3. aldaco12

    aldaco12 Active member

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    Extrach the AC3 sound from the VOB set using ReJig in IFO mode and the box 'correct AC3 delay' checked.

    Or determine the A/V constant delay which that DVD has and insert it in VDubMod, that is:
    - do Stream___Stream List;
    - then right click the audio stream and select 'Interleaving';
    - under [bold] Audio skew correction [/bold] insert the delay to apply.

    Remember: you will have to determine the A/V delay of the DVD. Many applications can do that.
    - On Rejig, the audio stream is called, whan you demux it:
    AC3_Audio_0xBD_0x80_Delay_[bold]XYZ[/bold]ms.ac3
    - On DVD2AVI, whan you save a D2V file simultaneously demuxins an audio trace, that trace is called similarly:
    name AC3 T01 (channels)ch (bitrate)Kbps DELAY [bold]XYZ[/bold]ms.ac3
    where T01 = Trace 01 = 0x80
    - DVD Decrypter writed a file information about it when it ripped a DVD
    ....

     
    Last edited: Nov 22, 2006
  4. mike8333

    mike8333 Member

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    The Xvid movie was ripped/compressed from DVD using DVDFab/AutoGK combo.
    Movie Video/Audio was out of sync the moment the file was produced.
    By tearing it apart and using 2 instances of VLC....it sync! (funny)
     
  5. mike8333

    mike8333 Member

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    Thanks Bro,

    Your method is good only for constant delay problem.
    I corrected this kind of delay using Vdub1.6 using it's interleaving function.
     
  6. mike8333

    mike8333 Member

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    Actually...I had solved the problem.

    After reviewing the Xvid file, I found the back portion of it has a little angle problem (repeating scenes).

    Using ifoedit, I tried to remove all angles except "Angle 1", unfortunately it didn't work bcos (later found out) the program fail to identify the relevant vob-id correctly.

    By using VLC and PowerDVD in tandem, I reviewed all VOBs from the main movie, found that the last VOB(VTS_03_05) was the problem one.

    Found a nifty progam, VobEdit from the net, I "tore up" the VOB and produce some 700+ smaller VOBs, the program also produce a log file ID-ing all the VOBs.
    So I determine and deleted all VOBs related to ID21, renamed the remaining files in running order using another progam.

    Finally using VobEdit again, I join the multi-mini VOBs back into 1 single VOB and replacing the original.

    Then I re-AutoGK, all came out perfectly.

    Note: After using this method, DVDShrink will not be able to produce an ISO file citing missing VOB.
     

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