Sound Sync Issues (I checked the FAQ)

Discussion in 'MPEG-1 and MPEG-2 encoding (AVI to DVD)' started by MusPuppis, Jun 4, 2005.

  1. MusPuppis

    MusPuppis Member

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    I apologize for posting this question when I beleive the FAQ takes care of the answer, but when I click the link pertianing to my problem all it does it take me to the main forum page over and over.. It wont display the actual post for me.

    Heres my problem -

    I have a movie in .AVI format I want to turn into a VCD so I can play it on my DVD player. Having no idea what I was doing, I found Afterdawn.com and its been EXTREMELY helpful. I've run into a problem though. I can get the AVI converted to an MPEG and get the MPEG on a CD and get it to play in my DVD player.. but a few minutes into the movie the sound loses sync. The video plays fine but the sound ends up a few seconds before or ahead of whats actually happening.

    The problem seems to be happening in the conversion process. I used Cucusoft AVI to VCD DVD MPEG Converter Pro to change the .AVI into a VCD compatable .mpeg file. The .AVI has no trouble with sound when watched on my computers. It plays fine with no hiccups, but once I convert it with Cucusoft, the mpegs sound loses sync.

    Am I doing something wrong in the conversion process? I'm really new to all this, as a matter of fact, I started tinkering for the first time a few hours ago.. So any advice would be greatly appreciated. I dont want anything fancy, I just want to convert the .AVI, split it into two parts (the whle movie is too large for just one 80min. CD-R) and put it on CD so I can watch it.

    Thanks guys, sorry to ask a stupid question.
     
  2. MusPuppis

    MusPuppis Member

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    Nevermind, I spent some time fiddeling around and it turns out the movie's audio is in a compressed format - which seems to mean it cant be uncompressed without losing sync with the video.

    Oh well.
     
  3. aldaco12

    aldaco12 Active member

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    No, it's not the case.

    If the movie's sound has been compressed in MP3 VBR it produces an un-sync movie when you try to convert AVI --> MPG (MPG is CBR and AVI has VBR sound), but if the sound is CBR compressed not.

    It's why you need to 'uncompress' the whole sound stream (using VirtualDubMod or VirtualDub) and to use that WAV file instead of the AVI's 'bad' MP3 sound (or to make a 'good AVI' by compressing CBR that WAV and inserting in to the AVI, using VirtualDubMod, as explained).
     

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