troblems with audio delay

Discussion in 'MPEG-1 and MPEG-2 encoding (AVI to DVD)' started by tirofijo, May 24, 2005.

  1. tirofijo

    tirofijo Member

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    having problems encoding avi to dvd....its an avi with ac3 sound. extracted the sound using virtualdub. use tmpegenc wizard. get m2v. use tmpegenc dvd author and when its all done, the sound is behind about 3 seconds. have tried adding a delay with dvdlab but i have had no luck....any help will be greatly appreciated.

    thanks
     
  2. -LoNeR-

    -LoNeR- Active member

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    how u encodin the video?

    why u extractin audio first?

    why u using tmpeg writer?
     
  3. tirofijo

    tirofijo Member

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    going from avi to dvd. i am extracting audio with virtualdub first. save file as xxx.ac3. using tmpegenc to make m2v file (ntsc)..authoring dvd with tmpegenc dvd author....no luck yet...the avi is pal with ac3 sound.

    thanks
     
  4. aldaco12

    aldaco12 Active member

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    Alas, in the DVDs the audio stream often has a constant delay with respect to the video. In the ripping .TXT info file you usually see something like:

    - AC3 5.1 ch-english, delay = 386 ms

    Usually you can fix this in the authoring application, telling it that 'the sound has a delay of 386 ms'.
    Otherwise, if your authoring app doesn't allow you to do that, you'll need to convert those streams with a proper application (HeadAC3he or BeSweet allow you to set a constant 'delay' between the input end the output file) which allows you to delay your stream to set A/V to zero.
    But I'm sure that a correct 'authoring' application allows you to have A/V in sync in a VOB video (or an ISO image containing that) using unsync Audio and Video streams. For example, ReJig allows that.
     
    Last edited: May 24, 2005
  5. -LoNeR-

    -LoNeR- Active member

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    i understood three quarters of that, lol

    my suggestion? just encode the file without extractin audio, if u have your computer set up right and stuff - it will be fine
     

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