Xvid + AC3 - interleaving problem ?

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  • stavush
    Junior Member
    Junior Member
    • Mar 2003
    • 5

    Xvid + AC3 - interleaving problem ?

    Hi all,

    My ripping process:

    The film: NTSC, Interlaced, 29.97 fps , 4:3
    Audio: 5.1 , 448kbps , delay -66 ms

    I used GordianKnot for processing, chose deinterlace, compressed with XviD

    And now we get to the hard part:
    I tried muxing the ac3 audio with many interleaving options (preload + interleave ) but the result is the same: in playback, the sound changes ( from normal to quieter than back to normal ).
    Is this called an audio dropout ?

    What is this phenomenon , what causes it ? As I read in many threads, the main result for bad interleaving is desynchronization.

    btw, the dvd is : Guns n Roses, show from Tokio, the dvd itself is produced in Brasil

    I appreciate your help!

    Peace
  • UncasMS
    Super Moderator
    • Nov 2001
    • 9047

    #2
    changing loudness is NOT a mater of interleaving.

    your ac3 file is the reason.

    try to convert this file to mp3 or ogg vorbis and NORMALIZE it.

    Comment

    • stavush
      Junior Member
      Junior Member
      • Mar 2003
      • 5

      #3
      I have checked my ac3 file seperately, and it sounds fine. Only after the muxing I get the loudness change effect.

      Anyway, I'll try normalizing, and I'll update you.

      Thanks

      Comment

      • stavush
        Junior Member
        Junior Member
        • Mar 2003
        • 5

        #4
        I converted my ac3 to 5.1 ogg using headac3ache and muxed it with oggmux.

        Now I get some other effect: When playing the ogm with BSplayer I get sound + video scratches/lags and every 2-3 secs.

        With WMP 6.4 the ogm plays fine.

        1. What can be the problem? Using latest ogg DS filter .
        Maybe the xvid codec causes this ?

        2. Is there a way normalizing the original ac3 without converting it to ogg ?

        Comment

        • stavush
          Junior Member
          Junior Member
          • Mar 2003
          • 5

          #5
          UPDATE!

          The muxing caused the problem, seems Nandub is not so good with muxing avi and ac3.

          I've used AviMux with its default interleaving settings and now it sounds great!

          Comment

          • UncasMS
            Super Moderator
            • Nov 2001
            • 9047

            #6
            virtualdubMOD is very good as well

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