Funny Framerate

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  • colep
    Junior Member
    Junior Member
    • Oct 2003
    • 4

    Funny Framerate

    When I rip DVDs the audio comes out at a funny speed.
    I rip with DVD Decrypter
    Append VOBs with vStripGUI
    Demux with VOBrator
    Convert AC3 to Wav with Winamp or Azid or Virtualdub+Mpeg2+AC3 ACM
    Reencode with Virtualdub+Mpeg2+AC3 ACM

    Regardless of how I decompress the audio, it seems to correspond with a framerate of 23.982-23.984 fps.
    This number is occasionally found by Virtualdub as the framerate at which the audio and video lengths are equal, but is always confirmed by getting the lip-synch right. This has happend on three different DVDs on different drives.
    My solution so far is to create Divx files at 23.983 fps. Alternately I can change the audio length in Goldwave.

    1. Does this happen to anyone else?
    2. Is there an exact way of calculating this number? (e.g. 23.976... = 24/1.001)
    3. Given that my monitor runs at 60Hz, will playback be any smoother at 24fps vs. 23.983 fps?
    4. Should I attempt to rip, append, and demux using vStripGUI?

    Thanks!
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