extract video from dvd, make frame accurate edits

Discussion in 'Amateur Video Production' started by Ralph Snart, Nov 28, 2003.

  1. Ralph Snart

    Ralph Snart Guest

    say i extract a clip from a dvd and i want to make some
    frame-accurate edits. what format would i be best off converting
    the dvd video into? avi? leave it as mpeg-2?

    and then when i want to reassemble it, is there any way i can
    avoid a re-encode? i know virtualdub can do "Direct Stream Copy"
    but i'm not sure it will work on mpeg-2.

    -rs-
     
    Ralph Snart, Nov 28, 2003
    #1
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  2. Ralph Snart

    Bariloche Guest

    Bariloche, Nov 28, 2003
    #2
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  3. Ralph Snart

    Samuel Paik Guest

    Leaving the video in MPEG-2 should be the highest quality
    route, but conversion to AVI may give you more software
    options.
    Depends on the software, but for any edits on non-GOP boundaries,
    some reencoding will be required.
    VirtualDub doesn't handle MPEG-2. There is a hacked version
    which does, but I've never used it so have no idea how it
    handles MPEG-2. The official version of VirtualDub does
    support MPEG-1, and it does it by always decoding--output
    is always AVI.

    Sam
     
    Samuel Paik, Nov 29, 2003
    #3
  4. Ralph Snart

    Bariloche Guest

    Yeah, that's the problem. Even if you can get it to manage Mpeg2 (a
    way to get that could be, for instance, to load the mpeg clip through
    an Avisynth script), what you get out is an Avi So if you want an mpeg
    back, you would have to reencode the output Avi.

    Whereas an mpeg editing software would reencode only the (usually)
    small amount of frames between the cut and the next GOP-boundary (I
    frame).
     
    Bariloche, Nov 29, 2003
    #4
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