How to reduce size of big AVI files, with little reduction in quality.

Discussion in 'Amateur Video Production' started by PGPS, Jun 23, 2007.

  1. PGPS

    PGPS Guest

    Hi,
    I downloaded camcorder videos as DV-AVI files and each hour takes
    about 13GB. What I would like to do is convert these to some format
    which does the following:

    1. Reduce the size (some sort of compression, divx?)
    2. Be able to re-create atleast MPEG-2 quality DVDs without any jerks
    in the video.

    Right now, when I try to get the files from DVDs and re-edit it, I see
    that I don't get a smooth picture. I want to keep the original AVI
    files, but running out of space.

    Any other solution would also do good.

    Thanks.
     
    PGPS, Jun 23, 2007
    #1
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  2. PGPS

    Mike Kujbida Guest


    Buy another hard drive or two and external cases (USB or firewire work
    equally well here) to mount them in.
    The cost keeps going down all the time so this is a very inexpensive option.

    Mike
     
    Mike Kujbida, Jun 23, 2007
    #2
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  3. "PGPS" wrote ...
    Video DVDs achieve their remarkable reduction in data size by
    using temporal compression, in addition to spatial compression.
    DV uses only spatial compression, but preserves every frame.
    Video DVDs use temporal compression where they only store
    every 8th (etc.) frame and then only store the difference between
    frames in-between. Because the in-between frames must be
    recreated to allow editing, special effects, etc. you will likely see
    additional artifacts that would not be visible from the original DV
    data.

    Some editing applications are getting better at editing consumer
    MPEG video. Review the Google archives of this newsgroup in the
    last 6-12 months for discussion of MPEG editing.

    Why not just leave the camcorder video on the original tapes?
    If the content isn't worth the ~$5/hour cost of tape, is it even
    worth saving at all?
     
    Richard Crowley, Jun 23, 2007
    #3
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