Superimposing "talking head" on a backdrop

Discussion in 'Amateur Video Production' started by haroldact, Jul 6, 2005.

  1. haroldact

    haroldact Guest

    I would like to record a person talking in front of a green screen and
    then superimpose this onto a backdrop (image file) using Vegas Video
    5.0 Can somebody tell me if this can be done? Also, regarding green
    screens, do I have to buy expensive screens or can I make my own using
    green paper or cloth? THANKS.

    haroldact, Jul 6, 2005
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  2. haroldact

    PTravel Guest

    I use Premiere, not Vegas, but I'd be surprised if Vegas can't do this. You
    need to use a filter/effect called, variously, chroma key or color key. If
    Vegas has color key capability, you can select any color to be keyed out.
    In that case, you can use any plain color background. Green works best for
    DV-25 (output of miniDV and D8 camcorders). The closer to "primary" green,
    the better, but even a green bedsheet should work fine. If this isn't
    precise work, blue will work as well. Just make sure that the background is
    evenly-lit, and there is no color spill on the subject.
    PTravel, Jul 6, 2005
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  3. haroldact

    Jona Vark Guest

    and stretch it so the wrinkles and seams are out. Best bet is a vibrant
    GREEN or blue. Although I haven't used a bedsheet yet. Did use a tarp once
    though. ;P
    Jona Vark, Jul 6, 2005
  4. haroldact

    GeekBoy Guest

    You can buy neon green colored posterboard at Wal*Mart. ~69 cents each
    Cheaper than buying paint maybe, depending on the size of the area you want.
    GeekBoy, Jul 6, 2005
  5. haroldact

    Poet Fury Guest

    Yes, vegas has a chromkey plugin.

    And any nasty green cloth will do. Preferably not a shiny one (too hard to
    light evenly). Just go to a fabric store and pick a color that you wouldn't
    wear on a dare.

    Or blue, for that matter.

    Actually, just about *any* color that doesn't appear in the thing you want
    to "float" will do.

    Anyway, that's what life is, just one learning
    experience after another, and when you're through
    with all the learning experiences you graduate and
    what you get for a diploma is, you die.
    Poet Fury, Jul 6, 2005
  6. haroldact

    Mike Kujbida Guest

    Mike Kujbida, Jul 6, 2005
  7. haroldact

    RS Guest

    Yes, Vegas Video can do it. In fact, the Chromakey filter in Vegas is
    pretty decent.

    You can do it yourself using paper or cloth as a poor mans screen. It
    dosen't 'have' to be green. It needs to be a color that is not present
    on your subject, or even close. It needs to be well lit and uniformly
    lit. Uniform is the key as the chromakey will make transparant all
    pixals that meet a specific color range, so you will want to make sure
    there are no shadowed areas.
    RS, Jul 6, 2005
  8. haroldact

    PTravel Guest

    Agree about the "nasty" cloth. ;)

    One point, though: for DV-25 spec, e.g. miniDV and Digital 8, green will
    work better than blue. It's just one of the quirks of the spec with respect
    to how it encodes colors.
    PTravel, Jul 6, 2005
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