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Thread: How do you add a shadow when filming with a green screen??

  1. #1

    Default How do you add a shadow when filming with a green screen??

    I want to recreate this scene


    using a green screen because I'm going to play all the parts myself.. but how can I add shadows like the "ghosts" have??

  2. #2

    Default

    After you key out the green screen duplicate the foreground layer, fill the backmost duplicate one with black, lower it's transparency then make adjustments to it, scale, skew, position rotation etc. etc. until it fits in your scene in relation to the light source.

    Depending on your background it can be quite an advanced compositing technique.

    If the background is a bit complex, in the ideal world you want to recreate the scene as a 3d object, then map the video onto the object and project the shadow (as created above) on to there. As an alternative, one of the best plug-ins available for after effects can blag this really convinciningly...

    Composite Suite Pro

    It allows you to fake lights/gobo's onto video. With some creative use it can be applied to a background and a forground layer, with a silhuette video (prepared as described above) as the gobo.

    It can be quite simple if well thought out, but your talking reasonably advanced compositing and it's stuff that takes a lot of learning.

    David.
    Last edited by david walsh; 04-21-2011 at 03:54 PM.

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