If you mean using real live action I suggest you use some ind of blue-screen program to cut out the actor from it's environment. If you know how to program in Delphi or C++ a bit you can even make one yourself it's not that hard (Or so I've been told). And in 2 weeks my new animation reaches it's deadline and a friend programs his own bluescreen program for use in that animation so maybe he can make it good enough to be used for other peoples projects too. like yours.

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