One very obvious way is to have the sprites move against a "green (or blue/ white/ whatever) screen" background and then capture the result with a screen video capture program. Two that have been mentioned previously in these forums are Camtasia and Bulent's Screen Recorder - another (freeware) program that I've just found is AviScreen Classic ( http://www.bobyte.com/ ).
Going the other way, you can have your actor/musician perform in front of a solid color background and then add a background generated from Scratch. Looks like a lot of potential here with the variety of effects available - but I've just started experimenting.
Last edited by DrJim (2007-06-21 12:55:21)
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