I have done a lot of this type of processing with a shader. Just pick the color in the desired range and set the alpha of a pixel in that range to 0. After that just lay the video on top of each other.
On Mon, Apr 20, 2009 at 3:34 PM, Hans-Christoph Steiner hans@at.or.atwrote:
I was wondering whether it is possible convert a specific color, like green-screen chroma key, to alpha information using Gem. They idea is to overlap many green-screen videos. I can see the pieces, but I can't see the whole.
.hc
Man has survived hitherto because he was too ignorant to know how to realize his wishes. Now that he can realize them, he must either change them, or perish. -William Carlos Williams
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list