If you can build from CVS, I just updated (rewrote entirely) a Channel keying node. It might be on graphical/blender builds in their next build It is an upgrade to the Luma key, except you can pick your color space and which channel to work with. I’ve been using it pull some pretty good mattes from some pretty bad green screen footage. If you can get it (I’m traveling and can’t post build), I would love some feedback.
Cheers,
Bob