I'm trying to create a posterize effect patch for video (using GEM). I found one in the PixelTango object [pt.layerfx] but I can't seem to figure out how to access the GEM subpatch that powers it. Can anybody tell me how to access the posterize subpatch in [pt.layerfx]?

Alternately, can anybody give me advice on how to create a posterize patch from the ground up? Basically I'm trying to reduce the number of colors in the video image. I don't even know where to begin so anything will help.

Thanks!

Alright, found an object that really helps. Here's a quick patch I threw together using [pix_colorreduce]. Now I'm trying to figure out how best to change the colors. Using just results in a flat tint, so unless I use multiple streams of the same video, posterize them and modify their brightness and then tint them and recombine, I don't think that [color] is going to be of much help. We shall see.
Does anyone know what [pix_colormatrix] does? I've checked out the help page on it, and I understand that you input a 3x3 matrix (4x4 if you include alpha i think) but why 3x3 rather than a simple RGB? I'll do some trial and error to try and figure it out, but any help is appreciated.
[url]http://www.pdpatchrepo.info/hurleur/posterize_video.pd[/url][/color]

In my search today I have found three objects that are directly relevant to posterizing video or images: [pix_colorreduce] [pix_duotone] [pix_posterize] - who would've thought, right? Anyway, when I get some more finished patches together I'll put throw them up on this thread. Advice is, of course, still welcome.