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some question about videoplane?


kdcl
May 30, 2010 | 3:38 pm

this is my patch , i want to remove one movie’s background….

i don’t know how to do ?

anyone can help? thx

– Pasted Max Patch, click to expand. –

efe
May 30, 2010 | 5:20 pm

You mean something like chromakeying? jitter tutorial 10
Otherwise you can take a look into the shaders on:
/Max5/Cycling ’74/jitter-shaders/composite in particular co.chromakey.jxs and co.difference.jxs


kdcl
May 30, 2010 | 6:20 pm

thx , i don’t know how to use .jxs ,could you tell me which can find help?

thx a lot


efe
May 30, 2010 | 6:37 pm

jxs are wrappers for shaders. A shader is a small program used to create your own visual effects:

http://en.wikipedia.org/wiki/Shader

as always the jitter tutorials are the best reference: take a look into the numbers 41 and 42.

You can read this super nice article in writing shaders inside jitter:

http://cycling74.com/2007/05/23/your-first-shader/

Emmanuel


efe
May 30, 2010 | 6:45 pm

herewith a super simple example. You can do a chain of effects in-between the jit.gl.texture and the jit.gl.videoplane

– Pasted Max Patch, click to expand. –
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