CGTalk - Achieve a Blue Screen effect??

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Theta-Dot

01-05-2003, 09:39 PM

I have never really dabbled into compositing 2D and 3D elements before, but I want to give it a shot. I tried to use camera tracking once, and it turned out ok, but there were way to many twitchy movements... anyway. I want to do something like a blue screen thing, and I'm not sure at all whether I even can with just max alone. There isn't a simple plugin that replaces pixels of each frame with a certain range of color with something else? Perhaps it is more complicated then that, but that's how I understood how the process basically worked. I thought I heard you could do it in combustion, but I only have the demo Discreet sent me, and I really don't want a big red X in everything I do. If there isn't a way for me to do anything, then I won't be disappointed, I didn't think there was anyway. But just maybe...

=ThetaDot=

snot_nose

01-05-2003, 10:06 PM

I haven't really understand what you want to do but
you can render also with an alpha channel in the render elements wich is even better then blue screen.
if you use it in your render you get file of the scene that you render plus the alpha file that contains the opacity values.

Theta-Dot

01-05-2003, 10:21 PM

sorry if it was unclear. I really wanted to record live action and then replace anything blue/green/whatever with a computer generated element. Like the weather man.

=ThetaDot=

snot_nose

01-05-2003, 10:59 PM

i think that for this a video editing tool will fit.
build your elements in max and use a video edit program like premiere to put the elements together with the live action

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