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Old 07-09-2007   #1
Jake14
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Join Date: Jul 2007
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Default Greenscreen and Bluescreen

Hi everybody, I am very new to this website and I've been using Maya for a couple months now and created some cool things but nothing too spectacular. Now I want to make a short film thats set on a distant world. I know how to make my sets (thanks to the Digital sets DVD) but how can I key out the green screen from my footage in Maya? I don't know how to do that, can someone help me?
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Old 07-09-2007   #2
preciousSTONE
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I haven't had much experience in Maya, I use 3ds, but for green/blue screen I should think you would use other software (aftereffects and the like).
What exactly are you needing to key out and why do this is Maya?
If you render to a png image sequence (or another format that saves transparency) you can save the alpha of the rendered image.

Should you need to green/blue screen this for final output, apply a material to your objects with self illumination bumped up so you get a flat surface with no shadows or highlights (I'm not sure how to do this in maya, but it should be relatively easy) and then take your rendered image sequence into a program such as aftereffects and key out the green or blue. It's a simple filter and not difficult to use.

If you don't have aftereffects, there are a myriad of other programs that key out colour, so maybe have a look around on the net. There's bound to be freeware or demo software that can do basic keying. But if you're planning to create a short film, you'll probably need some kind of editing software, and aftereffects is as good as any.

I'm not sure I've covered exactly what you were asking, but I've tried to answer as best I could. If you have any specific questions, I'll be sure to look back and see if I can help.

Cheers.
Lisa
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Last edited by preciousSTONE; 07-09-2007 at 06:36 AM.
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Old 07-10-2007   #3
Jake14
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Ok, thank you. I do have Adobe After Effects, I was just wondering if I could key out greenscreens in Maya. I two people fighting on greenscreen for my film. Now I want to take out the greenscreena dn put them in a CG enviornment I made in Maya.
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Old 07-10-2007   #4
preciousSTONE
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Why would you not composite this in aftereffects then?
Render out your environment and characters separately, then combine them in aftereffects for final output.
Always worked for me.

Cheers,
Lisa
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[B]Lisa Axiotis[/B]
Digital : Traditional : Artist : Designer
[URL="http://lisa.axiotis.com.au/"]http://lisa.axiotis.com.au/[/URL]
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