View Full Version : GreenScreen Trouble

03 March 2005, 04:50 PM
Hi all! I'm relatively new in After Effects, and this is the first time I work with GreenScreen...Now, I have a problem... (
When I assign ChromaKey, AE leave a little line of green on the border of the person that I must to isolate...
You Can see it here: (
Now, when I make value(tolerance or thin) more high AE leave me the green and delete other colors in the picture, like brown in the jacket, or the pink of the face...
Like here: (
That's a great problem 4 me, because I must to know if I Can make a scene with a matte painting... I don't think that this greenscreen is bad...IS so difficult to make good greenscreen?
Can anyone solve my problem?
Thank u all!

03 March 2005, 06:40 PM
With the green line, you have light from the green screen 'spilling' onto your actor.
This is a common green screen problem (it can be avoided though by lighting your screen and actor seperatley, and placing them far enough apart)

If your version of AE has it, use the Spill Supressor, this should remove the green tinge.
If it doen't you'll have to play around with the Hue/Saturation to remove it.

It's also a good idea to play around with the matte and simple choker, if your version has it, to tighten up your key.

03 March 2005, 07:59 AM
Thanks man! I have the last version of AE, so it have all, and I try the spill suppressor...
Just I have this problem: I never understand why if I have green color selected, when I work on the tolerance or thin value it delete other colors, like brown or pink, when the greens remain...
Still thank u!

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03 March 2005, 07:59 AM
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