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Topic: Green Screen Help/Questions

Hello everyone. I now have the capabilities to do green screening but I thought I'd ask for some pointers when doing it. I did some initial tests that weren't so great because the green screen was reflected on the minifigures I used. I have Adobe After Effects CS6 and I'm using a giant piece of neon green poster board. How can I avoid getting that green reflection and get more flawless looking keying? Obviously the following test that I am about to show would have ended up very differently if she had have been inside a building and I was green screening just a window. In a situation like that, it should work fine. But what if I were to try something more like these tests? Here is one of my first attempts:

https://lh5.googleusercontent.com/-D1TQrLBF6hk/UFvEAX_4yEI/AAAAAAAAIJc/VhT-MYoqA1c/s912/Greenscreen%2520Test%2520After.jpg

https://lh4.googleusercontent.com/-1YN6jxxt7Xw/UFvECH24CSI/AAAAAAAAIJk/fjYtZYLsAAg/s912/Greenscreen%2520Test%2520Before.jpg

Last edited by Repelling Spider (September 20, 2012 (06:48pm))

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Re: Green Screen Help/Questions

First of all I'd like to say that besides the reflection, this green screen effect looks GREAT! I could only dream of obtaining an effect that crisp, that is amazing.
The only actual advice I have is to move the poster-board farther back so it does not reflect on to the lady. Also the neon colors are naturally so bright that they hurt your eyes, so it may help if you use a green color more like this: http://www.rosebrand.com/images/product_320x320/118-Commando-Chroma-Key-Green-FR.jpg

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Re: Green Screen Help/Questions

Also, try to keep your set and minifigures so far away as possible, from the greenscreen during filming so that they don't reflect the green. I always used a bluescreen, this, because blue is further away from the yellow (a minifig's skincolor) than green.

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Re: Green Screen Help/Questions

Huh, we just started a green screen project in video class (at school) today.

I've heard that to get rid of the green spill on the subject, put some blue paper above the green screen (angled down, like a celing).

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Re: Green Screen Help/Questions

I once filmed myself on a MAGENTA screen.... because that's the only color I had large enough to film myself against.  weird.

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Re: Green Screen Help/Questions

In some cases you will need to use a mask and rotoscope the parts of the character that are transparent. Painstaking work, but it's worth the effort mini/smile  (I had to do it many times in my Indiana Jones movie, especially around his Fedora)

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Re: Green Screen Help/Questions

Repelling Spider Download this program for free

http://cinegobs.com/software/cinegobs-keyer

Then use it to green screen because of its setting called "Spill" which will change that green color and help remove it.

you can use this tutorial to find out how https://www.youtube.com/watch?v=-oKD-r2BoEg

And this video may help you too http://www.youtube.com/watch?v=q3PZO_lC … ature=plcp

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Re: Green Screen Help/Questions

This thread can be closed. I discovered that I needed to use the Keylight plug-in in After Effects and now I can do great green screening that controls the spill wonderfully.

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Re: Green Screen Help/Questions

Repelling Spider wrote:

This thread can be closed. I discovered that I needed to use the Keylight plug-in in After Effects and now I can do great green screening that controls the spill wonderfully.

Another thing you can do in AE is use many keying plugins at once to remove your greenscreen.  I use "Color Key" for most of the keying, "Keylight" for whatever Color Key can't kill and for some color spill correction, and I use "Change Color To" for most spill correction.