How to keep green screen effect in one place while moving camera?

Hello all. I have been trying to use a green screen while moving the camera in Final Cut Pro X however I am running into a problem. Basically when I move the Camera all of the effects on the green screen move with a camera. Is there a way to make them stay in one place as the camera moves from side to side? The following video shows what I am talking about more clearly.
http://www.youtube.com/watch?v=CsER-fx5UgQ
Thanks!

Karsten Schlüter wrote:
sure ...
you track, e.g. the corner of your monitor; then apply the motion-path to the second source; apply keying (color, luma, whatever) - done.
in my 2nd example, I had to track the shaky hand-camera, the second track is no green-screen, but a manual masked freeze .. but basicly ...
Okay thank you! I think im just going to buy Motion 5 then

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How to keep green screen effect in one place while moving camera?

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