'Green Screen' Special Effects with iSight & iMovie?

I need to record a short (30 - second) movie of just me talking. I thought I would record it with my iSight camera & Quicktime.
If I use a green screen. . .can I swap in a different background in iMovie? If I can, does anyone have a good idea for a home-made green screen? (thought maybe I would just go to the art store and get a piece of green posterboard unless anyone has a better idea)
TIA,
Larry

Hello Larry,
"Green screen" recording is a function that is built into my Sony camcorders. Sony calls it "superimposing." Because it is easy to use the built-in function, I use my camcorders for all my superimposed video work.
You can read about how it works on a Sony camcorder in pages 118 through 120 of this Operating Instructions manual. If you have a camcorder, yours may have the function, too, although it might have a different name if your camcorder is not a Sony.
I do not know how to do with in QuickTime Pro. If you get no better answer here and cannot find the answers in the QT Pro Tutorial or Help pages, try searching or posting this question in the QuickTime for Mac OS Forum.
Jim

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Welcome to Discussions, whoismarktaylor
Until you get better suggestions:
whoismarktaylor wrote:
Can anybody direct me to a tutorial on exactly how to place a greenscreen background into the isight capture.
(1) Position "greenscreen" (something like this: http://tinyurl.com/29w2lp4 )
(2) Position subject in front of "greenscreen"
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I am using imovie 09 to create a video however i captured the isight footage using screenflow. ...
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http://docs.info.apple.com/article.html?path=iMovie/9.0/en/mov39f84285.html
http://docs.info.apple.com/article.html?path=iMovie/9.0/en/mov3a622974.html
Mac Pro Quad Core (Early 2009) 2.93Ghz Mac OS X (10.6.5); MacBook Pro (13 inch, Mid 2009) 2.26GHz (10.6.5)
LED Cinema Display; G4 PowerBook 1.67GHz (10.4.11); iBookSE 366MHz (10.3.9); External iSight; iPod4touch4.2.1

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