iMovie white screen

[christinam]

I've never had a problem with iMovieHD until recently when I tried to record with iSight and the screen was white. I tried restarting my computer, and starting a new iMovie project but it's still white. I tried using photobooth to see if something was wrong with iSight, and the photobooth screen was green. I can use my isight on Stickam.com (a webcam chatting website) But it wont work for any applications on my macbook.