We're using iMovie HD on MBP with OSX 10.6.8 to edit HD footage. The project was started on another computer using the same version of iMovie (5.0.2). On the new computer, all clips show up as black, but the audio works. The footage is full HD in .mov format at 29.97fps. The clips play fine in Quicktime, but the video doesn't show up in iMovie!

We tried importing a new .mov into the project, and the same thing happened - we hear audio but the picture is black. This clip also plays fine in QT.

Is there a codec or driver that needs to be installed to get the video working? Has anyone else encountered this issue?

Any help will be greatly appreciated! Thanks in advance!