I dragged all of my mp4 videos to a new project in iMovie and all of the sudden when I move the cursor to one of the slide it doesn't change scene anymore. It freezes but the audio is still playing just fine. I'm using go pro to record all of my mp4s. What should I do? I have 70 videos that need to be editted for the next couple days!
Pro, OS X Mountain Lion (10.8.3), email to email@example.com