iMovie Won't Import MP4 Files
For some reason iMovie '11 won't let me import videos. Specifically, I'm trying to add MP4 files that I copied to my hard drive from my GoPro HD 960. For GoPro users, I used the R2 (720p) format. They open properly in QuickTime and VLC but can't be imported into iMovie (or iPhoto). When I select File-->Import-->Movies and browse to the directory where I saved all the .mp4 files on my hard drive, they're all greyed out. And actually, it seems that just about no video files at all on my computer can be added (all greyed out)--even other MP4 files.
I downloaded MPEG Streamclip but that says "unrecognized file format" when I try opening the videos. I also installed Perian and rebooted.
In case it helps:
- I have an Intel MacBook running OS X 10.6.8 with iLife '11
- QuickTime info for the video format says "H.264, 1280 x 720, Millions; AAC, 2 channels, 48000 Hz"
- VLC says "Stream 0 (Video) - Codec: avc1" and "Stream 1 (Audio) - Codec: mp4a"
Any ideas? This is incredibly frustrating!