The Nikon D90 shoots 720p video to avi files. This weekend I shot about 40 videos at the Zoo and for some reason only 13 would import into iMovie. The rest would say that they were not compatible, even when I would try to import them one by one. All movies were shot on the same day with the same card and all play back fine in iPhoto and quicktime. Anyone ever run into an import issue like this with iMovie before?