Step 1. Import videos to iMovie
Lauch iMovie, open your project or start a new project. Note: iMovie supported video formats are: DV, DV Widescreen, HDV 1080i (25 and 30 fps), HDV 720p (25 and 30 fps), MPEG 4 Simple Profile and iSight. And some models of camcorders are not supported. When you import movies to iMovie, make sure your videos are supported by iMovie. If not, you should get a Mac Video Converter to convert DVD and videos to iMovie.