This article uses a clip from Santa Claus Conquers the Martians, a low-budget science fiction film from the early 1960s. It explains how to create a trailer for a movie you made with iMovie 10 or iMovie 11.

If you have already imported the movie you want to use for your trailer, select it from the library. If you have not done so, follow these steps:

Import the media file you want to use in your trailer:

Browse to your media file and then select Import Selection.