Apple iMovie offers a selection of 13 transitions from which to choose. That may not sound like a big number, but I think you’ll find that iMovie’s 13 transitions cover the styles you’re most likely to use anyway. To view the transitions that are available in iMovie, click the Trans button above the Timeline.
As you look at the list of transitions, most of the names probably look pretty foreign to you. Names like “Circle Closing,” “Radial,” and “Warp Out” are descriptive, but really the only way to know how each transition will look is to preview it. To do so, click the name of a transition in the list. A small preview of the transition briefly appears in the transition preview window. Oops! You missed it. Click the transition’s name again. Wow, it sure flashes by quickly, doesn’t it? If you’d like to see a larger preview, click the Preview button. A full-size preview appears in iMovie’s main viewer screen. If your transition preview window shows nothing but a black screen when you click a transition, move the mouse pointer down and click a clip in the timeline or storyboard to select it. The selected clip should now appear when you preview a transition.
