To expand a clip in iMovie, you have to drag the outer edge of the clip until it extends beyond its original length. This is great for adding effects to your video without having to create a separate event.
The first thing you will want to do is select the clip that you want to expand and then press Command + D. This will duplicate that clip and place it on top of the original.
Next, press Option + Command + D to move the duplicated clip into position above the original one. If the two clips are not aligned properly, simply click on one of them and use the arrow keys on your keyboard to move it into alignment with the other one.
Once they are aligned properly, press Return on your keyboard or double-click with your mouse on either of them so they both become highlighted blue (this means they are selected). Now all you have to do is drag either end of one or both of these clips until they extend beyond their original length (as shown in Figure 1 below).
Last modified: September 25, 2022