iMovie
Force Touch trackpad gestures in iMovie on Mac
If you have a Force Touch trackpad, you can access additional functions in iMovie by changing how hard you press. The trackpad also gives you feedback (you feel a subtle vibration) when you:
Drag the crop rectangle and it snaps to an alignment guide when cropping
Drag past the end or beginning of a clip in the timeline
Drag a title on top of a clip in the timeline