How To Trim a Clip Under A Transition In Final Cut Pro

The transition includes icons that make it easy to trim the left or right clip without affecting the transition.
1. Select a transition in the Final Cut Pro timeline.
2. Drag one of the trim icons in the upper-left or upper-right area of the transition.

[@techtipsuk]

Thanks. This is just moving the transition. It’s trimming one clip at the expense of your other clip. If you hover your mouse over the top right corner this lets you trim the clip as if the transition wasn’t there.