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544Final Cut Pro User Guide
Constant speed changes usually alter the duration of a clip. By default, if a constant speed
change causes the duration of a clip to become longer or shorter, all clips coming after
it ripple forward or backward. If you change the speed to 50 percent, your clip becomes
twice as long, and subsequent clips are moved to the right; if you change the speed to
200 percent, the clip becomes half as long, and subsequent clips ripple left. For example,
if you set a 5-second clip to play back at 50 percent speed, Final Cut Pro adds frames
to the clip so that the clip becomes 10 seconds long and plays back more slowly. If you
increase the clip’s speed to 200 percent, Final Cut Pro removes frames and the clip plays
back in only 2.5 seconds.
1. In the Final Cut Pro timeline, select a range, a whole clip, or a group of clips whose
speed you want to change.
2. Do one of the following:
• Apply a preset speed setting: Click the Retime pop-up menu below the viewer and
choose Slow or Fast, then choose a speed from the submenu.