iOS · iPhone & iPad
Speed Up or Slow Down Video in iMovie on iPhone or iPad
Source-checked About 10 minutes
Answer
Select a timeline clip, open Speed, drag the control toward the tortoise or hare, and preview the audio and clip duration before export.
Select the clip
Open a movie project and tap the video clip in the timeline so its inspector appears.
Open Speed
Tap the Speed button and drag toward the tortoise to slow down or the hare to speed up.
Review clip ranges and audio
Add speed ranges when only part should change and decide whether pitch preservation produces acceptable audio.
Preview and export a test
Watch transitions and motion around the speed change and export a short test before replacing any original.
Video walkthrough
If it does not work
- If the issue continues, record the exact error and compare it with the linked Apple Support guidance before resetting, reinstalling, changing permissions, or deleting data.
Sources and verification
Checked against official documentation on . Scope: iPhone & iPad.
Follow the linked first-party guidance if labels differ after a platform or app update.