How you speed up a video depends on the type of clip. Photos can adjust the slow-motion portion of a Slo-mo recording, while an editing app such as iMovie is more appropriate when you want flexible speed control for an ordinary video.
Make a Slo-Mo Video Play Faster
- Open Photos.
- Select the Slo-mo video.
- Tap Edit.
- Adjust the slow-motion timing markers so less of the clip plays slowly.
- Preview the video.
- Tap Done.
Speed Up a Regular Video
- Open a video-editing app that supports speed adjustment.
- Create or open a project.
- Add the video clip.
- Select the clip and open its speed controls.
- Increase the playback speed.
- Preview the result and export the finished video.
Audio Changes Too
Speeding up a clip can change the timing and character of its audio. Depending on the editor and your goal, muting the original sound and adding music or narration may produce a cleaner result.
Do Not Confuse Playback With Export
Some apps can temporarily play video faster without creating a new faster file. Export the edited project if you need a version that remains sped up when shared elsewhere.
Export a Test Before Editing a Long Project
Speed changes can affect smoothness, audio, and final file size. Before spending time on a long edit, export a short sample and watch it outside the editing app. This confirms that the chosen speed and quality settings survive the export the way you expect.
Very Fast Playback Can Hurt Readability
If the video contains text, demonstrations, or dialogue, extreme speed increases can make the result hard to follow. Preview at normal viewing size before exporting.