The iPhone’s Photos app lets you trim video length, adjust playback speed, edit Slo-mo clips, and apply Audio Mix effects entirely on device.
Learning how to edit the video on iPhone doesn’t require a third-party app — Apple’s built-in Photos app handles trimming, speed adjustments, and audio edits right from your camera roll. The workflow works on recent iPhone models and is documented directly by Apple. Here is exactly how to use it.
Editing Your iPhone Video: All the Built-in Options
The Photos app on iPhone covers the most common video edits: trimming the start or end, changing playback speed for high-frame-rate clips, adjusting Slo-mo boundaries, and applying Audio Mix to Spatial Audio recordings. Every edit is nondestructive if you use the right save option.
The table below shows what you can do and where to find each tool.
| Feature | How to Access | Notes |
|---|---|---|
| Trim Start/End | Open video > tap Edit > drag timeline handles | Only trims beginning and end; cannot remove a middle section |
| Adjust Playback Speed | Open video > tap Edit > tap Video > choose speed | Only available for videos recorded at a high frame rate |
| Edit Slo-mo Timing | Open Slo-mo video > tap Edit > drag black or white bars in the timeline | Sets where slow motion starts and ends |
| Apply Audio Mix | Open video > tap Edit > tap Audio Mix > select Standard, In-Frame, Studio, or Cinematic | Works only with Spatial Audio recordings |
| Save as New Clip | After edits, tap Done > tap Save Video as New Clip | Preserves the original video file |
| Preview Before Saving | Tap the play button during the edit screen | Prevents accidental over-trimming |
| Revert Edits | Open the edited video > tap Revert or Revert to Original | Restores the original file after saving |
Trimming the Start or End of a Video
To trim the start or end of a video in the Photos app, open the clip, tap Edit, then drag either end of the timeline handles to set new start and stop points. Apple’s official steps say you can tap the play button to preview the result before you commit. When you are satisfied, tap Done, then choose Save Video to replace the original or Save Video as New Clip to keep the original untouched.
Adjusting Playback Speed for High-Frame-Rate Footage
You can slow down or speed up compatible high-frame-rate videos directly in the Photos app. Open the video, tap Edit, then tap Video and choose a speed. Apple notes this option only appears for clips captured at a high frame rate. After selecting the speed, tap Done and save.
Editing Slo-mo Boundaries
For videos recorded in Slo-mo mode, the Photos app lets you adjust which portions play in slow motion. Open the Slo-mo video, tap Edit, then drag the vertical bars in the timeline to set the start and end of the slow-motion effect. Apple documents this exact workflow on its support pages for iPhone.
What Happens If You Save Over the Original?
Choosing Save Video replaces the original trimmed version permanently unless you use the Revert option later. Choosing Save Video as New Clip creates a second file and leaves the original untouched. Apple’s official guidance recommends the new-clip option when you are unsure about the edit, because it is the safest way to preserve your footage. You can always use Revert to restore the original if you saved over it.
Applying Audio Mix to Spatial Audio Videos
If your video was recorded with Spatial Audio, you can change the audio mix in the Photos app. Open the video, tap Edit, then tap Audio Mix and choose Standard, In-Frame, Studio, or Cinematic. Apple says the intensity slider adjusts how much background noise the effect captures. This feature is only available when the video includes Spatial Audio.
Apple’s official video editing guide for iPhone covers these steps in full and applies to recent models running current iOS versions.
Can You Remove a Middle Section in Photos?
No. Apple’s Photos app only trims the start or end of a video. It does not include a tool to cut out a middle section. For that, you need iMovie or another timeline-based editor. This is the most common misunderstanding about the built-in editor, and Apple’s own documentation does not list middle cuts as a feature.
Avoiding Common Mistakes
New users often overlook a few key details when editing video on an iPhone. The table below covers the most frequent errors and how to steer clear of them.
| Common Mistake | Why It Matters | How to Avoid |
|---|---|---|
| Expecting middle cuts in Photos | Photos only trims start/end; middle removal needs another app | Plan your edit or use iMovie for more than basic trimming |
| Choosing the wrong save option | Save Video replaces the original; Save Video as New Clip preserves it | Choose Save Video as New Clip when you are unsure |
| Skipping the preview | May result in over-trimming or losing important content | Always tap the play button during the edit screen before tapping Done |
| Assuming all videos support speed changes | Speed adjustment only appears for high-frame-rate recordings | Check the Video tab in Edit — if it is absent, the clip does not support speed changes |
| Overlooking the Revert option | Edited videos can be restored to the original at any time | Reopen the clip and tap Revert or Revert to Original |
Editing iPhone Video: The Step Order That Works
- Open the Photos app and find the video.
- Tap Edit in the top-right corner.
- Use the timeline handles to trim the start or end if needed.
- Tap Video to adjust playback speed, or Audio Mix if the clip has Spatial Audio.
- For Slo-mo clips, drag the vertical bars to set the slow-motion boundaries.
- Tap the play button to preview your changes.
- When satisfied, tap Done.
- Choose Save Video as New Clip to keep the original, or Save Video to replace it.
- If you need to restore the original later, open the clip and tap Revert to Original.
References & Sources
- Apple. “Trim video length, adjust speed, and edit audio on iPhone.” Official Apple Support guide covering all built-in video editing steps for iPhone.