How to trim a video on iPhone
To trim a video on iPhone, open Lessr, add your clip, and set the start and end of the part you want to keep. Lessr saves the trimmed clip on your device, with no uploads and no account.
How to trim a video
- Open Lessr and choose Trim Video.
- Add an MP4 or MOV video.
- Set the start and end of the part you want to keep.
- Pick Lossless or Precise, and mute the audio if you like.
- Tap Trim, then save or share.
Supported formats
Input: Videos: MP4, MOV.
Output: Videos: MP4 or MOV.
You can keep or switch formats.
What you can adjust
- Start and end times
- Lossless (fast, full quality) or Precise (exact-to-the-frame)
- Mute the audio
- MP4 or MOV output
When to use Trim Video
Cut the dead air
Drop a slow start or a long ending and keep only the part worth watching.
Shorten for sharing
Bring a long video down to a short clip that's quick to text or post.
Keep the best moment
Pull the one highlight out of a longer recording and save just that.
Trim without losing quality
Use Lossless mode for a fast cut that keeps the full original quality.
Tips
- Use Lossless for the fastest cut at full quality; switch to Precise when the cut needs to land on an exact frame.
- You can mute the audio while you trim, so there's no separate step.
- The trimmed clip has to be at least 1 second long.
Frequently asked questions
How do I trim a video without losing quality?
Use Lossless mode. It makes a fast cut and keeps the full original quality of your video.
What's the difference between Lossless and Precise?
Lossless is fast and keeps the full original quality. Precise cuts to the exact frame you pick, which helps when you need the cut at a precise spot.
Can I mute the sound while I trim?
Yes. You can turn off the audio while you trim, all in the same step.
What's the shortest clip I can make?
The trimmed clip needs to be at least 1 second long.
Which video formats can I trim?
You can trim MP4 and MOV videos, and save the result as MP4 or MOV.
Does trimming change my original video?
No. Lessr makes a new trimmed clip and leaves your original untouched, and everything happens on your device with no uploads.
Trim Video runs entirely on your iPhone or iPad — no uploads, no account, no ads.
Download Lessr on the App Store