How to Trim a Video on iPhone (Photos App, Keep the Original)

Most phone videos have the same problem: a few seconds of fumbling at the start and a shaky ending where you reach for the button. Trimming cuts those bits off so the clip starts and stops exactly where the good part does. It's the single quickest edit that makes a video feel finished.

You don't need an extra app for it. The Photos app on iPhone has a trim tool built in, and Apple's help pages describe it clearly. Here's how it works, how to keep your original safe, and when to reach for iMovie instead.

Shortening a clip with the Photos frame viewer

Apple's iPhone User Guide gives these steps:

1. Open the Photos app and tap the video you want to shorten.
2. Tap Edit.
3. Look for the frame viewer, the strip of thumbnails below the video.
4. Drag the left end to set a new start point and the right end to set a new stop point.
5. Tap Play to preview the result.
6. Tap Done.

The handles go yellow as you drag them, and Apple's support article says tapping Play lets you check the shortened version before you commit. Take a second to do that. It's easy to clip the first word someone says.

Save Video or Save Video as New Clip: which to tap

When you tap Done, iPhone asks you how to save, and this choice matters more than people think. According to Apple:

Option	What you end up with	Can you undo it later?
Save Video	Only the shortened version	Yes, with Revert, then Revert to Original
Save Video as New Clip	The original plus a separate shortened copy	The new copy can't go back to full length

Apple's help says a video saved as a new clip can't be reverted to the original. Its support article adds that Revert to Original on that copy undoes things like exposure or filters, but it won't restore the length. Your original is still sitting in your library, though, so nothing's lost.

I use Save Video as New Clip when I want a short teaser for social and the full version for my website. For a quick tidy-up of a family clip, Save Video is fine because you can revert it.

Undoing a trim you regret

If you chose Save Video and want the full length back, Apple's support article says to open the video, tap Edit, tap Revert, then tap Revert to Original. The cut-off seconds come back, because Photos keeps them behind the scenes.

Why trimming helps when a video is too big to send

Apple's own support article makes this point: if a video is too long to send through Mail or Messages, trimming it shorter is one fix. Fewer seconds means a smaller file. If you only need to share the highlight, trim first and send that.

Trimming the slow-motion section of a Slo-mo clip

Slo-mo videos have a second set of controls. Apple's help says that after you tap Edit on a video shot in Slo-mo mode, you drag the black vertical bars beneath the frame viewer to set where the slow motion starts and ends. So you can keep the start at normal speed and slow it down just for the moment that matters, then trim the ends as usual.

Cutting clips inside a longer iMovie project

The Photos trim tool only changes the start and end. If you want to remove a bit from the middle, or shorten several clips that you're joining together, iMovie is the better tool. Apple's iMovie guide says you open a movie project, tap a clip in the timeline and drag either yellow trim handle to shorten or lengthen it.

One detail from Apple's guide: if a trim handle won't move when you try to make a clip longer, there are simply no more frames of video on that end. For splitting a clip into pieces, iMovie has a Split control when you tap a clip.

Using shortened clips for business content

Short, tight clips do better almost everywhere. A few habits that help:

• Start on the action or the first useful word, not the set-up.
• End just after the point is made. Viewers rarely need the wave goodbye.
• Save a new clip for each platform if you want different lengths.
• Keep the untrimmed original for your own archive.

If you're building short promo pieces on your phone, my guide to making promo videos for social on your iPhone covers the planning side. And if your clips are screen recordings for tutorials, picking the right recording software for tutorials saves a lot of cutting later.

When the iPhone trim handles won't cooperate

• No frame viewer showing: make sure you tapped Edit and that the Video tab is selected at the bottom.
• Can't get the full length back: if you saved a new clip, open the original in your library instead.
• Handles hard to place: drag slowly, then tap Play to check where each cut lands.
• Need to remove the middle: use iMovie's Split control rather than Photos.
• Menus look different: Apple updates Photos with each iOS version, so labels can shift slightly.

Frequently asked questions

How do I trim a video on my iPhone?

Open the video in Photos, tap Edit, drag either end of the frame viewer below the video to set the start and stop times, then tap Done and choose Save Video or Save Video as New Clip.

Does trimming a video on iPhone delete the original?

Not permanently if you tap Save Video, because you can tap Edit, Revert, then Revert to Original. Save Video as New Clip keeps the original and adds a shorter copy.

Can I undo a trim on iPhone?

Yes, for videos saved with Save Video. Open it, tap Edit, tap Revert, then Revert to Original. A video saved as a new clip can't be reverted to full length.

Can I cut out the middle of a video on iPhone?

The Photos trim tool only changes the start and end. In iMovie you can split a clip and remove the section you don't want.

How do I shorten a video to send it?

Trim it in Photos. Apple suggests this when a video is too long to send through Mail or Messages, because a shorter video is a smaller file.