The fastest way to merge videos on iPhone is the Photos app, which comes built in
Open Photos, tap the Albums tab at the bottom, then create a new album and add the videos you want to merge in order. Tap Select, choose each video, then tap Add. Once all videos are in the album in the right sequence, open the album, tap Select again, then tap the share icon (the box with an arrow). Scroll down and tap Slideshow — this plays them back-to-back, but it does not actually combine them into one file.
For an actual merged video file, you need an app. The most straightforward option is iMovie, which Apple makes and includes free on most iPhones. Open iMovie, tap the plus icon to create a new project, select Movie, then tap the plus icon again to add clips. Select each video in the order you want them, tap Create Movie, then tap the share icon and choose Save Video to save the merged result to your Photos library.
If iMovie is not on your phone, open the App Store, search for iMovie, and tap Get. You may need to sign in with your Apple ID. The app is free and takes about two minutes to read on a standard connection.
Key Takeaways
- iMovie is the simplest tool for merging videos on iPhone because it is free, made by Apple, and handles the entire process in one app.
- You add videos to iMovie in the order you want them, and the app combines them into a single file you can save back to Photos.
- The built-in Photos app can play videos in sequence but does not actually merge them into one file.
- Third-party apps like InShot and CapCut also merge videos, but they add watermarks unless you pay for the full version.
How to use iMovie to merge videos step by step
Open iMovie and tap the plus icon in the top left corner. Select Movie from the menu that appears. Tap the plus icon again to add clips — this opens your Photos library. Tap each video you want to merge in the order you want them to appear. A checkmark appears on each one you select. When you have chosen all the videos, tap Create Movie at the bottom right.
iMovie loads the clips into a timeline at the bottom of the screen. You can see each clip as a separate segment. If you need to reorder them, press and hold a clip and drag it left or right. To remove a clip, tap it once to select it, then press Delete on your keyboard or swipe left and tap the trash icon. When the order is correct, tap the share icon (the box with an arrow) in the top right, then tap Save Video.
A menu appears asking where to save the video and what quality to use. Select High Quality or Medium Quality — High Quality makes a larger file but looks better. Tap Save, and iMovie exports the merged video to your Photos library. This can take several minutes depending on how long the videos are and how much storage your phone has available.
What to do if iMovie is too slow or crashes
iMovie sometimes runs slowly or closes unexpectedly if your iPhone is low on storage or running many apps at once. Before you start a merge, close other apps by swiping up from the bottom of the screen and swiping up on each app preview. Check your available storage by opening Settings, tapping General, then About — look at the Available number. If it is less than 2 GB, delete photos, videos, or apps you do not use, then try again.
If iMovie keeps crashing, restart your iPhone by holding the power button and either volume button until the power-off slider appears, then drag it to turn off the phone. Wait 30 seconds, then hold the power button again until the Apple logo appears. This clears temporary files and often fixes app crashes.
If the problem continues, delete iMovie and reinstall it. Open Settings, tap General, then iPhone Storage. Find iMovie in the list, tap it, then tap Offload App. Wait a few seconds, then tap Reinstall App. This removes the app and its temporary files, then downloads a fresh copy from the App Store.
Third-party apps that merge videos
InShot and CapCut are popular alternatives to iMovie. Both are free to read and have straightforward interfaces for combining videos. InShot lets you add transitions between clips, adjust the speed of each video, and add music or text. CapCut offers similar features plus the ability to add filters and effects. Both apps add a watermark to the finished video unless you pay for a premium subscription.
InShot costs $9.99 per month or $59.99 per year to remove the watermark. CapCut is free without a watermark in most countries, though some regions require a subscription for certain features. If you only need to merge videos occasionally and do not mind a small watermark, either app works well. If you merge videos regularly or need a watermark-free result, iMovie remains the better choice because it is free and does not add any branding.
How to merge videos from different sources
If your videos come from different places — some recorded on your iPhone, some downloaded from the internet, some sent by friends — they all work the same way in iMovie. Open iMovie, create a new Movie project, and add clips from your Photos library. iMovie automatically handles different video formats and resolutions, so you do not need to convert anything first.
If a video does not appear in your Photos library, it may be in the Files app instead. Open Files, find the video, press and hold it, tap Share, then tap Save to Photos. Wait for the save to complete, then open iMovie and add it as normal. This works for videos downloaded from email, messaging apps, or cloud storage services like Google Drive or Dropbox.
Reducing file size before merging
If your videos are very long or recorded in high resolution, the merged file can be several gigabytes and take a long time to export. Before you merge, consider trimming each video to remove unnecessary parts. Open Photos, select a video, tap Edit, then drag the handles at the bottom left and right to shorten it. Tap Done to save the trimmed version.
You can also reduce resolution before merging. In iMovie, after you add all your clips, tap the settings icon (three horizontal lines) at the top right, then look for a resolution or quality option. Some versions of iMovie let you choose the export resolution before saving, which can cut file size in half. If you are short on storage space, choose Medium Quality when you save the final video.
What happens if you run out of storage during the merge
If your iPhone runs out of storage while iMovie is exporting, the export fails and you lose the merged video. Before you start, check your available storage again — you need at least as much free space as the total size of all your videos combined. If you are close to the limit, delete old photos or videos you no longer need, or move them to cloud storage like iCloud or Google Photos.
If the export fails partway through, iMovie usually saves a draft of your project. Open iMovie, and you should see the project in your recent list. You can edit it again and try exporting once you have freed up more storage. If the project is gone, you can recreate it by adding the clips again — iMovie remembers the order you chose last time.
Frequently Asked Questions
Can I merge videos that are different lengths or resolutions?
Yes. iMovie automatically adjusts videos to match, so you can combine a 30-second clip with a 5-minute clip, or a video shot in portrait mode with one shot in landscape. The merged video uses the resolution of the highest-quality clip, and shorter clips straightforward play for their full duration before moving to the next one.
How long does it take to merge videos in iMovie?
Merging itself is when ready — adding clips to a project takes seconds. Exporting the merged video to save it takes longer, usually 2 to 10 minutes depending on the total length and your iPhone model. Newer iPhones export faster than older ones. You can use your phone for other tasks while the export runs in the background.
Can I add music or transitions between videos?
Yes, iMovie includes built-in transitions and lets you add music from your library or from iMovie's royalty-free music collection. After you arrange your clips, tap a clip to select it, then tap the transition icon (overlapping circles) to add a fade or other effect between clips. Tap the music icon to add a soundtrack to the entire video.
What if I want to merge videos but keep them separate on my phone?
When you save a merged video in iMovie, it creates a new file in your Photos library. Your original videos stay exactly as they were — merging does not delete or change them. If you want to keep both the merged version and the originals, you can. If you want to delete the originals later, open Photos, select each one, and tap Delete.
Can I undo a merge after I save it?
No, once you save a merged video, it is a permanent new file. You cannot undo the merge or separate the videos back into individual clips. If you think you might want to change the merge later, keep your iMovie project open instead of deleting it — you can reopen the project, reorder clips, and export again with different settings.