How do I merge two videos into one?

Upload both to a Studio project. Cmd-click (Ctrl-click on Windows) them in the order they should play and press Add to timeline. The second clip lands right where the first ends. Then press Export video and you have one MP4.

How do I merge videos on iPhone?

Use iMovie, Apple's free app. Tap Start New Project, then Movie. Tap the clips you want, then Create Movie. To change the order, touch and hold a clip and drag it. Tap Done, then Share, then Save Video, and the joined video is in your photo library. Apple's guide to editing video in Photos covers trimming and cropping, not joining.

Can I merge vertical and horizontal videos?

Yes. The joined video has one shape, set by the Studio canvas. Each clip is fitted inside it, so an upright clip on a wide canvas gets black bars at the sides. To fill the frame, turn off Keep aspect ratio and set the clip to the canvas size. Crop focus picks what stays. Or put it over a blurred copy of itself.

Can I change the order of the clips?

Yes. The clips land in the order you clicked them. If you Shift-click a range instead, they follow the media panel's order, which is by filename, so naming files 01, 02, 03 works. To move a clip later, drag it along the timeline into free space and slide the others to close the gap. Snapping, Shift M, lines up the edges.

Does merging videos lower the quality?

Studio renders a new file at 720p, 1080p or 4K and 24, 30 or 60 frames per second. Match the export to your best clip and the picture holds up. To join clips from the same camera without re-encoding them at all, use the FFmpeg fast join on this page.

Which video formats can I merge?

Studio takes MP4, MOV and WebM files that play in your browser, and you can mix them in one project. It exports MP4 (H.264) or WebM. Convert an MKV, AVI or WMV file to MP4 first with Sceneform's free converters.

Can I add transitions or music between the clips?

Yes. Each clip can have an entry and an exit transition: Fade, Slide, Zoom or Swirl, from 10 to 120 frames. A music track on its own row under the clips plays across every join, with its own volume and fades.

Can I put two videos side by side instead?

That's a collage, not a join. Shrink each clip on the Studio canvas and place them next to each other on separate rows of the timeline, so they play at the same time. The video collage maker page shows how.

Plans start at $19 a month, and every plan includes Studio: join your clips, fix mixed shapes and sound, and export up to 4K with no watermark. The iPhone, Android, Windows, Mac and FFmpeg methods on this page are free.

What does it cost to merge videos in Studio?

Joining clips costs nothing. The first export of each project is free, and each export after it costs 10 credits. The $19 Creator plan has 500 credits a month. Every paid plan includes commercial use and exports without a watermark.

Video joiner.

Merge your clips into one video.

Pick your clips in Studio and they land end to end, in the order you picked them. Settle the shapes and sound at each join, then export one MP4.

Free, with no upload: use an app on your phone or computer. Studio is the paid route, for mixed shapes, sound and transitions.

iPhone: In iMovie, Apple's free app: tap Start New Project, then Movie. Tap the clips you want, then Create Movie. Touch and hold a clip to drag it into place. Tap Done, Share, Save Video.
Android: In Google Photos: tap Create, then Highlight video, then Select content. Pick your videos, tap Create video, then Next. Touch and hold a clip to drag it into order, then tap Save.

4 clips in, one video out

0:26

Join clips in Studio

Studio comes with every plan, from $19 a month. Each project's first export is included, up to 4K with no watermark. It runs in a desktop browser.

Windows: In Clipchamp: import the clips under My media, drag them side by side onto one track of the timeline, then click Export and pick 1080p.
Mac: In QuickTime Player: open the first clip and choose View > Show Clips. Choose Edit > Add Clip to End, pick the next clip, click Done, then File > Export As.
Any computer: With FFmpeg, for clips from the same camera and settings: list them in list.txt, then run the command below. Clips that don't match need the re-encoding command further down the page.
ffmpeg -f concat -safe 0 -i list.txt -c copy joined.mp4

What each app saves, with sources

How to merge videos for free.What each free app saves.

The free steps above follow each maker's own help page, linked here.

iPhone

In iMovie, Apple's free app

Save Video puts the joined video in your photo library. Apple's guide to editing video in the Photos app covers trimming, speed, cropping and sound, but not joining, so iMovie is the free way.

Android

In Google Photos

Save keeps the highlight video in Google Photos; search for Highlight videos to find it. Google says older phones may not make highlight videos, and its music is for personal use only.

Make creations with Google Photos

Windows

In Clipchamp, built into Windows 11

Clipchamp's free plan exports up to 1080p. Hover over a gap between two clips and press Delete this gap to close it. It also runs in a browser at app.clipchamp.com.

Mac

In QuickTime Player

Export As saves a QuickTime movie (.mov), not an MP4, at 4K, 1080p, 720p or 480p. Sizes larger than your movie are dimmed.

How to merge videos with FFmpeg

Free, on Windows, Mac or Linux

Clips from the same camera

Write the clips into a file called list.txt, one line each, in the order they play. FFmpeg's docs say every file needs the same streams: same codecs, same time base. Then it joins them without re-encoding, so the picture doesn't change.

file '01-latte.mp4'
file '02-coast-road.mp4'

ffmpeg -f concat -safe 0 -i list.txt -c copy joined.mp4

Clips that don't match

Fits both clips into a 1920 × 1080 frame at 30 fps and joins picture and sound. Both clips need a sound track for this one.

ffmpeg -i wide.mp4 -i upright.mp4 -filter_complex "[0:v]scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:-1:-1,setsar=1,fps=30[v0];[1:v]scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:-1:-1,setsar=1,fps=30[v1];[v0][0:a][v1][1:a]concat=n=2:v=1:a=1[v][a]" -map "[v]" -map "[a]" joined.mp4

FFmpeg concat documentation

How to merge videos in Studio.Three steps, one file.

1
Set the canvas
Start a Studio project. It opens upright, 1080 × 1920. For wide clips, click an empty part of the canvas and press Swap canvas width and height.
CanvasW 1920H 1080
2
Pick the clips in order
Upload them all. Cmd-click (Ctrl-click on Windows) each clip in the order it should play, then press Add to timeline. They land end to end, starting at the playhead.
Upload⌘-clickAdd to timeline
3
Export one video
Play it through once. Then choose MP4 or WebM, 720p, 1080p or 4K, and press Export video. There's no watermark.
MP4 (H.264)1080pExport video

Name the files in order first. The media panel sorts by name, so a Shift-click from the first to the last picks them in that order.

01-latte.mp4
02-coast-road.mp4
03-paddle-out.mp4
04-wave.mp4

Do the clips have to match?No. The joined video picks one of everything.

These are the four clips from the top of the page, as they came off the camera. Two sizes, two shapes, two frame rates, and only half of them have sound.

Clip	Picture	Shape	Frame rate	Sound	Length
01-latte.mp4	1280 × 720	16:9	24 fps	Sound	0:08
02-coast-road.mp4	1280 × 720	16:9	24 fps	Sound	0:08
03-paddle-out.mp4	1280 × 720	16:9	60 fps	No sound	0:05
04-wave.mp4	720 × 1280	9:16	60 fps	No sound	0:05
The joined video	1920 × 1080 canvas	16:9	30 fps	One mix	0:26

01-latte.mp4
1280 × 720 · 16:9 · 24 fps · Sound · 0:08
02-coast-road.mp4
1280 × 720 · 16:9 · 24 fps · Sound · 0:08
03-paddle-out.mp4
1280 × 720 · 16:9 · 60 fps · No sound · 0:05
04-wave.mp4
720 × 1280 · 9:16 · 60 fps · No sound · 0:05
The joined video
1920 × 1080 canvas · 16:9 · 30 fps · One mix · 0:26

Different shapes

The video has one canvas. Studio fits each clip inside it, so an upright clip on a wide canvas gets black bars. Fill the frame or fit it over a blurred copy instead.

The upright wave clip fitted over a blurred copy of itself on a wide canvas.

Fit over a blurred copy

Fit, fill or blur

Different frame rates

Clips shot at 24 and 60 frames per second play side by side on the timeline. The export picks one rate for the whole video: 24, 30 or 60.

Some with sound, some without

Each clip has its own Volume and an Enable audio switch, so a loud clip can come down to match the rest. A music track under the whole timeline covers the silent ones.

Add music to video

0:26 0:32

That's why a quick join can break. We ran FFmpeg's fast join, which copies the clips without re-encoding them, on these four files. It finished without an error and wrote a 0:32 file from 0:26 of video, with the upright wave squashed into the wide frame. A fast join only works when every clip matches. Studio renders every clip into the new size, so mixed clips come out right.

Three joins, three choices.Look at each cut before you export.

These are the real last and first frames at each join in the video above.

Join 1 · Latte to Coast road
Leave the cut
Close-up to a wide view of a new place reads as the next moment. A straight cut does the job.
Join 2 · Coast road to Paddle out
Add a fade
High and wide, then legs right at the lens. Give the second clip a Fade entry transition of 30 frames, half a second, to soften the jump.
Join 3 · Paddle out to Wave
Fix the shape
The wave was filmed upright. Fit it over a blurred copy of itself so the wide frame stays full, and the cut lands on the sun in both shots.

A clip that starts or ends on a wasted second needs a trim before the join: drag its edge on the timeline. How to trim a video. Every transition, played.