Video Merger and Joiner
Merge two or more videos into one: add your clips, drag them into order, trim the ends and add a transition or music if you want, then export a single MP4. Free plan available; a paid plan removes the small badge.
Video Merger and Joiner Features
Used by creators, teachers and small teams to merge clips into one video
A video merger joins separate clips into one file: you line them up on a timeline and export them as one continuous video. To merge videos with EchoWave, add your clips, drag them into the order you want, trim any rough starts or endings, then export an MP4. Merging, joining and combining videos are the same job here, whether you have two clips or a whole folder. For MP4 files from cameras and phones that split long recordings into chapters, see the MP4 joiner.
How to merge videos online
Combine multiple videos into one in a few minutes, with nothing to install:
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1. Upload your video clips
Add clips from your computer or phone, or paste a direct link to a video file. MP4, MOV, AVI, WebM, MKV and other common formats work, and you can mix formats in one project.
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2. Arrange and edit
Drag the clips into order on the timeline; they snap together with no gap. Trim the ends of a clip, split one in two, add a transition between clips, or lay a music track or voiceover under the whole thing.
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3. Export and share
Click Export to make one MP4 of the whole timeline, then download it. Free exports are 720p with a small EchoWave badge; paid plans remove the badge and export at 1080p, 4K or 8K.
What creators say after trying EchoWave
How merging works on the timeline
Each clip you add becomes a block on the timeline, and the clips play back to back in the order they sit there. Magnetic snapping pulls a clip against its neighbor so there is no black gap, and if you delete a clip, ripple delete closes the hole. To change the order, drag a clip to a new spot.
Then refine the joins. Trim a clip's head or tail so it cuts in and out exactly where you want, or split a long clip and drop another one between the halves. Between any two clips you can keep a hard cut or add one of 56 video transitions across five families: Dissolve, Wipe, Slide, Zoom and Stylized. A dissolve softens the cut when two clips were shot at different times or in different light. Your original files are never changed, and undo takes back any step.
What people merge videos for
- Phone clips into one video. Ten short takes from a trip or a party become one clip the group chat can play.
- A montage or Reel. Combine the highlights of an event or a product demo into one vertical video.
- An intro in front of a recording. Put a short talking-head intro before a screen recording or a tutorial.
- B-roll under a voiceover. Lay several short shots end to end and run one narration or music track across all of them.
- Game or stream segments. Join separate captures into one upload without recording again.
If you want clips side by side at the same time rather than one after another, use the split screen maker instead. A merger is for clips in sequence.
Merging clips with different sizes or orientations
A project has one frame size. It takes its shape from the first clip you add, or you can set it to 16:9, 9:16, 1:1 or 4:5. Every other clip is placed on that frame, so a vertical phone clip in a 16:9 project shows space at its sides until you scale it up to fill. The cleanest merges use clips that share an orientation; otherwise pick the shape that most of your footage has and adjust the odd one out.
| Where it is going | Project shape | Typical size |
|---|---|---|
| TikTok, Instagram Reels, YouTube Shorts | 9:16 | 1080 x 1920 |
| Instagram or Facebook feed | 1:1 or 4:5 | 1080 x 1080 or 1080 x 1350 |
| YouTube, Vimeo, a website | 16:9 | 1920 x 1080 |
Supported formats and export
You can add MP4, MOV, M4V, WebM, MKV, AVI and other common formats, plus still images (JPG, PNG, WebP) to hold on screen and audio files (MP3, M4A, WAV, AAC) for music or narration. The merged video exports as an MP4, which plays on phones, browsers, smart TVs and every major social platform.
Combine videos on iPhone or Android
You do not need an app to combine videos on a phone. Open EchoWave in Safari or Chrome, add clips from your camera roll, drag them into order and export. Clips from the same phone usually share a size and frame rate, so they merge cleanly. A clip someone sent you through a messaging app may have been shrunk on the way, so expect it to look softer next to your originals.
Quality, file size and price
Output quality follows the export resolution: 720p on the free plan, 1080p on Creator, 4K on Pro and 8K on Ultra. Free exports carry a small EchoWave badge that a paid plan removes. If the merged file is too large to upload or send, run it through the video compressor afterwards.
More than a basic joiner
Your originals stay untouched
Merging never changes the files you upload. Every trim, split and transition lives in the project, so you can undo any step and export again at a different size.
Works on any device
There is nothing to install. EchoWave opens in a browser, so you can merge videos from a laptop, a tablet or a phone, and your project saves as you work.
About the EchoWave team
EchoWave is a browser-based video and audio editor built by Lemon Vault LLC since 2018. The people who build the editor write these guides and test every step in the production app before publishing.
Video merger FAQ
How do I merge two videos into one?
Add both clips to the timeline, drag them into the order you want so they snap together with no gap, then click Export. The two clips come out as one continuous MP4. You can trim either clip first, or add a transition between them so the change from one to the other is softer than a straight cut.
How do I combine multiple videos into one?
Add all the clips at once, then drag each one into place on the timeline; they play back to back in that order. Trim the ends that drag, add transitions where a hard cut feels abrupt, and export a single MP4. The same steps work for three clips or thirty, though very long projects take longer to export.
What is the difference between a video merger and a video joiner?
There is none in practice: merging, joining and combining videos all mean putting clips one after another into a single file. This page covers all three. Some people also say video combiner or video stitcher. If you want videos side by side at the same time instead, that is a split screen or a collage, which is a different tool.
Can I merge videos with different sizes or orientations?
Yes. The project takes its frame from the first clip, or from the 16:9, 9:16, 1:1 or 4:5 shape you choose, and every clip is placed on that frame. A vertical clip in a widescreen project shows space at its sides until you scale it up to fill, so merges look cleanest when clips share an orientation.
Can I add transitions between clips?
Yes. Between any two clips you can keep a hard cut or add one of 56 transitions in five families: Dissolve, Wipe, Slide, Zoom and Stylized. Each transition has a duration and easing you can change, and the preview shows the same transition the export will use.
Can I add background music or a voiceover?
Yes. Add a music file or record a voiceover as its own audio track, and it runs under the whole merged video instead of restarting with each clip. You can trim the track to the length of the video so it ends when the last clip does.
How do I combine videos on iPhone without an app?
Open EchoWave in Safari, add the clips from your camera roll, drag them into order and export. Nothing needs installing, and you skip the multi-clip steps in the Photos app or iMovie. The same steps combine videos on Android in Chrome.
What formats can I merge, and what do I get?
You can add MP4, MOV, M4V, WebM, MKV, AVI and other common video formats, and mix them in one project. The merged video exports as an MP4, which plays on phones, browsers, smart TVs and every major social platform. Images and audio files can go in the same project.
Will merging reduce the quality?
Quality follows the export resolution you choose: 720p on the free plan, 1080p on Creator, 4K on Pro and 8K on Ultra. Your original clips are never changed. If the merged file comes out too large to share, compress it afterwards rather than exporting at a lower size than you need.
Is the video merger free? Will there be a watermark?
You can merge and export videos on the free plan. Free exports are 720p and carry a small EchoWave badge in the corner. A paid plan removes the badge and raises the export size to 1080p, 4K or 8K depending on the plan.
Ready to combine your videos? Nothing to install.
Start merging on the free plan, no credit card needed. Free exports carry a small EchoWave badge; upgrade to remove it.
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