Merge videos

How it works

1. 1

   Add your clips

   Drop two or more videos at once. They stay on your device.

2. 2

   Put them in order

   Drag rows (or use the arrows) until the sequence is right; add more clips any time.

3. 3

   Download

   One combined MP4, no watermark, no signup.

Joining clips that were never recorded the same way

Merging is only trivial when the clips already match. In practice they rarely do: one was shot on a phone at 1080p and 30 fps, another is a 4K screen recording at 60 fps, and a third came out of a download at some resolution nobody chose. You cannot simply lay those end to end, because a video file describes one frame size and one timebase for its whole length.

So the clips have to be reconciled before they can be concatenated. This tool normalizes them onto a common resolution and frame rate, scaling and padding where the shapes disagree rather than stretching anything to fit, then encodes the sequence as a single continuous file. Audio is lined up the same way, so a clip with no sound does not knock everything after it out of sync.

The order you drop them in is the order they play. That sounds obvious, but it is the part worth checking before you commit to an encode, because a merge is the one edit where fixing a mistake means doing the whole job again.

Combine videos in the browser, with no upload and no clip limit

Every online merger has the same shape of catch: upload each file, wait, accept a two or three clip limit on the free tier, and take a watermark on the result. Here the clips are read from your disk and stitched on your own machine, so none of that applies. There is no upload, no cap on how many clips you add or how large they are, and no watermark.

That also means the footage in a merge stays private even though a merge usually involves several files at once, which is exactly the situation where handing everything to a server is least appealing.

Trim each clip before merging rather than after. Cutting the dead ends first means the encoder is not spending bitrate and processing time on footage you were always going to lose, and it saves re-encoding the whole timeline to fix one sloppy edge.

Why nothing uploads

Other tools send your video to their servers, which costs them money per file, so they add watermarks, cap file sizes, and make you sign up. This tool does the work right here in your browser using your own device. Your file is never uploaded, so there is no wait, no watermark, no size limit, and no account.

Questions

Can I join videos with different sizes or formats?

Yes. Every clip is scaled to the first clip's frame, letterboxed if the shape differs, never stretched, so mixed phone and camera footage joins cleanly.

How many clips can I merge?

There's no fixed limit; memory is the practical bound. Joining a handful of normal clips works fine even on phones.

What happens to the audio?

Soundtracks are joined in sequence. If one clip has no audio, the merge still completes (the output is silent in that case).

Do my videos get uploaded?

No. Merging happens in your browser; your files never leave your device.

Is there a watermark?

No. There is also no limit on how many clips you merge, which is where most free mergers stop you: three clips, then a watermark, then a subscription.

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