Video Merger

Join clips end to end, in order.

Free in your browser for MP4, M4V and MOV files up to 400 MB total — nothing is uploaded. Larger files, and other containers over 60 MB, run on our servers and cost credits. The tool tells you which path your file is taking before you start it.

Upload Videos to Merge

Click to select multiple video files (minimum 2)

Supports: MP4, WEBM, MOV

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Free for MP4s

Joined in this tab without re-encoding, so nothing is uploaded and no quality is lost. Big or awkward files go to our servers instead.

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Reorder Videos

Arrange videos in any order before merging

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MP4 Output

Get high-quality MP4 merged videos

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Important

Clips join cleanly when they share a resolution and codec — recordings from the same camera or phone almost always do. Mixing formats forces a re-encode, which is slow in a browser, so those go to our servers. The note above the button tells you which path your clips are taking before anything starts.

Joining clips, and what decides where it runs

MP4s totalling up to 400 MB are joined in your own tab. Nothing is uploaded, there is no account to create and no watermark on the result. Clips are joined in the order you arrange them, top to bottom.

Clips that disagree with each other — different resolutions, frame rates or codecs — have to be reconciled before they can be joined at all, and that is heavier work than a browser tab can do well. That case, along with anything over 400 MB in total, runs on our servers instead: it costs credits, and the files are deleted once the job finishes.

The tool works out which path applies and says so before it starts.

Frequently asked questions

Does this one upload my videos?+

Usually not. MP4, M4V and MOV clips totalling up to 400MB are joined by ffmpeg running inside this tab, so nothing leaves your machine and it costs nothing. Only a set too large for that, or other containers over 60MB, goes to our server, and the tool says which before you start.

What does it cost?+

Nothing, for anything that fits in the browser — no account, no watermark, no cap on how many you join. Clips too large for a tab run on our servers instead, charged in credits by upload size, with the price shown before the job starts.

Do the clips need to match?+

Clips with the same resolution and codec join fastest, and are the case that can be done in your browser — they are copied end to end without re-encoding. Mismatched clips have to be re-encoded to line up, which is slow enough in a tab that we send those to a server.

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