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Merge videos

Put several clips in order and join them into one MP4.

Free · No sign-up · No watermark

🔒 Files never leave your device — processing happens in your browser.

Only process videos you own or have permission to use.

How to use

  1. Choose two or more videos (you can add more later).
  2. Reorder them with the arrows and pick the output size and transition.
  3. Press Merge videos and download the MP4.

Merge videos

Clips with different sizes are fitted into the output size with black bars, so nothing is stretched. Sound from every clip is kept; clips without sound become silence. The result is re-encoded as H.264 + AAC.

Everything is decoded and encoded in your browser, so long or many 4K clips can be slow and need a lot of memory.

Frequently asked questions

Can I merge a vertical and a horizontal video?

Yes. Choose the output size; clips that don't match are fitted with black bars.

Is there a transition?

You can choose a hard cut or a short fade through black between clips.

Are my videos uploaded?

No. They are processed in your browser.

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