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● Files never leave your device Make a side-by-side video
Combine two videos into a single frame playing at the same time: side by side, stacked top/bottom, or picture-in-picture. Both audio tracks are mixed together. A live preview shows the layout as you choose it.
Everything happens in this browser tab on your own device — your video is never uploaded to a server, so even multi-gigabyte files stay private. Compositing runs on the built-in CPU engine, so larger clips take a while.
How to
- Add the first video. Drop your main video into havenConverter.
- Add a second video. Under Composite, add a second clip and choose a layout (side-by-side, stacked, or PiP).
- Export. Export the combined video — both clips play together with mixed audio.
Frequently asked questions
- Do both videos play at once?
- Yes — they play simultaneously in the chosen layout, and the output runs for the length of the shorter clip.
- What layouts are available?
- Side by side, stacked (top/bottom), and picture-in-picture.
- Is anything uploaded?
- No — compositing is done locally on your device.
Guides
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