Merge videos

Questions fréquemment posées

When are clips joined without re-encoding?

When they share codec, resolution and encoder settings — typically several recordings from the same phone, camera or screen recorder. Otherwise everything is re-encoded once.

Is there a file size limit?

No fixed limit. The video is read in small slices and the result is streamed to your disk, so even multi-gigabyte files work without filling up memory.

Is my video uploaded to a server?

No. The file is read and written inside your browser tab using WebCodecs — nothing is uploaded, there is no account and no watermark. Once loaded, the page also works offline.