Merge Videos Online

Put your videos and photos end to end, choose their order, add crossfades, then export a single MP4 file.

The editor is designed for a computer or a tablet: open this page on a larger screen to edit your video.

100% local processing, nothing is uploaded

How does it work?

Drop all your videos and photos at once: they are placed end to end in the order chosen. Drag a clip in the timeline to change its position, or use the “Move” arrows in the right-hand panel.

Each clip can be shortened, and a crossfade can smooth the transition to the next clip. Videos with different formats (landscape, portrait) are fitted to the chosen format, on a black or blurred background.

Export produces a single MP4 file.

Examples

Three holiday videos

Three videos of 45 s, 1 min 20 s and 30 s give a 2 min 35 s video. With two 0.5 s crossfades, it lasts 2 min 34 s: each crossfade overlaps the two clips.

A photo slideshow

Twelve photos shown for 3 seconds each give a 36 s video. With 1 s crossfades between each photo, it lasts 25 s (36 − 11). Each photo’s duration is set in the right-hand panel.

Frequently asked questions

Can I merge videos with different formats?
Yes: MP4, MOV and WebM can be mixed, as well as photos. Choose the final format (16:9, 9:16, 1:1 or 4:5); each clip is fitted into it, with a blurred background if you like.
How do I change the order of the videos?
Drag the clip along the main track: a marker shows its new position. With the keyboard, select the clip and use the “Move to the start” or “Move to the end” buttons.
Is there a length or size limit?
The final video can last up to 10 minutes, because the file is created in the browser’s memory. Imported videos can be up to 2 GB, audio files 500 MB and images 50 MB. For a long project, close other tabs and prefer exporting in 720p.
Does the exported video have a watermark?
No. The exported MP4 file contains no logo or watermark, and the tool is free, with no sign-up.
Are my videos uploaded to a server?
No. Files are read, edited and encoded in your browser, on your device. No video, image or music is uploaded: you can even disconnect once the page has loaded. Closing the tab erases the project.

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