Merge Videos
Join clips into one video — reorder them and add a fade, slide or wipe between clips.
Everything ran in your browser — nothing was uploaded.
How to use the Merge Videos
- Add two or more clips.
- Reorder them with the arrows and pick a transition (or none).
- Click Process and download the joined video.
About the Merge Videos
Merge Videos joins two or more clips into one file, in the order you set — use the arrows to move clips up or down the list. Between clips you can add a real rendered transition: fade, dissolve, slide left or right, wipe up, or a circle opening, each 0.5 or 1 second long, with the audio cross-faded to match. Because clips can differ in size and format, each one is first re-encoded to a common size and frame rate so they join cleanly. All processing happens in your browser with ffmpeg (WebAssembly), so your videos are never uploaded — private and free with no watermark.
Since every clip is re-encoded (and transitions are rendered), merging is the most demanding video tool — best for a few short clips. Very long or high-resolution videos may be slow or run out of memory.
Frequently asked questions
Is my video uploaded?
No. Merging runs entirely in your browser; your clips stay on your device.
Can I change the order of the clips?
Yes — the clips join in the order shown in the list, and the arrow buttons move any clip up or down before you process.
Can I add a transition between clips?
Yes. Choose fade, dissolve, slide, wipe or circle, at 0.5 or 1 second. The video blends and the audio cross-fades at each join; choose No transition for a straight cut.
Do the clips need to be the same size?
No. Each clip is automatically re-encoded to a common size and frame rate before joining, so mismatched clips still work.