Merge Videos
Combine several clips into a single video: trip highlights, lecture parts, or phone recordings that were split into pieces.
Free · No sign-up · Files stay on your device
How to use Merge Videos
- 1Add two or more videos.
- 2Put them in order.
- 3Choose the output size.
- 4Click "Merge videos" and download.
Features
- Join up to 10 clips
- Mix MP4, MOV, WebM and MKV
- Reorder before merging
- 1080p, 720p or 480p output
- No upload
Different sizes and formats
Clips can come from different phones and cameras. Each one is scaled to fit the chosen output size, with black bars where the shape differs, so nothing is stretched or cropped.
Private, in-browser processing
This tool uses FFmpeg, the open-source engine behind most professional video software, running inside your browser. The first time you use it, the engine (about 30 MB) is downloaded once and then cached, so later conversions start straight away.
Frequently asked questions
Are my files uploaded?
No. Processing happens on your device with FFmpeg compiled to WebAssembly, so your video and audio never leave your computer or phone.
Why does it take a while?
Video processing is demanding, and your browser does it on your own device instead of a big server. Short clips take seconds; long or 4K videos can take several minutes. Keep the tab open until it finishes.
What if a clip has no sound?
Clips are joined with their audio when every clip has sound; if any clip is silent, the merged video is created without audio.