Convert Video
Drop a video file here or click to browse
MP4, WebM, MOV, MKV, AVI
How it works
1
Drop your video
Drop an MP4, MOV, MKV, WebM, or AVI file. No size limit.
2
Choose output format
Pick MP4, WebM, MOV, or GIF as your output format.
3
Download converted video
FFmpeg runs entirely in your browser. Video downloads when done.
Why Mutari?
- ✓ Your files never leave your browser. No server processing, ever
- ✓ Works offline once the page loads
- ✓ No account, no signup, completely free
- ✓ Powered by FFmpeg WebAssembly for production-grade encoding in your browser
Unlike cloud-based tools
Most online conversion tools upload your files to their servers for processing. Mutari is different: everything runs in your browser using WebAssembly. No file ever leaves your device, which means no privacy risk, no upload wait time, and no file size restrictions imposed by server limits.
Frequently asked questions
How long does video conversion take?
It depends on file size and your device's processing power. FFmpeg runs in your browser via WebAssembly, so larger files take longer.
What formats are supported?
Input: MP4, WebM, MOV, MKV, AVI. Output: MP4, WebM, MOV, GIF. The most common conversion is MOV to MP4.
Is there a file size limit?
No server-imposed limit. Large files work but may take longer and use more memory since everything runs locally in your browser.