Why Tools Ku
- Free, no signup
- Browser-local, not uploaded
- No install
- Desktop & mobile
Video to MKV: Export MKV container format. Uses ffmpeg.wasm locally—video not uploaded.
First run may download wasm; prefer desktop for large files.
Steps
- Add video
- Set format/range
- Transcode
- Download
FAQ
- Signup required for Video to MKV?
- No. Free with no account.
- Uploaded?
- No.
- Slow?
- Browser transcoding is CPU-heavy.
- Formats?
- See on-page ffmpeg.wasm support.
- Mobile browsers?
- Yes; heavy tasks better on desktop Wi-Fi.
- Copy or download?
- Yes—copy text or download files as supported.