MKV files
Matroska, an open container that will hold essentially any codec plus unlimited subtitle and audio tracks. Excellent for archiving, less reliably supported by hardware players and browsers.
- Extension
.mkv- MIME type
video/x-matroska- Category
- video
- Can convert from
- Yes, via FFmpeg
- Can convert to
- Yes, via FFmpeg
Convert MKV to another format
Convert another format to MKV
Converting MKV files privately
frogConvert runs the conversion engines in your browser as WebAssembly, so a MKV file is read, converted and saved without ever being sent anywhere. That matters most for the files people are least willing to upload: contracts, medical records, unreleased work, anything under an NDA.
It also means the converter works offline. Once the page has loaded, you can turn off the network and keep converting.
Common questions
- Can I open a MKV file without installing anything?
- Yes. frogConvert reads MKV files directly in the browser and converts them to a format you already have software for. Nothing is installed and nothing is uploaded.
- Are my MKV files uploaded to a server?
- No. Every conversion runs locally in your browser through WebAssembly. There is no server to send files to, and the app keeps working with the network disconnected.