MKV to MP4
Convert Matroska MKV video to MP4. MP4 plays essentially everywhere: browsers, phones, TVs, and editors, while MKV plays in desktop players like VLC, but rarely in browsers or on phones and TVs. Container and codec are handled together, so what comes out is a file that genuinely opens rather than a renamed extension. Runs on your own Vistalyth Tools instance. Files never reach a third party.
Features
- Reads what is actually inside the MKV, rather than trusting the extension
- Bitrate and resolution control, or a stream copy when the codecs already line up
- Audio carried across and re-encoded only when it has to be
- Your MKV files are processed on your own server and never uploaded anywhere
What you can do
- Make a MKV recording playable on a device or site that rejects it
- Standardise mixed-format footage on MP4 before editing
- Re-wrap a MKV for upload without re-shooting or re-exporting
Self-hosted. Your files never leave your network.
Vistalyth Tools runs entirely on your own infrastructure. Files processed with MKV to MP4 are never uploaded to third-party servers. Deploy a single Docker container and process files with full privacy, no watermarks, and no usage limits. Open source under AGPL-3.0.
Frequently asked questions
- Does converting MKV to MP4 reduce quality?
- An MKV source very often already holds H.264 or H.265, in which case the video is copied across untouched and only the container changes. Where a re-encode is needed it is a real one, so start from the best source you have.
- Why target MP4?
- Pick MP4 unless you have a specific reason not to. It is the one container you can hand to a stranger and simply expect to work.
- How long does it take?
- A stream copy takes seconds. A full re-encode is bound by your CPU or GPU and scales with length and resolution. Progress is reported live while it runs.
Ready to try MKV to MP4?
Deploy Vistalyth Tools in under a minute. All 243 tools included. Open source and free forever.