Convert
MKV to MP3
Pull the audio track out of a MKV video and save it as MP3. MP3 is the safe default: every player built in the last 25 years reads it. MKV is the permissive one: the audio inside might be AC3, DTS, Opus, FLAC, or several tracks at once. Pick the track you want, then choose a target every player can read. Runs on your own Vistalyth Tools instance. Files never reach a third party.
Features
- Audio extracted directly, with no needless video decode
- Bitrate selectable, so you set the size-versus-fidelity point
- Track selection on MKV files carrying more than one audio stream
- Your MKV files are processed on your own server and never uploaded anywhere
What you can do
- Get a podcast or interview out of a recorded MKV for offline listening
- Lift music or a voiceover from MKV footage for reuse
- Feed the audio to transcription or analysis that will not take video
Self-hosted. Your files never leave your network.
Vistalyth Tools runs entirely on your own infrastructure. Files processed with MKV to MP3 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 extracting audio re-encode it?
- Yes, unless the source track is already MP3, in which case it is copied out untouched. Going from one lossy format to another loses a little, so pick the highest bitrate you are willing to store.
- My MKV has several audio tracks. Which one do I get?
- The default track unless you choose another. Multi-track files list what they contain so you can pick.
- Why pick MP3 here?
- Choose MP3 when the file has to simply work somewhere you do not control.
- How big will the MP3 be?
- Roughly bitrate times duration. At 192kbps that works out around 1.4MB per minute.
Ready to try MKV to MP3?
Deploy Vistalyth Tools in under a minute. All 243 tools included. Open source and free forever.