Convert
MP4 to WAV
Pull the audio track out of a MP4 video and save it as WAV. WAV is uncompressed PCM: perfect fidelity at roughly 10MB per minute. MP4 almost always carries AAC, so an MP3 or WAV target means a real decode, while pulling the AAC out untouched is instant. Runs on your own Vistalyth Tools instance. Files never reach a third party.
Features
- Audio extracted directly, with no needless video decode
- Bit-exact extraction with no re-encode where the source allows it
- Track selection on MP4 files carrying more than one audio stream
- Your MP4 files are processed on your own server and never uploaded anywhere
What you can do
- Get a podcast or interview out of a recorded MP4 for offline listening
- Lift music or a voiceover from MP4 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 MP4 to WAV 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?
- No. WAV is lossless, so the decoded audio is written out without a second lossy pass.
- My MP4 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 WAV here?
- Choose WAV when the audio is heading into an editor or a transcription pipeline that wants uncompressed input.
- How big will the WAV be?
- WAV is uncompressed or losslessly compressed, so expect tens of megabytes per hour at minimum. Choose MP3 when size matters more than fidelity.
Ready to try MP4 to WAV?
Deploy Vistalyth Tools in under a minute. All 243 tools included. Open source and free forever.