Extract audio from an MP4
Drop an MP4, choose your output format (MP3, WAV, or M4A), and download the audio track. The extraction runs entirely in your browser — the video never leaves your device.
About extracting audio from video
An MP4 file is a container that can hold one or more video streams, audio streams, and subtitles. Extracting the audio track pulls out just the sound — useful for archiving a recording, creating a podcast episode from a video talk, or working with the audio in an editor that doesn't handle video files.
MP3 is a lossy compressed format, compact and universally supported. WAV is uncompressed LPCM — the largest file but with no additional quality loss beyond what was already in the MP4. M4A (AAC in an MP4 container) is the native format for Apple devices and gives good quality at a small file size.
Is it private?
Yes. The extractor is WebAssembly and browser APIs running on your own machine. Nothing is uploaded, stored, or seen by us — there is no server to send files to.
Frequently asked questions
- Which output format should I choose?
- MP3 is a lossy compressed format that is compact and universally supported. WAV is uncompressed LPCM, so it is the largest file but adds no quality loss beyond what was already in the MP4. M4A is AAC in an MP4 container, the native format for Apple devices, and gives good quality at a small file size.
- Are my files uploaded to a server?
- No. The extractor is WebAssembly and browser APIs running on your own machine. Nothing is uploaded, stored, or seen by us, and there is no server to send files to.
- Is it free, and do I need an account?
- It is free with no watermarks, no daily caps, and no sign-up. Drop a file, extract the audio, and download the result.
- Does extracting the audio reduce its quality?
- Extracting to WAV adds no quality loss beyond what was already in the MP4. Choosing MP3 or M4A applies lossy compression, so the file is smaller but the audio is re-encoded rather than copied exactly.