NoCloud Media

Video tool

Extract Audio from Video

Pull a clean audio track out of any video. Runs entirely in your browser — nothing uploads.

How it works

  1. 1

    Drop your video

    MP4, MOV, WebM, MKV, AVI, or M4V — whatever you have. The file stays on your device.

  2. 2

    Pick an output format

    MP3 for sharing, WAV for editing, OGG for size, M4A for Apple devices.

  3. 3

    Extract in your browser

    NoCloud Media runs FFmpeg.wasm locally. No uploads, no accounts, no waiting on a server queue.

  4. 4

    Download the audio file

    Save the result. Your video never left your browser tab.

Why use Extract audio?

Private by design — your video stays on your device, so even sensitive recordings (interviews, meetings, private moments) can be extracted safely.

Format choice matters — we give you four outputs so you can pick the right trade-off between quality, compatibility, and file size for your use case.

Works on any device with a modern browser. No desktop app, no command line, no FFmpeg install needed.

Common use cases

  • Extract a podcast from a video recording to distribute as audio-only
  • Pull audio from an interview for transcription
  • Save the soundtrack of a music video as a lossless WAV
  • Convert a screen recording into an M4A voice memo
  • Grab background music from a tutorial video
  • Archive audio from old camcorder MOV files as MP3

About MP4 and MP3

Video containers like MP4, MOV, and MKV bundle one or more audio streams alongside the video. Extracting audio means reading the container, demuxing the audio stream, and re-encoding it into a standalone audio file (or copying it if formats match). MP3 and M4A are lossy — small files, good enough for most listening. WAV is lossless PCM — big files, bit-perfect quality for editing. OGG (Vorbis) is an open, lossy format that often produces smaller files than MP3 at comparable quality. NoCloud Media uses FFmpeg.wasm so every format and codec combination runs locally in your browser.

Frequently asked questions

Is my video uploaded to a server?
No. NoCloud Media extracts audio entirely in your browser using WebAssembly. Your video file never leaves this tab.
Which output format should I pick?
MP3 is the safest default — plays everywhere, small files. WAV if you plan to edit the audio later (no quality loss). OGG if you want MP3-like quality at smaller sizes and your target devices support it. M4A if you're on the Apple ecosystem.
What if my video has no audio track?
Extraction will fail and you'll see an error. Some silent-only recordings or screen captures genuinely have no audio stream; nothing to extract.
What's the maximum video size I can process?
It depends on your browser's available memory. Files up to 500MB work smoothly on most devices; files up to around 2GB may work on desktop browsers with enough RAM.
Does WAV actually sound better?
Only up to the quality of the original audio track in the video. If the source is already a 128 kbps AAC, saving as WAV gives you a bigger file that sounds the same. WAV wins when the source was lossless or when you plan further editing.
Which browsers are supported?
Chrome, Edge, Firefox, and Safari 15+. We require WebAssembly and SharedArrayBuffer, both standard in modern browsers.

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