How to use it
- Drop your MP4 video onto the page.
- Tick Mono if you only need speech.
- Click Convert to WAV and save the audio.
Why extract audio as WAV?
When you plan to work on a video's sound, WAV is the safest format: it's uncompressed, so editing, noise reduction or mastering won't stack extra compression artifacts, and every audio program opens it. Common uses: cleaning up the audio of an interview, sending dialogue to a transcription service, sampling a sound, or syncing audio in a separate editor.
You get 16-bit, 44.1 kHz WAV. The picture is dropped; only the soundtrack is saved. A one-hour video gives about 600 MB of stereo WAV (300 MB mono), so for simple listening an MP3 is more practical.
Supported videos and privacy
MP4 and M4V files work in all modern browsers, provided the audio track uses a codec the browser can decode (AAC, the norm for MP4, is supported everywhere). The video is decoded on your device and never uploaded, so even large files start immediately.
Very long or large videos need a lot of memory, because the whole soundtrack is decoded at once. If a phone struggles, use a computer.
Frequently asked questions
Does this keep the video?
No. Only the soundtrack is saved, as a WAV file.
Can I convert MOV or WebM to WAV?
This page accepts MP4 and M4V files. For MOV, WebM or MKV, the MP3 converter extracts the soundtrack as MP3.
How big will the WAV be?
About 10 MB per minute of stereo audio, or 5 MB per minute in mono.
Last updated: November 12, 2026