Extract Audio from Video
Pull the soundtrack out of an MP4, MOV or WebM video as MP3 or WAV.
Select a video file
Pull the soundtrack out of a video (MP4, MOV, WebM, MKV) as MP3 or WAV. Runs in your browser — works best in Chrome and Safari.
Click to choose, or drop a file here
About extracting audio from a video
This pulls the soundtrack out of a video file and saves it as MP3 or WAV — the "mp4 to mp3" job — without uploading the video. The browser decodes the video's audio track directly (the same mechanism a `<video>` element uses to play sound), and the decoded samples are encoded to MP3 or WAV in the page. The video's picture is never touched or saved.
Because it relies on the browser's built-in media decoder, support depends on the browser: Chrome and Safari read the audio in MP4, MOV, WebM and most MKV files reliably; Firefox handles the common cases but can fail on some codecs, and when it does the tool says so plainly rather than producing a broken file.
The audio is decoded fully into memory, so a short clip or a 1080p file is fine, but a multi-gigabyte 4K video may not fit. There's no transcoding of the video and no ffmpeg — just the audio track, extracted and re-encoded locally.
Supported files
Accepts MP4, MOV, WebM and MKV video. Produces an MP3 or a 16-bit WAV of the audio track only.
Is my file uploaded?
No. The browser decodes the audio track on your device and the audio file is built there — the video never leaves your computer.
Common problems
- "Couldn't decode this file's audio" in Firefox
- Firefox can't read every codec. Try the same file in Chrome or Safari.
- Nothing happens on a huge 4K file
- The audio is decoded into memory and a very large file may not fit. Trim the video first.
How to Extract Audio from Video
- 1
Add the video
Drop in an MP4, MOV, WebM or MKV file — it stays on your device.
- 2
Pick a format
Choose MP3 or WAV for the extracted soundtrack.
- 3
Extract and download
Click Extract audio and save the audio-only file.
Related PDF tools
Extract Audio from Video — frequently asked questions
Is my video uploaded?+
No. The browser decodes the video's audio track locally and the audio file is built on your device — the video never leaves it.
Which browsers work best?+
Chrome and Safari decode MP4/MOV/WebM audio reliably. Firefox support is partial — if it can't read the track, the tool tells you clearly.
Does it re-encode the video?+
No — it only reads the audio track and writes it out as MP3 or WAV. The video itself is untouched and not saved.
What about large video files?+
The audio is decoded into memory, so a multi-GB 4K video may not fit. Shorter clips and 1080p files are fine.
Do you upload my files to a server?+
No — every tool here processes your files entirely on your device, and nothing is uploaded to a server. The only exception is the AI tools, which send the extracted text (not the file) to Claude to do their work.
Is there a file size limit?+
There's no artificial limit we impose, but since processing happens in your browser, very large files (500+ MB or 1,000+ pages) are limited by your device's memory rather than by us.
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