Extract Audio from Video
Pull the audio track out of any video and save it as MP3, M4A or WAV, in your browser. Free, private, no signup or upload.
About the Extract Audio from Video
This free tool extracts the soundtrack from a video and saves it as an audio file — perfect for turning a talk or lecture into an MP3 for your phone, grabbing music or a voice-over, or archiving the audio from a recording. You choose the output format and the tool discards the video entirely.
Extraction happens in your browser using FFmpeg WebAssembly, so your video is never uploaded. The engine (about 30 MB) downloads from a CDN on first use and is cached afterwards, so the first extraction is the slow one. You can save as MP3 or M4A (compressed) or WAV (uncompressed) depending on what you need.
Because it only reads the existing audio track, the tool cannot improve on the quality that is already in the video — but it will not degrade it noticeably at a high bitrate either. Videos up to 100 MB are supported.
How to Use the Extract Audio from Video
- 1Choose a video file (MP4, MOV, WebM, MKV and more), up to 100 MB.
- 2Pick the audio format — MP3, M4A or WAV.
- 3For MP3/M4A choose a bitrate; 192 kbps is a good default.
- 4Click Extract Audio, preview and download the file.
Frequently Asked Questions
Is my file uploaded to a server?
No. All processing runs in your browser using FFmpeg compiled to WebAssembly. Your file never leaves your device — only the converter engine is downloaded, once.
Why is the first run slow?
The first time you use any converter here, the browser downloads the FFmpeg core (about 30 MB) from a CDN and compiles it. It is then cached for the session, so later runs are much faster.
Which audio format should I pick?
MP3 is the most compatible for phones and players. M4A (AAC) is slightly more efficient. WAV is uncompressed and lossless — larger, but best if you plan to edit the audio further.
Will the audio quality improve?
No. Extraction copies or re-encodes the audio already in the video, so it cannot add quality. At a high bitrate the result is essentially indistinguishable from the source audio.
Is there a file size limit?
Yes, 100 MB per file. Because everything runs in your browser's memory, very large files can be slow or run out of memory. Trim long clips first if you hit the limit.