Dedicated processing
A background Worker keeps intensive audio work away from the interface.
Extract audio from video
Runs locally in your browser. No upload, with clear control over audio quality.
Video source
VIDEO_IN00:00:00
Output audio
Select a video to estimate the size
Choose a video file to start.
- 1
Read video
Read the chosen video and its media information.
- 2
Extract track
Locate the primary audio track in the video.
- 3
Encode export
Create the selected audio format locally.
- 4
Save to device
Download the completed audio file.
Why VDA Media Lab
A focused audio export tool, built for privacy.
Streamed local storage
Temporary output is written to OPFS instead of occupying your tab's memory.
Your files stay yours
No upload queue, account requirement, or server-side copy of your media.
Choose your audio quality
Pick an MP3 bitrate for the balance you want, or export a compatible M4A audio track when possible.
MP3 or M4A output
Export a widely compatible audio file for listening, editing, or sharing.
Ready in your browser
Use the tool directly in modern browsers with WebCodecs support—no desktop app or account required.
Common questions
Before you extract
The details that matter before your first export.
No. Your video and audio are handled inside your browser. VDA does not send them to our servers.