Load a video and extract audio
No upload server is used; controls and exports stay in this browser.
Controls
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Choose a local video file first.
Audio is captured as local PCM samples during playback; WAV is best for lossless output.
Local preview
The local output will appear here.
Features & quick guide
Keep only the sound you need from a video
Use Web Audio API to play and capture a video soundtrack locally, then export WAV or MP3 without a server upload. Everything stays in the current browser tab.
3-step guide
- 1Choose a file
Load a browser-supported MP4/WebM file locally. - 2Set controls
Adjust the time, frame, speed or orientation controls. - 3Export locally
Render or capture, then download the Blob result.
Browser-only privacy
Video data, decoded frames and exports stay in memory or local Blob URLs in this tab.
Performance depends on device memory, browser codecs and video duration.
Frequently asked questions
Is the video uploaded?
No. The video uses a local object URL and PCM, WAV and MP3 are created locally.
Why does the video play during extraction?
The browser exposes decoded PCM samples to Web Audio while the media is playing.
Which should I choose, WAV or MP3?
WAV preserves PCM and is larger; MP3 is smaller for everyday sharing.