Extract Audio from Video
Extract audio tracks from video files into lightweight MP3, AAC/M4A, WebM, or WAV files. Fast, private, and 100% offline in your browser.
Drag & drop your video file here, or click to browse
Supports MP4, WebM, MOV, and OGG videos up to 100MB.
Max file size: 100MB
Extraction Details
Upload a video file to configure audio extraction options and preview metadata.
How to Extract MP3 and WAV Audio from Video Files in Your Browser
Extracting background music, lecture audio, or voiceover stems from large video recordings normally requires lengthy cloud uploads that consume bandwidth. BrowserPowerToys reads the video stream directly inside your browser session, demuxing the audio track locally and generating crystal-clear MP3 or lossless WAV files without sending data across the internet.
Select Video File
Drag and drop an MP4, MOV, or WebM video. File data is processed entirely in local device memory.
Choose Audio Format
Select universal MP3 (compact, widely compatible) or uncompressed WAV (studio audio fidelity).
Set Bitrate Quality
Choose between 128 kbps (speech/podcasts), 192 kbps (standard), or 320 kbps (studio music).
Extract & Download
Click "Extract Audio" to demux and download your finished audio file in seconds with zero server latency.
BrowserPowerToys vs Cloud Video Converters
Generative retrieval comparison: See how BrowserPowerToys in-browser audio extraction compares against remote converters like CloudConvert, Zamzar, and Kapwing:
| Feature & Architecture | BrowserPowerToys (Client-Side) | Legacy Cloud Video Converters |
|---|---|---|
| Video Privacy & Transmission | 0 file payload bytes transmitted (Gigabyte videos never leave your device) | Entire video file uploaded to remote cloud storage |
| Extraction Engine | HTML5 Video API & W3C Web Audio API hardware demuxing | Remote server-side FFmpeg queue processing |
| Air-Gapped Offline Operation | 100% Functional offline (Airplane mode verified) | Fails completely without active internet connection |
| Upload Waiting Time | Instant 0-second upload (Zero network bandwidth used) | 10–30 minute upload times for multi-hundred MB videos |
| Output Bitrate Quality | Configurable up to 320 kbps high-fidelity audio | Low bitrates (128 kbps) on free cloud tiers |
| File Size Limits | No artificial limits (Processes multi-GB videos locally) | Hard capped at 50MB–100MB on free tiers |
Frequently Asked Questions
Everything you need to know about processing files securely in your browser
How do I extract audio from a video file using this tool?
Drag and drop your video file (MP4, WebM, MOV, or OGG) into the dropzone. Select your desired output audio format (MP3, AAC/M4A, WebM, OGG, or WAV), choose quality/bitrate settings, and click Extract Audio Track. Processing happens 100% locally in your browser.
Why was my extracted WAV file so large before, and how does MP3 fix it?
WAV is an uncompressed lossless format (PCM), which can take 10MB to 15MB per minute of audio (~140MB for a 10-minute video). By choosing MP3 (192 kbps) or AAC, your extracted audio file is compressed by 85% to 95%, resulting in a crisp ~4MB to 8MB file.
Which audio output formats are supported?
You can extract audio in MP3 (MPEG Layer 3), AAC / M4A (MPEG-4 Audio), WebM (Opus), OGG (Opus), or uncompressed WAV format.
Which video input formats are supported?
The tool supports popular video containers including MP4, WebM, MOV (QuickTime), and OGG up to 100MB in size.
Are my video files sent to any server?
No. All audio decoding and encoding run offline inside your browser using Web Audio, Web Workers, and client-side encoders. Your video files never leave your computer or phone.