Online Video to Audio Extractor

Online Video to Audio Extractor

The Video to Audio Extractor by Toolshu is a powerful, browser-based tool that lets you extract audio tracks from video files without installing any software. All processing happens locally on your device using WebAssembly-powered FFmpeg — your files never leave your browser, ensuring complete privacy.

Supported Input and Output Formats

This tool accepts a wide range of video input formats, including MP4, MOV, AVI, MKV, WebM, FLV, WMV, TS, M2TS, M4V, 3GP, RMVB, VOB, OGV, MPEG, and more — covering virtually every common video type you might encounter.

Supported audio output formats:

• MP3 — Most compatible lossy format, ideal for everyday listening and sharing
• AAC — Preferred on Apple devices, better quality than MP3 at the same bitrate
• M4A — AAC wrapped in an MPEG-4 container, commonly used in iTunes
• WAV — Lossless PCM format, large file size, best for audio editing
• FLAC — Lossless compression, preserves original quality with smaller files than WAV
• OGG — Open-source lossy format, popular for web and game audio
• AIFF — Apple's lossless format, widely used in professional audio production

Audio Quality Options

Four quality presets are available to suit different needs:

• Highest: Maximum bitrate or lossless settings, ideal for archiving or professional use
• High: The best balance of quality and file size for everyday listening (default)
• Medium: Reduced bitrate to save storage space, suitable for casual playback
• Low: Smallest file size, best for voice content or low-bandwidth scenarios

How to Use

1. Click the upload area or drag and drop your video files onto the page
2. Add multiple files at once for batch processing
3. Select your desired output audio format and quality in the control panel
4. Click "Start Extraction" and wait for the browser to process locally
5. Preview extracted audio directly on the page, then download individually or as a ZIP archive

Key Features

• 100% Local Processing: Powered by WebAssembly FFmpeg — no file uploads, no servers
• Batch Processing: Add multiple files and process them automatically in sequence
• In-Browser Preview: Play extracted audio right in the browser before downloading
• Memory Recovery: Automatically restarts the FFmpeg engine if memory issues occur during large file processing
• ZIP Download: Download all extracted audio files as a single ZIP archive with one click
• Free & Unlimited: No file count limit, no watermarks, completely free

Frequently Asked Questions

Q: Are my video files uploaded to a server?

No. All processing is done entirely in your browser using WebAssembly technology. Your video files are never sent to any server, keeping your data completely private.

Q: What is the maximum supported file size?

There is no hard file size limit, but performance depends on your browser's available memory. We recommend keeping individual files under 2GB, and limiting batches to around 5 files at a time to avoid out-of-memory errors.

Q: Is the extracted audio identical to the original video's audio track?

When using the "Highest" quality setting or lossless formats (WAV, FLAC, AIFF), the extracted audio is indistinguishable from the original. For lossy formats (MP3, AAC, OGG), quality depends on the selected bitrate preset.

Q: Can I process multiple videos at once?

Yes. You can select multiple files when uploading or drag and drop files in multiple batches. All files are queued and processed automatically one by one, with a ZIP download option at the end.