Video to WAV Converter — Extract Lossless Audio Online
A video to WAV converter extracts the audio track from a video file and saves it as a WAV file — the standard format for uncompressed, lossless audio. Unlike MP3, WAV preserves every sample of the original audio with no quality loss, making it the go-to format for audio editing, music production, and professional workflows.
Keynou's video to WAV converter runs entirely in your browser. Your video never gets uploaded to a server, and the extraction happens locally using FFmpeg compiled to WebAssembly.
WAV vs MP3: Lossless vs Lossy
The fundamental difference between WAV and MP3 is compression. WAV stores raw, uncompressed audio data — every sample recorded by the microphone is preserved exactly. MP3 uses psychoacoustic compression to discard sounds the human ear can barely perceive, reducing file size at the cost of permanent quality loss.
When to Choose WAV
- Audio editing and production — DAWs like Ableton, Logic Pro, and Pro Tools work best with WAV. Editing MP3s introduces generation loss with each processing step.
- Sound design — If you're extracting sound effects from video footage for use in games or film, WAV preserves the full dynamic range.
- Archival — WAV is a safe archival format. No compression means no degradation over multiple processing passes.
- Mastering — If the video contains the master audio track, extract it as WAV to preserve maximum fidelity for the mastering chain.
When to Choose MP3 Instead
If you just want to listen to the audio on your phone or share it with someone, MP3 is the better choice. A 3-minute WAV file is roughly 30MB; the same clip as a 192 kbps MP3 is about 4MB. For casual listening, use the video to MP3 converter instead.
Bit Depth Options
WAV files come in different bit depths, which determine the dynamic range and precision of the audio:
| Bit Depth | Dynamic Range | File Size (per minute) | Use Case |
|---|---|---|---|
| 16-bit | 96 dB | ~10 MB | CD quality, general editing |
| 24-bit | 144 dB | ~15 MB | Professional production, mastering |
| 32-bit float | 1528 dB | ~20 MB | Ultra-high-end recording, rescue |
16-bit is the standard for CD-quality audio and is sufficient for most editing workflows. 24-bit provides more headroom for processing — if you'll be applying effects, adjusting levels, or mixing, 24-bit prevents clipping and quantization artifacts. 32-bit float is overkill for most use cases but useful if the source audio has extreme dynamic range.
File Size Considerations
WAV's biggest drawback is file size. Because the audio is uncompressed, WAV files are roughly 10x larger than equivalent MP3s:
- 3-minute 16-bit WAV: ~30 MB
- 3-minute 24-bit WAV: ~45 MB
- 3-minute 320 kbps MP3: ~7 MB
- 3-minute 192 kbps MP3: ~4 MB
If storage is a concern but you need lossless quality, consider extracting to FLAC instead. FLAC is lossless like WAV but compresses to roughly 50-60% of the WAV file size. Use the audio converter to convert between WAV, FLAC, MP3, and other formats after extraction.
Supported Video Formats
The converter extracts WAV audio from all common video containers:
- MP4 — Most common, from phones and cameras
- MOV — Apple QuickTime, from iPhones and Macs
- AVI — Legacy Windows format
- MKV — Matroska, often used for high-quality video
- WebM — Google's web format
The tool reads whatever audio codec is embedded in the container (AAC, AC3, PCM, FLAC, etc.) and decodes it to uncompressed WAV at your chosen bit depth.
Browser-Based Privacy
Like all Keynou tools, the WAV converter processes your file locally in the browser. The video is loaded into your device's memory, FFmpeg WASM extracts and decodes the audio, and the resulting WAV file is offered as a download. No upload, no server processing, no third-party access to your content.
This matters for professionals working with confidential audio — business recordings, unreleased music, client footage — where uploading to a remote server isn't acceptable.
Step-by-Step: Extracting WAV from Video
- Open the video to WAV converter
- Select your video file (drag and drop or browse)
- Choose bit depth — 16-bit for general use, 24-bit for production
- Click convert — FFmpeg WASM extracts the audio locally
- Download the WAV file to your device
No signup, no watermark, no file size limits beyond your device's available memory.
Related Tools
- Video to WAV — Extract lossless WAV audio from video
- Audio Converter — Convert between WAV, MP3, FLAC, AAC, OGG
- Video to MP3 — Extract compressed MP3 audio for smaller files
Further Reading
- WAV — Wikipedia — Format specification and history
- FFmpeg Audio Resampling Guide — Bit depth and sample rate configuration
- MDN: MediaRecorder API — Browser audio recording reference
