MP4 to WAV
Free online lossless WAV audio extraction from MP4. Supports MP4, MKV, WebM, and MOV input. Fully browser-based — files never leave your device, complete privacy guaranteed.
Privacy Protection
All processing is done locally in your browser. MP4 video files are never uploaded to any server, keeping your data fully private.
Fast Extraction
WebCodecs technology with browser hardware acceleration — fast WAV extraction from MP4, no upload needed
Lossless Output
Standard PCM WAV output, compatible with all professional audio editing software and post-production workflows
Drag and drop video files here
or
Supports MP4, MKV, WebM, MOV
Extract MP4 to WAV in Three Steps
Upload Your MP4 File
Click or drag an MP4, MKV, WebM, or MOV file into the upload area. Up to 2 GB supported.
One-Click Extract
WAV is a lossless format with no compression settings — just click Extract
Extract & Download
Click Extract, then download the WAV file — all in the browser, no sign-up required
Common Use Cases for MP4 to WAV Conversion
Video Scoring and Post-Production
Extract background music or speech recordings from MP4 as WAV and import into Premiere Pro, DaVinci Resolve, or other video editors as audio material. WAV offers the best compatibility with professional software and eliminates import failures caused by format issues.
Professional Audio Editing
Extract audio from tutorial videos, concert recordings, or interviews as WAV and import into Adobe Audition, Audacity, or Logic Pro for noise reduction, mixing, and EQ. WAV does not accumulate compression loss on repeated saves — ideal for multi-step processing workflows.
Sound Effects for Games and Applications
In Unity, Unreal Engine, and iOS/Android development, WAV is the standard format for sound effects. Extract sounds from demo videos or tutorials as WAV and import into your development tools for the lowest playback latency — especially important for game audio that requires precise timing.
Professional Archiving and Format Compatibility
Archive the audio content of important videos separately in WAV format. WAV is an archival-grade format independent of specific codecs — any software will still be able to open it decades from now.
WAV vs. MP3: When Should You Choose WAV?
| Comparison | WAV (lossless) | MP3 (lossy compression) |
|---|---|---|
| Audio quality | Uncompressed, full audio data retained | Lossy compression, nearly indistinguishable at high bit rates |
| File Size | Large — about 10 MB/min (44.1 kHz stereo) | Small — about 1–3 MB/min (128–320 kbps) |
| Editing Compatibility | Natively supported by all professional audio and video software | Some professional software requires extra decoding steps on import |
| Re-processing | Can be edited repeatedly without accumulating loss — ideal for cutting and mixing | Re-compressing adds cumulative quality loss, not suitable as an editing source |
| Use Cases | Professional production, video soundtracks, game audio, long-term archiving | Everyday listening, sharing, platform uploads, phone storage |
Supported input formats
- MP4 — the most common video format, used for screen recordings, camera footage, and downloads
- MKV — popular container for HD movies, supports multiple codecs
- WebM — the standard web video format, commonly downloaded from YouTube
- MOV — Apple QuickTime format, the default for iPhone videos
Technical Notes
VideoKit's MP4 to WAV converter uses the WebCodecs API to decode audio tracks from MP4/MKV/WebM/MOV files directly in the browser and package them into a standard WAV file in uncompressed PCM format. The entire process runs locally — no video data is ever sent to any server.
The output WAV file uses standard PCM encoding and is fully compatible with major audio applications on Windows, macOS, and Linux. The sample rate and channel count match the source video audio track, ensuring all audio characteristics are faithfully preserved.
Frequently Asked Questions
How do I extract WAV audio from an MP4 video?
Upload the MP4 file, click "Extract WAV Audio", then download the result. No software to install, no files uploaded to any server.
What is the difference between MP4 to WAV and MP4 to MP3?
WAV is a lossless format — files are large but retain full audio quality, making it ideal for editing. MP3 is lossy compression — smaller files suited for listening. Choose WAV if you need to edit the audio; choose MP3 if you only need to listen.
Which video formats are supported as input?
The major video formats are supported — MP4, MKV, WebM, and MOV — so WAV audio can be extracted from video files of any origin.
Will my files be uploaded to a server?
No. All processing is done locally in your browser. Your video never leaves your device.
What is the quality of the extracted WAV?
The AAC audio track embedded in the MP4 is decoded and packaged into WAV in PCM format, preserving all original audio information; the sample rate matches the source.
Why is the WAV file larger than the MP4?
WAV is uncompressed PCM; the data volume per second far exceeds that of a compressed audio track. This is inherent to the format: the trade-off is file size; the benefit is lossless quality and editing compatibility.
Which software supports WAV format?
Audacity, Adobe Audition, Logic Pro, Pro Tools, Premiere Pro, DaVinci Resolve, Unity, Unreal Engine, and more all support WAV natively.
What's the Maximum MP4 File Size Supported?
Video files up to 2 GB are supported. Because WAV output can be large, a device with sufficient memory is recommended for processing longer videos.