Convert MP4 to WAV — Free Lossless Audio Extractor
Extract lossless WAV audio from MP4 videos. Perfect for editing, podcasts, and music production. Free online converter — no quality loss.
Conversion settings — add a file to adjust
About MP4 files
An MP4 video stores its sound in compressed AAC. When you need that sound for editing, mixing, transcription tools or a DAW, a WAV file is often the better choice.
WAV is uncompressed PCM audio. Audio editors can cut and process it without decoding, and nothing is lost when you save it again during editing.
How we convert MP4 to WAV
- What we extract
- The first audio track of the MP4. The video stream is dropped.
- WAV format
- 16-bit PCM. The sample rate of the source is kept unless you choose 44.1, 48 or 96 kHz.
- Channels
- Stereo stays stereo. You can switch to mono in the options, which halves the size.
Common problems and fixes
The WAV is much larger than the MP4.
That is expected: WAV has no compression. Pick mono, or use MP3 if you do not need to edit the sound.
My editor expects 48 kHz audio.
Set the sample rate to 48 kHz in the audio options before converting, so the editor does not resample it.
The converter says there is no audio track.
The video has no sound stream. Check the original recording had its microphone turned on.
About MP4 to WAV Conversion
Extracting audio from MP4 video files as lossless WAV is essential for music producers, podcast editors, sound designers, and anyone who needs pristine audio quality for professional work. While MP4 videos typically contain compressed AAC or MP3 audio, converting to WAV decodes that audio into an uncompressed, lossless format that preserves every detail for further editing, mixing, and processing without introducing additional compression artifacts.
Our MP4 to WAV converter uses our media engine to decode the MP4's audio stream and output standard 16-bit PCM WAV files at the source sample rate or the one you choose. The process strips the video entirely, extracting only the audio data. Conversions complete in seconds — even for hour-long recordings — because audio processing is computationally lightweight compared to video encoding.
Why Convert MP4 to WAV?
Professional audio editing demands uncompressed formats. Digital audio workstations (DAWs) like Pro Tools, Logic Pro, Ableton Live, and Audacity work most efficiently with WAV files. Applying effects, EQ, compression, and other processing to already-compressed formats (like MP4's AAC audio) introduces generation loss — each re-encoding degrades quality slightly. Starting from WAV ensures your edits operate on the highest-quality source available.
WAV is the standard interchange format for audio production. Recording studios, broadcast facilities, film post-production houses, and podcast production teams use WAV as their working format. When you extract audio from an MP4 interview, lecture, or performance recording, WAV ensures maximum fidelity for the editing and mixing process.
Podcast workflows benefit enormously from WAV extraction. Interview recordings captured on video (Zoom, Teams, phone cameras) contain the audio you actually need. Extracting to WAV gives your podcast editor an uncompressed source file that withstands multiple rounds of editing, noise reduction, and processing before the final compressed MP3 or AAC export.