Convert MP4 to WAV
Meeting recordings, lectures, voice memos trapped in video files — extracting the audio as WAV gives you a lossless file every editor and transcription tool accepts. This page runs the local audio extractor preconfigured for WAV output.
Your browser decodes the MP4's audio stream into raw samples and writes a standard 16-bit WAV. For recordings of private conversations, doing this locally instead of uploading to an extraction site is the entire point.
Loading tool…
This is Extract Audio From Video preconfigured for this task — open the full tool for every option.
How it works
Select a video (or audio) file.
The audio stream is decoded locally into raw samples.
Choose lossless WAV or compact WebM/Opus output.
The output's duration is verified against the source before download.
What the tool does
- Decodes any audio your browser can play
- Lossless WAV (16-bit PCM) output
- Compact WebM/Opus output for smaller files
- Handles audio-only inputs too (e.g. convert OGG to WAV)
How the result is verified
The exported file is re-decoded locally and its duration compared with the source audio within tolerance.
Frequently asked questions
Is WAV extraction lossless?
From the decoded audio, yes — the WAV contains exactly the samples your browser decodes from the MP4, with no further compression. Detail already lost to the video's AAC encoding can't be restored.
How big will the WAV be?
About 10 MB per minute for stereo at CD-quality rates. The tool estimates before you export and reports the true size after.
Does my recording get uploaded?
No. Decoding runs in your browser tab via its built-in media engine; the file never leaves your device.