Convert MP4 to WAV.
Pull the soundtrack out of an MP4 video as an uncompressed WAV file, ready for an audio editor, a DAW or transcription.
Why WAV for editing
Audio editors, DAWs and many transcription and voice tools work best with uncompressed WAV. Extracting it once means every later edit starts from clean audio rather than re-compressing a lossy track.
What is extracted
The main audio track of the video is decoded and saved as PCM WAV. The video picture is dropped. The sample rate follows the source.
Size change
Expect roughly 10 MB per minute of stereo audio, often more than the whole MP4.
How it works
- 01
Upload your MP4
Drop a file or pick one from your device. Private by default.
- 02
Extract with ffmpeg
ffmpeg drops the video stream and decodes the audio to uncompressed PCM WAV.
- 03
Download
Grab your WAV.
Uncompressed WAV, no further loss
Opens in every audio editor and DAW
Private uploads, auto-deleted after 1 hour
No watermark, no signup to try
Open-source ffmpeg engine
Extracting WAV from MP4
This pulls the audio track out of your MP4 and encodes it as WAV; the video is discarded. WAV is lossless, so the audio is kept faithfully.
Need more than a conversion?
Send your audio or video to TranscriptAI to generate a transcript, summary, structured notes, flashcards, quiz questions or action items: automatically.
Common questions
Is it free?+
Yes. Convert MP4 to WAV free. No signup and no watermark. Free covers 10 server conversions a day, up to 100 MB a file. Pro removes the daily limit and raises the file limit to 2 GB.
Is my file private?+
Your file is uploaded to a private bucket, converted on our own engine, and auto-deleted after 1 hour. It is never sent to a third-party converter.
Is the audio quality improved?+
No, and none is lost either. The audio in an MP4 is usually AAC, which is decoded once into WAV. From then on you can edit and save without adding compression.
Why is the WAV larger than the video?+
WAV is uncompressed, about 10 MB a minute for CD-quality stereo, while the MP4 holds compressed audio. If you only want to listen or share, MP4 to MP3 is far smaller.
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