MP4's audio is usually lossy AAC, so WAV won't recover lost detail — it just extracts the track to uncompressed PCM for easier editing.
About MP4
Common video container format
MP4 is the most widely used video container, bundling video, audio (usually AAC), and subtitles together; this tool extracts the audio track and converts it to common audio formats.
- Excellent compatibility — plays on nearly every device and platform
- Requires extracting the audio track first; the full video file is much larger than the audio alone
About WAV
Uncompressed lossless format
WAV typically stores audio as uncompressed PCM, preserving the exact original signal. It is ideal for editing and professional use, but produces large files.
- Lossless and uncompressed
- Simple structure, easy to edit
- Large file size, not ideal for streaming
MP4 to WAV FAQ
Will converting MP4 to WAV lose quality?
MP4 is already a lossy format, so converting to lossless WAV introduces no additional quality loss — existing compression artifacts remain but nothing new is degraded.
Will the file size change after conversion?
Converting to a lossless format (WAV) usually increases size, while converting to a lossy format (MP3, AAC) usually decreases it, depending on the chosen bitrate and sample rate.
How do I batch convert MP4 to WAV?
Just drop multiple MP4 files in; they are converted to WAV one by one via a queue. You can download them individually or as a single ZIP.