How to Extract Audio from a Video? MP4 to MP3 Explained
Explains how to pull the soundtrack from MP4, MOV or WebM videos, common export formats (MP3/WAV/M4A), and the privacy benefits of fully in-browser processing.
Most video files (e.g. MP4) contain both a video track and an audio track. Extracting audio keeps only the soundtrack and re-encodes it into MP3, WAV, etc.
MP3 is small and widely compatible — great for music and sharing. WAV is near-lossless but much larger. M4A (AAC) is friendlier on Apple devices.
This site uses FFmpeg (WebAssembly) in your browser, so the video is never uploaded to a server — ideal for private material.
Large files use more memory. Keep a single file under ~200MB; if extraction fails, first check that the video actually contains audio.