MP4 to MP3 Converter
Extract audio from MP4 with MP3 selected by default, or switch to WAV, M4A, FLAC, or Opus before exporting. After extraction, you can trim the result by dragging the waveform handles left and right.
Loading Audio Engine (WASM)...
Need bulk audio extraction?
Medrea for macOS/iOS lets you batch extract audio from videos, convert to MP3 or other formats, and process everything locally with hardware acceleration.
Learn More about MedreaWhy use this tool?
Use it when you need a quick MP4 to MP3 workflow but still want the flexibility to export WAV, M4A, FLAC, or Opus from the same page.
The waveform editor makes light cleanup faster, especially when you only need to keep a specific segment from a longer video.
MP4 to MP3 FAQ
Is this only for MP4 files?
No. MP4 is the default workflow on this page, but the uploader also accepts MOV, WEBM, MKV, AVI, and M4V.
Can I export other formats besides MP3?
Yes. MP3 is selected by default, but you can switch to M4A, WAV, FLAC, or Opus before extracting.
How does waveform trimming work?
After extraction, the page decodes your audio locally, renders a waveform, and lets you drag the left and right handles to define a trim range before exporting again.
Are my files uploaded?
No. Video parsing, audio extraction, waveform generation, and trim export all run directly in your browser with FFmpeg and Web Audio APIs.