MP4 to MP3
Keep the sound, drop the picture.
Your file
Drop a file here, or click to choose
It stays on this device. Nothing is sent anywhere.
Settings
What actually happens
An MP4 holds a video stream and an audio stream side by side. This discards the video, decodes the audio, and re-encodes it as MP3. That is why it finishes far faster than a video conversion: there are no pictures to process.
If you would rather not re-encode at all, choose M4A on the extract audio tool. Most MP4s already hold AAC, so M4A is the closest thing to lifting the audio out untouched.
Common questions
Is MP3 the best choice?
It is the most compatible. M4A keeps more quality at the same size, and is the better pick if everything you use supports it.
Can I convert several MP4s at once?
Not yet, one file per run.