MP4 to MP3: get the audio out of a video
Lectures, songs, voice notes recorded as video: Morph saves just the sound, so the file is a fraction of the size.
How to do it
Open the video in Morph
MP4, MOV and most videos your device can play work.
Choose an audio format
The Convert wheel shows the audio formats your device supports next to the video ones.
Play it anywhere
The audio file is saved next to the video.
Where it works
- Windows MP3, M4A, WAV and FLAC built in; AIFF, OGG and OPUS with ffmpeg installed.
- Mac M4A, WAV and AIFF built in. MP3, FLAC, OGG and OPUS in the download from this site once ffmpeg is installed (Morph shows the one command to run). The Mac App Store version makes M4A, WAV and AIFF.
- iPhone and iPad M4A, WAV and AIFF. M4A plays everywhere MP3 does, including WhatsApp, Android and Windows.
- Android M4A, WAV, AIFF, FLAC, OGG and OPUS.
Free and open source. Everything runs on your device: no uploads, no account, no ads, and your originals are never changed.
Get Morph
Mac
macOS 14 or later, Apple Silicon or Intel. The App Store beta is on TestFlight; it's early and still has bugs.
Download for Mac Mac App Store betaAndroid
Android 10 or later. Out for everyone on Google Play around 11 November 2026.
Join the Google Play testiPhone and iPad
iOS 17 or later. On the App Store around 11 November 2026; try the beta now with TestFlight (expect a few bugs).
Join the TestFlight betaQuestions
Why M4A instead of MP3 on some devices?
MP3 encoding isn't built into macOS, iOS or Android. M4A (AAC) is built in, sounds as good or better at the same size, and plays on practically everything.
Can I convert MP3 to M4A or WAV too?
Yes. Audio files convert between the same formats.
Is the video uploaded?
No. Morph converts on your device and makes no network requests.