To convert MP4 to M4A, select or drop your .mp4 file above, check that M4A is chosen as the output, and click Convert. This conversion runs on our server, and your files are deleted 72 hours later.
What is an MP4 file?
MP4 – MP4 video. MP4 is the video format that plays everywhere: phones, browsers, TVs and social networks. It usually holds H.264 pictures and AAC sound. Converting makes a new file: the video is decoded and encoded again, so converting from a format that lost detail never brings it back.
MP4 Converter →What is an M4A file?
M4A – MPEG-4 audio (M4A). M4A is audio (usually AAC or Apple Lossless) in an MP4 file, the format of iTunes, Apple Music and iPhone voice memos. Converting makes a new file: the sound is decoded and written again, so converting from a lossy format never brings back what was lost.
M4A Converter →How to convert MP4 to M4A
- Click Select File, or drop your .mp4 files anywhere on this page. You can add several at once.
- Check that M4A is chosen as the output format. On this page it is picked for you.
- Click Convert. When a file has to go to our server, the button says Upload and convert instead.
- Click Download next to each file when it's done.
MP4 vs M4A: how they compare
| MP4 | M4A | |
|---|---|---|
| Layout | Moving pictures and sound | A stream of sound |
| Editable | In video editors | In audio editors |
| Created by | MPEG, 2001 | Apple, 2001 |
| Best for | Video that must play on any device | Music in iTunes and on iPhones |
Good to know
- The sound of the video is made into an M4A file; the pictures are left out. Only the first sound track is converted.
Frequently asked questions
Is converting MP4 to M4A free?
Yes. Everyone gets 25 free credits a day, with no account needed. Conversions on our server use one credit per started minute of work, so most cost a single credit. Credits reset at midnight UTC.
Are my MP4 files uploaded anywhere?
This conversion runs on our server, because converting video needs ffmpeg, which does not run in a browser. Your file is sent over an encrypted connection, and both it and the result are deleted 72 hours after the conversion. The server has no internet access while it works on your file.
How large can the MP4 file be?
Up to 1 GB per file. This conversion runs on our server, which accepts files up to that size.
Will the M4A look the same as the MP4?
Only the sound is kept: the pictures are left out, and the M4A is made from the first sound track.
Can I convert several MP4 files at once?
Yes. Add as many files as you like; they are converted one after another, and each one gets its own Download button.
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