AVI, Windows’ classic video
AVI is a 1990s Microsoft video format, common in old cameras and old files.
Strengths: Classic desktop players open it.
Limits: Browsers and phones do not play it, and it is usually large; here it is read with ffmpeg.
Video
Convert AVI to M4A
Turn your AVI files into M4A in seconds. Everything happens in your browser: nothing is uploaded to any server.
AVIM4A
Drag your files here
Or paste them with Ctrl+V. They never leave your device.
Why convert AVI to M4A?
Browsers and phones do not play it, and it is usually large; here it is read with ffmpeg. As M4A it sounds good at a small size and opens on iPhone, Android and Windows.
About the formats
M4A, Apple’s audio
M4A is AAC audio in an MP4 container: the format of iTunes, iPhone voice memos and many podcasts.
Strengths: Good quality at a small size, with tags and artwork, and it opens on Apple, Android and Windows.
Limits: Some old players or editing programs only accept MP3 or WAV.
How to convert AVI to M4A
- 1Drop your AVI files in the box, paste them or pick them from your device.
- 2Check that the target is M4A and open the options if you want to adjust it.
- 3Press “Convert” and download each M4A, or all of them in a ZIP.
Frequently asked questions
Is my AVI uploaded to a server to turn it into M4A?
No. The AVI to M4A conversion runs entirely in your browser, with code downloaded from this site and executed on your device. You can check it in the Network tab of the developer tools or by going offline after the page loads.
Can I extract only part of the AVI audio?
Yes: in the options set the start and end time, for example from 1:30 to 2:45, and only that clip is extracted.
Is there a size limit?
Up to 2 GB and 3 hours of video on desktop; on mobile, 500 MB and 30 minutes (AVI: 1 GB and 1 hour on desktop). If it is over, you are told before it starts and can trim it.
Can I convert several AVI files at once?
Yes. Drop as many AVI files as you like: several are converted at the same time, depending on your processor cores, and when they finish you can download each M4A or all of them in a ZIP.