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 AAC
Turn your AVI files into AAC in seconds. Everything happens in your browser: nothing is uploaded to any server.
AVIAAC
Drag your files here
Or paste them with Ctrl+V. They never leave your device.
Why convert AVI to AAC?
Browsers and phones do not play it, and it is usually large; here it is read with ffmpeg. As AAC it sounds better than an MP3 of the same size.
About the formats
AAC, the successor to MP3
AAC is the lossy audio codec that replaced MP3; this file is “raw” AAC, without a container (ADTS).
Strengths: At the same size it sounds better than an MP3 and almost every device understands it.
Limits: Without a container it holds no artwork or tags, and some programs prefer M4A.
How to convert AVI to AAC
- 1Drop your AVI files in the box, paste them or pick them from your device.
- 2Check that the target is AAC and open the options if you want to adjust it.
- 3Press “Convert” and download each AAC, or all of them in a ZIP.
Frequently asked questions
Is my AVI uploaded to a server to turn it into AAC?
No. The AVI to AAC 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 AAC or all of them in a ZIP.