Convert AVI to MP4
Runs locally in your browser via a WebAssembly build of ffmpeg. Your file is never sent to a server.
- Choose a .avi file from your device.
- Click convert to MP4.
- Download the result.
Maximum file size: 100 MB. The first conversion loads a ~30 MB converter engine, once per visit. Nothing is uploaded - conversion runs on your device.
AVI vs MP4
AVI is an older Windows container still produced by some capture and screen-recording tools. MP4 is a widely supported video container; acceptance also depends on the video and audio codecs inside it.
Frequently asked
Why convert AVI to MP4?
AVI is an older Windows container still produced by some capture and screen-recording tools. MP4 is a widely supported video container; acceptance also depends on the video and audio codecs inside it. Converting between them is common when a file made for one use needs to work for the other.
Does this upload my file anywhere?
No. Conversion runs entirely on your device using a WebAssembly build of ffmpeg - the file never reaches a server.
Is there a file size limit?
Yes, 100 MB per file, to keep conversion reliable inside the browser.
Koldflux exports every clip in the right format automatically - no manual conversion step.
Automate this in Koldflux