PRIVATE BROWSER PROCESSING
Convert AVI to MP4 and stop carrying an old container forward
AVI files still turn up in archives, old cameras and legacy software. Convert the useful video into a modern MP4 before it reaches a browser, phone or upload system.
AVI to MP4
AVI survives because old files survive
AVI can contain many different codecs, including some modern browsers do not preview. FFmpeg WebAssembly still handles many of those files even when native preview is limited.
Privacy and limitations
Processing uses FFmpeg WebAssembly locally. The video is not uploaded by this tool. Closing or refreshing the page clears the working file. Speed depends on the browser, device memory, source codec, duration, and resolution, and tools that re-encode are not lossless.
Common questions
Can I just rename the file extension?
Usually not. Renaming does not change the container or codecs inside; this page performs a real conversion.
Is my video uploaded to DJAI?
No. The source file is read and processed in your browser on your device.
Why can the first run take longer?
The browser downloads an FFmpeg WebAssembly core of roughly 31 MB the first time processing is needed; caching can help later runs.
BUILD WITH DJAI
Want to build a tool like this one?
This tool runs entirely in the browser. Explore DJAI Academy’s practical building courses.