AVI to MP4

AVI to MP4 Converter

Convert AVI videos to MP4 locally so they are easier to upload, preview, and edit.

AVI conversion workspace

Move older AVI clips into a more modern MP4 container.

Loading conversion engine...

How it works

1 Upload an AVI file from your device.
2 Let the browser encode an MP4.
3 Download the finished video.

FAQ

Is my file uploaded anywhere?

No. The conversion runs in your browser with WebAssembly, so the selected file stays on your device.

Why can conversion take a while?

Large videos need to be decoded and encoded locally. Keep the tab open while the browser finishes the export.

Does the tool add a watermark?

No. The exported file is watermark-free.

Why did my old AVI fail?

Some very old AVI codecs may not be available in the browser build of FFmpeg.

Want professional polish?

The browser tools are great for quick format work. Aufzeichna's desktop app is built for polished screen recordings with smooth cursor motion, cinematic zoom, and export control.

Check out the desktop app