Tools / File Converter / AVI to AU Converter

AVI to AU Converter

Convert AVI files to AU. Free, without uploading.

This tool converts AVI files to AU. AVI is Windows’ classic video container. Older players and some devices still want it; files are larger than with modern formats.

Sun/NeXT audio. Only the audio of the AVI video is kept and saved as AU; the picture is dropped. AU is lossless, so the audio keeps the quality it has in the AVI file.

Conversion runs on your device; your file is never sent to a server. The components download once on first use, and later conversions start right away.

How to use

1. Choose the AVI video, drag it in, or paste its link.
2. Choose the audio quality; optionally enter a start and end time.
3. Press "Convert" and download the AU file.

Frequently asked questions

Will audio quality drop when converting to AU?

No. AU is lossless.

Is there a file size limit?

No fixed limit; your device’s memory decides. Computers usually handle files up to 1–2 GB.

Is my file uploaded?

No. Your AVI file is converted to AU inside your browser.