Does this tool support drag and drop?

Absolutely. Drag files directly from your file manager onto the converter area. You can also click to browse, or paste from clipboard.

Can I adjust conversion quality settings?

Yes. The settings panel lets you control output quality, resolution and format-specific parameters. Default settings are optimized for best results.

What's the best quality setting for MP4 to AU?

AU is lossless, so quality settings primarily affect encoding speed rather than output fidelity. The default works perfectly.

Can I convert MP4 to AU on Linux?

Yes. Xonvert works in any modern browser on any operating system — Linux, Windows, macOS, ChromeOS, and mobile platforms all supported.

AU Audio is Sun/Unix audio format for basic audio on Unix systems. It is primarily used for Unix system sounds, telephony and basic audio processing. Originally for Sun Microsystems workstations

Is Xonvert open source?

Xonvert uses open-source conversion libraries (FFmpeg, libvips, etc.) compiled to WebAssembly. The conversion engine is transparent and trustworthy.

Can I use Xonvert offline?

Yes! Once the converter page has loaded, it works without an internet connection. All conversion logic runs locally in your browser.

Convert MP4 to AU

Fast, free, and secure MP4 to AU conversion. No registration required.

mp4

Video

Fast, free, and secure MP4 to AU conversion. No registration required.

Drag & drop your file here

or click to browse

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Related Conversions

High Quality

Maintain maximum quality during conversion

Fast Processing

Convert files in seconds with our optimized engine

Secure & Private

Files automatically deleted after conversion

How to Convert MP4 to AU

Upload MP4 File

Click the "Select File" button to upload your mp4 file from your device.

Start Conversion

Click the "Convert" button to instantly start converting to AU.

Download AU

Download your converted au file immediately after processing.

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