WMV to AU Converter

Switch from WMV to AU effortlessly online

Drop files here. 1 GB maximum file size or Sign Up
to
Facebook Amazon Microsoft Tesla Nestle Walmart L'Oreal

WMV to AU Online

Transform your WMV content into AU directly in the browser. No desktop software, no complicated setup.

Data Safety First

Files are processed securely and deleted after conversion. Nothing lingers on servers — your privacy is fully protected.

Cloud-Powered Engine

The entire conversion runs on remote servers — your device stays fast and unburdened during the WMV to AU process.

How to convert WMV to AU

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose au or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your au file right afterwards

About formats

WMV (Windows Media Video) is a family of video codecs and associated file format developed by Microsoft, first introduced in 1999 as part of the Windows Media framework. The format encompasses several codec generations, from the original WMV 7 through WMV 9 (also standardized as VC-1 by SMPTE under the 421M specification). WMV files are typically contained within the ASF (Advanced Systems Format) wrapper and use the .wmv extension to indicate video content. WMV 9/VC-1 achieved compression efficiency comparable to early H.264 implementations, delivering good visual quality at moderate bit rates and earning adoption for HD DVD and Blu-ray disc content as an approved codec. The format was deeply integrated into the Windows operating system, Windows Media Player, and server-side streaming infrastructure, making it a natural choice for enterprise media delivery, corporate training videos, and Windows-centric web content throughout the 2000s. WMV supports features including interlaced video, multiple bit rate encoding for adaptive streaming, and digital rights management through Windows Media DRM. The Silverlight platform also used WMV as its primary video format for rich internet applications and streaming services. While the industry has largely moved to H.264 and HEVC for most applications, WMV remains present in legacy enterprise content management systems, archived media libraries, and workflows tied to the Windows Media ecosystem.
Developer: Microsoft
Initial release: 1999
AU is an audio file format introduced by Sun Microsystems for its Unix workstations and the NeXT platform. It features a minimal 24-byte header specifying data offset, size, encoding type, sample rate, and channel count, followed by the audio payload. AU supports numerous encodings, including uncompressed linear PCM at various bit depths, mu-law and A-law companding (logarithmic compression used in telephone systems), and several ADPCM variants. This versatility made AU a workhorse across early Unix environments, web audio (Java applets defaulted to AU), and telephony applications. One advantage is simplicity: the compact header and straightforward structure make it trivial to parse, generate, and stream programmatically. The built-in mu-law option provides another benefit, delivering reasonable voice quality at just 8 KB per second — half the rate of 16-bit uncompressed audio — invaluable when storage and bandwidth were scarce. Although modern formats have largely supplanted AU in consumer applications, it retains a foothold in scientific computing and audio processing pipelines where minimal overhead and reliable cross-platform behavior are valued.
Developer: Sun Microsystems
Initial release: 1992

Frequently Asked Questions

Why convert WMV to AU?

WMV, Microsoft's Windows Media Video format, can be hard to play across platforms. Switching to AU gives you cross-platform Unix audio support.

How do I open an AU file?

For AU playback, try Audacity, SoX, or most Unix-based audio utilities. All of these support the format natively or with minimal setup.

What devices can play AU?

AU playback requires compatible software on your desktop or laptop. Check the recommended apps above to find the right player for your system.

Is any software installation required?

No. The entire WMV to AU conversion runs in your browser via convertio.tools. Nothing to download or install on your machine.

Can I convert multiple WMV to AU at once?

Absolutely. Upload several WMV files and convert them all to AU in one batch — each processes independently.

WMV to AU Quality Rating

5.0 (2 votes)
You need to convert and download at least 1 file to provide feedback!