DIVX to AU Converter

Extract Sun/NeXT AU audio from DIVX video online

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DIVX to AU Extraction

Extract the audio from your DIVX video and wrap it in the Sun AU container — a quick online process for Unix audio needs.

Unix/Linux Compatible

AU is the native audio format for Sun Microsystems and Unix systems. Convert DIVX audio for direct use on these platforms.

Secure and Private

Uploaded DIVX files are deleted immediately. AU output files are purged from our servers automatically within 24 hours.

How to convert DIVX 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

DivX is a family of video codecs and a media container format developed by DivX, LLC. The project traces its roots to a hacked version of the Microsoft MPEG-4 v3 codec that circulated in the late 1990s, but the legitimate DivX codec launched in January 2001 as an open-source project called OpenDivX before transitioning to a proprietary commercial product. The codec is based on MPEG-4 Part 2 (ASP) compression and later versions incorporated H.264/AVC and HEVC support. DivX gained enormous popularity in the early 2000s for its ability to compress a full-length movie into a file small enough to fit on a single CD-ROM while maintaining watchable visual quality. This compression efficiency made DivX a defining format of the early internet era, when bandwidth and storage were scarce resources. The DivX Media Format (.divx) container adds features like interactive menus, chapters, subtitles, and alternate audio tracks, bringing DVD-like functionality to digital files. DivX certification became a common label on consumer electronics, with thousands of DVD players and other devices supporting DivX playback natively. The codec also pioneered quality-based variable bit rate encoding that allocates more data to complex scenes and less to static ones, resulting in consistent visual quality throughout a video.
Developer: DivX, LLC
Initial release: January 15, 2001
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 DIVX to AU?

AU is the standard audio format for Sun/NeXT systems and Unix platforms. Converting serves legacy Unix applications and web audio needs.

What plays AU files?

VLC, Audacity, SoX, and most Unix/Linux media players handle AU files natively. Some web browsers also support AU for legacy web audio.

Is AU a quality format?

AU supports various encodings from low-quality mu-law to full PCM. Quality depends on the encoding settings you choose before conversion.

Can I set the encoding type?

Yes — adjust encoding parameters and sample rate before conversion to produce AU output matching your Unix system requirements.

Does this work on Windows?

The converter runs in any browser on any platform. Upload your DIVX file from Windows, macOS, or Linux and convert to AU online.