MOV to AU Converter

Extract Sun/NeXT AU audio from MOV video files online

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Unix Audio Standard

AU is the native audio format for Sun and Unix systems. Extract MOV audio in a format that integrates directly with Unix tools and Java applications.

No Software Needed

The converter runs in your browser — no Unix tools or Java SDKs required on your machine. Convert MOV to AU from any operating system.

Secure Handling

MOV uploads are erased immediately after processing. AU downloads are removed from our servers within 24 hours for complete data privacy.

How to convert MOV 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

MOV is a multimedia container format developed by Apple Inc. and introduced in December 1991 with the launch of the QuickTime multimedia framework. As the native format of QuickTime, MOV pioneered many concepts that later influenced the ISO base media file format (MPEG-4 Part 12) and its derivatives, including MP4. The container uses a hierarchical atom (or box) structure where each atom holds specific types of data — from video and audio tracks to metadata, text, and timecode information. MOV supports an extremely broad range of codecs including H.264, HEVC, ProRes, Apple Intermediate Codec, AAC, and PCM, among many others. This codec flexibility, combined with features like multiple track support, reference movies, and edit lists, has made MOV a staple of professional video production. The ProRes codec from Apple, commonly delivered in MOV containers, is an industry standard for post-production and broadcast finishing. The format handles both compressed delivery-quality content and high-bit-rate production-quality footage with equal capability. Precise timecode and metadata handling make MOV particularly valued in workflows requiring frame-accurate editing and reliable exchange between production tools. MOV is natively supported across all Apple platforms and widely recognized by professional editing software on all operating systems, maintaining its relevance across decades of evolving video technology.
Developer: Apple Inc.
Initial release: December 2, 1991
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 MOV to AU?

AU is the standard audio format on Sun/Unix systems and is natively supported by Java. Convert when your project requires this specific format for compatibility.

What applications open AU files?

Audacity, SoX, Java multimedia APIs, and most Unix/Linux audio tools handle AU natively. VLC plays AU files on any operating system without plugins.

Does AU support different encodings?

Yes — AU supports mu-law, A-law, and linear PCM encoding. Choose the encoding that matches your target system requirements.

Is AU good for web audio?

AU was commonly used for early web audio (Java applets). While modern web audio favors MP3 and OGG, AU remains relevant for Java-based applications.

How large are AU files?

File size depends on the chosen encoding. Mu-law AU files are compact; uncompressed PCM AU files are similar in size to WAV recordings.

MOV to AU Quality Rating

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