Convert MKV to AU

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

Ready to switch from mkv to au? Drag your files into the converter and download the results immediately. MKV Video is best described as open-source matroska container supporting unlimited tracks and features, primarily serving high-quality video archiving, media centers and multi-language content. AU Audio takes over where MKV Video falls short: simple format with wide Unix/Linux tool support. This conversion bridges two ecosystems: Matroska.org's MKV Video and Sun Microsystems's AU Audio. Xonvert automatically detects your source format — just drop any file and the converter configures itself.

Why Choose AU Format for Your MKV Files?

There are strong reasons to convert MKV to AU:

Quality preservation: Converting from MKV Video to AU Audio maintains bit-perfect quality with no data loss.

Hardware acceleration: AU Audio benefits from hardware-accelerated decoding on most modern devices, ensuring smooth playback and rendering.

Web optimization: AU Audio is better suited for web delivery, loading faster and using less bandwidth than MKV Video.

Streaming support: AU Audio is well-suited for streaming and progressive loading, making it ideal for web and mobile delivery.

Platform requirements: Many platforms and services specifically require AU Audio format, making this conversion essential for submissions and uploads.

MKV and AU Side by Side

FeatureMKVAU
Full NameMKV VideoAU Audio
CategoryVideoAudio
CompressionLossyLossless
Key Strengthsupports virtually any audio/video codec with unlimited trackssimple format with wide Unix/Linux tool support
Key Weaknessnot universally supported on TVs, mobile devices and game consolesno compression options, limited metadata
Primary Usehigh-quality video archivingUnix system sounds
DeveloperMatroska.orgSun Microsystems
Year Released20021980s

The MKV to AU Process Explained

Converting MKV to AU with Xonvert is straightforward:

1. Choose files — Click the upload area or drag MKV files into the converter zone. Multiple files accepted.
2. Preview — Xonvert shows file names, sizes, and a thumbnail (where applicable) before processing.
3. One click — Press the Convert button. The WebAssembly engine processes your files at near-native speed.
4. Save results — Each AU file downloads individually, or choose "Download All" for a ZIP archive.

Conversion Quality Deep Dive

Quality in this conversion depends primarily on your source file. A high-quality MKV Video input produces an excellent AU Audio output. Since the target format is lossless, output quality matches your input exactly. MKV Video encodes data using perceptual compression that prioritizes human perception. AU Audio prioritizes exact data preservation. The conversion maps between these approaches intelligently. MKV Video's known limitation — not universally supported on TVs, mobile devices and game consoles — is resolved when converting to AU Audio, which offers simple format with wide Unix/Linux tool support.

Extracting audio from MKV Video video to AU Audio format strips the video track and saves only the audio content. This is perfect for extracting music from music videos, saving podcast audio from video recordings, or creating audio-only versions of lectures and presentations. The audio quality depends on the original video's audio track bitrate and codec.

Important: Converting from lossy MKV to lossless AU does not restore previously discarded data. The output perfectly preserves your current file quality without adding further degradation, but quality lost during the original MKV encoding cannot be recovered.

When This Conversion Matters

Common scenarios for MKV to AU conversion:

Personal organization — Standardize your file collection by converting all MKV files to AU, making everything consistent and easy to manage.
Batch processing — Convert entire folders of MKV files to AU using Xonvert's batch mode.
App development — Mobile and web apps may require AU assets. Convert your MKV source files during the build process.
Archiving content — Convert MKV files to AU for long-term, standardized storage.
Data migration — Migrating between systems often requires format conversion. MKV to AU bridges legacy and modern platforms.
Web publishing — AU files are better optimized for websites, loading faster and using less bandwidth.

Common Questions About MKV to AU

What happens to my files after conversion?
Nothing — your files exist only in your browser's memory during conversion. Once you close the page, all data is cleared. No files are stored anywhere.
What is MKV format?
MKV Video is Open-source Matroska container supporting unlimited tracks and features. It is primarily used for high-quality video archiving, media centers and multi-language content. Open-source container developed by the Matroska project
Will the conversion strip my EXIF or metadata?
Xonvert preserves metadata (EXIF, XMP, ID3, etc.) when the target AU format supports it. You can optionally strip metadata in the settings for smaller, cleaner output files.
Does the conversion preserve metadata?
Xonvert preserves compatible metadata fields when converting between formats. Some format-specific metadata may not carry over if the target format doesn't support it.
Can I share the converted AU file directly?
Yes. After conversion, you can download the AU file and share it via email, messaging apps, cloud storage, or any other method you prefer.
Does converting MKV to AU change the resolution?
No. The original resolution is preserved by default. You can optionally resize in the settings panel if you need different dimensions.
Do I need to install any software?
No installation required. The converter runs entirely in your web browser. No plugins, extensions or desktop apps needed.

Related Conversions

© 2026 Xonvert. All rights reserved.