CAVS to AU Audio conversion is the process of transforming audio or audio-containing CAVS files—often produced by certain video or proprietary container workflows—into the AU (Sun/NeXT) audio file format. This conversion extracts or transcodes the audio stream into a standardized .au container so it can be played back by legacy Unix-based players and many modern audio tools.
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Read guide →Drag your .CAVS file from your computer or use the browse function.
Confirm .au as the selected destination format.
Click "Convert" and download your converted .AU file once ready.
The MIME type for CAVS files varies depending on the codec used, but AU Audio uses the 'audio/basic' or 'audio/au' MIME type. CAVS files are often used in specific multimedia applications or proprietary systems, while AU format is common in Unix environments and supports codecs like PCM and μ-law. AU files store audio data with a simple header, facilitating easier processing and playback.
The AU Audio (.AU) format is commonly used for video. Understanding its characteristics can be helpful when converting to or from other formats like CAVS.
While specific technical details aren't available here, AU Audio files generally serve the purpose of storing video effectively within their domain.
Our online CAVS to AU converter offers a seamless solution for converting your CAVS files to AU Audio format. Whether you need better compatibility or want to use your audio files in different applications, our tool ensures quick and high-quality conversion without the need to install any software.
CAVS files typically store compressed audio data in proprietary formats, often limiting their compatibility. In contrast, AU Audio is a simpler, uncompressed or lightly compressed format widely supported on Unix and legacy systems. While CAVS may offer better compression, AU provides broader compatibility and easier use in professional audio editing.
Keep individual CAVS files under 250 MB for free conversions to avoid upload timeouts; larger files should be split or converted with a premium account.
To preserve audio quality, export AU as 16-bit PCM at the same sample rate as the source (e.g., 44.1 kHz) rather than downsampling during conversion.
For batch conversions, use a desktop tool or a queue-enabled web service to process multiple CAVS files sequentially and avoid browser timeouts.
Note format limitation: some CAVS containers use proprietary or uncommon codecs—if the audio codec isn’t supported, you may need to first transcode the audio to a standard codec (PCM/AAC) before making an AU file.
This converter made switching from CAVS to AU effortless and fast.
Emily R.
Audio Engineer
I love how easy it is to convert my files online without installing anything.
Mark D.
Podcaster
High-quality conversions every time, perfect for my audio projects.
Lisa M.
Music Producer
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Up to 250MB
If you need small file sizes, reduce sample rate and bit depth (e.g., 22.05 kHz mono 8-bit) but expect noticeable quality loss.