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FLAC at a glance
FLAC
Convert FLAC files with ConverterHQ using workflows tuned for audio compatibility, predictable output, and practical downstream use.
Category
Audio
Extensions
.flac
MIME types
audio/flac
Created
2001
Inventor
Josh Coalson
Status
active
AU at a glance
AU
Convert AU files with ConverterHQ using workflows tuned for audio compatibility, predictable output, and practical downstream use.
Category
Audio
Extensions
.au
MIME types
audio/basic
Created
1987
Inventor
Sun Microsystems
Status
active
Format comparison
| Feature | FLAC | AU |
|---|---|---|
| File type | Audio | Audio |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2001 | 1987 |
| Inventor | Josh Coalson | Sun Microsystems |
| Status | active | active |
| Primary use cases |
|
|
| Multitrack support | Not supported | Not supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use FLAC
- Your source file is already in FLAC.
- Preserve source expectations before exporting to AU.
- FLAC is commonly used in audio workflows.
When to use AU
- Your target workflow expects AU.
- Improve delivery compatibility with AU.
- AU is commonly used in audio workflows.
FAQs
Why convert FLAC to AU?
Convert to AU when preserving compatibility with older Unix or workstation software, educational assets, or historical multimedia archives.
In most present-day workflows the practical task is to decode AU content and move it to WAV, AIFF, or a modern compressed format.
Use AU only when downstream compatibility makes it necessary.
What changes when converting FLAC to AU?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting FLAC to AU?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.