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AIFC at a glance
AIFC
Convert to AIFC when maintaining compatibility with legacy Mac, sampler, or media workflows that explicitly expect compressed AIFF-family files.
It is useful for archive migration and recovery of older multimedia assets.
For new distribution or production pipelines, AIFF, WAV, or M4A are usually more practical.
AU at a glance
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.
Format comparison
| Feature | AIFC | AU |
|---|---|---|
| File type | Audio | Audio |
| Extensions |
|
|
| MIME type |
|
|
| Compression / quality | depends | depends |
| File size characteristics | medium | medium |
| Compatibility | broad | broad |
| Editability | limited | limited |
| Created year | 1988 | 1987 |
| Inventor | Apple | Sun Microsystems |
| Status | active | active |
| Primary use cases |
|
|
| Common software |
|
|
| Archival suitability | moderate | moderate |
| Metadata handling | moderate | moderate |
| Delivery profile | strong | strong |
| Workflow fit | delivery | delivery |
| 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 AIFC
- capture ingest
- editing and mastering
- streaming or playback delivery
- Useful for compatibility with older audio workflows.
When to use AU
- capture ingest
- editing and mastering
- streaming or playback delivery
- Historically important in Unix/workstation audio.
FAQs
Why convert AIFC 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 AIFC to AU?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting AIFC to AU?
Check the exported file for Largely obsolete in mainstream media workflows.; Usually converted immediately into newer formats..