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CROSS-FORMAT
3GP to AU Converter — Free, Online, No Signup
Convert 3GP files to AU online with no signup required.
3GP at a glance
3GP
3GP is closely tied to the age of small screens, limited bandwidth, and early mobile recording/sharing workflows.
AU at a glance
AU
AU belongs to an earlier multimedia era where workstation and Unix vendors often had their own practical audio defaults.
Format comparison
| Feature | 3GP | AU |
|---|---|---|
| File type | Video | Audio |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1998 | 1987 |
| Inventor | 3GPP | 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 3GP
- Your source file is already in 3GP.
- Preserve source expectations before exporting to AU.
- 3GP is commonly used in video 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 3GP 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 3GP to AU?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting 3GP to AU?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.