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SGI at a glance
SGI
Before today's relatively small set of mainstream consumer image formats dominated everyday use, desktop software, workstations, GUI systems, and early graphics tools produced many specialized raster formats with local importance.
VDA at a glance
VDA
The Truevision line grew out of EPICenter-era PC graphics boards, and several board names ended up surviving as filename extensions even when the underlying raster structure stayed close to the wider TGA family.
Format comparison
| Feature | SGI | VDA |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1990 | 1987 |
| Inventor | Silicon Graphics Inc. | Truevision |
| Status | legacy | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Not supported | Not supported |
| Vector scaling | Not supported | Not supported |
| Camera raw data | Not supported | Not supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use SGI
- Your source file is already in SGI.
- Preserve source expectations before exporting to VDA.
- SGI is commonly used in image workflows.
When to use VDA
- Your target workflow expects VDA.
- Improve delivery compatibility with VDA.
- VDA is commonly used in image workflows.
FAQs
Why convert SGI to VDA?
Convert to VDA when recovering or preserving historical Truevision-era graphics assets, or when normalizing a legacy image collection before moving it into PNG, TIFF, or another contemporary raster format.
What changes when converting SGI to VDA?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting SGI to VDA?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.