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HDR at a glance
HDR
HDR raster formats became important in rendering and lighting workflows before consumer-facing HDR delivery stories matured in mainstream media formats.
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 | HDR | VDA |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1989 | 1987 |
| Inventor | Greg Ward | Truevision |
| Status | active | 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 | Supported | Not supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use HDR
- Your source file is already in HDR.
- Preserve source expectations before exporting to VDA.
- HDR 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 HDR 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 HDR to VDA?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to VDA removes HDR content.
What should I review after converting HDR to VDA?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.