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HEVC/H.265 at a glance
HEVC/H.265
The Joint Collaborative Team on Video Coding developed HEVC through ITU-T VCEG and ISO MPEG, building on H.264 coding tools while introducing 64×64 coding tree units, advanced motion compensation, and scalable/multiview extensions.
ORF at a glance
ORF
ORF belongs to the long Olympus digital-camera story, especially in the Four Thirds and Micro Four Thirds eras where portability and serious editing often coexisted.
Format comparison
| Feature | HEVC/H.265 | ORF |
|---|---|---|
| File type | Video | Image |
| Extensions |
|
|
| MIME type |
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| Created year | 2013 | 2003 |
| Inventor | Joint Collaborative Team on Video Coding (JCT-VC) — ITU-T and ISO/IEC | Olympus (now OM System) |
| Status | active | proprietary |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
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| Layer support | Not supported | Not supported |
| Camera raw data | Not supported | Supported |
| HDR support | Supported | Not supported |
| Streaming ready | Supported | Not supported |
When to use each format
When to use HEVC/H.265
- Your source file is already in HEVC/H.265.
- Preserve source expectations before exporting to ORF.
- HEVC/H.265 is commonly used in video workflows.
When to use ORF
- Your target workflow expects ORF.
- Improve delivery compatibility with ORF.
- ORF is commonly used in image workflows.
FAQs
Why convert HEVC/H.265 to ORF?
Convert to ORF when preserving Olympus camera originals or maintaining compatibility with an Olympus raw-photo workflow.
It is useful for archive masters and non-destructive photographic editing.
What changes when converting HEVC/H.265 to ORF?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to ORF adds camera raw data. Moving to ORF removes HDR content. Moving to ORF removes streaming delivery.
What should I review after converting HEVC/H.265 to ORF?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.