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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.
CRW at a glance
CRW
Early Canon digital-camera workflows used raw formats like CRW before the later EOS raw families stabilized around CR2 and then CR3.
Format comparison
| Feature | HEVC/H.265 | CRW |
|---|---|---|
| File type | Video | Image |
| Extensions |
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| MIME type |
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| Created year | 2013 | 2000 |
| Inventor | Joint Collaborative Team on Video Coding (JCT-VC) — ITU-T and ISO/IEC | Canon |
| 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 CRW.
- HEVC/H.265 is commonly used in video workflows.
When to use CRW
- Your target workflow expects CRW.
- Improve delivery compatibility with CRW.
- CRW is commonly used in image workflows.
FAQs
Why convert HEVC/H.265 to CRW?
Convert to CRW when maintaining compatibility with older Canon raw libraries or recovering historical camera originals.
In most current workflows it is a source to preserve or migrate, not a preferred new output format.
What changes when converting HEVC/H.265 to CRW?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to CRW adds camera raw data. Moving to CRW removes HDR content. Moving to CRW removes streaming delivery.
What should I review after converting HEVC/H.265 to CRW?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.