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RealVideo at a glance
RealVideo
RealNetworks released the first RealVideo codec in February 1997 as part of RealPlayer 5, pioneering internet video streaming when bandwidth was extremely limited and competing with Microsoft's Windows Media and Apple's QuickTime Streaming.
PFM Raw at a glance
PFM Raw
PFM persists from the era when HDR imaging, rendering research, and tone-mapping workflows needed straightforward file carriers for floating-point image data long before mainstream consumer HDR delivery formats matured.
Format comparison
| Feature | RealVideo | PFM Raw |
|---|---|---|
| File type | Video | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1997 | 1998 |
| Inventor | RealNetworks | PBRT / Paul Debevec community |
| Status | legacy | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Supported | Not supported |
| Camera raw data | Not supported | Not supported |
| HDR support | Not supported | Supported |
| Streaming ready | Supported | Not supported |
When to use each format
When to use RealVideo
- Your source file is already in RealVideo.
- Preserve source expectations before exporting to PFM Raw.
- RealVideo is commonly used in video workflows.
When to use PFM Raw
- Your target workflow expects PFM Raw.
- Improve delivery compatibility with PFM Raw.
- PFM Raw is commonly used in image workflows.
FAQs
Why convert RealVideo to PFM Raw?
Convert to PFM raw when HDR rendering, tone-mapping, or scientific-imaging workflows need floating-point pixel values to survive intact between tools.
It is especially useful as an intermediate format for graphics research, physically based rendering, and analytical image-processing pipelines that operate on scene-referred data.
What changes when converting RealVideo to PFM Raw?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to PFM Raw removes layer support. Moving to PFM Raw adds HDR content. Moving to PFM Raw removes streaming delivery.
What should I review after converting RealVideo to PFM Raw?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.