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JPF in sintesi
JPF
JPEG 2000 arrived as a major standards effort to improve on classic JPEG, but its practical adoption concentrated in specialist domains rather than in the universal browser-and-camera role held by JPEG.
PMD in sintesi
PMD
The .pmd extension appeared in Sony's prosumer and professional recording device output alongside other Sony-proprietary formats like MQV, serving as a companion metadata or media descriptor file.
Confronto tra formati
| Caratteristica | JPF | PMD |
|---|---|---|
| File type | Image | Video |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2000 | 2004 |
| Inventor | Joint Photographic Experts Group | Sony |
| Status | active | legacy |
| Transparency | Non supportato | Non supportato |
| Animation | Non supportato | Non supportato |
| Primary use cases |
|
|
| Layer support | Non supportato | Non supportato |
| Camera raw data | Non supportato | Non supportato |
| HDR support | Non supportato | Non supportato |
| Streaming ready | Non supportato | Supportato |
Quando usare ciascun formato
When to use JPF
- Your source file is already in JPF.
- Preserve source expectations before exporting to PMD.
- JPF is commonly used in image workflows.
When to use PMD
- Your target workflow expects PMD.
- Improve delivery compatibility with PMD.
- PMD is commonly used in video workflows.
Domande frequenti
Why convert JPF to PMD?
Convert to PMD when maintaining compatibility with a Sony-centered production workflow, preserving source media from a professional ingest system, or migrating archived broadcast assets that were originally wrapped for structured editorial exchange.
What changes when converting JPF to PMD?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to PMD adds streaming delivery.
What should I review after converting JPF to PMD?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.