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PMD at a glance
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.
JPM at a glance
JPM
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.
Format comparison
| Feature | PMD | JPM |
|---|---|---|
| File type | Video | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2004 | 2000 |
| Inventor | Sony | Joint Photographic Experts Group |
| Status | legacy | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Not supported | Supported |
| Camera raw data | Not supported | Not supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Supported | Not supported |
When to use each format
When to use PMD
- Your source file is already in PMD.
- Preserve source expectations before exporting to JPM.
- PMD is commonly used in video workflows.
When to use JPM
- Your target workflow expects JPM.
- Improve delivery compatibility with JPM.
- JPM is commonly used in image workflows.
FAQs
Why convert PMD to JPM?
Convert to JPM when working with scanned pages or compound document images that benefit from JPEG 2000-style compression and structure.
It is a specialist target for document-imaging workflows.
What changes when converting PMD to JPM?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to JPM adds layer support. Moving to JPM removes streaming delivery.
What should I review after converting PMD to JPM?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.