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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.
PGX at a glance
PGX
These formats persist in engineering, compression research, and conversion-tool contexts where simple sample storage or adjunct technical representation is useful.
Format comparison
| Feature | PMD | PGX |
|---|---|---|
| File type | Video | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2004 | 2000 |
| Inventor | Sony | ISO/IEC (JPEG 2000 committee) |
| Status | legacy | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Not supported | Not 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 PGX.
- PMD is commonly used in video workflows.
When to use PGX
- Your target workflow expects PGX.
- Improve delivery compatibility with PGX.
- PGX is commonly used in image workflows.
FAQs
Why convert PMD to PGX?
Convert to PGX when a technical imaging or codec workflow expects grayscale component data in a simple specialist format.
It is useful for research, testing, and standards-oriented image processing.
What changes when converting PMD to PGX?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to PGX removes streaming delivery.
What should I review after converting PMD to PGX?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.