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PNM at a glance
PNM
Convert to PNM when you need a plain, easily processed raster format for scripts, research, or utility pipelines.
It is useful as an intermediate representation in technical imaging workflows.
PMD at a glance
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.
Format comparison
| Feature | PNM | PMD |
|---|---|---|
| File type | Image | Video |
| Extensions |
|
|
| MIME type |
|
|
| Compression / quality | depends | depends |
| File size characteristics | medium | large |
| Compatibility | broad | moderate |
| Editability | moderate | limited |
| Created year | 1988 | 2004 |
| Inventor | Jef Poskanzer / Netpbm lineage | Sony |
| Status | active | legacy |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Common software |
|
|
| Archival suitability | moderate | moderate |
| Metadata handling | moderate | moderate |
| Delivery profile | strong | strong |
| Workflow fit | delivery | delivery |
| Layer support | Not supported | Not supported |
| Camera raw data | Not supported | Not supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Not supported | Supported |
When to use each format
When to use PNM
- capture ingest
- editing
- web or print delivery
- Very simple to parse and generate.
When to use PMD
- editing
- mastering
- streaming delivery
- Integrates Sony-specific production metadata into the recording workflow.
FAQs
Why convert PNM 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 PNM to PMD?
This conversion changes how the format behaves in downstream tools and delivery environments.
Size profile changes from medium in PNM to large in PMD. Editability profile changes from moderate in PNM to limited in PMD. Compatibility profile changes from broad in PNM to moderate in PMD.
Moving to PMD adds streaming delivery.
What should I review after converting PNM to PMD?
Check the exported file for No public specification or documentation.; Essentially unreadable outside Sony's own software ecosystem.; Entirely superseded by Sony's modern professional recording formats..