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PNM Raw at a glance
PNM Raw
Convert to PNM raw when you need a no-frills lossless raster format for scripts, benchmarking, image-processing experiments, or toolchains that prefer direct pixel access with minimal container complexity.
It is especially useful as an intermediate representation between automated processing steps.
VOB at a glance
VOB
Convert to VOB when preserving DVD-video structure, maintaining authored disc compatibility, or recovering content from DVD-based collections.
It is useful for archival and disc-focused workflows where the DVD container family still matters.
For file-based viewing and sharing, MP4 is usually the better target.
Format comparison
| Feature | PNM Raw | VOB |
|---|---|---|
| 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 | 1996 |
| Inventor | Jef Poskanzer | DVD Forum |
| Status | active | active |
| 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 | Not supported |
When to use each format
When to use PNM Raw
- capture ingest
- editing
- web or print delivery
- Tiny conceptual overhead for binary raster interchange.
When to use VOB
- editing
- mastering
- streaming delivery
- Strong provenance from DVD workflows.
FAQs
Why convert PNM Raw to VOB?
Convert to VOB when preserving DVD-video structure, maintaining authored disc compatibility, or recovering content from DVD-based collections.
It is useful for archival and disc-focused workflows where the DVD container family still matters.
For file-based viewing and sharing, MP4 is usually the better target.
What changes when converting PNM Raw to VOB?
This conversion changes how the format behaves in downstream tools and delivery environments.
Size profile changes from medium in PNM Raw to large in VOB. Editability profile changes from moderate in PNM Raw to limited in VOB. Compatibility profile changes from broad in PNM Raw to moderate in VOB.
What should I review after converting PNM Raw to VOB?
Check the exported file for Tightly bound to DVD-era assumptions.; Usually converted into newer containers for practical current use..