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VOB at a glance
VOB
Convert VOB files with ConverterHQ using workflows tuned for video compatibility, predictable output, and practical downstream use.
Category
Video
Extensions
.vob
MIME types
video/dvd
Created
1996
Inventor
DVD Forum
Status
active
PNM at a glance
PNM
Convert PNM files with ConverterHQ using workflows tuned for image compatibility, predictable output, and practical downstream use.
Category
Image
Extensions
.pnm
MIME types
image/x-portable-anymap
Created
1988
Inventor
Jef Poskanzer / Netpbm lineage
Status
active
Format comparison
| Feature | VOB | PNM |
|---|---|---|
| File type | Video | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1996 | 1988 |
| Inventor | DVD Forum | Jef Poskanzer / Netpbm lineage |
| Status | active | 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 | Not supported | Not supported |
When to use each format
When to use VOB
- Your source file is already in VOB.
- Preserve source expectations before exporting to PNM.
- VOB is commonly used in video workflows.
When to use PNM
- Your target workflow expects PNM.
- Improve delivery compatibility with PNM.
- PNM is commonly used in image workflows.
FAQs
Why convert VOB to 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.
What changes when converting VOB to PNM?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting VOB to PNM?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.