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WMF at a glance
WMF
The original WMF specification was published in the Windows 3.1 SDK documentation in 1992. Aldus Corporation independently added a 'placeable' header for device independence, which Microsoft later incorporated in Windows 2000. The format specification was republished in 2006 under the Microsoft Open Specification Promise.
VOB at a glance
VOB
VOB belongs to the age when physical discs dominated home video distribution and playback behavior was shaped by DVD standards.
Format comparison
| Feature | WMF | VOB |
|---|---|---|
| File type | Vector | Video |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1990 | 1996 |
| Inventor | Microsoft Corporation | DVD Forum |
| Status | legacy | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Not supported | Not supported |
When to use each format
When to use WMF
- Your source file is already in WMF.
- Preserve source expectations before exporting to VOB.
- WMF is commonly used in vector workflows.
When to use VOB
- Your target workflow expects VOB.
- Improve delivery compatibility with VOB.
- VOB is commonly used in video workflows.
FAQs
Why convert WMF 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 WMF to VOB?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting WMF to VOB?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.