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VML at a glance
VML
VML emerged as a 1998 W3C submission backed by Microsoft and partners such as Autodesk, Hewlett-Packard, Macromedia, and Visio, reflecting the moment when web graphics standards were still unsettled.
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 | VML | VOB |
|---|---|---|
| File type | Vector | Video |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1998 | 1996 |
| Inventor | Microsoft, Macromedia, Autodesk, Hewlett-Packard, Visio | 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 VML
- Your source file is already in VML.
- Preserve source expectations before exporting to VOB.
- VML 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 VML 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 VML to VOB?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting VML to VOB?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.