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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.
RealVideo at a glance
RealVideo
RealNetworks released the first RealVideo codec in February 1997 as part of RealPlayer 5, pioneering internet video streaming when bandwidth was extremely limited and competing with Microsoft's Windows Media and Apple's QuickTime Streaming.
Format comparison
| Feature | VML | RealVideo |
|---|---|---|
| File type | Vector | Video |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1998 | 1997 |
| Inventor | Microsoft, Macromedia, Autodesk, Hewlett-Packard, Visio | RealNetworks |
| Status | legacy | legacy |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Not supported | Supported |
When to use each format
When to use VML
- Your source file is already in VML.
- Preserve source expectations before exporting to RealVideo.
- VML is commonly used in vector workflows.
When to use RealVideo
- Your target workflow expects RealVideo.
- Improve delivery compatibility with RealVideo.
- RealVideo is commonly used in video workflows.
FAQs
Why convert VML to RealVideo?
Convert to or from RealVideo when recovering streaming-era web media, preserving early RealNetworks distributions, or migrating archived RM and RMVB collections into current containers such as MP4.
It is primarily a legacy-access format for old internet-video libraries rather than a target for new delivery.
What changes when converting VML to RealVideo?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to RealVideo adds layer support.
What should I review after converting VML to RealVideo?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.