Sustainability of Digital Formats: Planning for Library of Congress Collections
Sustainability of Digital Formats: Planning for Library of Congress Collections |
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| Introduction | Sustainability Factors | Content Categories | Format Descriptions | Contact | |
| Full name | Windows Media Video File with Windows Media 9 Professional Codec |
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| Description | File format based in ASF (Advanced Systems Format) that wraps a Windows Media 9 professional video bitstream. |
| Production phase | Generally a final-state format for end-user delivery. |
| Relationship to other formats | |
| Subtype of | WMV, Windows Media Video |
| Contains | WMV9_PRO, Windows Media 9 Professional Video Codec |
| May contain | WMA9, Windows Media 9 Audio Codec |
| May contain | WMA9_PRO, Windows Media 9 Professional Audio Codec |
| LC experience or existing holdings | |
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| LC preference | See WMV. |
| Disclosure | See WMV and ASF. |
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| Documentation | See WMV and ASF. |
| Adoption | Not known to the compilers of this document. |
| Licensing and patents | See ASF for link to pages covering licensing of Windows Media and the Advanced Systems Format. |
| Transparency | Depends upon algorithms and tools to read; will require sophistication to build tools. |
| Self-documentation | See ASF |
| External dependencies | See WMV |
| Technical protection considerations | See ASF |
| Moving Image | |
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| Normal rendering | Good support. |
| Clarity (high image resolution) | See WMV9_PRO |
| Functionality beyond normal rendering | See WMV |
| Sound | |
| Fidelity (high audio resolution) | See WMV9_PRO |
| Multiple channels | See WMV9_PRO |
| Tag | Value | Note |
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| Filename extension | See note. | See WMV |
| Internet Media Type | See note. | See WMV |
| Magic numbers | See note. | See WMV |
| ASF GUID | See note. | See WMV |
| General | |
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| History |
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