Sustainability of Digital Formats
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Windows Media Video File with WMV9 Codec

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Format Description Properties Explanation of format description terms

Identification and description Explanation of format description terms

Full name Windows Media Video File with Windows Media 9 Codec
Description File format based in ASF (Advanced Systems Format) that wraps a Windows Media 9 video bitstream.
Production phase Generally a final-state format for end-user delivery.
Relationship to other formats
    Subtype of WMV, WMV (Windows Media Video) File Format
    Contains WMV9, Windows Media 9 Video Codec; SMPTE VC-1
    May contain WMA9, Windows Media 9 Audio Codec
    May contain WMA9_PRO, Windows Media 9 Professional Audio Codec

Local use Explanation of format description terms

LC experience or existing holdings  
LC preference See WMV

Sustainability factors Explanation of format description terms

Disclosure See WMV and ASF
    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

Quality and functionality factors Explanation of format description terms

Moving Image
Normal rendering Good support.
Clarity (high image resolution) See WMV9
Functionality beyond normal rendering See WMV
Sound
Fidelity (high audio resolution) See WMV9
Multiple channels See WMV9

File type signifiers Explanation of format description terms

Tag Value Note
Filename extension See related format.  See WMV.
Internet Media Type See related format.  See WMV.
Magic numbers See related format.  See WMV.
ASF GUID See related format.  See WMV.

Notes Explanation of format description terms

General  
History  

Format specifications Explanation of format description terms


Useful references

URLs


Last Updated: 10/30/2013