Windows Media Video 9 codec format change
The format of content encoded with the Windows Media Video 9 codec
has changed since the release of the Windows Media 9 Series beta.
This change will cause some content to be unreadable by some players.
The effects of this change are:
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- Content created with the beta version
of the Windows \Media Video 9 codec will decode properly using
Windows Media Player or applications built with the Windows Media
Format SDK.
- Content created with any version
of the Windows Media Video 9 codec will decode properly using
the latest Windows Media Player or applications built with the
latest Windows Media Format SDK. This content can also be decoded
by older applications if they download the Windows Media Video
9 decoder after October 31, 2002.
- To decode content created with
the latest version of the Windows Media Video 9 codec, users of
Windows Media Player 7.0, 7.1, or Windows Media Player for Windows
XP should take the following steps to force the player to download
the latest decoder:
- Start Microsoft Internet Explorer.
- On the Tools
menu, click Internet Options.
- On the General
tab, click Settings, and then click View
Objects.
- Delete the object named {33564D57-9980-0010-8000-00AA00389B71}.
- On the Start
menu, click Run.
- Type the following command:
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rundll32 advpack.dll,LaunchINFSection
c:\windows\inf\wmv9dmo.inf,Uninstall
The next time a file containing Windows Media Video
9 content is loaded into Windows Media Player (or a player that
implements codec downloading), the latest version of the decoder
will be installed. Users of the beta version of Windows Media Player
9 Series must upgrade to a later release to play content encoded
with the new Windows Media Video 9 codec.
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