The Multicast Announcement Wizard creates both an announcement
file and a multicast information file. The multicast information
file is a Windows Media metafile with an .nsc extension. The
multicast information file contains information a player needs to
use in order to decode a stream. Before receiving content delivered
as a multicast stream, the player must
access the multicast information file to extract the following
information:
Stream formats used by the content being delivered
If you make any changes to the publishing point configuration,
such as modifying settings for the multicast data writer plug-in or
renaming the publishing point, you must use the Multicast
Announcement Wizard to create a new multicast information file so
that players will be able to connect to your content.
Notes
Multicast information files must include all the
stream formats used by your content. If the stream formats are not
listed in the multicast information file, clients cannot access the
multicast stream.
Multicast streaming and the WMS Multicast Data
Writer plug-in are available only if Windows Media Services 9
Series is running on the following editions of the operating
system: Windows Server 2003, Enterprise Edition and Windows Server
2003, Datacenter Edition. If you are running Windows Server 2003,
Standard Edition, these features are not supported.
Notes