When you are pulling a stream from an encoder for a multicast
broadcast, you need to provide the players with the information
necessary to decode the stream. You have the following options for
obtaining encoder stream format information:
Automatically retrieve stream formats from my encoder
(suitable only when the encoder is running). Select this option
to have the server connect to the encoder and retreive the stream
format file from the header information.
Manually select stream formats (recommended when the encoder
is not running or when using an existing stream format). Select
to locate a stream format file manually. If the encoder is not
running, you must select this option.
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.