A player uses stream format information to decode a stream. A
stream format includes information about the stream, including
Stream format information is transmitted to players when they first connect to a publishing point on your server. However, if you are delivering your content as a multicast stream, players do not connect directly to your server to receive the stream. In this situation, the multicast information file incorporates the stream format information instead. The multicast information file is created when you run the Multicast Announcement Wizard.
When you use the Multicast Announcement Wizard to
|Content type||Location of stream format information|
|File||Stream format information is obtained from the
header portion of the file. To include the stream format
information for the file, you must specify a
|Stream from an encoder||Stream format information is stored in a stream format file that is generated by an encoder. For Windows Media Encoder version 4.1 (included with Windows 2000 Server), this file has an .asd extension. For Windows Media Encoder 7 or later, this file has an .asf extension. To include the stream format information for the encoder stream, you must specify a UNC path or a local path to the stream format file. Windows Media Encoder 9 Series automatically transmits the stream format information to the server when it connects. For more information about streaming from an encoder, see Windows Media Encoder Help.|
If stream format information is missing or incorrect for a piece of content, the player cannot render that content.