VBrick Systems VB5000, VB6000, VB4000 manual Multicast Playback, NSC File Information -- Slot1

	WM Configuration
NSC File Information -- Slot1
Get NSC	Press button to save
	NSC file. NSC files are
	only needed to create a
	publishing point on a
	Microsoft Windows
	Media Server that
	receives the multicast
	from a VBrick WM
	Appliance.
Unicast Rollover URL	When present, the player will try to use the rollover URL to play the
	stream if it cannot receive the multicast.
Allow Stream Splitting	Tells receivers of the multicast stream whether they should be
	allowed to replicate the stream to multiple clients.
Allow Fast Caching	Tells receivers of the multicast stream whether they should be
	allowed to cache the stream to disk.
Cache Expiration	The cache expiration time in seconds. Tells receivers of the multicast
Time	how long a cache of the stream is valid.
Network Buffer Time	The buffer time in milliseconds. Adjusts the depth of the player's
	network buffer.

Multicast Playback

There are several ways to play the multicast stream from your VBrick WM Appliance on Windows Media player. The following playback options all use the .asx file and therefore offer all the .asx features including Program Name, Author, Copyright, Banner, and Log URL that are configured on the Announce (SAP) screen. The .asx file uses a URL reference to the NSC file on the WM Appliance so these playback methods also offer all the features of the NSC file including the Unicast Rollover URL, Allow Stream Splitting, Allow Fast Caching, Cache Expiration Time, and Network Buffer Time.

TTo play back a multicast stream:

•Launch the player directly from the IWS by clicking Click here to play multicast. This is a good way for the WM Appliance administrator to easily view the stream when adjusting various encoder parameters via the IWS.

•Right-click on Click here to play multicast and select Save Target As to save the .asx

file on your computer. You can then double click the .asx file to launch the player and play the multicast stream. E-mail the .asx file or make it available on a shared network drive to allow other viewers on your network to play the multicast stream.

•Play the multicast stream from a browser or from a standalone player using the URL

http://vbrickipaddress/vbs1multi.asx. (The WM Appliance serves the .asx file via

HTTP.) The URL to the multicast .asx for Slot2 of a dual WM Appliance is http://

vbrickipaddress/vbs2multi.asx.

•Use VBrick's StreamPlayer product to add an automatic program guide to Windows Media Player so when you run StreamPlayer it will automatically list all the multicast programs available on your network. The user can then click on a program to launch Windows Media Player to play the stream. (The WM Appliance can send network

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