The BC840-MC can send SAP multicast streams generated by its H.264 and audio encoders.
The video streams will include audio if audio is enabled on the Audio web page and if the
multicast IP range is the same as for video. Note that audio in itself can also be received as a
separate stream. For more information about SAP, see the note later in this chapter.
Item
Description
Enable SAP
When selected, session announcements are sent at the frequency
determined by the Announcement interval parameter and the
media stream is transmitted to the multicast IP address specified in
the Stream dest. IP address box.
Stream name
Enter a descriptive name to identify the media stream.
Stream dest. IP
Enter the multicast IP address the media stream is to be sent to.
The address must be within the range defined by the Multicast IP
range parameter.
Stream dest. port
The destination port number. Default: 1024.
Stream DSCP field
Range: [0…63]. See the note on DSCP.
Multicast TTL
Range: [0...127]. Specify the number of routers (hops) that
multicast traffic is permitted to pass through before expiring on the
network.
Announcement
interval
Determines the frequency of announcements.
Session scope
Global, the default session scope, sets the Multicast IP range
parameter to 224.2.128.0 - 224.2.255.255 (IPv4 global scope
sessions). A SAP listening application will recognize the global
scope and automatically listen for SAP announcements at the
224.2.127.254 multicast IP address.
The Administrative session scope allows you to enter a custom IP
range within the 239.0.0.0 - 239.255.255.255 (IPv4 administrative
scope sessions) range. For an Administrative session scope, the
multicast address for SAP announcements will be set to the highest
address in the relevant administrative scope. For example, for a
scope range of 239.16.32.0 - 239.16.33.255, the IP address
239.16.33.255 is used for SAP announcements.
Multicast IP range
See Session scope.
To configure SAP settings, do the following
1
In the SAP settings section, select Enable SAP.
2
Enter a stream name.
3
In the Session scope list, select Global or Administrative.
4
If you selected Administrative in the previous step, specify the Multicast IP range.
5
Enter the Stream Destination IP address and the port number.
The IP address must be within the scope range displayed for the Multicast IP range
parameter.
6
Enter/modify the values for Stream DSCP field, Multicast TTL, and Announcement
Interval, if desired.
7
Click Save.
The video stream can now be viewed in a media player, such as QuickTime or VLC.
Video
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