Video
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12.3.5.5
SAP Settings
Video > Encoder # > Advanced > SAP Settings
SAP announcer
The TC620-PID includes a SAP announcer. The Session Announcement Protocol is used to
advertise that a media stream generated by the TC620-PID is available at a specific multicast
address and port.
The TC620-PID 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.
