Extron electronics SMP 300 Series User Manual page 160

Available Multicast Streams
The SMP 300 Series uses the IGMP multicast protocol to push or pull streams. The IGMP
multicast protocol provides increased bandwidth efficiency because the SMP 300 Series
only sends data when a connection is made by the user. All network switches and routing
equipment must be properly configured to support IGMP snooping and IGMP query to
avoid flooding all endpoints with unnecessary streaming traffic.
The table below indicates the approximate number of multicast streams supported by the
SMP 300 Series using the IGMP multicast protocol. Operating at different resolutions using
higher or lower bit rates can increase or decrease the scalability of the streaming system.
NOTE: For networks not configured to use the IGMP multicast protocol, consider using
a media server to deliver multiple unicast streams to control PCs and viewing devices.
Pull Stream Method
Resolution
(Pixels x Lines @ frame rate)
1920 x 1080 @ 30
NOTE: The number of available pull streams is dependent on bandwidth and content
(high motion or static content).
The following configuration options were set on the SMP:
• Stream Type = VBR
• GOP Length = 30
Stream Mode = Video/Audio
•
• Layout = Full screen with high motion content
Archive Pull Streaming Method = Multicast UDP
•
• Confidence Pull Streaming Method = Unicast RTP at default
settings
If more streams are required, setting up a media server is the next step in expanding the
streaming architecture. A media server provides a scalable live streaming media solution.
Push Stream Method
The number of multicast push streams is not limited.
Multicast
Recommended Approximate Number of
Video Bit Rate
(Kbps)
8000
SMP 300 Series • Reference Information
Pull Streams
>180
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