Available Multicast Streams - Extron electronics SMP 351 User Manual

Available Multicast Streams

The SMP 351 uses the IGMP multicast protocol to push or pull streams. The IGMP multicast
protocol provides increased bandwidth efficiency because the SMP 351 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 351 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
NOTES:
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 351:
• 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 = Uniicast 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 351 • Reference Information
Pull Streams
>180
188