Extron electronics SMP 351 User Manual

Streaming Method Overview
The streaming method used by the SMP351 should be considered carefully. Multicast is
typically used for live multicasting a "one-to-many" session when it is known there will be
multiple viewers of a stream. Unicast streaming is used for on-demand video where the
network infrastructure does not support multicast traffic. Typically, unicast streaming is used
for a point-to-point (one-to-one) connection.
Protocols Used for Streaming
Streaming protocols must be selected based on the streaming method and the SMP351
capability. The following transport layer protocols can be used for SMP351 streaming.
Pull Push
Unicast Multicast Unicast Multicast
RTP (RTP over UDP) RTP (RTP over UDP) TS/UDP TS/UDP
TS/RTP TS/RTP
ES/RTP (Native RTP) ES/RTP (Native RTP)
The transport protocols are summarized in this section. For information on how to change
the SMP351 transport protocol, see the Streaming section on page 31.
Multicast Streaming Method — An Overview
This streaming method is used for live video multicasting with low latency in a
"one-to-many" streaming session. The SMP351 uses a variety of streaming protocols to
send data to a multicast group. Using multicasting, the SMP351 does not need to know
the IP address of the devices viewing the stream. This allows a large number of users to
view the data simultaneously while using bandwidth efficiently. The maximum number of
connected users is dependent on the type of distribution network used.
NOTE: To use this streaming method, each network must be configured to pass
multicast broadcasts.
Multicast streaming can use push or pull streaming. It can push the data to a network for
broader distribution, or to many individual viewing devices. It can also use pull streaming,
where the SMP351 waits for viewing devices to request the stream before broadcasting.
SMP 351
(encoder)
Viewing
device
Viewing
device
Viewing
device
Viewing
device
NETWORK
SMP 351 sends data
to a multicast group.
Multiple devices can be
part of the multicast group.
Streaming
Protocol
Streaming
Protocol
Streaming
Protocol
Streaming
Protocol
Streaming
Protocol
Streaming
Protocol
Additional
devices
Figure 97. Multicast Streaming
SMP351 • Reference Information 192

Extron electronics SMP 351 Specifications

General

Brand	Extron electronics
Model	SMP 351
Category	Processor
Language	English