User guide

4Sight 21
Administrator Guide
Version 3.1
Figure 1. Unicast streaming
Multicast streaming
Multicast streaming means communication between one sender and
multiple receivers. During such a session, one copy of each stream is sent
over each branch of a network. The main advantage is that this reduces
the network traffic necessary to send data to large numbers of clients. The
main disadvantage is that the user has no control over the requested
movies to navigate forward or backward.
The session process is the following:
1. The server (or broadcaster) broadcasts a stored content or a live
broadcast to a multicast address.
2. Clients join the multicast session by opening an SDP file, by accepting
SDP broadcast, or by joining SAP session. The SDP describes the
number of streams that need to be opened, the multicast address, the
port numbers on which each stream is sent, and additional data such
as transport information.
Stream 1
Stream 3
Stream 2
4Sight
EnvivioTV™
4View
EnvivioTV™
4View
EnvivioTV™
4View