NewTek TriCaster 8000 User Manual
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encoder, pull the stream to it, and finally begin re-distributing it to everyone
requesting it. This method worked passably until firewalls became more common.
Advantages:
o
Pull doesn’t waste bandwidth; no signal is being sent out to the
server unless somebody wants to view it.
o
If you lose your connection to the (provider side) server, the server
will re-connect to your encoder automatically when Internet
connection resumes.
o
Providers typically have significant bandwidth, and are able to meet
necessary requirements to deliver stutter-free, high quality streams
to large numbers of viewers.
Disadvantages:
o
Like the “Pull by End Users” method above, this requires a public IP
address, preferably a “static IP address” (which does not change
dynamically if you need to reconnect) as well as open ports for the
connection to be established. These requirements are becoming
increasingly difficult to meet (given common security measures).
P
USH
T
O
P
ROVIDER
Windows Server2003® introduced “Push” technology. With this method, the
encoder sends the stream to downstream servers. This allows the encoder to
establish a connection to the server on a specified port. Once this connection is
established, additional network ports may be opened as required (since the Encoder
established the connection, not the server.)
Advantages:
o
Easy to connect to the provider. There are no requirements for open
ports on your local system, or public IP’s. In addition, firewalls do
not get in the way.