Viewing using an external player
Another way of viewing streaming is to use an external player. The only tested players are QuickTime 6.0 and VIC (supplied by
the University of California Berkeley), but this does not exclude the possibility of compatibility with other players that accept
RTP streams.
The first operation necessary is to activate streaming. This can be achieved by simply entering the IP address of the system in
the “Address” field on the streaming configuration page of the system where the player is located, or the multicast address of
the group to whom the stream is being sent. Pressing the “Activate” key will enable the machine to begin the transmission of
audio-video packets to the player.
If you use QuickTime as a player, you can simply select “File” from the menu, then “Open URL in new player” and enter
http://aaa.bbb.ccc.ddd/stream.sdp where aaa.bbb.ccc.ddd is the IP address of the System that is to send the stream.
Viewing using a Distribution Server
Distribution servers offer a range of services for stream management that the System cannot offer directly. If users would like
to make use of a distribution server for streaming transmission sent from a System, they can do so in accordance with the
server’s characteristics.
Using a Proxy
Multicast streaming transmissions require an appropriate network configuration, with limitations imposed by the presence of
any Firewall or Proxy.
To offer good protection, these must block IP packets directed to unknown ports, such as the UDP ports used for audio and
video streams. If the stream has to pass through such equipment, the equipment must be configured for any eventual multicast
and have the appropriate ports enabled for streaming. If the stream is sent over an internal network, problems can still arise if it
is necessary to pass through a firewall in order to gain external access.
Deactivate Streaming
In order to stop streaming, go to the “Deactivate” key on the streaming configuration page and press OK, or simply close the
browser.
60
