NewTek TriCaster Advanced Edition Automation and Integration Guide - Manual (Page 53)

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Chapter 8 IP VIDEO & CONTROL
Most NewTek live production systems support both ingest and output of a/v feeds over
standard network infrastructure. This provides a plethora of valuable creative and efficient
alternatives. In addition systems can send or receive control instructions from networked
devices and systems, offering many powerful possibilities.
Section 8.1 A
IR
S
END
™
The software API (application programming interface) providing network A/V support in NewTek
products is called AirSend™. Various systems and software (both native and third-party) also take
advantage of AirSend to send and receive control instructions and tally (on air) notification.
Note: Qualified developers can obtain details through the NewTek Developer Program.
8.1.1 NETWORK VIDEO OUT
NewTek live production systems natively support network a/v signal output (details of network output are
provided in the general product manuals.) These program streams can be used by other NewTek live
production systems on the network, or supplied to other downstream devices supporting the same video
over IP format.
Potential applications of this capability are diverse, and include such things as sending program output to a
downstream internet streaming server, a sports telestration application, etc. The downstream system need
only be able to display the MPEG-2 stream received.
For example, the popular open source media player VLC can play the network output stream from a
NewTek live production system. It is simply necessary to open a URL formatted as shown below in the VLC
application:
http://ip_number:port_number/NewTekNetworkSend.mpg
 Substitute the IP number of the source system for “ip_number” above.
 The port number for network outputs from TriCaster defaults to 49480. 3Play’s A and B outputs
default to ports 49480 and 49481. (If the default ports are unavailable, the system attempts to
access the next higher port, and so.)
8.1.2 NETWORK VIDEO IN
Likewise, video (complete with embedded alpha channel and audio) served to NewTek production systems
across standard network architecture can serve as live a/v sources. NewTek systems support this
workflow by means of ‘Network Inputs’. TriCaster Pro models sport two such sources. 3Play 440 and