Data Transport Methods

Source (video) data from a VNC 325 encoder can be distributed to multiple decoders and displays (one-to-many) or to a single decoder and display (point-to-point). Video data is transported from the source (encoder) to the display (decoder) using one of three methods, in order of preference, which are detailed in the following sections:

Multicast real-time protocol (RTP) — Best choice

Unicast RTP — Second choice

Unicast Transport Control Protocol (TCP) — Acceptable

You need to select among these three methods using the HTML pages, see “Configure Encoders or Decoders“ on page 25.

Multicast RTP

The multicast real-time protocol (RTP) data transport method is connected as shown in figure 3. Multicast RTP is a one-to-many protocol that allows a source to be displayed on an infinite number of displays. This transport method uses a real-time variation of User Datagram Protocol (UDP), called RTP. In figure 3, the streaming data is identified as “RTPm”.

RTPm

IP Decoder 1

Program Data

 

 

 

LAN-1

 

 

LAN-2

TEST

 

STATUS

 

ALARM

VN-MATRIX 325 SERIES

SERIAL DIGITAL VIDEO OVER IP

IP Encoder

IP Decoder 2

LAN-1

 

LAN-1

 

LAN-2

TEST

LAN-2

TEST

STATUS

 

STATUS

 

ALARM

 

ALARM

 

 

 

VN-MATRIX 325 SERIES

 

 

VN-MATRIX 325 SERIES

 

 

 

SERIAL DIGITAL VIDEO OVER IP

 

 

SERIAL DIGITAL VIDEO OVER IP

 

 

RTPm

RTPm

 

 

 

Program Data

 

 

 

Program Data

 

 

 

 

 

 

 

 

 

Network

RTPm

 

 

 

 

 

Program Data

 

 

 

 

System Control

 

 

 

 

IP Decoder 3

 

 

 

 

 

LAN-1

 

 

 

 

 

 

LAN-2

TEST

 

 

 

 

System Control

STATUS

 

VN-MATRIX 325 SERIES

 

 

 

ALARM

 

 

 

 

 

 

 

SERIAL DIGITAL VIDEO OVER IP

 

 

 

Decoder Configured as Controller

 

Monitoring and

IP Decoder 4

 

 

 

Control

 

 

 

 

 

 

 

 

 

 

 

 

STATUS

 

 

IP Decoder n-1

 

 

LAN-1

 

 

 

 

 

 

LAN-2

TEST

 

 

 

 

 

ALARM

 

 

 

 

 

 

 

STATUS

 

VN-MATRIX 325 SERIES

IP Decoder n

 

 

 

 

SERIAL DIGITAL VIDEO OVER IP

 

 

 

LAN-1

 

 

 

 

 

LAN-2

TEST

 

 

 

 

RTPm

ALARM

 

 

 

 

 

 

 

VN-MATRIX 325 SERIES

 

 

 

Program Data

 

LAN-1

SERIAL DIGITAL VIDEO OVER IP

 

 

 

 

 

LAN-2 TEST

 

 

 

 

 

 

STATUS

 

 

 

 

 

 

ALARM

 

 

 

 

 

 

 

VN-MATRIX 325 SERIES

 

 

 

 

 

 

SERIAL DIGITAL VIDEO OVER IP

 

 

 

 

Any number of decoders can

 

 

 

 

be part of the multicast RTP group.

 

Figure 3. Typical Multicast RTP Application

 

 

 

NOTES: The UDP protocol is a standard Internet network protocol that is connection-

 

 

less, meaning that it does not use the hand-shaking that provide reliability,

 

 

ordering, or data integrity but is overhead intensive. Therefore, UDP can

 

 

be unreliable. On the other hand, RTP provides very low latency, which is

 

 

important for video transport.

 

 

 

 

The VN-Matrix 325 supports IGMP V2 for multicast streaming.

VN-Matrix 325 Serial Digital Over IP CODEC • Installation and Setup 8

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Extron electronic 325 manual Data Transport Methods, Multicast RTP

325 specifications

Extron Electronics has established itself as a key player in the AV technology industry, providing innovative solutions for a wide range of applications. Among their product lineup, the Extron Electronics 225 and 325 series of devices stand out for their advanced features, technologies, and characteristics that cater to both commercial and educational environments.

The Extron 225 and 325 series are designed for seamless integration into various AV systems, offering unparalleled performance and reliability. At the core of these devices is their robust signal processing capability. Both models are equipped with high-performance scalers and switchers that ensure optimal video quality. They support a wide range of resolutions, including 4K, enabling users to connect various sources without compromising image fidelity.

One of the key features of the 225 and 325 series is their versatile connectivity options. These devices come with multiple inputs, including HDMI, VGA, and composite, allowing for the integration of various AV sources. The series also includes configurable outputs, which can be customized according to the specific requirements of the installation. This flexibility is vital in multipurpose spaces where different AV setups are needed.

The technologies embedded in the 225 and 325 series also enhance usability and control. They feature Extron’s integrated control systems, which simplify the operation of entire AV systems. Users benefit from the intuitive user interface, enabling easy switching and management of devices. Additionally, compatibility with third-party control systems allows for seamless integration into existing setups, streamlining operations.

Another noteworthy characteristic is the series’ built-in audio processing capabilities. Both the 225 and 325 models support various audio formats, ensuring high-quality sound output. They also include audio embedding and de-embedding functions, facilitating the integration of audio sources with video signals.

Reliability and durability are hallmarks of the Extron brand, and the 225 and 325 series are no exceptions. Designed for long-term use, these devices undergo rigorous testing to ensure they perform consistently under demanding conditions. Their compact form factor also allows for easy installation in constrained spaces, making them ideal for a variety of environments.

In summary, the Extron Electronics 225 and 325 series deliver top-tier performance, expansive connectivity, and exceptional audio-visual processing capabilities. Their innovative features and robust design make them valuable additions to any AV installation, catering to a wide range of user needs in commercial and educational settings. With Extron’s commitment to quality and user-friendly solutions, the 225 and 325 series stand as testament to their leadership in the AV technology realm.