Typical bit rates

This section provides estimated bit rates for various video, audio, and error correction selections and suggested mode (see “Bandwidth Management”, item Ä), selections.

The maximum supported bit rate is 300 Mbps, which is the total combined bit rate for video, audio, and error correction data. The streams information area (figure 32, item Ä) of the bandwidth management standard controls panel shows the total transport bit rate as adjustments are made to compression and FEC.

Table 7. Typical Video Bit Rates

Resolution

Application

Profile

Suggested Mode (A)

SDI

HD-SDI

3G-SDI

Broadcast

Broadcast news

Static camera frame

 

contribution

 

media gathering

Surveillance

 

 

 

 

Camera panning

Static camera frame

Telepresence

Sports and nature

Interviews

Collaboration

 

 

 

 

Lifestyle

 

 

Video phone

 

 

 

 

 

 

 

 

 

 

High detail

High detail

Low motion

High motion

Low motion

No motion

 

 

 

 

 

 

 

PBR-F

 

PBR-F (FD)

 

Peak flow rate

 

 

 

 

 

 

 

 

 

 

 

 

 

10 to 20 Mbps

 

3 to 10 Mbps

 

500 kbps to 3 Mbps

 

 

 

 

 

 

 

50 to 90 Mbps

 

15 to 50 Mbps

 

2 to 15 Mbps

 

 

 

 

 

 

 

100 to 180 Mbps

 

30 to 100 Mbps

 

4 to 30 Mbps

 

 

 

 

 

 

The VN-Matrix 325 supports the transport of the audio data that is embedded in the video transport. Audio is available in blocks of 4 channels, with a bit rate of 2.43Mbps per pair in stereo mode. Forward error correction, which implements the recommendations defined by PRO-MPEG COP3, can be added to the audio stream to correct for packet drops on the network. Be aware, though, that forward error correction can add up to 50-percent to the bit rate overhead.

Table 8 defines the audio bit rates in Transparent mode.

Table 8. Typical Embedded Audio Bit Rates in Transparent Mode

Audio bit rate

FEC overhead (Example at 40%)

Total audio + FEC

1 group

2 group

3 group

4 group

(4 channels)

(8 Channels)

(12 channels)

(16 Channels)

 

 

 

 

16 Mbps

32 Mbps

48 Mbps

64 Mbps

 

 

 

 

6 Mbps

12 Mbps

18 Mbps

24 Mbps

 

 

 

 

22 Mbps

44 Mbps

66 Mbps

88 Mbps

 

 

 

 

The audio bit rate for Stereo mode is 2.3 Mbps. This can be further reduced with compression (see “ANC (Audio) Panel“) and item Î.

Table 9. Maximum bit rates

Application

Broadcast Contribution

Video Bit

Audio bit rate

Total

 

Camera panning

rate

(1 group + 40%

(max)

 

 

[error correction])

 

 

 

Sports and nature

 

 

 

 

 

 

 

Lifestyle

 

 

 

 

 

 

 

 

 

Resolution

 

SD

10-20 Mbps

22 Mbps

42 Mbps

 

 

 

 

 

 

 

 

HD

50 to 90 Mbps

 

112 Mbps

 

 

 

 

 

 

 

 

3G

100 to 180 Mbps

 

202 Mbps

VN-Matrix 325 Serial Digital Over IP CODEC • Operation 46

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Image 52
Extron electronic 325 manual Peak flow rate, Typical Embedded Audio Bit Rates in Transparent Mode, Maximum bit rates

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.