What Is a Video Bridge?

AVB is the abbreviation of Audio Video Bridging, which meets the IEEE 802.1 standard set. The representative ones are: 802.1AS; 802.1Qat; 802.1Qav; 802.1BA. A protocol developed by the AVnu Alliance.

AVB audio and video bridge

Right!

AVB is the abbreviation of Audio Video Bridging, which meets the IEEE 802.1 standard set. The representative ones are: 802.1AS; 802.1Qat; 802.1Qav; 802.1BA. A protocol developed by the AVnu Alliance.

Chinese name

Audio and video bridge

Foreign name

Audio Video Bridging

Traditional audio and video (AV) device configurations used to be single-use, point-to-point, one-way links. This dedicated connection mode results in a large amount of wiring required in professional and user applications that are difficult to manage and operate. There are several recognized mechanisms for addressing this issue. But all of these mechanisms are either non-standard, difficult to operate and configure, or otherwise inflexible and expensive. Migration to an Ethernet facility is a proven solution to the needs of professional AV equipment. However, currently, the configuration mechanism lacks flexibility and interoperability. In order to accelerate the adoption of interoperable Ethernet-based AV configurations, the IEEE has developed the IEEE802.1 audio-video bridging (AVB) standard

AVB is a series of IEEE 802.1 standards. It was developed by the Time-Sensitive Networking Task Group. It is mainly used to increase the capacity of information exchange, industry support and standardization of AV products. Audio and video bridges usually refer to switches, whose purpose is to provide time-synchronized, low-latency and guaranteed bandwidth reserved streaming media functions for audio and video data.
The goal of AVB is to transmit audio, video, and other data forms using "smart" switches that can handle AVB traffic without affecting the unified network integration. With AVB, IT managers can adopt a hybrid data network that saves time, money, and performs more efficiently as an AV system manager compared to parallel stand-alone systems. Integrating AVB technology into current IT systems is a huge step forward and will cause a fundamental shift in the principles for most IT and AV administrators designing systems.
The IEEE standards related to AVB are as follows:

802.1AS: Timing and Synchronization for Time-Sensitive Applications ^[1]

802.1Qat: Stream Reservation Protocol (SRP) Stream Reservation Protocol

802.1Qav: Forwarding and Queuing for Time-Sensitive Streams

802.1BA: Audio Video Bridging (AVB) Systems

· 1722: It is a Layer 2 transmission protocol, which is used for clock-sensitive media stream transmission in LAN. Only used between Talker and Listener.

· 1733: It is a 3-layer transmission protocol, which realizes clock-sensitive media stream transmission between different networks with the help of RTP and RTCP protocols. These two protocols are also commonly used for VoIP transmission

· P1722.1: Responsible for AVB search, identification, and connection management and control of 1722-based devices.