【ProAV Lab】introAVoIP#01 - What is AV over IP?
By Gary Zheng & Kieron Seth, Lumens
June 07, 2022 31546
▶ Introduction
AV over IP means "Audio-Visual over Internet Protocol". In principle, it transmits audio-visual data and control signals over a network such as a LAN, WAN, or the Internet. Unlike traditional AV environments that use HDMI or a dedicated AV cable, AV over IP is designed to use standard network connections and equipment to transmit and switch video and audio.
▶ Why AV over IP is trending?
According to a survey conducted by System Integrator Magazine, 84% of system integrators are embracing AV-over-IP as an AV distribution system for customers.
Are you ready to fully embrace AV-over-IP as an AV distribution for your customers?
Source: 8 AV over IP Market Trends Installers Need to Know
The major reasons are:
1. Reduce installation and ongoing maintenance costs2. Remote management of AV streams over the Internet
3. Long distance cabling: overcomes the transmission limitation of HDMI
4. Easy installation: a single CAT5e or CAT6 cable can carry AV and control signals and send power to connected devices
▶ What are the AV over IP building blocks?
First, the video and audio signals are encoded and converted into a compressed, IP-friendly format. The data is packetized into TCP or UDP format for transmission over Ethernet networks. The hardware required is as follows:
• Encoder: capture, digitize, compress and packetize the HDMI signal for streaming
• Decoder: receive the stream, de-packetize, decompress and convert back to HDMI
• IP switch: routes the encoded AV IP streams to decoders for display
• Controller: configures and manages the AV distribution network, and monitors the status of connected devices
Typical HAV/IP Setup
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