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AVx Videolink



Overview

AVx VideoLink is an adaptive real-time encoding process that automatically adjusts the encoding parameters of the video distribution to adapt to varying network loads, latency, and loss of packets. It provides significantly improved image quality when the underlying network is unreliable through packet loss or variable bandwidth, as is often the case with wide area networks, for example.

Use of standard video compression technologies and network protocols is fine for local area networks, where the network is generally reliable and packet loss is low.  However, for wide-area networks, composed of several layers of varying reliability, packet loss may become a significant issue.  Reliable network protocols, such as TCP/IP, can provide a mechanism for guaranteeing packet delivery but the latency that they introduce makes them unsuitable to real-time systems.  A more intelligent solution is needed: AVx VideoLink.

AVx VideoLink is a solution to the problem of unreliable networks. It implements a special encoding scheme that uses feedback from the receiving client to guide the encoding process, allowing the encode quality to be adjusted dynamically, making best use of the available network capacity.  AVx VideoLink comprises two distinct parts:
■  a server process to manage receipt of camera video and onward network distribution.
■  a relay process to monitor network performance and provide the client interface.

The server and relay processes reside at either end of the unreliable link.  Display clients can connect to the AVx VideoLink relay application using standard RTSP or ONVIF protocols, providing an effectively transparent end-to-end link from camera to display.

AVx VideoLink can be used in conjunction with other Cambridge Pixel products. For example, the RadarWatch application provides a field-proven and operator-friendly combined display of radar and multiple camera video streams. The RDR data recording and replay application can record radar video and camera video together with other data streams. RDR can be deployed near the sensors, co-located with the AVx VideoLink server, to record 'original quality' camera video that can then be replayed, at the same time as live video, across a WAN or point-to-point link for display.

Feature
■  Windows 10 compatible
■  Accepts RTSP or ONVIF camera video inputs
■  Re-encodes video for network distribution
■  Automatic adaption of encoding quality
■  Resilient video distribution
■  Channel priority support
■  Supports wide-area networks and point-to-point links
■  Client application recovers original RTSP or ONVIF data streams
■  Multi-channel, multi-client:
    •  up to 8 cameras
    •  up to 8 client

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