Detailed explanation of various networking modes of video monitoring platform

TSINGSEE Green rhino video is different according to the streaming media transmission protocol , It has a video monitoring platform that meets different needs . For example, it supports national standards GB28181 Agreed EasyGBS GB cloud service , Support RTSP/Onvif Agreed EasyNVR platform , And compatible with multiple protocols （GB28181/RTSP/Onvif/ The sea, SDK/Ehome/ Dahua SDK etc. ） Of EasyCVR Video fusion cloud platform .

With the expansion of the application of network video surveillance , More and more industries and large enterprises across regions are not only satisfied with local online monitoring , Instead, we hope that on the basis of the original local network monitoring , Realize cross regional network monitoring at the provincial level and even nationwide .TSINGSEE The video monitoring platform under Qingxi video , It also has strong flexibility in multi domain networking monitoring , It can meet the diversified scene network monitoring needs of users in different industries .

There are many networking scenarios for network video surveillance , In this paper , Let's briefly introduce .

1、 National standard networking Support, satisfy GB/T28181 Access to all platforms , At the same time, it provides a unified standard protocol interface , Seamless access to standard video monitoring platform , Cross platform implementation 、 Networking across domains . The national standard networking mode is used in the network 、 Integrate image resources between networks , And it can be connected with the national standard sharing platform of the provincial department .

1）SIP gateway SIP The gateway can realize the standardized cascade of multi-level heterogeneous platforms / interconnection , Realize signaling standardization between platforms 、 Signaling control 、 Signaling interaction 、 Signaling routing and other functions .SIP The application of gateway shields the difference of platform layer , At the same time, it can be flexibly deployed , Meet the networking needs of platforms of different scales .

2）SIP The media By deploying SIP Media services , It can push the media stream 、 distribution 、 transcoding , Output standard code stream , Shield the difference of front-end equipment .

2、SDK Connected to the Internet The video monitoring platform can be accessed through SDK The protocol is implemented on the internal platform / Access and integration of heterogeneous platforms 、 Unified dispatching management .

Provided by the built digital monitoring system in the early stage SDK The packet is connected to the front-end digital monitoring system , Realize network interconnection between platforms .

3、 Trunk networking Digital trunk refers to the video trunk used to transmit digital images between video forwarding systems , According to the network capacity , The trunk line can be set at will . Many video surveillance sharing platforms belong to a stand-alone system , Several shared platform systems are connected via analog or digital trunks （ Video encoder and network ）、 Mount networking mode 、 Video servers are interconnected by networking to form a larger scale video monitoring system , The platform has the function of digital trunk .

The trunk line management modes of the image forwarding system include ： Routing 、 Reuse 、 Lock and preempt 、 Post preemption processing . in application , The main line is likely to be occupied , And when high-level users need to view a new camera , Preemption will occur , When preempting, the preemption path is always the shortest 、 Preemption costs the least （ The highest level is the lowest ） The main line of ; meanwhile , When a high-level user locks the trunk , Ensure that low-level users do not preempt these trunk lines ; When high-level users seize the trunk line , Users who used to occupy the trunk line will get friendly notification .

From the trunk multiplexing diagram , We can see that the system reuses trunk lines . When multiple users need to watch the same video source at the same time , The system only needs one trunk line to meet this demand through trunk line multiplexing , As shown in the figure above .

The schematic diagram of trunk preemption reflects the trunk preemption in trunk management . Advanced users occupy the space from sub bureau to Municipal Bureau when viewing videos 1 The main line is watching the camera 2, Ordinary users are now looking at another camera 1 Your request was rejected by the shared platform central management server .

Each video forwarding device is equipped with several digital trunks . Configure through redundant digital trunk , Once a video forwarding device fails , Automatic routing mechanism of video forwarding system , Redundant video forwarding systems will be found , Let the video go through the digital trunk of this newly found video forwarding system .

TSINGSEE All kinds of video monitoring platforms of Qingxi video have powerful data access 、 Processing and distribution capabilities , Strong compatibility 、 High openness , Easy to deploy , Functions can be expanded flexibly , Easy integration with third parties . The platform can target a variety of complex scenarios , Using different video networking technologies , Realize the interconnection of video monitoring sharing platforms 、 Breaking the data silos 、 Realize data collaboration and management of all links , Meet more advanced business needs .