CN110086772B

CN110086772B - Method and system for acquiring monitoring video

Info

Publication number: CN110086772B
Application number: CN201910209619.6A
Authority: CN
Inventors: 李学军; 沈军; 王洪超; 么学佳
Original assignee: Visionvera Information Technology Co Ltd
Current assignee: Visionvera Information Technology Co Ltd
Priority date: 2019-03-19
Filing date: 2019-03-19
Publication date: 2021-10-08
Anticipated expiration: 2039-03-19
Also published as: CN110086772A

Abstract

The embodiment of the invention provides a method and a system for acquiring a monitoring video, wherein the method comprises the following steps: the third-party platform sends a monitoring video acquisition request and TCP monitoring port information to the video networking monitoring management platform; the video network monitoring management platform requests a target resource from a video network server according to the monitoring video acquisition request and sends TCP monitoring port information to the video network server; the third party platform establishes TCP connection with the video network server; and the video network server calls the target resource from the monitoring equipment and sends the target resource to a third-party platform through a TCP (transmission control protocol). In the method, the monitoring management platform actively establishes connection with the third-party platform, so that the possibility of connection failure when the network state is not good is reduced; and data transmission is carried out between the monitoring management platform and the third-party platform through a TCP protocol, so that the reliability of data transmission is ensured, the quality of received videos is improved, and the receiving efficiency is improved.

Description

Method and system for acquiring monitoring video

Technical Field

The invention relates to the technical field of video networking, in particular to a method and a system for acquiring a monitoring video.

Background

When a third-party platform located in the internet acquires a monitoring video from monitoring equipment of the video network, under the condition of poor internet network state, the video picture is incomplete and abnormal display is caused due to network packet loss; likewise, video can suffer from out-of-order problems, and data sent first may arrive at the receiver later than data sent later. And the staff at the third party platform may repeatedly request to send the video data because the staff does not receive the correct video data, thereby causing continuous occupation of the network channel and further reducing the transmission efficiency. Meanwhile, the video resources of the monitoring equipment of the video network are sent by the video network server, and when the third-party platform is connected with the video network server, the third-party platform is connected in a mode of requesting the monitoring management platform to return interface information. Under the condition of poor internet network state, the situation of unsmooth transmission of request and return information can also occur, so that the third-party platform and the video networking server can not be connected.

Therefore, the quality of the video received by the third-party platform from the video network is poor, and the efficiency of acquiring the monitoring video is low.

Disclosure of Invention

In view of the above, embodiments of the present invention are proposed to provide a surveillance video acquisition method and system that overcome or at least partially solve the above problems.

In order to solve the above problem, an embodiment of the present invention discloses a method for acquiring a surveillance video, which is applied to a system for acquiring a surveillance video, and the system includes: the system comprises a third-party platform, a video networking monitoring management platform and a video networking server, wherein the third-party platform, the video networking monitoring management platform and the video networking server are positioned on the Internet, the video networking monitoring management platform is in communication connection with the third-party platform and the video networking server respectively, and the method comprises the following steps:

a third-party platform positioned on the Internet sends a monitoring video acquisition request and TCP monitoring port information of the third-party platform to a video networking monitoring management platform;

the video network monitoring management platform requests a video network server for target resources according to the monitoring video acquisition request and sends the TCP monitoring port information to the video network server;

the video network server sends a connection request to the third-party platform according to the TCP monitoring port information;

the third-party platform establishes TCP connection with the video networking server;

and the video network server calls the target resource from the monitoring equipment and sends the target resource to the third-party platform through a TCP (transmission control protocol).

Optionally, the sending, by the video networking server, the target resource to the third party platform through a TCP protocol includes:

the video network server splits the target resource into at least one message segment according to a TCP protocol, and sets an identification serial number for each byte in the message segment;

and the video networking server encapsulates the message segment into a data packet in a TCP (transmission control protocol) format and sends the data packet to a TCP port corresponding to the third-party platform.

Optionally, after sending the data packet to the TCP port corresponding to the third party platform, the method further includes:

the third party platform receives the data packet in the TCP protocol format and analyzes the data packet into the at least one message segment;

the third party platform reads the identification serial number of the byte contained in the message segment and sends a confirmation message to the video network server, wherein the confirmation message comprises the identification serial number;

under the condition that the video network server receives the confirmation message, the video network server sends a next data packet to the third-party platform according to the identification serial number;

and under the condition that the video network server does not receive the confirmation message, the video network server resends the data packet in the TCP format after a set time period.

Optionally, the third party platform establishes a TCP connection with the video networking server, including:

the third party platform monitors a port corresponding to the TCP port number;

when a connection request from the video network server is monitored at the port, the third-party platform receives the connection request and establishes TCP connection with the video network server;

optionally, after the video networking server invokes the target resource from the monitoring device, the method further includes:

if the target resource is not called, the video network server returns calling failure information to the monitoring management platform;

and the monitoring management platform sends the calling failure information to the third-party platform.

The embodiment of the invention also discloses a system for acquiring the monitoring video, which comprises: the system comprises a third-party platform, a video networking monitoring and managing platform and a video networking server which are positioned on the Internet, wherein the video networking monitoring and managing platform is respectively in communication connection with the third-party platform and the video networking server;

the third party platform includes:

the first request sending module is used for sending a monitoring video acquisition request and TCP monitoring port information of the third-party platform to a video networking monitoring management platform;

the video networking monitoring management platform comprises:

the second request sending module is used for requesting a target resource from a video network server according to the monitoring video acquisition request and sending the TCP monitoring port information to the video network server;

the video network server comprises:

a connection request sending module, configured to send a connection request to the third-party platform according to the TCP monitor port information;

the third party platform includes:

the TCP connection establishing module is used for establishing TCP connection with the video networking server;

the video network server comprises:

and the target resource sending module is used for calling the target resource from the monitoring equipment and sending the target resource to the third-party platform through a TCP (transmission control protocol).

Optionally, the target resource sending module of the video network server includes:

the splitting submodule is used for splitting the target resource into at least one message segment according to a TCP protocol and setting an identification serial number for each byte in the message segment;

and the packaging and sending submodule is used for packaging the message segment into a data packet in a TCP protocol format and sending the data packet to a TCP port corresponding to the third-party platform.

Optionally, the third party platform further comprises:

the receiving and analyzing module is used for receiving the data packet in the TCP protocol format and analyzing the data packet into the at least one message segment;

a confirmation message sending module, configured to read an identification sequence number of a byte included in the segment, and send a confirmation message to the video network server, where the confirmation message includes the identification sequence number;

the video network server further comprises:

the next data packet sending module is used for sending the next data packet to the third-party platform according to the identification serial number under the condition of receiving the confirmation message;

and the retransmission module is used for retransmitting the data packet in the TCP protocol format after a set time period under the condition that the confirmation message is not received.

Optionally, the TCP connection establishing module of the third party platform includes:

the monitoring submodule is used for monitoring a port corresponding to the TCP port number;

and the TCP connection establishing submodule is used for receiving the connection request and establishing TCP connection with the video network server when the port is monitored to have the connection request from the video network server.

Optionally, the video network server further comprises:

the failure information returning module is used for returning calling failure information to the monitoring management platform by the video network server if the calling of the target resource fails;

the monitoring management platform further comprises:

and the failure information sending module is used for sending the calling failure information to the third-party platform.

The embodiment of the invention has the following advantages:

according to the method and the system for acquiring the monitoring video, provided by the embodiment of the invention, a third-party platform positioned on the internet sends a monitoring video acquisition request and TCP monitoring port information of the third-party platform to a video networking monitoring management platform; the video network monitoring management platform requests a target resource from a video network server according to the monitoring video acquisition request and sends TCP monitoring port information to the video network server; the video network server sends a connection request to a third-party platform according to the TCP monitoring port information; the third party platform establishes TCP connection with the video network server; and the video network server calls the target resource from the monitoring equipment and sends the target resource to a third-party platform through a TCP (transmission control protocol). In the method, the monitoring management platform actively establishes connection with the third-party platform, so that the transmission process of port information is reduced, and the possibility of connection failure when the network state is not good is further reduced; and the monitoring management platform and the third-party platform carry out data transmission through a TCP protocol, and the TCP protocol has mechanisms such as receiving confirmation and overtime retransmission, so that the reliability of data transmission is ensured, the quality of received videos is improved, and the receiving efficiency is improved.

Drawings

FIG. 1 is a schematic networking diagram of a video network of the present invention;

FIG. 2 is a schematic diagram of a hardware architecture of a node server according to the present invention;

fig. 3 is a schematic diagram of a hardware structure of an access switch of the present invention;

fig. 4 is a schematic diagram of a hardware structure of an ethernet protocol conversion gateway according to the present invention;

FIG. 5 is a flow chart of the steps of a surveillance video acquisition method of the present invention;

fig. 6 is a block diagram of a surveillance video acquisition system according to the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

The video networking is an important milestone for network development, is a real-time network, can realize high-definition video real-time transmission, and pushes a plurality of internet applications to high-definition video, and high-definition faces each other.

The video networking adopts a real-time high-definition video exchange technology, can integrate required services such as dozens of services of video, voice, pictures, characters, communication, data and the like on a system platform on a network platform, such as high-definition video conference, video monitoring, intelligent monitoring analysis, emergency command, digital broadcast television, delayed television, network teaching, live broadcast, VOD on demand, television mail, Personal Video Recorder (PVR), intranet (self-office) channels, intelligent video broadcast control, information distribution and the like, and realizes high-definition quality video broadcast through a television or a computer.

To better understand the embodiments of the present invention, the following description refers to the internet of view:

some of the technologies applied in the video networking are as follows:

network Technology (Network Technology)

Network technology innovation in video networking has improved over traditional Ethernet (Ethernet) to face the potentially enormous video traffic on the network. Unlike pure network Packet Switching (Packet Switching) or network Circuit Switching (Circuit Switching), the Packet Switching is adopted by the technology of the video networking to meet the Streaming requirement. The video networking technology has the advantages of flexibility, simplicity and low price of packet switching, and simultaneously has the quality and safety guarantee of circuit switching, thereby realizing the seamless connection of the whole network switching type virtual circuit and the data format.

Switching Technology (Switching Technology)

The video network adopts two advantages of asynchronism and packet switching of the Ethernet, eliminates the defects of the Ethernet on the premise of full compatibility, has end-to-end seamless connection of the whole network, is directly communicated with a user terminal, and directly bears an IP data packet. The user data does not require any format conversion across the entire network. The video networking is a higher-level form of the Ethernet, is a real-time exchange platform, can realize the real-time transmission of the whole-network large-scale high-definition video which cannot be realized by the existing Internet, and pushes a plurality of network video applications to high-definition and unification.

Server Technology (Server Technology)

The server technology on the video networking and unified video platform is different from the traditional server, the streaming media transmission of the video networking and unified video platform is established on the basis of connection orientation, the data processing capacity of the video networking and unified video platform is independent of flow and communication time, and a single network layer can contain signaling and data transmission. For voice and video services, the complexity of video networking and unified video platform streaming media processing is much simpler than that of data processing, and the efficiency is greatly improved by more than one hundred times compared with that of a traditional server.

Storage Technology (Storage Technology)

The super-high speed storage technology of the unified video platform adopts the most advanced real-time operating system in order to adapt to the media content with super-large capacity and super-large flow, the program information in the server instruction is mapped to the specific hard disk space, the media content is not passed through the server any more, and is directly sent to the user terminal instantly, and the general waiting time of the user is less than 0.2 second. The optimized sector distribution greatly reduces the mechanical motion of the magnetic head track seeking of the hard disk, the resource consumption only accounts for 20% of that of the IP internet of the same grade, but concurrent flow which is 3 times larger than that of the traditional hard disk array is generated, and the comprehensive efficiency is improved by more than 10 times.

Network Security Technology (Network Security Technology)

The structural design of the video network completely eliminates the network security problem troubling the internet structurally by the modes of independent service permission control each time, complete isolation of equipment and user data and the like, generally does not need antivirus programs and firewalls, avoids the attack of hackers and viruses, and provides a structural carefree security network for users.

Service Innovation Technology (Service Innovation Technology)

The unified video platform integrates services and transmission, and is not only automatically connected once whether a single user, a private network user or a network aggregate. The user terminal, the set-top box or the PC are directly connected to the unified video platform to obtain various multimedia video services in various forms. The unified video platform adopts a menu type configuration table mode to replace the traditional complex application programming, can realize complex application by using very few codes, and realizes infinite new service innovation.

Networking of the video network is as follows:

the video network is a centralized control network structure, and the network can be a tree network, a star network, a ring network and the like, but on the basis of the centralized control node, the whole network is controlled by the centralized control node in the network.

As shown in fig. 1, the video network is divided into an access network and a metropolitan network.

The devices of the access network part can be mainly classified into 3 types: node server, access switch, terminal (including various set-top boxes, coding boards, memories, etc.). The node server is connected to an access switch, which may be connected to a plurality of terminals and may be connected to an ethernet network.

The node server is a node which plays a centralized control function in the access network and can control the access switch and the terminal. The node server can be directly connected with the access switch or directly connected with the terminal.

Similarly, devices of the metropolitan network portion may also be classified into 3 types: a metropolitan area server, a node switch and a node server. The metro server is connected to a node switch, which may be connected to a plurality of node servers.

The node server is a node server of the access network part, namely the node server belongs to both the access network part and the metropolitan area network part.

The metropolitan area server is a node which plays a centralized control function in the metropolitan area network and can control a node switch and a node server. The metropolitan area server can be directly connected with the node switch or directly connected with the node server.

Therefore, the whole video network is a network structure with layered centralized control, and the network controlled by the node server and the metropolitan area server can be in various structures such as tree, star and ring.

The access network part can form a unified video platform (the part in the dotted circle), and a plurality of unified video platforms can form a video network; each unified video platform may be interconnected via metropolitan area and wide area video networking.

Video networking device classification

1.1 devices in the video network of the embodiment of the present invention can be mainly classified into 3 types: servers, switches (including ethernet gateways), terminals (including various set-top boxes, code boards, memories, etc.). The video network as a whole can be divided into a metropolitan area network (or national network, global network, etc.) and an access network.

1.2 wherein the devices of the access network part can be mainly classified into 3 types: node servers, access switches (including ethernet gateways), terminals (including various set-top boxes, code boards, memories, etc.).

The specific hardware structure of each access network device is as follows:

a node server:

as shown in fig. 2, the system mainly includes a network interface module 201, a switching engine module 202, a CPU module 203, and a disk array module 204;

the network interface module 201, the CPU module 203, and the disk array module 204 all enter the switching engine module 202; the switching engine module 202 performs an operation of looking up the address table 205 on the incoming packet, thereby obtaining the direction information of the packet; and stores the packet in a queue of the corresponding packet buffer 206 based on the packet's steering information; if the queue of the packet buffer 206 is nearly full, it is discarded; the switching engine module 202 polls all packet buffer queues for forwarding if the following conditions are met: 1) the port send buffer is not full; 2) the queue packet counter is greater than zero. The disk array module 204 mainly implements control over the hard disk, including initialization, read-write, and other operations on the hard disk; the CPU module 203 is mainly responsible for protocol processing with an access switch and a terminal (not shown in the figure), configuring an address table 205 (including a downlink protocol packet address table, an uplink protocol packet address table, and a data packet address table), and configuring the disk array module 204.

The access switch:

as shown in fig. 3, the network interface module mainly includes a network interface module (a downlink network interface module 301 and an uplink network interface module 302), a switching engine module 303 and a CPU module 304;

wherein, the packet (uplink data) coming from the downlink network interface module 301 enters the packet detection module 305; the packet detection module 305 detects whether the Destination Address (DA), the Source Address (SA), the packet type, and the packet length of the packet meet the requirements, and if so, allocates a corresponding stream identifier (stream-id) and enters the switching engine module 303, otherwise, discards the stream identifier; the packet (downstream data) coming from the upstream network interface module 302 enters the switching engine module 303; the data packet coming from the CPU module 204 enters the switching engine module 303; the switching engine module 303 performs an operation of looking up the address table 306 on the incoming packet, thereby obtaining the direction information of the packet; if the packet entering the switching engine module 303 is from the downstream network interface to the upstream network interface, the packet is stored in the queue of the corresponding packet buffer 307 in association with the stream-id; if the queue of the packet buffer 307 is nearly full, it is discarded; if the packet entering the switching engine module 303 is not from the downlink network interface to the uplink network interface, the data packet is stored in the queue of the corresponding packet buffer 307 according to the guiding information of the packet; if the queue of the packet buffer 307 is nearly full, it is discarded.

The switching engine module 303 polls all packet buffer queues, which in this embodiment of the present invention is divided into two cases:

if the queue is from the downlink network interface to the uplink network interface, the following conditions are met for forwarding: 1) the port send buffer is not full; 2) the queued packet counter is greater than zero; 3) obtaining a token generated by a code rate control module;

if the queue is not from the downlink network interface to the uplink network interface, the following conditions are met for forwarding: 1) the port send buffer is not full; 2) the queue packet counter is greater than zero.

The rate control module 208 is configured by the CPU module 204, and generates tokens for packet buffer queues from all downstream network interfaces to upstream network interfaces at programmable intervals to control the rate of upstream forwarding.

The CPU module 304 is mainly responsible for protocol processing with the node server, configuration of the address table 306, and configuration of the code rate control module 308.

Ethernet protocol conversion gateway：

As shown in fig. 4, the apparatus mainly includes a network interface module (a downlink network interface module 401 and an uplink network interface module 402), a switching engine module 403, a CPU module 404, a packet detection module 405, a rate control module 408, an address table 406, a packet buffer 407, a MAC adding module 409, and a MAC deleting module 410.

Wherein, the data packet coming from the downlink network interface module 401 enters the packet detection module 405; the packet detection module 405 detects whether the ethernet MAC DA, the ethernet MAC SA, the ethernet length or frame type, the video network destination address DA, the video network source address SA, the video network packet type, and the packet length of the packet meet the requirements, and if so, allocates a corresponding stream identifier (stream-id); then, the MAC deletion module 410 subtracts MAC DA, MAC SA, length or frame type (2byte) and enters the corresponding receiving buffer, otherwise, discards it;

the downlink network interface module 401 detects the sending buffer of the port, and if there is a packet, obtains the ethernet MAC DA of the corresponding terminal according to the destination address DA of the packet, adds the ethernet MAC DA of the terminal, the MAC SA of the ethernet protocol gateway, and the ethernet length or frame type, and sends the packet.

The other modules in the ethernet protocol gateway function similarly to the access switch.

A terminal:

the system mainly comprises a network interface module, a service processing module and a CPU module; for example, the set-top box mainly comprises a network interface module, a video and audio coding and decoding engine module and a CPU module; the coding board mainly comprises a network interface module, a video and audio coding engine module and a CPU module; the memory mainly comprises a network interface module, a CPU module and a disk array module.

1.3 devices of the metropolitan area network part can be mainly classified into 2 types: node server, node exchanger, metropolitan area server. The node switch mainly comprises a network interface module, a switching engine module and a CPU module; the metropolitan area server mainly comprises a network interface module, a switching engine module and a CPU module.

2. Video networking packet definition

2.1 Access network packet definition

The data packet of the access network mainly comprises the following parts: destination Address (DA), Source Address (SA), reserved bytes, payload (pdu), CRC.

As shown in the following table, the data packet of the access network mainly includes the following parts:

DA

SA

Reserved

Payload

CRC

wherein:

the Destination Address (DA) is composed of 8 bytes (byte), the first byte represents the type of the data packet (such as various protocol packets, multicast data packets, unicast data packets, etc.), there are 256 possibilities at most, the second byte to the sixth byte are metropolitan area network addresses, and the seventh byte and the eighth byte are access network addresses;

the Source Address (SA) is also composed of 8 bytes (byte), defined as the same as the Destination Address (DA);

the reserved byte consists of 2 bytes;

the payload part has different lengths according to different types of datagrams, and is 64 bytes if the datagram is various types of protocol packets, and is 32+1024 or 1056 bytes if the datagram is a unicast packet, of course, the length is not limited to the above 2 types;

the CRC consists of 4 bytes and is calculated in accordance with the standard ethernet CRC algorithm.

2.2 metropolitan area network packet definition

The topology of a metropolitan area network is a graph and there may be 2, or even more than 2, connections between two devices, i.e., there may be more than 2 connections between a node switch and a node server, a node switch and a node switch, and a node switch and a node server. However, the metro network address of the metro network device is unique, and in order to accurately describe the connection relationship between the metro network devices, parameters are introduced in the embodiment of the present invention: a label to uniquely describe a metropolitan area network device.

In this specification, the definition of the Label is similar to that of the Label of MPLS (Multi-Protocol Label Switch), and assuming that there are two connections between the device a and the device B, there are 2 labels for the packet from the device a to the device B, and 2 labels for the packet from the device B to the device a. The label is classified into an incoming label and an outgoing label, and assuming that the label (incoming label) of the packet entering the device a is 0x0000, the label (outgoing label) of the packet leaving the device a may become 0x 0001. The network access process of the metro network is a network access process under centralized control, that is, address allocation and label allocation of the metro network are both dominated by the metro server, and the node switch and the node server are both passively executed, which is different from label allocation of MPLS, and label allocation of MPLS is a result of mutual negotiation between the switch and the server.

As shown in the following table, the data packet of the metro network mainly includes the following parts:

DA

SA

Reserved

label (R)

Payload

CRC

Namely Destination Address (DA), Source Address (SA), Reserved byte (Reserved), tag, payload (pdu), CRC. The format of the tag may be defined by reference to the following: the tag is 32 bits with the upper 16 bits reserved and only the lower 16 bits used, and its position is between the reserved bytes and payload of the packet.

Based on the characteristics of the video network, one of the core concepts of the embodiment of the invention is provided, the monitoring management platform requests a target resource from the video network server and sends the TCP monitoring port information to the video network server after receiving a monitoring video acquisition request of a third-party platform according to a protocol of the video network.

Referring to fig. 5, a flowchart illustrating steps of an embodiment of a method for acquiring a surveillance video according to the present invention is shown, where the method can be applied to a system for acquiring a surveillance video, where the system includes: the system comprises a third party platform, a video networking monitoring management platform and a video networking server, wherein the third party platform, the video networking monitoring management platform and the video networking server are positioned on the Internet, and the video networking monitoring management platform is in communication connection with the third party platform and the video networking server respectively.

In the existing method for acquiring the surveillance video, after a third-party platform sends a surveillance video acquisition request to a surveillance management platform, the surveillance management platform creates a UDP port and monitors for waiting for connection of the third-party platform, and after the third-party platform is connected, the surveillance management platform sends video data to a client through a UDP protocol. Firstly, the monitoring management platform and the third-party platform belong to passive connection, namely the monitoring management platform needs to monitor and wait for the connection of the third-party platform, and only when a connection request of the third-party platform is received, the communication connection can be established. Under the condition of poor network state, the connection request cannot be received in time, and the connection cannot be established in time, so that the acquisition efficiency of the monitoring video is low; secondly, due to the unreliability of the UDP transmission protocol, when the state of the internet is not good, the network packet loss can be caused by using the UDP protocol to transmit video data, and the video picture is not completely displayed normally; the use of UDP protocols to transport data packets also presents an out-of-order problem, with data sent first possibly arriving at the receiver later than data sent later. Based on the above problems, the surveillance video acquisition method of the embodiment of the invention is provided.

The method for acquiring the monitoring video specifically comprises the following steps:

step 501, a third party platform located in the internet sends a monitoring video acquisition request and TCP monitoring port information of the third party platform to a video networking monitoring management platform.

In the embodiment of the invention, the third party platform can be a GB/T28181 national standard platform positioned on the Internet. The national standard platform is positioned in a public safety video monitoring networking system, and the system comprehensively applies technologies such as video and audio monitoring, communication, computer network, system set and the like, and can realize interconnection, intercommunication and mutual control among different devices and systems. When a third-party platform, such as a national standard platform, needs to query a monitoring video of a monitoring device located in the video network, a request needs to be sent to a monitoring management platform located in the video network. The monitoring video obtaining request may include information such as an IP address and an equipment number of the monitoring equipment that needs to be queried.

The monitoring management platform of the video network is divided into a front-end display and a back-end service, wherein the front end is also called Thangola and is responsible for displaying the whole monitoring directory, calling the monitoring video and configuring various monitoring management scheduling platforms of the video network. The backend service, also known as MServer, is responsible for the unified management of all accessed monitoring devices in the entire video network, and the docking service of the national standard (GB/T28181) platform monitoring system.

Because the monitoring management platform is passively connected with the third-party platform and the UDP protocol is used for transmitting the monitoring video with poor effect in the prior art, the embodiment of the invention adopts a mode that the monitoring management platform is actively connected with the third-party platform and adopts the TCP protocol for transmission. Therefore, in this step, when the third-party platform sends the monitoring video acquisition request, it needs to send its own TCP monitoring port information to the monitoring management platform at the same time, so that the monitoring management platform actively establishes TCP connection with the third-party platform. The third-party platform carries port information of the third-party platform in the monitoring video acquisition request, the monitoring management platform is not required to send the port information of the third-party platform to the third-party platform, the monitoring management platform can be actively connected with the third-party platform, the transmission process of the port information is reduced for one time, and the possibility of connection failure when the network state is not good is further reduced.

In one possible embodiment of the present invention, the TCP port information includes a TCP port number of the third party platform and an IP address of the third party platform.

In the TCP/IP protocol, the TCP protocol belongs to a transport layer and is commonly established above an IP layer, i.e., a network layer. While the IP layer is primarily responsible for packet transport between nodes, here network devices such as third party platforms and video networking servers. Since the IP layer is only responsible for delivering data to the node and cannot distinguish between the different applications above, TCP adds port information on its basis, the port then identifying an application on a node. Therefore, the third party platform needs to inform the opposite party of its own TCP port number and IP address to establish a TCP connection.

Step 502, the video network monitoring management platform requests a target resource from a video network server according to the monitoring video acquisition request, and sends the TCP monitoring port information to the video network server.

In the embodiment of the invention, the monitoring management platform analyzes the monitoring video acquisition request to obtain the IP address and the equipment number of the monitoring equipment included in the request. Further, the IP address and the equipment number are used for positioning the information of the video network server connected with the requested monitoring equipment, and the monitoring management platform requests the target resource from the video network server. Meanwhile, the TCP monitoring port information is also sent to the video network server, so that the video network server is convenient to establish connection with a third-party platform.

Step 503, the video networking server sends a connection request to the third party platform according to the TCP listening port information.

Specifically, the video network server sends a connection request to a network node where the third-party platform is located according to the IP address of the third-party platform in the TCP monitoring port information, and then sends a connection request to a TCP port of the network node according to a TCP port number in the TCP monitoring port information.

Step 504, the third party platform establishes a TCP connection with the video networking server.

And after receiving the connection request, the third-party platform establishes TCP connection with the video networking server.

In one possible embodiment of the present invention, step 504 includes the following sub-steps 5041-5042:

and a substep 5041, monitoring a port corresponding to the TCP port number by the third party platform.

Specifically, the process of establishing the TCP listening socket by the third party platform may be: and calling a socket function to create a socket, binding the socket to the TCP port number, and calling a listen function to monitor the connection request. At this point, the socket is listening and is ready to accept the connection.

And a substep 5042, when it is monitored that the port has a connection request from the video network server, the third party platform accepts the connection request and establishes a TCP connection with the video network server.

After monitoring the connection request, the third-party platform uses an accept function to accept the connection, so that the TCP connection is established with the video network server through a TCP port. The third party platform may send a response message to the video networking server that the connection has been accepted.

And 505, the video network server calls the target resource from the monitoring equipment and sends the target resource to the third-party platform through a TCP (transmission control protocol).

And the video network server analyzes the monitoring video acquisition request to obtain target monitoring equipment information contained in the request, further calls a target resource from the target monitoring equipment, and sends the target resource to the third-party platform through a TCP (transmission control protocol).

Both TCP and UDP belong to the transport layer and are installed above the IP layer (network layer). Since the IP layer is only responsible for delivering data to the node and cannot distinguish between the different applications above, the TCP and UDP protocols add port information on their basis, a port identifying an application on a node. Apart from adding port information, the UDP protocol basically does not perform any processing on data at the IP layer. The TCP protocol also incorporates more sophisticated transmission controls, such as a sliding data transmission Window (Slice Window), and a receive acknowledgement and retransmission mechanism to achieve reliable delivery of data. No matter what stable TCP data flow is seen by the application layer, the following IP packets are transmitted one by one, and data reassembly by the TCP protocol is required.

In one possible embodiment of the invention, step 505 includes the following sub-steps 5051-5052:

substep 5051, the video networking server splits the target resource into at least one segment according to the TCP protocol, and sets an identification sequence number for each byte in the segment.

The TCP layer is a transport layer located above the IP layer and below the application layer. The application layer of the server of the video network sends a target resource to the TCP layer in the form of a data stream in 8-bit byte representation for inter-network transmission. TCP splits a data stream into segments of appropriate length, where the length of the segments is limited by the Maximum Transmission Unit (MTU) of the data link layer of the network to which the computer is connected. In order to ensure that no packet is lost, TCP identifies a sequence number for each byte, and the sequence number also ensures the in-sequence reception of the data packets transmitted to the third party platform.

In sub-step 5052, the video networking server encapsulates the segment into a data packet in a TCP protocol format, and sends the data packet to a TCP port corresponding to the third party platform.

The TCP layer of the video networking server passes the split and identified segments to the IP layer, which passes the packets over the network to the TCP layer of the third party platform.

In one possible embodiment of the present invention, after sub-step 5052, the following step a 1-step a4 are also included:

step a1, the third party platform receives the data packet in TCP protocol format and parses the data packet into the at least one segment.

Step A2, the third party platform reads the identification serial number of the byte contained in the segment and sends a confirmation message to the video network server, the confirmation message includes the identification serial number;

step A3, when the video network server receives the confirmation message, the video network server sends the next data packet to the third party platform according to the identification serial number;

step A4, in case the said video network server does not receive the said confirmation message, the said video network server resends the said TCP formatted data packet after the set time period.

In the embodiment of the invention, after receiving a data packet, a TCP layer of a third-party platform removes an encapsulation layer of the data packet, strips out individual segments, then reads an identification sequence number of a byte contained in the segment, and sends back a corresponding Acknowledgement (ACK) to the successfully received byte by the TCP layer, wherein the acknowledgement message contains the identification sequence number of the last byte received. And after receiving the confirmation message, the TCP layer of the video network server sends a character data packet starting from the next sequence number with the identification sequence number being the last byte number to the third-party platform. If the server of the video network does not receive the confirmation within the reasonable Round Trip Time (RTT), the round trip time can be preset according to the actual situation, and the corresponding data is retransmitted. In addition, TCP uses a checksum function to check whether the data is erroneous; both at the time of transmission and reception, are calculated and checked.

In one possible embodiment of the present invention, the following steps A5-A6 are further included after step 505:

step A5, if the target resource is unsuccessfully called, the video network server returns calling failure information to the monitoring management platform.

If the target resource is unsuccessfully called by the video network server due to the communication connection fault of the target monitoring equipment, the hardware fault or the software fault of the target monitoring equipment and the like, in order to enable the monitoring management platform to timely know the calling progress of the target resource and the fault condition of the target monitoring equipment, the video network server returns calling failure information to the monitoring management platform. The information may include a reason for the call failure. So that the monitoring management platform calls the working personnel to repair the fault problem in time.

Step A6, the monitoring management platform sends the calling failure information to the third party platform.

In order to enable the third-party platform to timely know the transfer success or failure information of the target resource and avoid unnecessary waiting cost of the third-party platform, the monitoring management platform also sends the transfer failure information to the third-party platform.

In summary, in the embodiment of the present invention, a third party platform located on the internet sends a monitoring video acquisition request and TCP monitoring port information of the third party platform to a video network monitoring management platform; the video network monitoring management platform requests a target resource from a video network server according to the monitoring video acquisition request and sends TCP monitoring port information to the video network server; the video network server sends a connection request to a third-party platform according to the TCP monitoring port information; the third party platform establishes TCP connection with the video network server; and the video network server calls the target resource from the monitoring equipment and sends the target resource to a third-party platform through a TCP (transmission control protocol). In the method, the monitoring management platform actively establishes connection with the third-party platform, so that the transmission process of port information is reduced, and the possibility of connection failure when the network state is not good is further reduced; and the monitoring management platform and the third-party platform carry out data transmission through a TCP protocol, and the TCP protocol has mechanisms such as receiving confirmation and overtime retransmission, so that the reliability of data transmission is ensured, the quality of received videos is improved, and the receiving efficiency is improved.

It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.

Referring to fig. 6, there is shown a block diagram of a surveillance video capturing system according to the present invention, the system 600 includes: the system comprises a third-party platform 601, a video network monitoring and managing platform 602 and a video network server 603, wherein the third-party platform 601, the video network monitoring and managing platform 602 and the video network server 603 are positioned on the internet, and the video network monitoring and managing platform 602 is respectively in communication connection with the third-party platform 601 and the video network server 603;

the third party platform 601 includes:

a first request sending module 6011, configured to send a monitoring video acquisition request and TCP monitoring port information of the third-party platform to a video networking monitoring management platform;

the video networking monitor management platform 602 includes:

a second request sending module 6021, configured to request a target resource from a video networking server according to the monitoring video acquisition request, and send the TCP monitoring port information to the video networking server;

the video network server 603 includes:

a connection request sending module 6031, configured to send a connection request to the third-party platform according to the TCP listening port information;

the third party platform 601 includes:

a TCP connection establishing module 6012, configured to establish a TCP connection with the video networking server;

the video network server 603 includes:

and a target resource sending module 6032, configured to invoke the target resource from the monitoring device, and send the target resource to the third-party platform through a TCP protocol.

Optionally, the target resource sending module 6032 of the internet of view server 603 includes:

Optionally, the third party platform 601 further includes:

the video networking server 603 further comprises:

Optionally, the TCP connection establishing module 6012 of the third party platform 601 includes:

Optionally, the internet of view server 603 further includes:

the monitoring management platform further comprises:

In the system for acquiring the monitoring video, which is provided by the embodiment of the invention, a third-party platform positioned on the internet sends a monitoring video acquisition request and TCP monitoring port information of the third-party platform to a video networking monitoring management platform; the video network monitoring management platform requests a target resource from a video network server according to the monitoring video acquisition request and sends TCP monitoring port information to the video network server; the video network server sends a connection request to a third-party platform according to the TCP monitoring port information; the third party platform establishes TCP connection with the video network server; and the video network server calls the target resource from the monitoring equipment and sends the target resource to a third-party platform through a TCP (transmission control protocol). In the method, the monitoring management platform actively establishes connection with the third-party platform, so that the transmission process of port information is reduced, and the possibility of connection failure when the network state is not good is further reduced; and the monitoring management platform and the third-party platform carry out data transmission through a TCP protocol, and the TCP protocol has mechanisms such as receiving confirmation and overtime retransmission, so that the reliability of data transmission is ensured, the quality of received videos is improved, and the receiving efficiency is improved.

For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.

The method and the system for acquiring the monitoring video provided by the invention are described in detail, and the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A method for acquiring a surveillance video is applied to a system for acquiring the surveillance video, and the system comprises: the system comprises a third-party platform, a video networking monitoring management platform and a video networking server, wherein the third-party platform, the video networking monitoring management platform and the video networking server are positioned on the Internet, the video networking monitoring management platform is in communication connection with the third-party platform and the video networking server respectively, and the method comprises the following steps:

the third-party platform establishes TCP connection with the video network server when monitoring the connection request;

2. The method of claim 1, wherein the video networking server sends the target resource to the third party platform via a TCP protocol, comprising:

3. The method according to claim 2, further comprising, after sending the data packet to the TCP port corresponding to the third-party platform:

4. The method of claim 2, wherein the third party platform establishes a TCP connection with the video networking server, comprising:

the third party platform monitors a port corresponding to the TCP port number;

and when the port is monitored to have a connection request from the video network server, the third-party platform receives the connection request and establishes TCP connection with the video network server.

5. The method of claim 1, further comprising, after the visual networking server invokes the target resource from a monitoring device:

6. A surveillance video acquisition system, comprising: the system comprises a third-party platform, a video networking monitoring and managing platform and a video networking server which are positioned on the Internet, wherein the video networking monitoring and managing platform is respectively in communication connection with the third-party platform and the video networking server;

the third party platform includes:

the video networking monitoring management platform comprises:

the video network server comprises:

the third party platform includes:

the TCP connection establishing module is used for establishing TCP connection with the video network server when the connection request is monitored;

the video network server comprises:

7. The system of claim 6, wherein the target resource sending module of the video network server comprises:

8. The system of claim 7, wherein the third party platform further comprises:

the video network server further comprises:

9. The system according to claim 7, wherein the TCP connection establishment module of the third party platform comprises:

10. The system of claim 6, wherein the video networking server further comprises:

the monitoring management platform further comprises: