CN110213533B - Method and device for acquiring video stream monitored by video network - Google Patents

Method and device for acquiring video stream monitored by video network Download PDF

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Publication number
CN110213533B
CN110213533B CN201910390264.5A CN201910390264A CN110213533B CN 110213533 B CN110213533 B CN 110213533B CN 201910390264 A CN201910390264 A CN 201910390264A CN 110213533 B CN110213533 B CN 110213533B
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video
target
video network
network
equipment
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CN110213533A (en
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郭鹏
潘廷勇
韩杰
王艳辉
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Visionvera Information Technology Co Ltd
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Visionvera Information Technology Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/18Closed circuit television systems, i.e. systems in which the signal is not broadcast

Abstract

The application provides a method and a device for acquiring a video stream monitored by a video network. By the application, when the video network monitoring video stream recorded by the target video network video recording equipment needs to be acquired, whether the video network management terminal is in communication connection with the target video network video recording device can be directly determined based on the preset online list, if the communication connection is provided, the communication connection can be directly used for acquiring the target video network monitoring video stream recorded by the target video network video recording device, the communication connection between the video network management terminal and the target video network video recording device is not required to be established in real time, since the time duration required for the process of searching the preset online list for the target device identifier of the target video network video recording device is often less than the time duration required for at least two handshakes when establishing a communication connection, therefore, the efficiency of obtaining the target video network monitoring video stream recorded by the target video network video recording equipment can be improved.

Description

Method and device for acquiring video stream monitored by video network
Technical Field
The present application relates to the field of video networking technologies, and in particular, to a method and an apparatus for acquiring a video stream monitored by a video networking.
Background
Nowadays, in order to provide safety prevention and guarantee for work and life of people, a monitoring camera is often arranged at an important position, monitoring video streams at the important position are recorded through the monitoring camera, and then, a viewer is arranged to check whether suspicious people exist in the monitoring video streams recorded by the monitoring camera, for example, whether people are escaped is checked.
Generally, a monitoring management device is required to manage each monitoring camera, for example, to obtain a monitoring video recorded by a certain monitoring camera, but the monitoring management device needs to obtain the monitoring video recorded by the monitoring camera when the monitoring management device has a communication connection with the monitoring camera.
Disclosure of Invention
When a monitoring management device needs to be used to acquire a monitoring video recorded by a certain monitoring camera, the monitoring management device often does not know whether a communication connection exists between the monitoring management device and the monitoring camera, and therefore, in order to ensure that the monitoring video recorded by the monitoring camera can be acquired, the communication connection between the monitoring management device and the monitoring camera needs to be established in real time, and then the monitoring video recorded by the monitoring camera is acquired through the communication connection.
Therefore, when a surveillance video recorded by any surveillance camera is acquired, communication connection between the surveillance management device and the any surveillance camera needs to be established in real time, and the process of establishing communication connection usually needs to handshake at least twice, so that the process of establishing communication connection needs to consume a period of time, and the efficiency of acquiring the surveillance video recorded by the surveillance camera is low.
In order to solve the above problem, the present application shows a method and an apparatus for acquiring a video stream of a video network monitor.
In a first aspect, the present application shows a method for acquiring a video stream for monitoring video over internet, which is applied to a system for acquiring a video stream for monitoring video over internet, where the system includes a video network management terminal and a plurality of video network video recording devices, each of the video network video recording devices is used to record a video stream for monitoring video over internet, and the method is applied to the video network management terminal, and the method includes:
when a target video network monitoring video stream recorded by a target video network video recording device needs to be acquired, acquiring a target device identifier of the target video network video recording device, wherein the target video network video recording device is at least one of the plurality of video network video recording devices;
searching whether the target equipment identification exists in a preset online list; the preset online list is used for storing equipment identifications, and video network video recording equipment corresponding to each equipment identification stored in the preset online list is in communication connection with the video network management terminal;
if the target equipment identification exists in the preset online list, sending an acquisition request to the target video network video recording equipment through target communication connection between the video network management terminal and the target video network video recording equipment, wherein the acquisition request is used for acquiring video network monitoring video streams recorded by the target video network video recording equipment;
and receiving the target video network monitoring video stream returned by the target video network video recording equipment through the target communication connection.
In an optional implementation, the method further includes:
if the target equipment identification does not exist in the preset online list, establishing communication connection between the video network management terminal and the target video network video recording equipment;
sending an acquisition request to the target video network video recording device through the established communication connection, wherein the acquisition request is used for acquiring a video network monitoring video stream recorded by the target video network video recording device;
and receiving the target video network monitoring video stream returned by the target video network video recording equipment through the established communication connection.
In an optional implementation, the method further includes:
and storing the target equipment identification in the preset online list.
In an optional implementation, the method further includes:
acquiring a candidate device identifier, and trying to establish communication connection between the video network management terminal and video network video recording equipment corresponding to the candidate device identifier;
if the communication connection between the video network management terminal and the video network video recording equipment corresponding to the candidate equipment identification is successfully established, storing the candidate equipment identification in the preset online list;
and if the communication connection between the video network management terminal and the video network video recording equipment corresponding to the candidate equipment identification is not successfully established, storing the candidate equipment identification in a preset offline list.
In an optional implementation manner, the obtaining of the candidate device identifier includes:
and acquiring the equipment identifier in a preset candidate list as the candidate equipment identifier, wherein the preset candidate list stores the equipment identifier added by a user of the video network management terminal.
In an optional implementation, the method further includes:
for each equipment identifier stored in the preset online list, regularly or practically detecting whether the communication connection between the video network management terminal and the video network video recording equipment corresponding to the equipment identifier is disconnected;
and if the communication connection between the video network management terminal and the video network video recording equipment corresponding to the equipment identification is disconnected, moving the equipment identification from the preset online list to the preset offline list.
In an optional implementation, the method further includes:
for each equipment identifier stored in the preset offline list, periodically or implementing an attempt to establish communication connection between the video network management terminal and the video network video recording equipment corresponding to the equipment identifier;
and if the communication connection between the video network management terminal and the video network video recording equipment corresponding to the equipment identification is successfully established, moving the equipment identification from the preset offline list to the preset online list.
In a second aspect, the present application shows an apparatus for acquiring a video stream for monitoring video over internet, which is applied to a system for acquiring a video stream for monitoring video over internet, the system includes a video network management terminal and a plurality of video network video recording devices, each of which is used for recording a video stream for monitoring video over internet, the apparatus is applied to the video network management terminal, the apparatus includes:
the first acquisition module is used for acquiring a target equipment identifier of a target video network video recording device when a target video network monitoring video stream recorded by the target video network video recording device needs to be acquired, wherein the target video network video recording device is at least one of the plurality of video network video recording devices;
the searching module is used for searching whether the target equipment identifier exists in a preset online list; the preset online list is used for storing equipment identifications, and video network video recording equipment corresponding to each equipment identification stored in the preset online list is in communication connection with the video network management terminal;
a first sending module, configured to send, if the target device identifier exists in the preset online list, an acquisition request to the target video networking video recording device via a target communication connection between the video networking management terminal and the target video networking video recording device, where the acquisition request is used to acquire a video networking monitoring video stream recorded by the target video networking video recording device;
and the first receiving module is used for receiving the target video network monitoring video stream returned by the target video network video recording equipment through the target communication connection.
In an optional implementation, the apparatus further comprises:
the first establishing module is used for establishing communication connection between the video network management terminal and the target video network video recording equipment if the target equipment identification does not exist in the preset online list;
a second sending module, configured to send an acquisition request to the target video networking video recording device via the established communication connection, where the acquisition request is used to acquire a video networking monitoring video stream recorded by the target video networking video recording device;
and the second receiving module is used for receiving the target video network monitoring video stream returned by the target video network video recording equipment through the established communication connection.
In an optional implementation, the apparatus further comprises:
and the first storage module is used for storing the target equipment identifier in the preset online list.
In an optional implementation, the apparatus further comprises:
the second acquisition module is used for acquiring a candidate device identifier and trying to establish communication connection between the video network management terminal and the video network video recording device corresponding to the candidate device identifier;
the second storage module is used for storing the candidate equipment identifier in the preset online list if the communication connection between the video network management terminal and the video network video recording equipment corresponding to the candidate equipment identifier is successfully established;
and the third storage module is used for storing the candidate equipment identifier in a preset offline list if the communication connection between the video network management terminal and the video network video recording equipment corresponding to the candidate equipment identifier is not established successfully.
In an optional implementation manner, the second obtaining module is specifically configured to: and acquiring the equipment identifier in a preset candidate list as the candidate equipment identifier, wherein the preset candidate list stores the equipment identifier added by a user of the video network management terminal.
In an optional implementation, the apparatus further comprises:
the detection module is used for periodically or practically detecting whether the communication connection between the video network management terminal and the video network video recording equipment corresponding to the equipment identification is disconnected or not for each equipment identification stored in the preset online list;
and the first moving module is used for moving the equipment identifier from the preset online list to the preset offline list if the communication connection between the video network management terminal and the video network video recording equipment corresponding to the equipment identifier is disconnected.
In an optional implementation, the apparatus further comprises:
the second establishing module is used for periodically or practically trying to establish communication connection between the video network management terminal and the video network video recording equipment corresponding to the equipment identification for each equipment identification stored in the preset offline list;
and the second moving module is used for moving the equipment identifier from the preset offline list to the preset online list if the communication connection between the video network management terminal and the video network video recording equipment corresponding to the equipment identifier is successfully established.
The application includes the following advantages:
by the application, when the video network monitoring video stream recorded by the target video network video recording equipment needs to be acquired, whether the video network management terminal is in communication connection with the target video network video recording device can be directly determined based on the preset online list, if the communication connection is provided, the communication connection can be directly used for acquiring the target video network monitoring video stream recorded by the target video network video recording device, the communication connection between the video network management terminal and the target video network video recording device is not required to be established in real time, since the time duration required for the process of searching the preset online list for the target device identifier of the target video network video recording device is often less than the time duration required for at least two handshakes when establishing a communication connection, therefore, the efficiency of obtaining the target video network monitoring video stream recorded by the target video network video recording equipment can be improved.
Drawings
Fig. 1 is a networking schematic diagram of a video network of the present application.
Fig. 2 is a schematic diagram of a hardware structure of a node server according to the present application.
Fig. 3 is a hardware configuration diagram of an access switch of the present application.
Fig. 4 is a schematic diagram of a hardware structure of an ethernet protocol conversion gateway according to the present application.
Fig. 5 is a block diagram of a system for acquiring a surveillance video stream of a video network according to the present application.
Fig. 6 is a flowchart illustrating steps of a method for acquiring a surveillance video stream of a video network according to the present application.
Fig. 7 is a block diagram of an apparatus for acquiring a surveillance video stream of a video network according to the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description.
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 present application, 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 controlled by a layered centralized way, and the network controlled by the node server and the metropolitan area server can be in various structures such as a tree, a star, a ring and the like.
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 present application can be largely 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 incoming data packet of the CPU module 304 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, in this application 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 308 is configured by the CPU module 304, 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 video networking destination address DA of the packet, adds the ethernet MAC DA of the terminal, the MAC SA of the ethernet coordination 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 present application: 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 application is provided, following the protocol of the video network, through the application, when the video network monitoring video stream recorded by the target video network video recording equipment needs to be acquired, whether the communication connection exists between the video network management terminal and the target video network video recording equipment can be directly determined based on the preset online list, if the communication connection exists, the communication connection can be directly used for acquiring the target video network monitoring video stream recorded by the target video network video recording equipment, the communication connection between the video network management terminal and the target video network video recording equipment does not need to be established in real time, because the time length consumed in the process of searching the target equipment identification of the target video network video recording equipment in the preset online list is often less than the time length consumed by at least two times of handshaking when the communication connection is established, therefore, the efficiency of obtaining the target video network monitoring video stream recorded by the target video network video recording equipment can be improved.
Referring to fig. 5, a block diagram of a system for acquiring a video stream for monitoring video networking according to the present application is shown, the system including: the system comprises a video network management terminal 01 and a plurality of video network video recording devices 02, wherein each video network video recording device 02 is used for recording a video network monitoring video stream, the network management terminal 01 can establish communication connection with each video network video recording device 02, and fig. 5 illustrates an example in which the network management terminal 01 and at least three video network video recording devices 02 are provided with communication connection, but the example is not used for limiting the protection scope of the present application.
Referring to fig. 6, a flowchart illustrating steps of a method for acquiring a video stream monitored by a video network according to the present application is shown, where the method may be applied to the video network management terminal 01 shown in fig. 5, and the method may specifically include the following steps:
in step S101, when a target video network surveillance video stream recorded by a target video network video recording device needs to be acquired, a target device identifier of the target video network video recording device is acquired, where the target video network video recording device is at least one of a plurality of video network video recording devices;
in the process of using the video network management terminal, if a user needs to check a target video network monitoring video stream recorded by the target video network video recording device, the video network management terminal needs to be controlled to acquire the target video network monitoring video stream recorded by the target video network video recording device, then the video network management terminal is controlled to play the target video network monitoring video stream recorded by the target video network video recording device, and then the user can view the target video network monitoring video stream recorded by the target video network video recording device played by the video network management terminal.
When the video network management terminal is controlled to acquire a target video network monitoring video stream recorded by the target video network video recording device, a user can input a target device identifier of the target video network video recording device at the video network management terminal, the video network management terminal acquires the target device identifier of the target video network video recording device input by the user, and then the step S102 is executed.
In step S102, searching whether a target device identifier exists in a preset online list; the preset online list is used for storing equipment identifications, and video network video recording equipment corresponding to each equipment identification stored in the preset online list is in communication connection with the video network management terminal;
in the method, the candidate equipment identification can be obtained in advance, and then the communication connection between the video network management terminal and the video network video recording equipment corresponding to the candidate equipment identification is tried to be established; if the communication connection between the video network management terminal and the video network video recording equipment corresponding to the candidate equipment identification is successfully established, the candidate equipment identification is stored in a preset online list; and if the communication connection between the video network management terminal and the video network video recording equipment corresponding to the candidate equipment identification is not successfully established, storing the candidate equipment identification in a preset offline list.
Therefore, the video network video recording equipment corresponding to each equipment identifier stored in the preset online list is in communication connection with the video network management terminal; and the video network video recording equipment corresponding to each equipment identifier stored in the preset offline list is not in communication connection with the video network management terminal.
Therefore, if the target device identifier exists in the preset online list, it indicates that the video network video recording device and the video network management terminal have communication connection at this time, and the target video network monitoring video stream recorded by the target video network video recording device can be directly obtained by using the communication connection.
And if the target equipment identification does not exist in the preset online list, the video network video recording equipment does not have communication connection with the video network management terminal at the moment, the communication connection between the video network video recording equipment and the video network management terminal needs to be established, and then the established communication connection is used for obtaining the target video network monitoring video stream recorded by the target video network video recording equipment.
When the candidate device identifier is obtained, the device identifier in the preset candidate list may be obtained and used as the candidate device identifier, and the device identifier added by the user of the video network management terminal is stored in the preset candidate list. For example, if a user desires to add a video recording device, the device identification of the video recording device that is desired to be added may be stored in a preset candidate list.
If the target device identifier exists in the preset online list, in step S103, sending an acquisition request to the target video network video recording device via a target communication connection between the video network management terminal and the target video network video recording device, where the acquisition request is used to acquire a video network monitoring video stream recorded by the target video network video recording device;
in step S104, a target video network surveillance video stream returned by the target video network video recording device via the target communication connection is received.
By the application, when the video network monitoring video stream recorded by the target video network video recording equipment needs to be acquired, whether the video network management terminal is in communication connection with the target video network video recording device can be directly determined based on the preset online list, if the communication connection is provided, the communication connection can be directly used for acquiring the target video network monitoring video stream recorded by the target video network video recording device, the communication connection between the video network management terminal and the target video network video recording device is not required to be established in real time, since the time duration required for the process of searching the preset online list for the target device identifier of the target video network video recording device is often less than the time duration required for at least two handshakes when establishing a communication connection, therefore, the efficiency of obtaining the target video network monitoring video stream recorded by the target video network video recording equipment can be improved.
If the target device identifier does not exist in the preset online list, in step S105, establishing a communication connection between the video network management terminal and the target video network video recording device;
further, the target device identifier may be stored in a preset online list to indicate that the video network management terminal and the target video network video recording device have communication connection, if a target video network surveillance video stream recorded by the target video network video recording device needs to be acquired again later, it may be directly determined that the video network management terminal and the target video network video recording device have communication connection based on the preset online list, and then the communication connection may be directly used to acquire the target video network surveillance video stream recorded by the target video network video recording device, without establishing the communication connection between the video network management terminal and the target video network video recording device in real time, because the time consumed in the process of searching the target device identifier of the target video network video recording device in the preset online list is often less than the time consumed by at least two handshakes when establishing the communication connection, therefore, the efficiency of obtaining the target video network monitoring video stream recorded by the target video network video recording equipment can be improved.
In step S106, sending an acquisition request to the target video network video recording device via the established communication connection, where the acquisition request is used to acquire a video network surveillance video stream recorded by the target video network video recording device;
in step S107, a target video network surveillance video stream returned by the target video network video recording device via the established communication connection is received.
In this application, the communication connection between the video networking management terminal and any one of the video networking video recording devices may be disconnected due to network jitter or the like, that is, the two video networking management terminals do not have communication connection any more, in this case, if it is necessary to acquire the video networking monitoring video stream recorded by the video networking video recording device later, because the device identifier of the video networking video recording device exists in the preset online list, it may be determined that the video networking management terminal and the video networking video recording device have communication connection based on the preset online list, and then an attempt is made to acquire the video networking monitoring video stream recorded by the video networking video recording device, but in fact, the video networking management terminal and the video networking video recording device do not have communication connection at this time, and thus acquisition failure is caused.
In order to avoid the situation, for each device identifier stored in the preset online list, whether the communication connection between the video network management terminal and the video network video recording device corresponding to the device identifier is disconnected or not can be detected regularly or in an implementation manner; and if the communication connection between the video network management terminal and the video network video recording equipment corresponding to the equipment identification is disconnected, moving the equipment identification from the preset online list to the preset offline list.
Therefore, if the video networking monitoring video stream recorded by the video networking video recording device needs to be acquired later, because the device identification of the video networking video recording device does not exist in the preset online list, the fact that the video networking management terminal and the video networking video recording device do not have communication connection can be determined based on the preset online list, then the communication connection between the video networking video recording device and the video networking management terminal can be established, then the established communication connection is used for acquiring the video networking monitoring video stream recorded by the video networking video recording device, and therefore the situation of failure acquisition can be avoided.
In order to improve the efficiency of acquiring the video networking monitoring video stream recorded by each video networking video recording device, in another embodiment, for each device identifier stored in the preset offline list, an attempt may be periodically or practically made to establish a communication connection between the video networking management terminal and the video networking video recording device corresponding to the device identifier; and if the communication connection between the video network management terminal and the video network video recording equipment corresponding to the equipment identification is successfully established, the equipment identification is moved to a preset online list from a preset offline list.
Therefore, the communication connection between the video network management terminal and the video network video recording device corresponding to the device identifier can be marked, if the video network monitoring video stream recorded by the video network video recording device corresponding to the device identifier needs to be acquired again later, the communication connection between the video network management terminal and the video network video recording device corresponding to the device identifier can be directly determined based on the preset online list, and then the communication connection can be directly used for acquiring the target video network monitoring video stream recorded by the video network video recording device corresponding to the device identifier, the communication connection between the video network management terminal and the video network video recording device corresponding to the device identifier does not need to be established in real time, and the consumed time length of the process of searching the device identifier in the preset online list is often less than the consumed time length of at least two times of handshaking during the establishment of the communication connection, therefore, the efficiency of obtaining the target video network monitoring video stream recorded by the video network video recording equipment corresponding to the equipment identification can be 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 embodiments are not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the embodiments. Further, those skilled in the art will also appreciate that the embodiments described in the specification are presently preferred and that no particular act is required of the embodiments of the application.
Referring to fig. 7, a block diagram of an apparatus for acquiring a video stream for monitoring in a video network according to the present application is shown, and the apparatus is applied to an acquisition system of a video stream for monitoring in a video network, the system includes a video network management terminal and a plurality of video recording devices, each of the video recording devices is used for recording a video stream for monitoring in a video network, the apparatus is applied to the video network management terminal, and the apparatus includes:
the first obtaining module 11 is configured to obtain a target device identifier of a target video network video recording device when a target video network surveillance video stream recorded by the target video network video recording device needs to be obtained, where the target video network video recording device is at least one of the multiple video network video recording devices;
the searching module 12 is configured to search whether the target device identifier exists in a preset online list; the preset online list is used for storing equipment identifications, and video network video recording equipment corresponding to each equipment identification stored in the preset online list is in communication connection with the video network management terminal;
a first sending module 13, configured to send, if the target device identifier exists in the preset online list, an acquisition request to the target video networking video recording device via a target communication connection between the video networking management terminal and the target video networking video recording device, where the acquisition request is used to acquire a video networking monitoring video stream recorded by the target video networking video recording device;
a first receiving module 14, configured to receive the target video network surveillance video stream returned by the target video network video recording device via the target communication connection.
In an optional implementation, the apparatus further comprises:
the first establishing module is used for establishing communication connection between the video network management terminal and the target video network video recording equipment if the target equipment identification does not exist in the preset online list;
a second sending module, configured to send an acquisition request to the target video networking video recording device via the established communication connection, where the acquisition request is used to acquire a video networking monitoring video stream recorded by the target video networking video recording device;
and the second receiving module is used for receiving the target video network monitoring video stream returned by the target video network video recording equipment through the established communication connection.
In an optional implementation, the apparatus further comprises:
and the first storage module is used for storing the target equipment identifier in the preset online list.
In an optional implementation, the apparatus further comprises:
the second acquisition module is used for acquiring a candidate device identifier and trying to establish communication connection between the video network management terminal and the video network video recording device corresponding to the candidate device identifier;
the second storage module is used for storing the candidate equipment identifier in the preset online list if the communication connection between the video network management terminal and the video network video recording equipment corresponding to the candidate equipment identifier is successfully established;
and the third storage module is used for storing the candidate equipment identifier in a preset offline list if the communication connection between the video network management terminal and the video network video recording equipment corresponding to the candidate equipment identifier is not established successfully.
In an optional implementation manner, the second obtaining module is specifically configured to: and acquiring the equipment identifier in a preset candidate list as the candidate equipment identifier, wherein the preset candidate list stores the equipment identifier added by a user of the video network management terminal.
In an optional implementation, the apparatus further comprises:
the detection module is used for periodically or practically detecting whether the communication connection between the video network management terminal and the video network video recording equipment corresponding to the equipment identification is disconnected or not for each equipment identification stored in the preset online list;
and the first moving module is used for moving the equipment identifier from the preset online list to the preset offline list if the communication connection between the video network management terminal and the video network video recording equipment corresponding to the equipment identifier is disconnected.
In an optional implementation, the apparatus further comprises:
the second establishing module is used for periodically or practically trying to establish communication connection between the video network management terminal and the video network video recording equipment corresponding to the equipment identification for each equipment identification stored in the preset offline list;
and the second moving module is used for moving the equipment identifier from the preset offline list to the preset online list if the communication connection between the video network management terminal and the video network video recording equipment corresponding to the equipment identifier is successfully established.
By the application, when the video network monitoring video stream recorded by the target video network video recording equipment needs to be acquired, whether the video network management terminal is in communication connection with the target video network video recording device can be directly determined based on the preset online list, if the communication connection is provided, the communication connection can be directly used for acquiring the target video network monitoring video stream recorded by the target video network video recording device, the communication connection between the video network management terminal and the target video network video recording device is not required to be established in real time, since the time duration required for the process of searching the preset online list for the target device identifier of the target video network video recording device is often less than the time duration required for at least two handshakes when establishing a communication connection, therefore, the efficiency of obtaining the target video network monitoring video stream recorded by the target video network video recording equipment can be 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 of skill in the art, embodiments of the present application may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present application 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 application 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 application 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 application. 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 application 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 the preferred embodiment and all such alterations and modifications as fall within the true scope of the embodiments of the application.
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 device for acquiring the video stream monitored by the video network are introduced in detail, and a specific example is applied in the text to explain the principle and the implementation of the application, and the description of the embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for a person skilled in the art, according to the idea of the present application, 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 application.

Claims (7)

1. A method for acquiring a video stream monitored by a video network is applied to an acquisition system of the video stream monitored by the video network, the system comprises a video network management terminal and a plurality of video recording devices, each video recording device is used for recording the video stream monitored by the video network, the method is applied to the video network management terminal, and the method comprises the following steps:
when a target video network monitoring video stream recorded by a target video network video recording device needs to be acquired, acquiring a target device identifier of the target video network video recording device, wherein the target video network video recording device is at least one of the plurality of video network video recording devices;
searching whether the target equipment identification exists in a preset online list; the preset online list is used for storing equipment identifications, and video network video recording equipment corresponding to each equipment identification stored in the preset online list is in communication connection with the video network management terminal;
if the target equipment identification exists in the preset online list, sending an acquisition request to the target video network video recording equipment through target communication connection between the video network management terminal and the target video network video recording equipment, wherein the acquisition request is used for acquiring video network monitoring video streams recorded by the target video network video recording equipment;
receiving the target video networking monitoring video stream returned by the target video networking video recording equipment through the target communication connection;
if the target equipment identification does not exist in the preset online list, establishing communication connection between the video network management terminal and the target video network video recording equipment;
sending an acquisition request to the target video network video recording device through the established communication connection, wherein the acquisition request is used for acquiring a video network monitoring video stream recorded by the target video network video recording device;
receiving the target video network monitoring video stream returned by the target video network video recording device through the established communication connection;
the method further comprises the following steps:
for each equipment identifier stored in a preset offline list, periodically or in real time trying to establish communication connection between the video network management terminal and video network video recording equipment corresponding to the equipment identifier; the video network management terminal comprises a preset offline list, a video network management terminal and a video network video recording device, wherein the video network video recording device corresponding to each device identifier stored in the preset offline list is not in communication connection with the video network management terminal;
and if the communication connection between the video network management terminal and the video network video recording equipment corresponding to the equipment identification is successfully established, moving the equipment identification from the preset offline list to the preset online list.
2. The method of claim 1, further comprising:
and storing the target equipment identification in the preset online list.
3. The method of claim 1, further comprising:
acquiring a candidate device identifier, and trying to establish communication connection between the video network management terminal and video network video recording equipment corresponding to the candidate device identifier;
if the communication connection between the video network management terminal and the video network video recording equipment corresponding to the candidate equipment identification is successfully established, storing the candidate equipment identification in the preset online list;
and if the communication connection between the video network management terminal and the video network video recording equipment corresponding to the candidate equipment identification is not successfully established, storing the candidate equipment identification in a preset offline list.
4. The method of claim 3, wherein obtaining the candidate device identification comprises:
and acquiring the equipment identifier in a preset candidate list as the candidate equipment identifier, wherein the preset candidate list stores the equipment identifier added by a user of the video network management terminal.
5. The method of claim 3, further comprising:
for each equipment identifier stored in the preset online list, regularly or practically detecting whether the communication connection between the video network management terminal and the video network video recording equipment corresponding to the equipment identifier is disconnected;
and if the communication connection between the video network management terminal and the video network video recording equipment corresponding to the equipment identification is disconnected, moving the equipment identification from the preset online list to the preset offline list.
6. The utility model provides an acquisition device of video networking surveillance video stream which characterized in that is applied to the acquisition system of video networking surveillance video stream, the system includes video networking management terminal and a plurality of video networking video recording equipment, each video networking video recording equipment all is used for recording video networking surveillance video stream, the device is applied to in the video networking management terminal, the device includes:
the first acquisition module is used for acquiring a target equipment identifier of a target video network video recording device when a target video network monitoring video stream recorded by the target video network video recording device needs to be acquired, wherein the target video network video recording device is at least one of the plurality of video network video recording devices;
the searching module is used for searching whether the target equipment identifier exists in a preset online list; the preset online list is used for storing equipment identifications, and video network video recording equipment corresponding to each equipment identification stored in the preset online list is in communication connection with the video network management terminal;
a first sending module, configured to send, if the target device identifier exists in the preset online list, an acquisition request to the target video networking video recording device via a target communication connection between the video networking management terminal and the target video networking video recording device, where the acquisition request is used to acquire a video networking monitoring video stream recorded by the target video networking video recording device;
a first receiving module, configured to receive the target video networking surveillance video stream returned by the target video networking video recording device via the target communication connection:
the first establishing module is used for establishing communication connection between the video network management terminal and the target video network video recording equipment if the target equipment identification does not exist in the preset online list;
a second sending module, configured to send an acquisition request to the target video networking video recording device via the established communication connection, where the acquisition request is used to acquire a video networking monitoring video stream recorded by the target video networking video recording device;
the second receiving module is used for receiving the target video network monitoring video stream returned by the target video network video recording equipment through the established communication connection;
the device further comprises:
the second establishing module is used for periodically or in real time trying to establish communication connection between the video network management terminal and the video network video recording equipment corresponding to the equipment identification for each equipment identification stored in the preset offline list; the video network management terminal comprises a preset offline list, a video network management terminal and a video network video recording device, wherein the video network video recording device corresponding to each device identifier stored in the preset offline list is not in communication connection with the video network management terminal;
and the second moving module is used for moving the equipment identifier from the preset offline list to the preset online list if the communication connection between the video network management terminal and the video network video recording equipment corresponding to the equipment identifier is successfully established.
7. The apparatus of claim 6, further comprising:
and the first storage module is used for storing the target equipment identifier in the preset online list.
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