CN109525663B - Video data display method and system - Google Patents

Video data display method and system Download PDF

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Publication number
CN109525663B
CN109525663B CN201811360809.XA CN201811360809A CN109525663B CN 109525663 B CN109525663 B CN 109525663B CN 201811360809 A CN201811360809 A CN 201811360809A CN 109525663 B CN109525663 B CN 109525663B
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video
video data
node server
information
network
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CN109525663A (en
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李阔
沈军
刘彦辉
孙志强
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Hainan Qiantang Shilian Information Technology Co.,Ltd.
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Visionvera Information Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • H04L67/146—Markers for unambiguous identification of a particular session, e.g. session cookie or URL-encoding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/21—Server components or server architectures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/21—Server components or server architectures
    • H04N21/218—Source of audio or video content, e.g. local disk arrays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements

Abstract

The embodiment of the invention provides a method and a system for displaying video data, wherein the method comprises the following steps: the second video network node server receives video data and related information from the first video network node server, wherein the related information comprises source information of a plurality of monitoring terminals; the second video network node server adds source identification to the video data according to the source information of the plurality of monitoring terminals; the second video network node server receives display request information from the video network client, wherein the display request information comprises display mode information; and the second video networking node server returns video data to the video networking client according to the display mode information, the display priority of the source identifier and the downlink communication link configured for the video networking client, and the video networking client is used for displaying the video data. The embodiment of the invention avoids displaying excessive video data, saves the network transmission bandwidth of the video network and also lightens the workload of operators.

Description

Video data display method and system
Technical Field
The invention relates to the technical field of video networking, in particular to a video data display method and a video data display system.
Background
The video network is a special network for transmitting high-definition video and a special protocol at high speed based on Ethernet hardware, is a higher-level form of the Internet and is a real-time network.
In recent years, video networking has become more widely used in various industries and fields, for example, video surveillance based on video networking has been applied to public security systems. Meanwhile, the video network is gradually popularized to common social enterprises and the like. Thus, in some areas the following may be the case: the video monitoring equipment of the public security system and the video monitoring equipment of the common social enterprises cover the same monitoring area. When the monitoring area is monitored and checked by videos, the video data of the video monitoring devices respectively belonging to two sources (a public security system and a social enterprise) can be accessed to the monitoring client, so that the network transmission bandwidth of the video networking is wasted, and for an operator of the monitoring client, the video data of the video monitoring devices of the two sources need to be checked at the same time, so that the workload of the operator is increased.
Disclosure of Invention
In view of the above problems, embodiments of the present invention are proposed to provide a method for presenting video data and a corresponding system for presenting video data 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 displaying video data, where the method is applied to a video network, where the video network includes a first video network node server, a second video network node server and a video network client, the second video network node server communicates with the first video network node server and the video network client, respectively, and the first video network node server is used to connect multiple monitoring terminals, and the method includes: the second video networking node server receives video data from the first video networking node server and relevant information of the video data, wherein the relevant information comprises source information of a plurality of monitoring terminals; the second video network node server adds a source identifier to the video data according to the source information of the monitoring terminals; the second video network node server receives display request information from the video network client, wherein the display request information comprises display mode information; and the second video network node server returns video data corresponding to the display request information to the video network client according to the display mode information, the display priority of the source identifier and a downlink communication link configured for the video network client, and the video network client is used for displaying the corresponding video data.
Optionally, the adding, by the second node server of the video network, a source identifier to the video data according to the source information of the plurality of monitoring terminals includes: when the source information of the monitoring terminal is a preset first source, the second video networking node server adds a source identifier to the video data as a preset first identifier; when the source information of the monitoring terminal is a preset second source, the second video networking node server adds a source identifier to the video data as a preset second identifier; wherein the display priority of the first identifier is higher than the display priority of the second identifier.
Optionally, the display request information further includes number information of a monitoring area to which the video data to be displayed belongs; the display mode information is merging mode information or splitting mode information; the second node server of the video network returns the video data corresponding to the display request information to the client of the video network according to the display mode information, the display priority of the source identifier and the downlink communication link configured for the client of the video network, and the method comprises the following steps: when the second video networking node server determines that the video data in the monitoring area corresponding to the display request information are first video data and second video data according to the serial number information, if the display mode information is the merging mode information, the first video data are returned to the video networking client according to a downlink communication link configured for the video networking client; if the display mode information is the splitting mode information, returning the first video data and/or the second video data to the video network client according to a downlink communication link configured for the video network client; wherein the source identifier of the first video data is the first identifier, and the source identifier of the second video data is the second identifier.
Optionally, the second node server of the video network returns the first video data and/or the second video data to the video network client according to a downlink communication link configured for the video network client, including: the second video networking node server judges whether the monitoring terminal to which the first video data belongs and the monitoring terminal to which the second video data belongs are in an online state or not; and the second video networking node server returns the first video data and/or the second video data corresponding to the monitoring terminal in the online state to the video networking client according to a downlink communication link configured for the video networking client.
Optionally, after the second node server of the video network adds a source identifier to the video data according to the source information of the plurality of monitoring terminals, the method further includes: and the second video network node server establishes a corresponding relation between the video data and the source identifier, and stores the video data, the source identifier and the corresponding relation in a preset database.
The embodiment of the invention also discloses a video data display system, which is applied to the video network, wherein the video network comprises a first video network node server, a second video network node server and a video network client, the second video network node server is respectively communicated with the first video network node server and the video network client, the first video network node server is used for connecting a plurality of monitoring terminals, and the second video network node server comprises: the receiving module is used for receiving video data from the first video networking node server and relevant information of the video data, wherein the relevant information comprises source information of a plurality of monitoring terminals; the adding module is used for adding source identifiers to the video data according to the source information of the plurality of monitoring terminals; the receiving module is further configured to receive display request information from the video networking client, where the display request information includes display mode information; and the returning module is used for returning the video data corresponding to the display request information to the video networking client according to the display mode information, the display priority of the source identifier and a downlink communication link configured for the video networking client, and the video networking client is used for performing display operation on the corresponding video data.
Optionally, the adding module is configured to add a source identifier as a preset first identifier to the video data when the source information of the monitoring terminal is a preset first source; when the source information of the monitoring terminal is a preset second source, adding a source identifier as a preset second identifier to the video data; wherein the display priority of the first identifier is higher than the display priority of the second identifier.
Optionally, the display request information further includes number information of a monitoring area to which the video data to be displayed belongs; the display mode information is merging mode information or splitting mode information; the return module includes: the video data determining module is used for determining video data in a monitoring area corresponding to the display request information according to the number information; the video data returning module is used for returning the first video data to the video network client according to a downlink communication link configured for the video network client if the display mode information is the merging mode information when the video data determining module determines that the video data in the monitoring area corresponding to the display request information is the first video data and the second video data according to the serial number information; if the display mode information is the splitting mode information, returning the first video data and/or the second video data to the video network client according to a downlink communication link configured for the video network client; wherein the source identifier of the first video data is the first identifier, and the source identifier of the second video data is the second identifier.
Optionally, the video data returning module is configured to determine whether a monitoring terminal to which the first video data belongs and a monitoring terminal to which the second video data belongs are in an online state; and returning the first video data and/or the second video data corresponding to the monitoring terminal in the online state to the video network client according to a downlink communication link configured for the video network client.
Optionally, the second internet of view node server further comprises: and the storage module is used for establishing a corresponding relation between the video data and the source identifier after the adding module adds the source identifier to the video data according to the source information of the plurality of monitoring terminals, and storing the video data, the source identifier and the corresponding relation in a preset database.
The embodiment of the invention has the following advantages:
the embodiment of the invention is applied to the video network, and the video network can comprise a first video network node server, a second video network node server and a video network client, wherein the second video network node server is respectively communicated with the first video network node server and the video network client, and the first video network node server is used for connecting a plurality of monitoring terminals.
In the embodiment of the invention, the first video network node server manages the connected multiple monitoring terminals, accesses the video data of the multiple monitoring terminals and transmits the video data of the multiple monitoring terminals to the second video network node server. Meanwhile, the first video network node server can also set related information for the video data of the plurality of monitoring terminals and transmit the related information of the video data of the plurality of monitoring terminals to the second video network node server. The related information of the video data may include source information of a plurality of monitoring terminals. The second video network node server may add a corresponding source identifier to the video data of each monitoring terminal according to the source information of the plurality of monitoring terminals. The video network client side can send display request information to the second video network node server, and the display request information comprises display mode information. And the second video network node server returns video data corresponding to the display request information to the video network client according to the display mode information, the display priority of the source identifier and the downlink communication link configured for the video network terminal. And the video network client performs display operation on the received video data.
According to the embodiment of the invention, by applying the characteristics of the video network, the first video network node server can access the video data of a plurality of monitoring terminals and transmit the video data and the related information of the video data to the second video network node server. And the second video network node server adds a source identifier for the received video data, receives the display request information of the video network client, and then returns the video data to the video network client according to the display mode information, the display priority of the source identifier and the like in the display request information so that the video network client can display the video data. The embodiment of the invention can display the video data according to the display mode information and the display priority of the source identification of the video data, thereby avoiding displaying excessive video data, saving the network transmission bandwidth of the video network and reducing the workload of operators.
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 flowchart illustrating steps of a method for displaying video data according to an embodiment of the present invention;
FIG. 6 is a schematic design diagram of a method for displaying video surveillance resources based on video networking according to the present invention;
fig. 7 is a block diagram of a second node server of the video network in the embodiment of the system for displaying video data of 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 internet of vision technology employs network Packet Switching to satisfy the demand of Streaming (which is interpreted as Streaming, continuous broadcasting, and is a data transmission technology that changes received data into a stable continuous stream and continuously transmits the stream, so that the sound heard or image seen by the user is very smooth, and the user can start browsing on the screen before the whole data is transmitted). 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 (circled part), 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 (downstream network interface module 301, upstream network interface module 302), the switching engine module 303, and the CPU module 304 are mainly included.
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, 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, 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) and obtaining the token generated by the 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, acquires 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 MACSA 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 3 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
the Destination Address (DA) is composed of 8 bytes (byte), the first byte represents the type of the data packet (e.g. various protocol packets, multicast data packets, unicast data packets, etc.), there are at most 256 possibilities, 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 types of different datagrams, and is 64 bytes if the type of the datagram is a variety of protocol packets, or is 1056 bytes if the type of the datagram is a unicast packet, but 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.
The definition of the label in this specification is similar to the definition of the label of Multi-Protocol label switching (MP L S), and assuming that there are two connections between device a and device B, there are 2 labels for the packet from device a to device B, and there are 2 labels for the packet from device B to device a. the label is divided into an incoming label and an outgoing label, and assuming that the label (incoming label) of the packet entering device a is 0x0000, the label (outgoing label) of the packet leaving device a may become 0x 0001.
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, and the first video network node server accesses and manages the video data of the monitoring terminal and sends the video data and the related information of the video data to the second video network node server according to the protocol of the video network. And the second video network node server adds a corresponding source identifier for the video data, receives the display request information of the video network client, and returns the video data to the video network client according to the display mode information in the display request information and the display priority of the source identifier so that the video network client performs display operation on the received video data.
Referring to fig. 5, a flowchart illustrating steps of an embodiment of a method for displaying video data according to the present invention is shown, where the method may be applied to an internet of view, and the internet of view may include a first internet of view node server, a second internet of view node server, and an internet of view client, where the second internet of view node server is respectively in communication with the first internet of view node server and the internet of view client, and the first internet of view node server is used to connect a plurality of monitoring terminals. The method specifically comprises the following steps:
in step 501, a second node server of the video network receives video data and related information of the video data from a first node server of the video network, wherein the related information comprises source information of a plurality of monitoring terminals.
In the embodiment of the present invention, the first node server of the video networking may be a monitoring access server of the video networking, which is used for connecting monitoring terminals from different sources and managing video data of each monitoring terminal, and specifically may include setting relevant information of the video data of each monitoring terminal. Specifically, the related information may include, but is not limited to: video networking number information, source information, belonging monitoring area information, whether to start the patrol, threshold information, maintainer contact information and the like. The embodiment of the present invention does not specifically limit the content of the related information of the video data.
Step 502, the second video network node server adds a source identifier to the video data according to the source information of the plurality of monitoring terminals.
In the embodiment of the invention, after the second video networking node server receives the video data, the source information is extracted from the related information of the video data, and then the corresponding source identifier is added to each video data according to the source information of each video data.
In a preferred embodiment of the present invention, the source information of the video data can be classified into the following two types: a first source (e.g., "public security system") and a second source (e.g., "social enterprise"). The embodiment of the present invention does not specifically limit the type of the source information of the video data. If the source information of certain video data is a first source, the second video network node server adds a source identifier as a first identifier for the video data; and if the source information of certain video data is a second source, the second video network node server adds a source identifier as a second identifier for the video data. It should be noted that the first identifier and the second identifier are only one representation of source information representing video data, and may be any character, icon, and the like, and the content, the form, and the like of the first identifier and the second identifier are not particularly limited in the embodiment of the present invention. The second node server of the video network may set a presentation priority of each source identifier, in addition to adding the source identifier to the video data, for example, the second node server of the video network may set a presentation priority of the first identifier higher than a presentation priority of the second identifier. It can be understood that, when the video data of the first identifier and the video data of the second identifier need to be presented, the video data of the first identifier is preferentially presented.
In a preferred embodiment of the present invention, after the second node server of the video network adds the source identifier to the video data, a corresponding relationship between the video data and the source identifier may be further established, and the received video data, the added source identifier, and the established corresponding relationship are stored in a preset database. For example, the second video networking node server receives video data V1 and V2, adds a first identifier B1 to video data V1, adds a second identifier B2 to video data V2, establishes a correspondence G1 between video data V1 and the first identifier B1, establishes a correspondence G2 between video data V2 and the second identifier B2, saves video data V1 and V2, the first identifiers B1 and B2, and the correspondences G1 and G2 in the database. When the second node server of the video network queries some video data in the database, the source identifier of the video data can be determined according to the corresponding relationship between the video data and the source identifier.
In step 503, the second node server of the video network receives the display request information from the video network client, where the display request information includes the display mode information.
In the embodiment of the present invention, the video networking client may be a personal computer, a smart phone, a tablet computer, and the like, and the type, model, configuration, and the like of the video networking client are not particularly limited in the embodiment of the present invention. The method includes that an operator can execute relevant operations on a video network client to generate display request information, for example, the operator can select a monitoring video of a certain monitoring area in a monitoring list on the video network client, namely a target monitoring area is selected, video data of two sources exist in the target monitoring area, the operator can also select display modes of the video data of the two sources through display options, the video network client can generate the display request information according to the number information and the display mode information of the target monitoring area, and the display request information is sent to a second video network node server.
And step 504, the second node server of the video networking returns the video data corresponding to the display request information to the video networking client according to the display mode information, the display priority of the source identifier and the downlink communication link configured for the video networking client, so that the video networking client performs display operation on the received video data.
In the embodiment of the present invention, the display mode information may be merging mode information or splitting mode information, specifically, the merging mode information may be represented by a character string "001", and the splitting mode information may be represented by a character string "002".
In a preferred embodiment of the present invention, when the second node server of the video networking returns the video data corresponding to the display request information to the video networking client according to the display mode information, the display priority of the source identifier, and the downlink communication link configured to the video networking client, the second node server of the video networking may determine the video data in the monitoring area corresponding to the display request information according to the number information. The technical scheme of the embodiment of the invention is only explained by taking the video data of two sources in the determined monitoring area as an example, and the video data of one source can be directly displayed under the condition that the video data of only one source exists in the determined monitoring area. When the second video network node server determines that the video data in the monitoring area are the first video data and the second video data according to the number information, the source identifier of the first video data is the first identifier, and the source identifier of the second video data is the second identifier.
And if the display mode information is the merging mode information, returning the first video data to the video network client according to a downlink communication link configured for the video network client, and displaying the first video data by the video network client. That is to say, when the presentation mode is the merging mode, the video data with the higher presentation priority of the source identifier in the video data of the two sources is returned to the video network client, and the video network client presents the video data with the higher presentation priority.
And if the display mode information is the splitting mode information, returning the first video data and/or the second video data to the video network client according to a downlink communication link configured for the video network client, and displaying the first video data and/or the second video data by the video network client. That is to say, when the display mode is the split mode, the video data from the two sources are both returned to the video network client, and the video network client displays the video data from the two sources at the same time. And when the display mode information is the splitting mode information, the second video networking node server judges whether the monitoring terminal to which the first video data belongs and the monitoring terminal to which the second video data belongs are in an online state or not before returning the video data to the video networking client, so that the first video data and/or the second video data corresponding to the monitoring terminal in the online state are/is returned to the video networking client according to a downlink communication link configured for the video networking client.
For example, the second video network node server determines, according to the number information, that the video data in the monitored area corresponding to the presentation request information are the first video data D1 and the second video data D2, the source of the first video data D1 is identified as the first identifier B1, and the source of the second video data D2 is identified as the second identifier B2. When the display mode is the merge mode, one of the first video data D1 and the second video data D2 needs to be selectively displayed, and specifically, the video data with a higher display priority can be selectively displayed, because the display priority of the first identifier B1 of the first video data D1 is higher than the display priority of the second identifier B2 of the second video data D2, the second video network node server sends the first video data D1 to the video network client, and the video network client displays the first video data D1 and does not display the second video data D2. When the display mode is the split mode, the first video data D1 and the second video data D2 need to be displayed, but the first video data D1 and the second video data D2 need to be displayed only when the monitor terminal Z1 to which the first video data D1 belongs and the monitor terminal Z2 to which the second video data D2 belongs are both in an online state. If the monitoring terminal Z1 is in an offline state and the monitoring terminal Z2 is in an online state, the second video network node server sends the second video data D2 to the video network client, and the video network client displays the second video data D2 and does not display the first video data D1. Similarly, if the monitoring terminal Z1 is in an online state and the monitoring terminal Z2 is in an offline state, the second node server of the video network sends the first video data D1 to the client of the video network, and the client of the video network displays the first video data D1 and does not display the second video data D2. For the situation that the monitoring terminals Z1 and Z2 are both in the online state, the second video network node server sends the first video data D1 and the second video data D2 to the video network client, and the video network client displays the first video data D1 and the second video data D2.
In this practical application, the video network is a network with a centralized control function, and includes a main control server and a lower level network device, where the lower level network device includes a terminal, and one of the core concepts of the video network is that a table is configured for a downlink communication link of a current service by notifying a switching device by the main control server, and then a data packet is transmitted based on the configured table.
Namely, the communication method in the video network includes:
the main control server configures a downlink communication link of the current service; and transmitting the data packet of the current service sent by the source terminal to a target terminal (such as a video network client) according to a downlink communication link.
In the embodiment of the present invention, configuring the downlink communication link of the current service includes: informing the switching equipment related to the downlink communication link of the current service to allocate a table; further, transmitting according to the downlink communication link includes: the configured table is consulted, and the switching equipment transmits the received data packet through the corresponding port.
In particular implementations, the services include unicast communication services and multicast communication services. Namely, whether multicast communication or unicast communication, the core concept of the table matching-table can be adopted to realize communication in the video network.
As mentioned above, the video network includes an access network portion, in which the master server is a node server and the lower-level network devices include an access switch and a terminal.
For the unicast communication service in the access network, the step of configuring the downlink communication link of the current service by the master server may include the following steps:
and a substep S11, the main control server obtains the downlink communication link information of the current service according to the service request protocol packet initiated by the source terminal, wherein the downlink communication link information includes the downlink communication port information of the main control server and the access switch participating in the current service.
In the substep S12, the main control server sets a downlink port to which a packet of the current service is directed in a packet address table inside the main control server according to the downlink communication port information; and sending a port configuration command to the corresponding access switch according to the downlink communication port information of the access switch.
In sub-step S13, the access switch sets the downstream port to which the packet of the current service is directed in its internal packet address table according to the port configuration command.
For multicast communication services (such as video conference and video monitoring) in the access network, the step of the master server acquiring downlink communication link information of the current service may include the following sub-steps:
in the substep S21, the main control server obtains a service request protocol packet initiated by the target terminal and applying for the multicast communication service, wherein the service request protocol packet includes service type information, service content information and an access network address of the target terminal; wherein, the service content information includes a service number.
And a substep S22, the main control server extracts the access network address of the source terminal in a preset content-address mapping table according to the service number.
In the substep of S23, the main control server obtains the multicast address corresponding to the source terminal and distributes the multicast address to the target terminal; and acquiring the communication link information of the current multicast service according to the service type information and the access network addresses of the source terminal and the target terminal.
Based on the above description of the embodiment of the method for displaying video data, a method for displaying video surveillance resources based on video networking is described below, as shown in fig. 6, a PC end user logs in a video surveillance system, enters a setting page of a video networking surveillance access server, adds related information to video data accessed to the video networking surveillance access server through a surveillance service (mserver) of a video networking node server, the related information includes source information, and adds a source identifier according to the source information, stores the video data and the source identifier in a database, for example, the mserver adds source information L to video data V3, the source information L indicates that the video data V3 comes from a public security system, further adds a source identifier "GA" to video data V3, the mserver adds source information L to video data V4, the source information L indicates that the video data V4 comes from a "social security system", further adds a source identifier "QY" to video data V4 ", and further adds a video identifier" QY "to video data V4", and adds a video data V L, the video data V94 "may be displayed in a video data sharing mode, when the video data is displayed in a video data display mode, a video data display mode selected by a video data sharing rule, a video data sharing mode selected by a video data display mode selected by a video data sharing rule, a video data display mode selected by a video data display mode selected common video data display mode selected by a video node V94 video node, a video data display mode selected by a video data display mode selected video node V94 video node, a video data display mode selected by a video node, a video data display mode selected by a video node, a video data display mode selected by a video node, a video data display mode selected by a video node b 3, a video node, a video data display mode selected video node b 3, a video data display mode selected video node b 368672, a video data display mode selected video.
The above example is only illustrated by showing video data of a public security system and a social enterprise, and with the technical solution provided by the embodiment of the present invention, the video data from sources such as a hospital, a school, a government, an army, a station, a square, and a scenic spot may be shown in a merging manner or a splitting manner.
The embodiment of the invention is applied to the video network, and the video network can comprise a first video network node server, a second video network node server and a video network client, wherein the second video network node server is respectively communicated with the first video network node server and the video network client, and the first video network node server is used for connecting a plurality of monitoring terminals.
In the embodiment of the invention, the first video network node server manages the connected multiple monitoring terminals, accesses the video data of the multiple monitoring terminals and transmits the video data of the multiple monitoring terminals to the second video network node server. Meanwhile, the first video network node server can also set related information for the video data of the plurality of monitoring terminals and transmit the related information of the video data of the plurality of monitoring terminals to the second video network node server. The related information of the video data may include source information of a plurality of monitoring terminals. The second video network node server may add a corresponding source identifier to the video data of each monitoring terminal according to the source information of the plurality of monitoring terminals. The video network client side can send display request information to the second video network node server, and the display request information comprises display mode information. And the second video network node server returns video data corresponding to the display request information to the video network client according to the display mode information, the display priority of the source identifier and the downlink communication link configured for the video network terminal. And the video network client performs display operation on the received video data.
According to the embodiment of the invention, by applying the characteristics of the video network, the first video network node server can access the video data of a plurality of monitoring terminals and transmit the video data and the related information of the video data to the second video network node server. And the second video network node server adds a source identifier for the received video data, receives the display request information of the video network client, and then returns the video data to the video network client according to the display mode information, the display priority of the source identifier and the like in the display request information so that the video network client can display the video data. The embodiment of the invention can display the video data according to the display mode information and the display priority of the source identification of the video data, thereby avoiding displaying excessive video data, saving the network transmission bandwidth of the video network and reducing the workload of operators.
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. 7, a block diagram of a second node server of the video networking in the embodiment of the video data presentation system of the present invention is shown, where the system may be applied to a video networking, the video networking includes a first node server of the video networking, a second node server of the video networking, and a video networking client, the second node server of the video networking communicates with the first node server of the video networking and the video networking client, respectively, the first node server of the video networking is used to connect a plurality of monitoring terminals, and the second node server of the video networking in the system may specifically include the following modules:
the receiving module 701 is configured to receive video data and related information of the video data from a first video network node server, where the related information includes source information of a plurality of monitoring terminals.
An adding module 702, configured to add a source identifier to the video data according to source information of multiple monitoring terminals.
The receiving module 701 is further configured to receive display request information from the video network client, where the display request information includes display mode information.
And a returning module 703, configured to return video data corresponding to the display request information to the video networking client according to the display mode information, the display priority of the source identifier, and the downlink communication link configured for the video networking client, where the video networking client is configured to perform a display operation on the corresponding video data.
In a preferred embodiment of the present invention, the adding module 702 is configured to add a source identifier as a preset first identifier to the video data when the source information of the monitoring terminal is a preset first source; when the source information of the monitoring terminal is a preset second source, adding a source identifier as a preset second identifier to the video data; and the display priority of the first identifier is higher than that of the second identifier.
In a preferred embodiment of the present invention, the display request information further includes number information of a monitoring area to which the video data to be displayed belongs; the display mode information is merging mode information or splitting mode information; a return module 703 comprising: the video data determining module 7031 is configured to determine, according to the number information, video data in the monitoring area corresponding to the display request information; the video data returning module 7032 is configured to, when the video data determining module 7031 determines, according to the serial number information, that the video data in the monitoring area corresponding to the display request information is the first video data and the second video data, if the display mode information is the merging mode information, return the first video data to the video networking client according to the downlink communication link configured to the video networking client; if the display mode information is split mode information, returning the first video data and/or the second video data to the video networking client according to a downlink communication link configured for the video networking client; the source identifier of the first video data is a first identifier, and the source identifier of the second video data is a second identifier.
In a preferred embodiment of the present invention, the video data returning module 7032 is configured to determine whether a monitoring terminal to which the first video data belongs and a monitoring terminal to which the second video data belongs are in an online state; and returning the first video data and/or the second video data corresponding to the monitoring terminal in the online state to the video networking client according to the downlink communication link configured for the video networking client.
In a preferred embodiment of the present invention, the second video networking node server further comprises: a storing module 704, configured to, after the adding module 702 adds the source identifier to the video data according to the source information of the multiple monitoring terminals, establish a corresponding relationship between the video data and the source identifier, and store the video data, the source identifier, and the corresponding relationship in a preset database.
For the system 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 present invention provides a method and a system for displaying video data, which are described in detail above, and the present invention applies specific examples to illustrate the principles and embodiments of the present invention, and the description of the above embodiments is only used to help understanding the method and the core ideas of the present 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 (10)

1. The method for displaying the video data is applied to a video network, wherein the video network comprises a first video network node server, a second video network node server and a video network client, the second video network node server is respectively communicated with the first video network node server and the video network client, the first video network node server is used for connecting a plurality of monitoring terminals, and the method comprises the following steps:
the second video networking node server receives video data from the first video networking node server and relevant information of the video data, wherein the relevant information comprises source information of a plurality of monitoring terminals;
the second video networking node server adds a source identifier for the video data according to source information of the monitoring terminals, wherein the source identifier corresponds to a display priority, and the display priority is used for expressing the display sequence of the video data;
the second video network node server receives display request information from the video network client, wherein the display request information comprises display mode information;
and the second video network node server returns video data corresponding to the display request information to the video network client according to the display mode information, the display priority of the source identifier and a downlink communication link configured for the video network client, and the video network client is used for displaying the corresponding video data.
2. The method for displaying video data according to claim 1, wherein the adding, by the second node server of the video network, a source identifier to the video data according to source information of the plurality of monitoring terminals includes:
when the source information of the monitoring terminal is a preset first source, the second video networking node server adds a source identifier to the video data as a preset first identifier;
when the source information of the monitoring terminal is a preset second source, the second video networking node server adds a source identifier to the video data as a preset second identifier;
wherein the display priority of the first identifier is higher than the display priority of the second identifier.
3. The method for displaying video data according to claim 2, wherein the display request information further includes number information of a monitoring area to which the video data to be displayed belongs;
the display mode information is merging mode information or splitting mode information;
the second node server of the video network returns the video data corresponding to the display request information to the client of the video network according to the display mode information, the display priority of the source identifier and the downlink communication link configured for the client of the video network, and the method comprises the following steps:
when the second video networking node server determines that the video data in the monitoring area corresponding to the display request information are first video data and second video data according to the serial number information, if the display mode information is the splitting mode information, the first video data are returned to the video networking client according to a downlink communication link configured for the video networking client; if the display mode information is the merging mode information, returning the first video data and/or the second video data to the video network client according to a downlink communication link configured for the video network client;
wherein the source identifier of the first video data is the first identifier, and the source identifier of the second video data is the second identifier.
4. The method for displaying video data according to claim 3, wherein the second node server of the video network returns the first video data and/or the second video data to the client of the video network according to a downlink communication link configured for the client of the video network, comprising:
the second video networking node server judges whether the monitoring terminal to which the first video data belongs and the monitoring terminal to which the second video data belongs are in an online state or not;
and the second video networking node server returns the first video data and/or the second video data corresponding to the monitoring terminal in the online state to the video networking client according to a downlink communication link configured for the video networking client.
5. The method for displaying video data according to any one of claims 1 to 4, wherein after the second video network node server adds a source identifier to the video data according to source information of a plurality of the monitoring terminals, the method further comprises:
and the second video network node server establishes a corresponding relation between the video data and the source identifier, and stores the video data, the source identifier and the corresponding relation in a preset database.
6. The utility model provides a video data's display system, its characterized in that, the system is applied to in the video networking, the video networking includes first video networking node server, second video networking node server and video networking customer end, second video networking node server respectively with first video networking node server with the communication of video networking customer end, first video networking node server is used for connecting a plurality of monitor terminal, second video networking node server includes:
the receiving module is used for receiving video data from the first video networking node server and relevant information of the video data, wherein the relevant information comprises source information of a plurality of monitoring terminals;
the adding module is used for adding source identifiers for the video data according to source information of the monitoring terminals, the source identifiers correspond to display priorities, and the display priorities are used for representing display sequence of the video data;
the receiving module is further configured to receive display request information from the video networking client, where the display request information includes display mode information;
and the returning module is used for returning the video data corresponding to the display request information to the video networking client according to the display mode information, the display priority of the source identifier and a downlink communication link configured for the video networking client, and the video networking client is used for performing display operation on the corresponding video data.
7. The system for displaying video data according to claim 6, wherein the adding module is configured to add a source identifier as a preset first identifier to the video data when the source information of the monitoring terminal is a preset first source; when the source information of the monitoring terminal is a preset second source, adding a source identifier as a preset second identifier to the video data;
wherein the display priority of the first identifier is higher than the display priority of the second identifier.
8. The system for displaying video data according to claim 7, wherein the display request information further includes number information of a monitoring area to which the video data to be displayed belongs;
the display mode information is merging mode information or splitting mode information;
the return module includes:
the video data determining module is used for determining video data in a monitoring area corresponding to the display request information according to the number information;
the video data returning module is used for returning the first video data to the video network client according to a downlink communication link configured for the video network client if the display mode information is the splitting mode information when the video data determining module determines that the video data in the monitoring area corresponding to the display request information is the first video data and the second video data according to the serial number information; if the display mode information is the merging mode information, returning the first video data and/or the second video data to the video network client according to a downlink communication link configured for the video network client;
wherein the source identifier of the first video data is the first identifier, and the source identifier of the second video data is the second identifier.
9. The video data display system according to claim 8, wherein the video data return module is configured to determine whether the monitoring terminal to which the first video data belongs and the monitoring terminal to which the second video data belongs are in an online state; and returning the first video data and/or the second video data corresponding to the monitoring terminal in the online state to the video network client according to a downlink communication link configured for the video network client.
10. The system for displaying video data according to any one of claims 6 to 9, wherein the second video network node server further comprises:
and the storage module is used for establishing a corresponding relation between the video data and the source identifier after the adding module adds the source identifier to the video data according to the source information of the plurality of monitoring terminals, and storing the video data, the source identifier and the corresponding relation in a preset database.
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