CN110740295B

CN110740295B - Round-robin playing method and device for video stream monitored by video network

Info

Publication number: CN110740295B
Application number: CN201910944172.7A
Authority: CN
Inventors: 李璐; 白强; 周新海; 杨春晖
Original assignee: Visionvera Information Technology Co Ltd
Current assignee: Visionvera Information Technology Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2021-08-13
Anticipated expiration: 2039-09-30
Also published as: CN110740295A

Abstract

The invention provides a polling playing method and device for a video stream monitored by an internet of things. In the process of playing a plurality of monitoring video streams in turn by a playing window, if a first monitoring video stream played in the playing window needs to be switched into a second monitoring video stream, detecting whether the second monitoring video stream is called within a preset time length; if the second monitoring video stream is not called within the preset time length, calling a third monitoring video stream from the monitoring video streams which are not played in a polling mode in the plurality of monitoring video streams; and then playing the third surveillance video stream in the play window. Therefore, under the condition that the second monitoring video stream which is supposed to be played is not successfully called, the third monitoring video stream can be called and then played in the playing window, so that the third monitoring video stream is played in the playing window to replace a blue screen or a black screen, a user can see the third monitoring video stream instead of the blue screen or the black screen, and the reduction of user experience can be avoided.

Description

Round-robin playing method and device for video stream monitored by video network

Technical Field

The invention relates to the technical field of data processing, in particular to a polling playing method and device for a video stream monitored by a video network.

Background

Nowadays, in order to provide safety prevention and guarantee for the work and life of people, a monitoring camera is often arranged at an important position, and a monitoring video stream at the important position is recorded through the monitoring camera.

And then, the staff can check the monitoring video stream recorded by the monitoring camera by using a computer, check whether suspicious personnel exist in the monitoring video stream, and the like.

The staff can control the computer to play each monitoring video stream in turn, for example, assuming that there are 12 video streams in total, the user can set the playing window of the computer to be 4, that is, the computer plays 4 monitoring video streams at the same time, switches 4 monitoring video streams after playing a period of time, and switches 4 monitoring video streams after playing a period of time.

However, when the surveillance video streams are switched, the surveillance video streams recorded by the camera need to be called, and then the surveillance video streams played at the playing window are switched to the called surveillance video streams, however, if some surveillance video streams are not called when 4 surveillance video streams are switched, the surveillance video streams cannot be played at the playing window, and the playing window can present a black screen or a blue screen in the round trip period, which may give users a poor experience.

Disclosure of Invention

In order to solve the above problems, embodiments of the present invention illustrate a polling playing method and device for a video stream monitored by an internet of view.

In a first aspect, an embodiment of the present invention illustrates a round-robin playing method for video streams monitored by an internet of view, where the method includes:

in the process of playing a plurality of monitoring video streams in a polling way at a playing window, if a first monitoring video stream played at the playing window needs to be switched into a second monitoring video stream, detecting whether the second monitoring video stream is called within a preset time length;

if the second monitoring video stream is not called within a preset time length, calling a third monitoring video stream from the monitoring video streams which are not played in turn in the plurality of monitoring video streams;

and playing the third monitoring video stream in the playing window.

In an optional implementation, the method further includes:

removing the second surveillance video stream from the plurality of surveillance video streams.

In an optional implementation manner, the retrieving a third surveillance video stream from the non-round-robin played surveillance video streams in the plurality of surveillance video streams includes:

acquiring a polling playing sequence among the monitoring video streams which are not played in polling;

and calling the monitoring video stream with the polling playing sequence as the first position from the monitoring video streams which are not played in polling mode, and taking the monitoring video stream as the third monitoring video stream.

determining a position area where a monitoring camera for recording the second monitoring video stream is located;

and calling the monitoring video stream recorded by one monitoring camera positioned in the position area from the monitoring video stream which is not played in turn, and taking the monitoring video stream as the third monitoring video stream.

determining a position area where a video picture recorded by the second monitoring video stream is located;

and calling the monitoring video stream of which the recorded video picture is positioned in the position area from the plurality of monitoring video streams, and taking the monitoring video stream as the third monitoring video stream.

In a second aspect, an embodiment of the present invention shows a polling playback apparatus for monitoring video streams in an internet of view, where the apparatus includes:

the device comprises a detection module, a processing module and a processing module, wherein the detection module is used for detecting whether a first monitoring video stream played in a playing window is switched to a second monitoring video stream within a preset time length or not in the process of playing a plurality of monitoring video streams in a polling way in the playing window if the first monitoring video stream played in the playing window needs to be switched to the second monitoring video stream;

the calling module is used for calling a third monitoring video stream from the monitoring video streams which are not played in turn in the plurality of monitoring video streams if the second monitoring video stream is not called within a preset time length;

and the playing module is used for playing the third monitoring video stream in the playing window.

In an optional implementation, the apparatus further comprises:

a removal module to remove the second surveillance video stream from the plurality of surveillance video streams.

In an optional implementation manner, the invoking module includes:

the acquisition unit is used for acquiring the polling playing sequence among the monitoring video streams which are not polled and played in a polling way;

and the first calling unit is used for calling the monitoring video stream with the first polling playing sequence from the monitoring video streams which are not played in polling mode, and taking the monitoring video stream as the third monitoring video stream.

In an optional implementation manner, the invoking module includes:

a first determining unit, configured to determine a position area where a monitoring camera recording the second surveillance video stream is located;

and the second calling unit is used for calling the monitoring video stream recorded by one monitoring camera positioned in the position area from the monitoring video stream which is not played in a round of patrol and taking the monitoring video stream as the third monitoring video stream.

In an optional implementation manner, the invoking module includes:

a second determining unit, configured to determine a location area where a video picture recorded by the second surveillance video stream is located;

and a third calling unit, configured to call, from the multiple surveillance video streams, a surveillance video stream in which a recorded video picture is located in the position area, and use the surveillance video stream as the third surveillance video stream.

In a third aspect, an embodiment of the present invention shows an electronic device, where the electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor, when executing the computer program, implements the round-robin playing method for the video stream monitored by the internet of view according to the first aspect.

In a fourth aspect, an embodiment of the present invention shows a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, where the computer program causes a processor to execute the round-robin playing method for the video stream monitored through the internet of view according to the first aspect.

The embodiment of the invention has the following advantages:

in the prior art, in the process of playing a plurality of surveillance video streams in a round trip manner at a playing window, if a second surveillance video stream is not successfully called under the condition that a first surveillance video stream played at the playing window needs to be switched to a second surveillance video stream, a playing window for playing the second surveillance video stream will present a black screen or a blue screen within the round trip period, and the user experience is reduced when the user sees the black screen or the blue screen.

In the application, in the process of playing a plurality of monitoring video streams in turn at a playing window, if a first monitoring video stream played at the playing window needs to be switched to a second monitoring video stream, whether the second monitoring video stream is called within a preset time is detected; if the second monitoring video stream is not called within the preset time length, calling a third monitoring video stream from the monitoring video streams which are not played in a polling mode in the plurality of monitoring video streams; and then playing the third surveillance video stream in the play window.

Through the method and the device, under the condition that the second monitoring video stream to be played is not successfully called, the third monitoring video stream can be called and then played in the playing window, so that the third monitoring video stream is played in the playing window to replace a blue screen or a black screen, a user can see the third monitoring video stream instead of the blue screen or the black screen, and the reduction of user experience can be avoided.

Secondly, in a general situation, when a large number of surveillance video streams are played in turn for a long time, a user often does not pay special attention to individual surveillance video streams, and therefore, even if a small number of surveillance video streams cannot be played, the effect of viewing the surveillance video streams by the user is not affected.

Drawings

Fig. 1 is a flowchart illustrating steps of a polling playing method for a video stream monitored by an internet of view according to an embodiment of the present invention.

Fig. 2 is a flowchart illustrating steps of a method for retrieving a surveillance video stream according to an embodiment of the present invention.

Fig. 3 is a flowchart illustrating steps of a method for retrieving a surveillance video stream according to an embodiment of the present invention.

Fig. 4 is a flowchart illustrating steps of a method for retrieving a surveillance video stream according to an embodiment of the present invention.

Fig. 5 is a block diagram of a polling playback apparatus for monitoring video streams in an internet of view according to an embodiment of the present invention.

Fig. 6 is a networking schematic diagram of a video network of the present invention.

Fig. 7 is a schematic diagram of a hardware structure of a node server according to the present invention.

Fig. 8 is a schematic diagram of a hardware structure of an access switch of the present invention.

Fig. 9 is a schematic diagram of a hardware structure of an ethernet protocol conversion gateway according to the present invention.

Detailed Description

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

Referring to fig. 1, a flowchart illustrating steps of a polling playing method for monitoring video streams based on an internet of view according to an embodiment of the present invention is shown, where the method specifically includes the following steps:

in step S101, in the process of playing a plurality of surveillance video streams in turn at a playing window, if it is necessary to switch a first surveillance video stream played at the playing window to a second surveillance video stream, it is detected whether the second surveillance video stream is called within a preset time period;

in the application, a user can view the monitoring video stream on the monitoring management platform in a mode of playing the monitoring video stream in turn. The surveillance video stream of the application comprises a surveillance video stream recorded by a camera.

For example, the user may select a plurality of surveillance video streams, for example, 100, 200, or 500, on the surveillance management platform, then set the number of surveillance video streams that can be played simultaneously by the surveillance management platform, for example, 4, 6, or 9, and then set the duration for playing each surveillance video stream on the surveillance management platform, for example, 3 minutes, 5 minutes, or 10 minutes.

Then, the monitoring management platform calls the number of monitoring video streams from the plurality of monitoring video streams needing to be played in turn, then each called monitoring video stream is played for the duration in one playing window, then other monitoring video streams of the number are called from the monitoring video streams needing to be played in turn, and each called monitoring video stream is played for the duration in one playing window, so on, and is played continuously and circularly for the user to check.

For example, assuming that the number of the surveillance video streams needing to be played in turn is 100, the number of the surveillance video streams that can be played by the surveillance management platform at the same time is 4, and the duration of playing each surveillance video stream is 1 minute. Thus, 4 surveillance video streams are played each time, the playing time is 1 minute, then the next playing period is entered, for example, other 4 surveillance video streams are played, after the playing time reaches 1 minute, another playing period is entered, for example, another 4 surveillance video streams are played, and the 100 surveillance video streams are played in turn until the 25 th playing period is completed. Then, if the 100 monitoring video streams need to be played in turn, the monitoring management platform may continue to enter the next turn to play the 100 monitoring video streams in turn according to the above-mentioned flow.

However, sometimes, during the process of retrieving some surveillance video streams, the surveillance management platform may not successfully retrieve the surveillance video streams, for example, a network between a camera recording the surveillance video streams and the surveillance management platform is disconnected, and communication between the camera and the surveillance management platform is not possible, so that the surveillance management platform cannot retrieve the surveillance video streams recorded by the camera.

Under the circumstance, the monitoring video stream cannot be played on the playing window in the round-robin period, in a normal condition, the monitoring management platform sets the playing window to be a black screen or a blue screen, a user can see the black screen or the blue screen on the playing window, other monitoring video streams are called again after the round-robin period is finished, and if other monitoring video streams are called, other monitoring video streams can be played on the playing window. However, in the round robin period, the user may see a black screen or a blue screen on the playing window, which may result in a low user experience.

Therefore, in order to avoid reducing the user experience, in the process of playing a plurality of monitoring video streams in turn in the playing window, if it is necessary to switch the first monitoring video stream played in the playing window to the second monitoring video stream, it may be detected whether the second monitoring video stream is called within a preset time period, and if the second monitoring video stream is not called within the preset time period, step S102 is executed.

The play window in this step is any one of a plurality of play windows used for playing the monitoring video stream in each polling period of the monitoring management platform.

If the second surveillance video stream is not called within the preset time, in step S102, a third surveillance video stream is called from the surveillance video streams that are not played in turn among the plurality of surveillance video streams;

in the application, the second surveillance video stream needs to be played in the playing window, but if the second surveillance video stream is not called within a preset time, the second surveillance video stream is often caused by a network disconnection between a camera recording the surveillance video stream and a surveillance management platform, and the problems often cannot be solved later, that is, the second surveillance video stream cannot be successfully called within a short period, so that, in order to avoid the playing window presenting a black screen or a blue screen within the round trip period, an attempt can be made to call other surveillance video streams in the multiple surveillance video streams, and the called other surveillance video streams are played on the playing window, so that the user can see other surveillance video streams within the round trip period without seeing the blue screen or the black screen, and therefore, the user experience can be prevented from being reduced.

Therefore, when the third surveillance video stream is called, the third surveillance video stream may be called from the surveillance video streams that have not been played in turn among the plurality of surveillance video streams, and then step S103 is executed.

Specifically, how to call the third surveillance video stream from the non-round-played surveillance video streams in the plurality of surveillance video streams may refer to the embodiments shown in fig. 2 to 4, and will not be described in detail herein.

In step S103, the third surveillance video stream is played in the play window.

Furthermore, the second monitoring video stream is removed from the plurality of monitoring video streams, so that the monitoring video stream which cannot be successfully called can be removed, and then the second monitoring video stream is not called again when the plurality of monitoring video streams are played in a second round of patrol, so that the monitoring video stream which needs to be played in a round of patrol can be successfully called by the monitoring management platform as far as possible.

In addition, the second monitoring video stream can also be prompted to be incapable of being successfully called, so that a technician can check the fault as soon as possible, and the monitoring management platform can successfully call the second monitoring video stream as soon as possible.

In one embodiment of the present application, referring to fig. 2, step S102 includes:

in step S201, a polling playing sequence between monitoring video streams that have not been played in polling is obtained;

in this application, a plurality of surveillance video streams have a round-robin playing sequence, and the surveillance video streams may be played in round-robin manner according to the round-robin playing sequence.

The surveillance video stream includes a surveillance video stream recorded by a surveillance camera, and when the surveillance video stream is called, the surveillance video stream is usually called from the surveillance camera that records the surveillance video stream, that is, the surveillance video stream needs to be called from the surveillance camera according to a camera identifier of the surveillance camera.

The first corresponding relation between the camera mark of the camera and the round patrol mark can be set in advance, the first corresponding relation comprises two columns, the first column is used for storing the camera mark, the second column is used for storing the round patrol mark, and the round patrol mark is used for indicating whether the round patrol play is played or not.

Therefore, the sequence among the camera identifications of the cameras recording each surveillance video stream can be determined according to the polling playing sequence among the surveillance video streams, then each camera identification is stored in the first column in the first corresponding relation between the camera identification of the camera and the polling identification according to the sequence, the polling identifications corresponding to the camera identifications are arranged in the right column in the first corresponding relation, the polling identifications are all set as first polling identifications, and the first polling identifications are used for showing that the camera identifications are not played in polling playing of one round.

And then sequentially calling and playing the surveillance video streams recorded by the cameras corresponding to the camera identifications according to the sequence of the camera identifications in the first row in the first corresponding relationship, wherein the corresponding round-trip identification needs to be updated to be a second round-trip identification in the first corresponding relationship, and the second round-trip identification is used for indicating that the surveillance video streams are played in a round of round-trip playing.

Therefore, the monitoring video streams recorded by the cameras can be determined according to the polling identification and are not played in a polling mode.

In step S202, a surveillance video stream whose polling play order is the top is called from among the surveillance video streams that have not been played in polling, and is used as a third surveillance video stream.

In one embodiment of the present application, referring to fig. 3, step S102 includes:

in step S301, a position area where a monitoring camera recording the second monitoring video stream is located is determined;

in the application, any monitoring camera is fixedly installed in a position area, a corresponding table entry can be formed by the camera identification of the camera and the position area where the camera is located in advance, and the corresponding table entry is stored in a second corresponding relation between the camera identification of the camera and the position area. The same is true for each of the other cameras.

In this application, the surveillance video stream includes the surveillance video stream recorded by the surveillance camera, and when the surveillance video stream is called, the surveillance video stream is usually called from the surveillance camera that records the surveillance video stream, that is, the surveillance video stream needs to be called from the surveillance camera according to the camera identifier of the surveillance camera.

That is, before the second surveillance video stream is called, the surveillance management platform already knows the camera id of the surveillance camera that records the second surveillance video stream.

Therefore, the position area corresponding to the camera mark of the monitoring camera recording the second monitoring video stream can be searched in the second corresponding relationship between the camera mark of the camera and the position area, and the position area is used as the position area where the monitoring camera recording the second monitoring video stream is located.

In step S302, a surveillance video stream recorded by one surveillance camera located in the position area is selected from the surveillance video streams that have not been played in round robin fashion, and is used as a third surveillance video stream.

In the present application, all the camera identifiers corresponding to the position area may be searched in the second correspondence between the camera identifier of the camera and the position area, then the camera identifier of the monitoring camera recording the second surveillance video stream may be removed from the searched camera identifiers, then one camera identifier may be selected from the remaining camera identifiers, and the surveillance video stream recorded by the camera corresponding to the selected camera identifier may be retrieved and used as the third surveillance video stream.

In the embodiment of the application, although the second surveillance video stream cannot be retrieved, the surveillance video stream recorded by one surveillance camera located in the position area where the surveillance camera recording the second surveillance video stream is located can be retrieved, so that the user can still view the surveillance video stream recorded by one surveillance camera located in the position area where the surveillance camera recording the second surveillance video stream is located, and the requirement of the user for viewing the surveillance video stream in the position area is met.

In one embodiment of the present application, referring to fig. 4, step S102 includes:

in step S401, a position area where a video picture recorded by the second monitoring video stream is located is determined;

in this application, to any one surveillance camera, it is fixed in a position and fixed towards a certain direction, that is, it gathers the surveillance video stream of the fixed position area, can constitute the corresponding table entry with the camera identification of camera and the position area where the video picture that it records is located in advance, and store in the third corresponding relation between the camera identification of camera and the position area. The same is true for each of the other cameras.

Therefore, the position area corresponding to the camera mark of the monitoring camera recording the second monitoring video stream can be searched in the third corresponding relationship between the camera mark of the camera and the position area, and the position area is used as the position area where the video picture recorded by the second monitoring video stream is located.

In step S402, a surveillance video stream in which the recorded video frames are located in the position area is called as a third surveillance video stream among the plurality of surveillance video streams.

In the present application, all the camera identifiers corresponding to the position area may be searched in the third corresponding relationship between the camera identifier of the camera and the position area, then the camera identifier of the monitoring camera recording the second surveillance video stream may be removed from the searched camera identifiers, then one camera identifier may be selected from the remaining camera identifiers, and the surveillance video stream recorded by the camera corresponding to the selected camera identifier may be retrieved and used as the third surveillance video stream.

In this embodiment of the present application, although the second surveillance video stream cannot be retrieved, the surveillance video stream in which the recorded video picture is located in the location area where the video picture recorded in the second surveillance video stream is located may be retrieved and used as the third surveillance video stream. Therefore, the user can still check the surveillance video stream of which the picture is located in the position area where the video picture recorded by the second surveillance video stream is located, and the surveillance video stream is used as the third surveillance video stream, and the requirement of the user for checking the surveillance video stream of the position area is met.

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. 5, a block diagram of a structure of a polling playing apparatus for monitoring video streams in an internet of view according to an embodiment of the present invention is shown, where the apparatus may specifically include the following modules:

the detection module 11 is configured to, in the process of playing a plurality of surveillance video streams in a round-robin manner at a playing window, detect whether a second surveillance video stream is called within a preset time period if a first surveillance video stream played at the playing window needs to be switched to the second surveillance video stream;

the retrieving module 12 is configured to, if the second surveillance video stream is not retrieved within a preset time period, retrieve a third surveillance video stream from the surveillance video streams that are not played in turn among the multiple surveillance video streams;

and a playing module 13, configured to play the third surveillance video stream in the playing window.

In an optional implementation, the apparatus further comprises:

In an optional implementation, the retrieving module 12 includes:

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 embodiment of the invention also discloses electronic equipment, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein when the processor executes the computer program, the round-robin playing method of the video stream monitored by the video network is realized.

The embodiment of the invention also discloses a computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and the computer program enables a processor to execute the polling playing method of the video stream monitored by the video network.

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 the traditional Ethernet (Ethernet) to face the potentially huge first 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. 6, the video network is divided into an access network and a metropolitan network.

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

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

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

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

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

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

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

Video networking device classification

1.1 devices in the video network of the embodiment of the present invention can be mainly classified into 3 types: server, exchanger (including Ethernet protocol conversion gateway), terminal (including various set-top boxes, code board, memory, 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 server, access exchanger (including Ethernet protocol conversion gateway), terminal (including various set-top boxes, coding board, memory, etc.).

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

a node server:

as shown in fig. 7, 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. 8, the network interface module (downlink network interface module 301, uplink network interface module 302), switching engine module 303 and 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, 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 and may include 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. 9, the system mainly includes a network interface module (a downlink network interface module 401 and an uplink network interface module 402), a switching engine module 403, a CPU module 404, a packet detection module 405, a rate control module 408, an address table 406, a packet buffer 407, a MAC adding module 409, and a MAC deleting module 410.

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

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

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

A terminal:

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

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

2. Video networking packet definition

2.1 Access network packet definition

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

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

DA

SA

Reserved

Payload

CRC

wherein:

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

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

the reserved byte consists of 2 bytes;

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

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

2.2 metropolitan area network packet definition

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

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

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

DA

SA

Reserved

label (R)

Payload

CRC

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

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 polling playing method and device for video stream monitored by the video network provided by the invention are described in detail, a specific example is applied in the text to explain the principle and the implementation mode of the invention, and the description of the above embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A polling playing method of a video stream monitored by a video network is characterized by comprising the following steps:

playing the third monitoring video stream in the playing window;

and the third monitoring video stream is a monitoring video stream with the first polling playing sequence in the monitoring video streams which are not polled and played in a polling mode.

2. The method of claim 1, further comprising:

3. The method according to claim 1, wherein the retrieving a third surveillance video stream from the non-round-robin played surveillance video streams of the plurality of surveillance video streams comprises:

4. The method according to claim 1, wherein the retrieving a third surveillance video stream from the non-round-robin played surveillance video streams of the plurality of surveillance video streams comprises:

5. The method according to claim 1, wherein the retrieving a third surveillance video stream from the non-round-robin played surveillance video streams of the plurality of surveillance video streams comprises:

6. A polling playback apparatus for monitoring video streams in a video network, the apparatus comprising:

a playing module, configured to play the third surveillance video stream in the playing window; and the third monitoring video stream is a monitoring video stream with the first polling playing sequence in the monitoring video streams which are not polled and played in a polling mode.

7. The apparatus of claim 6, further comprising:

8. The apparatus of claim 6, wherein the invoking module comprises:

9. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor, when executing the computer program, implements the round-robin playback method for video streams for internet of sight monitoring according to any one of claims 1 to 5.

10. A computer-readable storage medium, having stored thereon a computer program for causing a processor to execute the round robin playback method for video streams for internet of view surveillance according to any one of claims 1 to 5.