CN109640029B

CN109640029B - Method and device for displaying video stream on wall

Info

Publication number: CN109640029B
Application number: CN201811372082.7A
Authority: CN
Inventors: 谢文龙; 赵虎彪; 李云鹏; 沈军
Original assignee: Visionvera Information Technology Co Ltd
Current assignee: Visionvera Information Technology Co Ltd
Priority date: 2018-11-16
Filing date: 2018-11-16
Publication date: 2020-10-02
Anticipated expiration: 2038-11-16
Also published as: CN109640029A

Abstract

The embodiment of the application provides a method and a device for displaying a video stream on a wall, wherein the method and the device are applied to a video network, the video network comprises a plurality of conference terminals, a streaming media server in communication connection with the conference terminals, and a video wall terminal and a scheduling client in communication connection with the streaming media server respectively; the video wall terminal has the advantages that the video wall terminal can play a plurality of video streams simultaneously, a user can randomly schedule the video streams to be displayed on the video wall terminal at one time, the problem that a plurality of screens and hardware equipment are needed in the traditional video wall playing can be solved, the equipment utilization rate can be reduced, cost resources can be saved, meanwhile, the occupied terrain can be reduced, the video switching is more convenient and rapid, and the video wall terminal is greatly improved compared with the prior art.

Description

Method and device for displaying video stream on wall

Technical Field

The present application relates to the field of video networking technologies, and in particular, to a method and an apparatus for displaying a video stream on a wall.

Background

With the rapid development of network technologies, bidirectional communications such as video conferences and video teaching are widely popularized in the aspects of life, work, learning and the like of users.

When a video conference or video teaching is performed, a monitoring management background is generally used for monitoring the conference condition, and a plurality of display screens are generally arranged in a video wall playing mode. The conventional television wall playing generally adopts one screen to one hardware device, so that a plurality of devices are required to form a complete television wall, and resources and cost are wasted.

Meanwhile, in the prior art, only one video stream can be operated at a time and uploaded to a corresponding display screen through one hardware device, and the video stream switching is troublesome and low in efficiency.

Disclosure of Invention

In view of the above problems, embodiments of the present application are proposed to provide a method for video stream wall showing and a corresponding apparatus for video stream wall showing, which overcome or at least partially solve the above problems.

In order to solve the above problem, an embodiment of the present application discloses a method for displaying a video stream on a wall, where the method is applied to a video network, where the video network includes a plurality of conference terminals, a streaming media server in communication connection with the conference terminals, and a video wall terminal and a scheduling client in communication connection with the streaming media server, respectively, and the method includes:

the streaming media server receives a login request message sent by the television wall terminal; the login request message is generated when the television wall terminal receives the triggering operation of the display service;

the streaming media server generates a wall-mounted terminal message according to the login request message; the on-wall terminal message comprises position information which can be displayed on the wall by the television wall terminal;

the streaming media server sends the on-wall terminal message to the scheduling client; the scheduling client is used for generating a wall-mounted request message aiming at the wall-mounted terminal message;

the streaming media server receives a wall-up request message sent by the scheduling client; the on-wall request message comprises a conference terminal to be displayed on the wall and position information of the conference terminal to be displayed on the wall;

the streaming media server generates a video stream acquisition instruction according to the on-wall request message and sends the video stream acquisition instruction to the conference terminal to be displayed on the wall;

the streaming media server receives video stream data returned by the conference terminal aiming at the video stream acquisition instruction, adds position information to be displayed on the wall by the conference terminal and sends the position information to the television wall terminal; and the video wall terminal is used for playing the video stream data at the position to be displayed on the wall.

In a preferred embodiment of the present application, the login request message includes at least one set of streaming media accounts for logging in the streaming media server, the number of the sets of streaming media accounts is matched with the number of cores of a multi-core processor of the video wall terminal one by one, and each core processor of the multi-core processor corresponds to one set of streaming media accounts.

In a preferred embodiment of the present application, each set of the streaming media account corresponds to a high-definition multimedia HDMI interface in the position information that can be displayed on the wall by the video wall terminal.

In a preferred embodiment of the present application, the step of receiving, by the streaming media server, video stream data returned by the conference terminal in response to the video stream acquisition instruction, adding location information to be displayed on the wall by the conference terminal, and sending the location information to the video wall terminal includes:

the streaming media server receives video stream data returned by the conference terminal aiming at the video stream acquisition instruction;

the streaming media server decodes the video stream data into first decoded data;

the streaming media server adds the position information to be displayed on the wall of the conference terminal in the first decoding data and recodes the position information into first coding data;

and the streaming media server sends the first coded data to the television wall terminal.

In a preferred embodiment of the present application, the step of the video wall terminal being configured to play the video stream data at the position to be displayed on the wall includes:

the television wall terminal is used for decoding the first coded data into second decoded data according to a streaming media coding and decoding protocol corresponding to the streaming media server;

and the television wall terminal is used for playing the second decoding data at the position to be displayed on the wall.

In a preferred embodiment of the present application, the system further includes a mobile command car, and the streaming media server, the video wall terminal and the scheduling client are all installed on the mobile command car.

In order to solve the above problem, an embodiment of the present application discloses another method for displaying a video stream on a wall, where the method is applied to a video network, where the video network includes a plurality of conference terminals, a streaming media server in communication connection with the conference terminals, and a video wall terminal and a scheduling client in communication connection with the streaming media server, respectively, and the method includes:

the method comprises the steps that when the television wall terminal receives a triggering operation of a display service, a login request message is generated and sent to a streaming media server;

the streaming media server generates a wall-mounted terminal message according to the login request message and sends the wall-mounted terminal message to the scheduling client; the on-wall terminal message comprises position information which can be displayed on the wall by the television wall terminal;

the scheduling client generates a wall-up request message aiming at the wall-up terminal message and sends the wall-up request message to the streaming media server; the on-wall request message comprises a conference terminal to be displayed on the wall and position information of the conference terminal to be displayed on the wall;

the streaming media server receives video stream data returned by the conference terminal aiming at the video stream acquisition instruction, adds position information to be displayed on the wall by the conference terminal and sends the position information to the television wall terminal;

and the video wall terminal plays the video stream data at the position to be displayed on the wall.

In order to solve the above problem, an embodiment of the present application discloses a device for displaying a video stream on a wall, where the device is applied to a video network, the video network includes a plurality of conference terminals, a streaming media server in communication connection with the conference terminals, and a video wall terminal and a scheduling client in communication connection with the streaming media server, respectively, and the streaming media server includes:

the login request message receiving module is used for receiving a login request message sent by the television wall terminal; the login request message is generated when the television wall terminal receives the triggering operation of the display service;

the on-wall terminal message generating module is used for generating an on-wall terminal message according to the login request message; the on-wall terminal message comprises position information which can be displayed on the wall by the television wall terminal;

the on-wall terminal message sending module is used for sending the on-wall terminal message to the scheduling client; the scheduling client is used for generating a wall-mounted request message aiming at the wall-mounted terminal message;

the on-wall request message receiving module is used for receiving an on-wall request message sent by the scheduling client; the on-wall request message comprises a conference terminal to be displayed on the wall and position information of the conference terminal to be displayed on the wall;

the on-wall video stream acquisition module is used for generating a video stream acquisition instruction according to the on-wall request message and sending the video stream acquisition instruction to the conference terminal to be displayed on the wall;

the on-wall video stream processing module is used for receiving video stream data returned by the conference terminal aiming at the video stream acquisition instruction, adding position information to be displayed on the wall by the conference terminal and sending the position information to the television wall terminal; and the video wall terminal is used for playing the video stream data at the position to be displayed on the wall.

In a preferred embodiment of the present application, the on-wall video stream processing module includes the following sub-modules:

the first receiving submodule is used for receiving video stream data returned by the conference terminal aiming at the video stream acquisition instruction;

a first decoding sub-module for decoding the video stream data into first decoded data;

the first coding submodule is used for adding the position information to be displayed on the wall of the conference terminal in the first decoding data and recoding the position information into first coding data;

and the first sending submodule is used for sending the first coded data to the television wall terminal.

In order to solve the above problem, a method for displaying a video stream on a wall according to an embodiment of the present application is a method for displaying a video stream on a wall according to an embodiment of the present application, where the apparatus is applied to a video network, the video network includes a plurality of conference terminals, a streaming media server in communication connection with the conference terminals, and a video wall terminal and a scheduling client in communication connection with the streaming media server, respectively, and the apparatus includes:

the login request message generation module is used for generating a login request message and sending the login request message to the streaming media server when the triggering operation of the display service is received;

the on-wall terminal message generating module is used for generating an on-wall terminal message according to the login request message and sending the on-wall terminal message to the scheduling client; the on-wall terminal message comprises position information which can be displayed on the wall by the television wall terminal;

the on-wall request message generation module is used for generating an on-wall request message aiming at the on-wall terminal message and sending the on-wall request message to the streaming media server; the on-wall request message comprises a conference terminal to be displayed on the wall and position information of the conference terminal to be displayed on the wall;

the on-wall video stream processing module is used for receiving video stream data returned by the conference terminal aiming at the video stream acquisition instruction, adding position information to be displayed on the wall by the conference terminal and sending the position information to the television wall terminal;

and the on-wall video stream playing module is used for playing the video stream data at the position to be displayed on the wall.

The embodiment of the application has the following advantages:

the method and the system have the advantages that the characteristics of the video networking are applied, the streaming media server which is communicated with the conference terminals is respectively connected with the video wall terminal and the scheduling client, the multiple video streams can be played on one video wall terminal simultaneously by utilizing the multi-core processing capacity of the video wall terminal and the data transmission between the video wall terminal and the streaming media server, the problem that multiple screens and hardware equipment are needed in the traditional video wall playing can be solved, the equipment utilization rate can be reduced, cost resources can be saved, and meanwhile, the terrain occupation can be reduced; by utilizing the data communication between the scheduling client and the streaming media server, a user can randomly schedule the video streams of a plurality of conference terminals to be displayed on the video wall terminal at one time, the video switching is more convenient and faster, and great progress is made.

Drawings

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

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

fig. 3 is a schematic diagram of a hardware architecture of an access switch of the present application;

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

FIG. 5 is a schematic networking diagram of a system for displaying a video stream on a wall according to an embodiment of the present application;

FIG. 6 is a flowchart illustrating steps of a method for displaying a video stream on a wall according to an embodiment of the present disclosure;

FIG. 7 is a flow chart illustrating steps of another method for on-wall presentation of a video stream according to an embodiment of the present application;

FIG. 8 is a block diagram of an apparatus for on-wall display of a video stream according to an embodiment of the present application;

fig. 9 is a block diagram illustrating an apparatus for wall display of a video stream according to an embodiment of the present application.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description.

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

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

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

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

network Technology (Network Technology)

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

Switching Technology (Switching Technology)

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

Server Technology (Server Technology)

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

Storage Technology (Storage Technology)

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

Network Security Technology (Network Security Technology)

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

Service Innovation Technology (Service Innovation Technology)

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

Networking of the video network is as follows:

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

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

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

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

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

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

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

Therefore, the whole video network is a network structure 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 application can be mainly classified into 3 types: servers, switches (including ethernet gateways), terminals (including various set-top boxes, code boards, memories, etc.). The video network as a whole can be divided into a metropolitan area network (or national network, global network, etc.) and an access network.

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

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

a node server:

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

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

The access switch:

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

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

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

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

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

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

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

Ethernet protocol conversion gateway：

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

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

the downlink network interface module 401 detects the sending buffer of the port, and if there is a packet, obtains the ethernet MAC DA of the corresponding terminal according to the destination address DA of the packet, adds the ethernet MAC DA of the terminal, the 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 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 application: a label to uniquely describe a metropolitan area network device.

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

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

DA

SA

Reserved

label (R)

Payload

CRC

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

Based on the characteristics of the video network, one of the core concepts of the embodiment of the application is provided, a video network protocol is followed, a streaming media server which is communicated with a plurality of conference terminals in the video network is utilized to be respectively connected with a television wall terminal and a scheduling client, and after the streaming media server logs in the streaming media, the streaming media server can generate a wall-mounted terminal message containing position information which can be displayed on the wall by the television wall terminal and send the wall-mounted terminal message to the scheduling client; the user can select a conference terminal to be displayed on the wall and position information of the conference terminal to be displayed on the wall through a scheduling client according to the on-wall terminal message and a real-time requirement, then an on-wall request message is generated and sent to the streaming media server, the streaming media server communicates with the conference terminal to be displayed on the wall according to the on-wall request message to obtain video stream data of the conference terminal, the position information of the conference terminal to be displayed on the wall is added and then sent to the television wall terminal, and the television wall terminal displays the video stream data at the position to be displayed on the wall.

The embodiment of the application provides a possible way for displaying video streams on the wall, a plurality of video streams can be played on one television wall terminal at the same time by utilizing the multi-core processing capacity of the television wall terminal and the data transmission between the television wall terminal and the streaming media server, the problem that a plurality of screens and hardware equipment are needed in the traditional television wall playing can be solved, the equipment utilization rate can be reduced, the cost resources can be saved, and the land occupation can be reduced; by utilizing the data communication between the scheduling client and the streaming media server, a user can randomly schedule a plurality of video streams to be displayed on the television wall terminal at one time, the video switching is more convenient and faster, and great progress is made.

Example 1:

as shown in fig. 5, a networking schematic diagram of a system for displaying a video stream on a wall according to an embodiment of the present application is shown, where the system may be applied to a video network, where the video network includes a plurality of conference terminals 01, a streaming media server 02 communicatively connected to the conference terminals 01, and a video wall terminal 03 and a scheduling client 04 communicatively connected to the streaming media server 02 respectively.

The conference terminal 01 in the embodiment of the present application may be a video network terminal storing video stream data, or may be a camera that collects video stream data in real time. In a monitoring application scenario, a real-time acquisition camera is preferred.

The streaming media server 02 mainly has the functions of collecting, caching, scheduling, transmitting and playing streaming media contents; in the embodiment of the application, the video file is transmitted to the video wall terminal 03 by a streaming protocol (RTP/RTSP, MMS, RTMP, etc.) for the user to watch online; or receiving a real-time video stream from the video acquisition and compression software, and then broadcasting the real-time video stream to the television wall terminal 03 in a streaming protocol.

The video wall terminal 03 is a hardware device for decoding audio and video, integrates image decoding and image synthesis output, adopts an integrated hardware design, and is based on a high-stability real-time embedded operating system. The system supports 8-path 1080P full high-definition output capacity (determined according to the product model), and can splice any 1-36 paths of signals into high-definition resolution (1920 multiplied by 1080) signals to carry out single-path output; a plurality of image display modes are provided, and the single-path maximum resolution reaches 1080P.

The scheduling client 04 may be software installed on the entity terminal, and has a visual interface for meeting group, switching speakers, dragging a video wall on the conference terminal, and stopping meeting. The scheduling client can be installed on a mobile phone, a notebook computer and a tablet computer according to the requirements of users, so that the users can conveniently switch on-wall conference terminals at any time and any place.

Example 2:

as shown in fig. 6, a flowchart of steps of a method for displaying a video stream on a wall according to an embodiment of the present application is shown, where the method may be applied in a video network, and in particular, may be applied in the streaming media server 02 shown in fig. 5, and the method may specifically include the following steps:

step S601: the streaming media server receives a login request message sent by the television wall terminal; the login request message is generated when the television wall terminal receives the triggering operation of the display service;

in the embodiment of the application, a user starts a television wall terminal, and then requests to be connected with the streaming media server in a mode of logging in a streaming media account in a networking mode.

The triggering operation of the display service can be a networking click operation of logging in a streaming media server, and can also be an input operation of setting and displaying several paths of video streams.

Step S602: the streaming media server generates a wall-mounted terminal message according to the login request message; the on-wall terminal message comprises position information which can be displayed on the wall by the television wall terminal;

in the embodiment of the application, after the streaming media server receives the login request message sent by the television wall terminal through the video network, the hardware information about the television wall terminal in the login request message and the position information for on-wall display are screened, and then the on-wall terminal message is regenerated.

Step S603: the streaming media server sends the on-wall terminal message to the scheduling client; the scheduling client is used for generating a wall-mounted request message aiming at the wall-mounted terminal message;

in the embodiment of the application, the streaming media server sends the on-wall terminal message to the scheduling client through the video network. And the scheduling client receives and displays the on-wall terminal message. The user can select the conference terminal to be displayed on the wall and which position of the conference terminal in the position information for displaying on the wall in the display interface according to the displayed hardware information of the television wall terminal and the position information for displaying on the wall, and generate the request message for displaying on the wall.

In a specific example of the embodiment of the present application, the video wall terminal in the on-wall terminal message is a quad-core video wall terminal, and the position information that can be displayed on the wall includes 8 display positions, which are: the first row is from left to right a1, a2, A3, a 4; the second row is from left to right B1, B2, B3, B4.

The number of conference terminals to be displayed on the wall selected by the user at the scheduling client is also 8, and the conference terminals include x1, x2, x3, x4, x5, x6, x7 and x8, at this time, the user can set that x1 is displayed at the position of A1, x2 is displayed at the position of A2, x3 is displayed at the position of A3, x4 is displayed at the position of A4, x5 is displayed at the position of B1, x6 is displayed at the position of B2, x7 is displayed at the position of B3, and x8 is displayed at the position of B4, so that the wall-up request message is generated.

Step S604: the streaming media server receives a wall-up request message sent by the scheduling client; the on-wall request message comprises a conference terminal to be displayed on the wall and position information of the conference terminal to be displayed on the wall;

in the embodiment of the application, the streaming media server receives the on-wall request message sent by the scheduling client through the video network.

Based on the specific example of step S603, the wall access request message received by the streaming media server includes: 8 conference terminals x1, x2, x3, x4, x5, x6, x7 and x8, and the position information to be shown by each conference terminal, namely x1 is shown at position A1, x2 is shown at position A2, x3 is shown at position A3, x4 is shown at position A4, x5 is shown at position B1, x6 is shown at position B2, x7 is shown at position B3, and x8 is shown at position B4.

Step S605: the streaming media server generates a video stream acquisition instruction according to the on-wall request message and sends the video stream acquisition instruction to the conference terminal to be displayed on the wall;

in the embodiment of the application, the streaming media server generates a video stream acquisition instruction according to the information of the conference terminal in the on-wall request message, where the information may include a specific location of the conference terminal, a local area network MAC address, and the like, and sends the video stream acquisition instruction to the conference terminal through the video network.

Step S606: the streaming media server receives video stream data returned by the conference terminal aiming at the video stream acquisition instruction, adds position information to be displayed on the wall by the conference terminal and sends the position information to the television wall terminal; and the video wall terminal is used for playing the video stream data at the position to be displayed on the wall.

In the embodiment of the application, after receiving the video stream acquisition instruction through the video network, the conference terminal sends the video stream data to the streaming media server through the video network. The streaming media server can receive video stream data returned by the conference terminal in real time through a video networking, then decode the video stream data according to the video stream data, add position information to be displayed on the wall of the conference terminal to the decoded video stream data, re-encode the position information and send the position information to the television wall terminal. And then the video wall terminal decodes the video stream data and plays the video stream data at a position to be displayed on the wall of the conference terminal.

Through the steps S601 to S606, the embodiment of the present application provides a possible way for displaying video streams on a television wall, which can implement simultaneous playing of multiple video streams on one television wall terminal, and a user can randomly schedule multiple video streams to be displayed on the television wall terminal at one time, so that the problem that multiple screens and hardware devices are required for traditional television wall playing can be solved, the device utilization rate can be reduced, cost resources can be saved, meanwhile, the land occupation can be reduced, video switching is more convenient and faster, and compared with the prior art, a great progress is made.

In a preferred embodiment of the present application, the login request message includes at least one group of streaming media accounts for logging in the streaming media server, and the group number of the streaming media accounts is matched with the core number of the video wall terminal one by one.

The video wall terminal is a display processing terminal with a plurality of core processors, each core processor corresponds to one streaming media account, so that the video wall terminal can log in a plurality of streaming media accounts in the same streaming media server according to the display requirements and the display capacity of the video wall terminal.

Each core processor of the video wall terminal can simultaneously correspond to one high-definition multimedia HDMI interface, each core processor can simultaneously process two paths of data, and each HDMI interface supports two paths of output, so that each group of streaming media account corresponds to one high-definition multimedia HDMI interface in the position information which can be displayed on the wall by the video wall terminal. The video wall terminal can log in the streaming media account numbers with the number corresponding to the core number of the video wall terminal according to the display capability of the video wall terminal or the operation requirement of a user. That is, if the current video wall terminal is a quad-core video wall terminal, at least one streaming media account and at most four streaming media accounts need to be logged in when the same streaming media server is logged in, so that two paths of video streams or at most 8 paths of video streams are displayed on a display screen of the video wall terminal.

The position information which can be displayed on the wall in the message of the on-wall terminal in the embodiment of the application is obtained by the streaming media server according to the number of the streaming media accounts logged in by the television wall terminal.

In a preferred embodiment of the present application, the step of receiving, by the streaming media server, video stream data returned by the conference terminal in response to the video stream acquisition instruction, adding the position information to be displayed on the wall by the conference terminal, and sending the position information to the video wall terminal may specifically include:

The preferred embodiments of the present application provide a possible way for a streaming server to decode received video stream data. The video stream data is transmitted in the form of data packets, such as a frame-by-frame transmitted video data packet, and the process of decoding the video stream data into first decoded data by the streaming media server includes a process of disassembling the video data packet into a packet header and a packet body; the streaming media server adds the position information (which is a mark) to be displayed on the wall of the conference terminal in the first decoding data, namely adding the position information data in the packet body, writing the position to be displayed in the packet header, and after the addition is finished, packaging the packet header and the packet body into first coding data and sending the first coding data to the video wall terminal.

In a preferred embodiment of the present application, the step of the video wall terminal for playing the video stream data at the position to be displayed on the wall specifically may include:

The preferred embodiment of the application provides a possible way for the video wall terminal to decode and play the received video stream data. According to the above preferred embodiment, after receiving the first encoded data, the video wall terminal decodes the first encoded data into second decoded data according to the streaming media codec protocol corresponding to the streaming media server, that is, the video wall terminal disassembles the packet header and the packet body of the video data packet in the first encoded data, reads the position to be displayed of the video data in the packet header, and then decodes the content of the packet body and plays the content at the position to be displayed on the wall.

In a preferred embodiment of the present application, the system may further include a mobile command car, and the streaming media server, the video wall terminal, and the scheduling client are all installed on the mobile command car.

The mobile command vehicle is a movable multidirectional three-dimensional distributed emergency command system which is based on the use requirements of mobile emergency, command emergency, public security and stability, group defense and group office and the like, depends on the technical cores of large-scale data exchange, resource integration capability and the like of video networking, utilizes various technologies such as satellites, 4G, unmanned aerial vehicles and the like to transmit and collect audio and video images of a use site on a video matrix in the command vehicle, can establish a bidirectional audio and video command communication system with the emergency command vehicle at a command center, provides a real-time image of the site to the command center for decision making, and can use the characteristics of a distributed command system to carry out site command, decision making and scheduling by taking the emergency command vehicle as the command center locally at the site to serve as a point, a line and a plane and take a ground, an empty and a sky as carriers.

The embodiment of the application provides an application scene of video stream on-wall display, namely, the streaming media server, the video wall terminal and the scheduling client are all installed on the mobile command car. The television wall terminal is used as a television wall display of the mobile command car, the scheduling client is installed on a control computer of the mobile command car and can be operated by commanders, and the streaming media server is installed on the mobile command car and can ensure the stability of data transmission with the television wall terminal and the scheduling client. Because the particularity of the application of the mobile command car is realized, the space in the car is narrow, and the mode of displaying on the wall through the video stream in the embodiment of the application can well solve the problem that the application on the command car cannot be moved due to the fact that a networking system displayed by a traditional television wall is large in occupied area, high in cost and low in processing efficiency.

In a specific example of the embodiment of the present application, the mobile command car only supports 6 screen displays, so that the most common four-core video wall terminal is installed on the mobile command car at present. According to the requirement of the display pictures, when the quad-core television wall terminal logs in the streaming media server, 3 streaming media accounts need to be logged in, the 3 streaming media accounts comprise HDMI interfaces of two corresponding display pictures, and then the streaming media server sends 6 position information which is corresponding to the 3 streaming media accounts and can be displayed on the wall to the scheduling client. The method comprises the steps that a commander schedules 6 conference terminals to be displayed on the wall according to current requirements, and the positions of the 6 conference terminals to be displayed on a display interface of a mobile command car respectively, then the information is sent to a streaming media server, the streaming media server obtains video stream data of the 6 conference terminals through a video network according to a wall-mounting request, adds position information to be displayed on the wall into the video stream data of the 6 conference terminals, and then sends the video stream data to a quad-core television wall terminal for displaying.

Example 3:

as shown in fig. 7, a flowchart illustrating steps of another method for displaying a video stream on a wall according to an embodiment of the present application is shown, where the method may be applied to a video network, and may specifically be applied to the system shown in embodiment 1, and the method may specifically include the following steps:

step S701: the method comprises the steps that when the television wall terminal receives a triggering operation of a display service, a login request message is generated and sent to a streaming media server;

step S702: the streaming media server generates a wall-mounted terminal message according to the login request message and sends the wall-mounted terminal message to the scheduling client; the on-wall terminal message comprises position information which can be displayed on the wall by the television wall terminal;

step S703: the scheduling client generates a wall-up request message aiming at the wall-up terminal message and sends the wall-up request message to the streaming media server; the on-wall request message comprises a conference terminal to be displayed on the wall and position information of the conference terminal to be displayed on the wall;

step S704: the streaming media server generates a video stream acquisition instruction according to the on-wall request message and sends the video stream acquisition instruction to the conference terminal to be displayed on the wall;

step S705: the streaming media server receives video stream data returned by the conference terminal aiming at the video stream acquisition instruction, adds position information to be displayed on the wall by the conference terminal and sends the position information to the television wall terminal;

step S706: and the video wall terminal plays the video stream data at the position to be displayed on the wall.

Through the steps S701 to S706, the present application embodiment provides another possible way for displaying a video stream on a television wall, and the specific implementation principle refers to embodiment 2, which can solve the problem that a plurality of screens and hardware devices are required for the conventional television wall playing, reduce the device usage rate, save the cost resources, reduce the land occupation, and make video switching more convenient and faster.

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

Example 4:

as shown in fig. 8, a block diagram of an apparatus for displaying a video stream on a wall according to an embodiment of the present application is shown, where the apparatus may be applied in a video network, and in particular, may be applied in a streaming media server 02 shown in fig. 5, and in contrast to the method in embodiment 2, the streaming media server may specifically include the following modules:

a login request message receiving module 801, configured to receive a login request message sent by the video wall terminal; the login request message is generated when the television wall terminal receives the triggering operation of the display service;

a wall terminal message generating module 802, configured to generate a wall terminal message according to the login request message; the on-wall terminal message comprises position information which can be displayed on the wall by the television wall terminal;

a wall terminal message sending module 803, configured to send the wall terminal message to the scheduling client; the scheduling client is used for generating a wall-mounted request message aiming at the wall-mounted terminal message;

a wall-up request message receiving module 804, configured to receive a wall-up request message sent by the scheduling client; the on-wall request message comprises a conference terminal to be displayed on the wall and position information of the conference terminal to be displayed on the wall;

a video stream on-wall obtaining module 805, configured to generate a video stream obtaining instruction according to the on-wall request message, and send the video stream obtaining instruction to the conference terminal to be displayed on the wall;

a on-wall video stream processing module 806, configured to receive video stream data returned by the conference terminal in response to the video stream acquisition instruction, add position information to be displayed on the wall by the conference terminal, and send the position information to the video wall terminal; and the video wall terminal is used for playing the video stream data at the position to be displayed on the wall.

In a preferred embodiment of the present application, in comparison with the method of a preferred embodiment 2, the on-wall video stream processing module 806 may specifically include the following sub-modules:

Example 5:

as shown in fig. 9, there is shown a block diagram of another apparatus for displaying video stream on the wall according to an embodiment of the present application, which may be applied in a video network, and in particular, may be applied in the system shown in fig. 5, in contrast to the method in embodiment 3, the apparatus includes:

a login request message generating module 901, configured to generate a login request message and send the login request message to the streaming media server when a triggering operation of a display service is received;

a wall terminal message generating module 802, configured to generate a wall terminal message according to the login request message and send the wall terminal message to the scheduling client; the on-wall terminal message comprises position information which can be displayed on the wall by the television wall terminal;

a wall-up request message generating module 902, configured to generate a wall-up request message for the wall-up terminal message and send the wall-up request message to the streaming media server; the on-wall request message comprises a conference terminal to be displayed on the wall and position information of the conference terminal to be displayed on the wall;

a on-wall video stream processing module 806, configured to receive video stream data returned by the conference terminal in response to the video stream acquisition instruction, add position information to be displayed on the wall by the conference terminal, and send the position information to the video wall terminal;

and the on-wall video stream playing module 903 is configured to play the video stream data at the position to be displayed on the wall.

In a preferred embodiment of the present application, in comparison with the method in a preferred embodiment of embodiment 2, the on-wall video stream playing module 903 may specifically include the following sub-modules:

the second decoding submodule is used for decoding the first coded data into second decoded data according to a streaming media coding and decoding protocol corresponding to the streaming media server;

and the second playing submodule is used for playing the second decoding data at the position to be displayed on the wall.

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

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

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

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

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

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

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

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

The method for displaying video streams on the wall and the device for displaying video streams on the wall provided by the present application are introduced in detail, and specific examples are applied in the text to explain the principle and the implementation of the present application, and the description of the above embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A method for displaying video streams on the wall is characterized in that the method is applied to a video network, the video network comprises a plurality of conference terminals, a streaming media server in communication connection with the conference terminals, and a video wall terminal and a scheduling client in communication connection with the streaming media server respectively, and the method comprises the following steps:

2. The method according to claim 1, wherein the login request message includes at least one group of streaming media accounts for logging in the streaming media server, the group number of the streaming media accounts is matched with the core number of a multi-core processor of the video wall terminal one by one, and each core processor of the multi-core processor corresponds to one group of the streaming media accounts.

3. The method according to claim 2, wherein each set of streaming media account corresponds to a high-definition multimedia HDMI interface in the location information that is available for on-wall display by the video wall terminal.

4. The method according to claim 1, wherein the step of the streaming media server receiving video stream data returned by the conference terminal for the video stream acquisition instruction, adding the position information to be displayed on the wall by the conference terminal and sending the position information to the video wall terminal comprises:

5. The method of claim 4, wherein the step of the video wall terminal playing the video stream data at the position to be displayed on the wall comprises:

6. The method of claim 1, further comprising a mobile command car, wherein the streaming media server, the video wall terminal, and the scheduling client are all installed on the mobile command car.

7. A method for displaying video streams on the wall is characterized in that the method is applied to a video network, the video network comprises a plurality of conference terminals, a streaming media server in communication connection with the conference terminals, and a video wall terminal and a scheduling client in communication connection with the streaming media server respectively, and the method comprises the following steps:

8. The device for displaying the video stream on the wall is characterized in that the device is applied to a video network, the video network comprises a plurality of conference terminals, a streaming media server in communication connection with the conference terminals, and a video wall terminal and a scheduling client in communication connection with the streaming media server respectively, and the streaming media server comprises:

9. The apparatus of claim 8, wherein the on-wall video stream processing module comprises the following sub-modules:

10. An apparatus for displaying video streams on a wall, wherein the apparatus is applied to a video network, the video network includes a plurality of conference terminals, a streaming media server in communication connection with the conference terminals, and a video wall terminal and a scheduling client in communication connection with the streaming media server, respectively, the apparatus includes: