CN110677392A

CN110677392A - Video data transmission method and device

Info

Publication number: CN110677392A
Application number: CN201910866723.2A
Authority: CN
Inventors: 张涛涛; 沈军; 王洪超; 么学佳
Original assignee: Visionvera Information Technology Co Ltd
Current assignee: Visionvera Information Technology Co Ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-01-10
Anticipated expiration: 2039-09-12
Also published as: CN110677392B

Abstract

The embodiment of the invention provides a video data transmission method and a video data transmission device, wherein the method is applied to a video network and comprises the following steps: the video network terminal searches the target plan information according to the plan identification input by the user, and the method comprises the following steps: the terminal identification of the target video network terminal, the server identification of the target video network server, the split screen information of the target video network terminal and the media receiving port number corresponding to the split screen information are obtained; the video network terminal sends the plan information to a target video network server according to the server identification; the target video network server forwards the plan information to the streaming media platform; and the streaming media platform determines a target video networking terminal and sends a corresponding video stream to the target video networking terminal according to the media receiving port number. In the embodiment of the invention, the split screen information and the receiving port number in the current video playing are confirmed by sending the plan information, so that the problem of playing delay caused by the fact that multiple paths of videos need to confirm video sources, parameter information and the like one by one in split screen playing is avoided.

Description

Video data transmission method and device

Technical Field

The invention relates to the technical field of video networking, in particular to a video data transmission method and device.

Background

The video network is a real-time network, can realize the real-time transmission of full-network high-definition videos, and pushes video services to high-definition videos. At present, when video data transmission is performed in a video network, each path of video involved needs to be interacted through multiple signaling to confirm a video playing path.

Therefore, when a terminal displays multiple paths of videos in a split screen mode, when a client and a server request each path of video stream when the client and the server request each path of video stream, signaling interaction is carried out through a session initiation protocol to confirm parameters required by transmission and playing of each path of video stream, and then the server establishes connection with the client to transmit the video streams in a split path mode.

Disclosure of Invention

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

In order to solve the above problem, a first aspect of the embodiments of the present invention discloses a video data transmission method, where the method is applied to a video network, where the video network includes a video network server, a video network terminal, and a streaming media platform, and the method may include:

the video network terminal searches target plan information according to the plan identification input by the user; the target plan information includes: the method comprises the steps that a terminal identification of a target video network terminal, a server identification of a target video network server, split screen information of the target video network terminal and a media receiving port number corresponding to the split screen information are obtained;

the video network terminal sends the plan information to the target video network server according to the server identification;

the target video network server forwards the plan information to the streaming media platform;

and the streaming media platform determines the target video network terminal according to the terminal identifier, and sends a video stream corresponding to the split screen information of the target video network terminal to a corresponding port of the target video network terminal according to the media receiving port number corresponding to the split screen information.

Optionally, after the step of sending the plan information to the video network server by the video network terminal, the method further includes:

the video network terminal creates a first socket; and the first socket is created according to the terminal identification of the video network terminal and the media receiving port number corresponding to the split screen information.

Optionally, the step of sending the video stream corresponding to the split screen information of the target video networking terminal to the corresponding port of the target video networking terminal according to the media receiving port number corresponding to the split screen information includes:

the streaming media platform creates a second socket; the second socket is created according to the terminal identification of the video network terminal and the media receiving port number corresponding to the split screen information;

the streaming media platform is connected with the corresponding first socket through the second socket; the first socket corresponding to the second socket is the same as the terminal identifier of the video network terminal used when the second socket is created and the media receiving port number corresponding to the split screen information;

and the streaming media platform sends the video stream through the connection of the first socket and the second socket.

Optionally, before the step of searching for the target plan information by the video network terminal according to the plan identifier input by the user, the method further includes:

the video network terminal acquires all the plan information in the play plan database and caches the plan information in a local memory of the video network terminal; the play plan database stores the plan information created by the video network terminal;

the step of searching the target plan information by the video network terminal according to the plan identification input by the user comprises the following steps:

and the video network terminal searches the target plan information in the local cache according to the plan identification.

Optionally, after the step of searching for the target plan information by the video network terminal according to the plan identifier input by the user, the method further includes:

the video network terminal receives an updating operation aiming at the target plan information; the updating operation comprises modification, deletion and addition of the target plan information;

and updating the target plan information according to the updating operation.

the video network terminal receives the plan information creating operation of a user; the preset information creating operation comprises inputting a server identification of the video network server, split screen information of the video network terminal, a media receiving port number corresponding to the split screen information and a preset identification;

the video network terminal acquires a terminal identifier of the video network terminal and creates corresponding plan information according to the creation operation;

and the video network terminal stores the plan information in a play plan database.

A second aspect of the embodiments of the present invention discloses a video data transmission device, which is applied to a video network, where the video network includes a video network server, a video network terminal, and a streaming media platform, and the device includes:

the query module is used for searching target plan information by the video network terminal according to the plan identification input by the user; the target plan information includes: the method comprises the steps that a terminal identification of a target video network terminal, a server identification of a target video network server, split screen information of the target video network terminal and a media receiving port number corresponding to the split screen information are obtained;

the first sending module is used for sending the plan information to the target video network server by the video network terminal according to the server identification;

the second sending module is used for forwarding the plan information to the streaming media platform by the target video network server;

and the video data sending module is used for determining the target video network terminal according to the terminal identifier by the streaming media platform and sending a video stream corresponding to the split screen information of the target video network terminal to a corresponding port of the target video network terminal according to the media receiving port number corresponding to the split screen information.

Optionally, the method further comprises:

the first establishing module is used for establishing a first socket by the video networking terminal; and the first socket is created according to the terminal identification of the video network terminal and the media receiving port number corresponding to the split screen information.

Optionally, the video data sending module includes:

the second creating submodule is used for creating a second socket by the streaming media platform; the second socket is created according to the terminal identification of the video network terminal and the media receiving port number corresponding to the split screen information;

the connection sub-module is used for connecting the streaming media platform with the corresponding first socket through the second socket; the first socket corresponding to the second socket is the same as the terminal identifier of the video network terminal used when the second socket is created and the media receiving port number corresponding to the split screen information;

and the video data sending submodule is used for sending the video stream by the streaming media platform through the connection of the first socket and the second socket.

Optionally, the method further comprises:

the cache module is used for the video network terminal to acquire all the plan information in the play plan database and cache the plan information in the local memory of the video network terminal; the play plan database stores the plan information created by the video network terminal;

the query module is further configured to search the target plan information in the local cache by the video network terminal according to the plan identifier.

Optionally, the method further comprises:

the updating operation receiving module is used for receiving the updating operation aiming at the target plan information by the video networking terminal; the updating operation comprises modification, deletion and addition of the target plan information;

and the updating module is used for updating the target plan information according to the updating operation.

Optionally, the method further comprises:

a creation operation receiving module for receiving the plan information creation operation of the user by the video network terminal; the preset information creating operation comprises inputting a server identification of the video network server, split screen information of the video network terminal, a media receiving port number corresponding to the split screen information and a preset identification;

the plan information creating module is used for the video network terminal to acquire a terminal identifier of the video network terminal and create corresponding plan information according to the creating operation;

and the plan information storage module is used for storing the plan information in a play plan database by the video network terminal.

The embodiment of the invention has the following advantages:

in the embodiment of the invention, when the video network terminal plays the video, the corresponding plan information is firstly sent to the corresponding streaming media platform through the video network server, and the streaming media platform sends the video stream according to the plan information.

Drawings

FIG. 1 is a schematic diagram of a data transmission process during video data transmission according to the present invention;

FIG. 2 is a flow chart of the steps of a video data transmission method of the present invention;

fig. 3 is a diagram illustrating an application example of a video data transmission method according to the present invention;

fig. 4 is a block diagram of a video data transmission apparatus according to the present invention;

FIG. 5 is a networking schematic of a video network of the present invention;

FIG. 6 is a schematic diagram of a hardware architecture of a node server according to the present invention;

fig. 7 is a schematic diagram of a hardware structure of an access switch of the present invention;

fig. 8 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.

Based on the characteristics of the video network, fig. 1 is a schematic diagram of a data transmission process during video data transmission of the present invention, as shown in fig. 1, one of the core concepts of the embodiments of the present invention is proposed, the video network loads plan information from a plan database and stores the created plan information in the plan database, the video network terminal searches for and obtains a corresponding target plan according to a plan identifier input by a user and then sends the target plan to the video network server, the video network server forwards the target plan to a streaming media platform, the streaming media platform sends a video stream according to the target plan, because the plan includes a terminal identifier of the video network terminal, a server identifier of the target video network server, split screen information of the target video network terminal, a media receiving port number corresponding to the split screen information, and the like, at this moment, parameter confirmation, connection establishment and video stream sending are not needed to be carried out on each path of video between the video networking terminal and the streaming media platform, and the streaming media platform can directly send the video stream to the corresponding port, so that video playing delay caused by sequential confirmation of multiple paths of video streams is avoided.

Referring to fig. 2, a flowchart illustrating steps of an embodiment of a video data transmission method according to the present invention is shown, as shown in fig. 2, the method may be applied to a video network, where the video network includes a video network server, a video network terminal, and a streaming media platform, and specifically includes the following steps:

step 201: the video network terminal searches target plan information according to the plan identification input by the user; the target plan information includes: the terminal identification of the target video network terminal, the server identification of the target video network server, the split screen information of the target video network terminal and the media receiving port number corresponding to the split screen information.

In the embodiment of the invention, the video networking terminal can be a split screen video networking terminal which has at least one screen and can play two or more paths of videos, such as a monitoring terminal, can simultaneously view monitoring videos of all places, or a conference terminal can simultaneously display conference videos of a plurality of participants, and the like.

In the embodiment of the present invention, the video network terminal may search the target plan information according to the plan identifier input by the user, where the plan identifier may be a name, a number, and the like of the plan, the name and the number of the plan may be automatically filled by the user when creating the plan, or a default name, a default number, and the like of the plan may be used, and a person skilled in the art may use other plan information as the plan identifier, which is not limited in the embodiment of the present invention.

In the embodiment of the invention, the target plan information comprises a terminal identifier of a target video network terminal, a server identifier of a target video network server, split screen information of the target video network terminal and a media receiving port number corresponding to the split screen information, wherein the terminal identifier of the target video network terminal can be a terminal ID and/or a terminal IP address, the server identifier of the video network server can be a server ID and/or a server IP address, the split screen information of the target video network terminal can comprise the split screen number and each split screen position of the target video network terminal, meanwhile, the target plan information also comprises the media receiving port number corresponding to the split screen information, and a video stream received by the media port number can be played on the corresponding split screen.

Optionally, before step 201, the method may further include:

the video network terminal acquires all the plan information in the play plan database and caches the plan information in a local memory of the video network terminal; the play plan database stores the plan information created by the video network terminal.

In the embodiment of the present invention, optionally, a play plan database may be set, where all the plan information created in advance by the video network terminal is stored in the play plan database, and in practical applications, the plan database may be deployed on the video network terminal, or may be deployed on other video network devices independent from the video network terminal.

In the embodiment of the present invention, optionally, the video network terminal may obtain the plan information from the plan database each time it is started, or may obtain the plan information from the plan database once every first period of time in the operation process.

Optionally, step 201 includes:

In the embodiment of the invention, after receiving the plan identification input by the user, the target plan information is searched in the local cache according to the plan identification, if the target plan information is searched successfully, the target plan information can be displayed to the user so that the user can confirm whether the currently displayed target plan information is the plan information required by the user, optionally, one or more than one plan information searched according to the plan identification can be used as the target plan information, and when a plurality of target plan information are provided, the target plan information can be displayed in a sequence from large to small according to the correlation degree with the plan identification input by the user.

In the embodiment of the invention, after the target plan information is confirmed, the video networking terminal can be split according to the split screen information in the target plan information, optionally, the split screen information can be vertically and equally split into two screens, or be a field grid and equally split into four screens, and the like, specifically, the number of split screens, the size of each split screen and the position of each split screen are not limited, each split screen corresponds to a media receiving port number, and the split screen plays the video stream received by the corresponding media receiving port number.

Optionally, before step 201, the method may further include:

the video network terminal receives the plan information creating operation of a user; the preset information creating operation comprises inputting a server identifier of the video network server, split screen information of the video network terminal, a media receiving port number corresponding to the split screen information and a preset identifier.

In the embodiment of the invention, the video network terminal can create new plan information according to the plan information creating operation of the user, optionally, the creating preset operation of the user can be received to enter a plan information creating interface, and then the plan information creating operation of the user is received, wherein the plan information creating operation can include inputting a server identifier of a video network server, split screen information of the video network terminal, a media receiving port number and a plan identifier corresponding to the split screen information, optionally, the server identifier of the video network server and the plan identifier input by the user can be received, displaying the plan information creating interface in a split screen display mode of the video network terminal, receiving selection operation, amplification and reduction operation, addition and deletion operation, mobile operation and the like of different split screens in the video network terminal by the user, and determining the split screen information of the video network terminal in the created plan information according to the operation of different split screens by the user, and the media receiving port number corresponding to the split screen information.

And the video network terminal acquires the terminal identification of the video network terminal and creates corresponding plan information according to the creation operation.

In the embodiment of the invention, because the preset information is created through the video network terminal, the video network terminal identification in the preset information can be acquired by the video network terminal and used for creating the preset information, and optionally, the terminal identification of the video network terminal input by a user can also be received, so that the operation steps of the video network terminal in the preset information creating process are reduced, and the preset information creating efficiency is improved.

In the embodiment of the present invention, the created plan information may be stored in the play plan database, so as to centrally manage the plan information created by the video network terminal, and optionally, the created plan information may also be stored in the local memory of the video network terminal first, and the plan information created in the local memory is stored in the play plan database at intervals, or when the video network terminal receives an operation of closing the terminal, the plan information created by the video network terminal is stored in the play plan database before the terminal is closed.

Optionally, after step 201, the method may further include:

the video network terminal receives an updating operation aiming at the target plan information; the updating operation comprises modification, deletion and addition of the target plan information.

And updating the target plan information according to the updating operation.

In the embodiment of the present invention, after the target plan information is confirmed, an update operation of a user for the target plan information may also be received, and optionally, the update operation may be modification, deletion, and addition, for example, a modification of a plan identifier, a modification of an identifier and an address of a server of a video network, a modification of an identifier and an address of a terminal of a video network, a modification of a size and a position of a split screen, a deletion of a receiving port number, an addition of a split screen, an addition of a receiving port number, and the like, and optionally, the updated target plan information may be stored in a local memory of the terminal of the video network, and the updated target plan information may be stored in a plan database after a period of time or before shutdown, or the updated target plan information may also be directly stored in the plan database, which is not specifically limited in this embodiment of the present invention.

Step 202: and the video network terminal sends the plan information to the target video network server according to the server identification.

In the embodiment of the invention, when the video networking terminal sends the plan information, the plan information needs to be sent to the target video networking server according to the server identifier, wherein the target video networking server is interacted with the corresponding streaming media platform, and the streaming media platform stores front-end video data corresponding to a monitoring or corresponding camera, so that the plan information needs to identify the target video networking server corresponding to the required video data, and then the target video networking server sends the plan information to the corresponding streaming media platform.

Optionally, after step 202, the method may further include:

In the embodiment of the present invention, optionally, data transmission may be performed through a socket, where the socket is a network programming interface independent of a protocol, and is capable of implementing end-to-end data transmission, and is represented by a combination of an address and a port number.

Step 203: and the target video network server forwards the plan information to the streaming media platform.

In the embodiment of the present invention, the target video networking server may send the received plan information to the corresponding streaming media platform, where the video data source requested by the plan information may be determined according to the plan information, for example, according to a terminal identifier or a receiving port number in the plan information, a monitoring number, a conference camera number, and the like that may be received by the video networking terminal or a receiving port of the video networking terminal may be determined, and the plan information is sent to the corresponding streaming media platform according to the video data source, where the streaming media platform stores video data of the video data source requested by the plan information.

Step 204: and the streaming media platform determines the target video network terminal according to the terminal identifier, and sends a video stream corresponding to the split screen information of the target video network terminal to a corresponding port of the target video network terminal according to the media receiving port number corresponding to the split screen information.

Optionally, step 204 comprises:

In the embodiment of the present invention, after receiving the plan information, the streaming media platform may create a second socket of the streaming media platform according to the terminal identifier of the video network terminal in the plan information and the media receiving port number corresponding to the split screen information, then connect the second socket with a first socket corresponding to the corresponding video network terminal, where the corresponding socket is the first socket that is the same as the terminal identifier of the video network terminal used when creating the second socket and the media receiving port number corresponding to the split screen information, and then send the video stream corresponding to the receiving port to the video network terminal through the connection of the first socket and the second socket, where there may be a corresponding number of the first socket and the second socket according to the split screen information and the number of the media receiving port number corresponding to the split screen information.

In the embodiment of the invention, after each media receiving port receives the corresponding video stream, the video stream is played in a split screen mode corresponding to the media receiving port number so as to play the video of the video networking terminal, and each path of video does not need to confirm the video source, the media receiving port, the received video stream and the like one by one, but directly receives each path of video stream according to the preset information, so that the delay of the split screen video in the playing process is avoided.

Referring to fig. 3, showing an application example of the data transmission method of the video network of the present invention, as shown in fig. 3, a video network terminal can create and store the plan information in a play plan database, when receiving a third party or its own play plan request, if receiving a plan identifier input by a user, the video network server can search for corresponding target plan information in a memory according to the plan identifier, and create a socket, and send the target plan information to the video network server, the video network server can return a response message to the video network terminal indicating that the target plan information sent by the video network terminal is confirmed, the video network server then sends the target plan information to a streaming media platform, the streaming media platform can return a response message to the video network server indicating that the target plan information started by the video network server is confirmed, the streaming media connects to the video network terminal according to the target plan information through the socket, and the video network terminal can play the corresponding video stream on the corresponding split screen after receiving the video stream.

Referring to fig. 4, which shows a block diagram of an embodiment of a video data transmission apparatus 400 according to the present invention, as shown in fig. 4, the method may be applied to a video network, where the video network includes a video network server, a video network terminal and a streaming platform, and the apparatus may include:

the query module 401 is used for searching target plan information by the video network terminal according to the plan identification input by the user; the target plan information includes: the method comprises the steps that a terminal identification of a target video network terminal, a server identification of a target video network server, split screen information of the target video network terminal and a media receiving port number corresponding to the split screen information are obtained;

a first sending module 402, configured to send, by the video networking terminal, the plan information to the target video networking server according to the server identifier;

a second sending module 403, configured to forward the plan information to the streaming media platform by the target video networking server;

a video data sending module 404, configured to determine, by the streaming media platform, the target video networking terminal according to the terminal identifier, and send, according to the media receiving port number corresponding to the split screen information, a video stream corresponding to the split screen information of the target video networking terminal to a corresponding port of the target video networking terminal.

Optionally, the apparatus may further include:

Optionally, the video data sending module 404 includes:

Optionally, the apparatus may further include:

Optionally, the apparatus further comprises:

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

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

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

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

network Technology (Network Technology)

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

Switching Technology (Switching Technology)

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

Server Technology (Server Technology)

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

Storage Technology (Storage Technology)

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

Network Security Technology (Network Security Technology)

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

Service Innovation Technology (Service Innovation Technology)

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

Networking of the video network is as follows:

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

As shown in fig. 5, the video network is divided into an access network and a metropolitan network.

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

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

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

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

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

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

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

Video networking device classification

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

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

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

a node server:

as shown in fig. 6, the system mainly includes a network interface module 601, a switching engine module 602, a CPU module 603, and a disk array module 604;

the network interface module 601, the CPU module 603, and the disk array module 604 all enter the switching engine module 602; the switching engine module 602 performs an operation of looking up the address table 605 on the incoming packet, thereby obtaining the direction information of the packet; and stores the packet in a queue of a corresponding packet buffer 606 according to the packet's steering information; if the queue of the packet buffer 606 is nearly full, it is discarded; the switching engine module 602 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 604 mainly implements control over the hard disk, including initialization, read-write, and other operations of the hard disk; the CPU module 603 is mainly responsible for protocol processing with an access switch and a terminal (not shown in the figure), configuring an address table 605 (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 604.

The access switch:

as shown in fig. 7, the network interface module (downlink network interface module 701, uplink network interface module 702), the switching engine module 704 and the CPU module 704 are mainly included;

wherein, the packet (uplink data) coming from the downlink network interface module 701 enters the packet detection module 705; the packet detection module 705 detects whether the Destination Address (DA), the Source Address (SA), the packet type, and the packet length of the packet meet the requirements, if so, allocates a corresponding stream identifier (stream-id) and enters the switching engine module 704, otherwise, discards the stream identifier; the packet (downstream data) coming from the upstream network interface module 702 enters the switching engine module 704; the incoming data packet of the CPU module 704 enters the switching engine module 704; the switching engine module 704 performs an operation of looking up the address table 706 on the incoming packet, thereby obtaining the direction information of the packet; if the packet entering the switching engine module 704 is from the downstream network interface to the upstream network interface, the packet is stored in a queue of the corresponding packet buffer 707 in association with a stream-id; if the queue of the packet buffer 707 is close to full, discard; if the packet entering the switching engine module 704 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 707 according to the packet guiding information; if the queue of the packet buffer 707 is close to full, it is discarded.

The switching engine module 704 polls all packet buffer queues, which in this embodiment of the invention is divided into two cases:

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

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

The rate control module 708 is configured by the CPU module 704 to generate tokens for packet buffer queues going to the upstream network interface for all downstream network interfaces at programmable intervals to control the rate of upstream forwarding.

The CPU module 704 is mainly responsible for protocol processing with the node server, configuration of the address table 706, and configuration of the code rate control module 708.

Ethernet protocol conversion gateway：

As shown in fig. 8, the apparatus mainly includes a network interface module (a downlink network interface module 801, an uplink network interface module 802), a switch engine module 803, a CPU module 804, a packet detection module 805, an address table 806, a packet buffer 807, a rate control module 808, a MAC adding module 809, and a MAC deleting module 810.

Wherein, the data packet coming from the downlink network interface module 801 enters the packet detection module 805; the packet detection module 805 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 deleting module 810 subtracts MAC DA, MAC SA, length or frame type (2byte), and enters the corresponding receiving buffer, otherwise, discards it;

the downlink network interface module 801 detects the sending buffer of the port, and if there is a packet, acquires the ethernet MAC DA of the corresponding terminal according to the 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 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.

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

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

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

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

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

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

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

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

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

Claims

1. A video data transmission method is applied to a video network, wherein the video network comprises a video network server, a video network terminal and a streaming media platform, and the method comprises the following steps:

2. The method of claim 1, wherein after the step of the video network terminal sending the protocol information to the video network server, the method further comprises:

3. The method according to claim 2, wherein the step of sending the video stream corresponding to the split screen information of the target video network terminal to the corresponding port of the target video network terminal according to the media receiving port number corresponding to the split screen information includes:

4. The method according to claim 1, wherein the step of searching for the target plan information by the terminal of the video network according to the plan identifier input by the user is preceded by the step of:

5. The method according to claim 1, wherein after the step of searching for the target plan information by the terminal of the internet of view according to the plan identifier input by the user, the method further comprises:

and updating the target plan information according to the updating operation.

6. The method according to claim 1, wherein the step of searching for the target plan information by the terminal of the video network according to the plan identifier input by the user is preceded by the step of:

7. A video data transmission device is applied to a video network, wherein the video network comprises a video network server, a video network terminal and a streaming media platform, and the device comprises:

8. The apparatus of claim 7, further comprising:

9. The apparatus of claim 8, wherein the video data sending module comprises:

10. The apparatus of claim 7, further comprising: