CN110139060B - Video conference method and device - Google Patents
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- CN110139060B CN110139060B CN201910263022.XA CN201910263022A CN110139060B CN 110139060 B CN110139060 B CN 110139060B CN 201910263022 A CN201910263022 A CN 201910263022A CN 110139060 B CN110139060 B CN 110139060B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
- H04N19/172—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
Abstract
The invention provides a method and a device for video conference, wherein the method comprises the following steps: initializing a plurality of processes, and establishing a corresponding relation between the resource processes and resource IDs of resources required by the video conference established by the conference management platform; when a resource playing request sent by the conference management platform is received, a resource process handle corresponding to a target resource ID in the resource playing request is determined; in the resource process corresponding to the resource process handle, adopting a pre-opened resource thread to capture the target resource corresponding to the target resource ID; and coding the target resource by adopting an H.264 protocol to obtain an H.264 resource stream, and sending the H.264 resource stream to the video network terminal, so that the concurrence of multiple paths of resources is realized, the multiple paths of resources are displayed and output among different processes, and when a large amount of resources need to be output, the time consumption is reduced, and the resources are saved.
Description
Technical Field
The invention relates to the technical field of video networking, in particular to a method and a device for a video conference.
Background
The video network is a real-time large-bandwidth transmission network based on Ethernet hardware, is a special network for transmitting high-definition video and a special protocol at high speed, is a higher-level form of the Internet, and is a real-time network.
The traditional scheme only captures desktop screen streams as a source, namely encodes pictures displayed on the current desktop, converts the pictures into a video format and sends the video format, and cannot capture a plurality of screens simultaneously.
Disclosure of Invention
In view of the above, the present invention has been made to provide a method and apparatus for video conferencing that overcomes or at least partially solves the above problems, comprising:
a video conference method is applied to a video network, the video network comprises a conference management platform, a resource server and a video network terminal, and the method comprises the following steps:
initializing a plurality of processes, and establishing a corresponding relation between the resource processes and resource IDs of resources required by the video conference established by the conference management platform;
when a resource playing request sent by the conference management platform is received, a resource process handle corresponding to a target resource ID in the resource playing request is determined;
in the resource process corresponding to the resource process handle, adopting a pre-opened resource thread to capture the target resource corresponding to the target resource ID;
and encoding the target resource by adopting an H.264 protocol to obtain an H.264 resource stream, and sending the H.264 resource stream to the video networking terminal.
Optionally, before the step of determining the resource process handle corresponding to the target resource ID in the resource play request when receiving the resource play request sent by the conference management platform, the method further includes:
when receiving resource attribute information of resources required by the video conference, which is sent by the conference management platform, returning a resource list corresponding to the conference attribute information to the conference management platform; and the conference management platform is used for generating a resource playing request when detecting that the target resource ID in the resource list is triggered.
Optionally, the method further comprises:
initializing coding parameters;
and coding the target resource according to the coding parameters to obtain the H.264 resource flow meeting the coding parameters.
Optionally, the step of sending the h.264 resource stream to the video networking terminal comprises:
establishing a downlink communication link between the resource server and the video networking terminal;
and adopting the downlink communication link to send the H.264 resource stream to the video networking terminal.
Optionally, the target resource comprises any one of:
medical videos and teaching videos.
The encoding parameters include one or more of:
resolution of the image, video data frame rate, number of data frames, video data bit rate.
An apparatus for video conferencing, the apparatus comprising:
the corresponding relation establishing module is used for initializing a plurality of processes and establishing the corresponding relation between the resource processes and the resource ID of the resources required by the video conference established by the conference management platform;
a resource playing request receiving module, configured to receive a resource playing request sent by the conference management platform;
the resource process handle determining module is used for determining a resource process handle corresponding to the target resource ID in the resource playing request;
a target resource grabbing module, configured to grab a target resource corresponding to the target resource ID by using a pre-opened resource thread in a resource process corresponding to the resource process handle;
an h.264 resource flow obtaining module, configured to encode the target resource by using an h.264 protocol to obtain an h.264 resource flow;
and the H.264 resource stream sending module is used for sending the H.264 resource stream to the video network terminal.
Optionally, the method further comprises:
the resource attribute information receiving submodule is used for receiving the resource attribute information of the resources required by the video conference, which is sent by the conference management platform;
and the resource list sending submodule is used for returning the resource list corresponding to the conference attribute information to the conference management platform.
Optionally, the method further comprises:
the initialized coding parameter submodule is used for initializing coding parameters;
and the H.264 resource flow obtaining sub-module is used for coding the target resource according to the coding parameters to obtain the H.264 resource flow meeting the coding parameters.
Optionally, the method further comprises:
the downlink communication link establishing submodule is used for establishing a downlink communication link between the resource server and the video network terminal;
an H.264 resource stream sending submodule, configured to send the H.264 resource stream to the video networking terminal by using the downlink communication link
The invention has the following advantages: by initializing a plurality of processes and establishing a corresponding relation between the plurality of resource processes and a resource ID of a resource required by a video conference created by a conference management platform, when a resource playing request sent by the conference management platform is received, a resource process handle corresponding to a target resource ID in the resource playing request is determined, in the resource process corresponding to the resource process handle, a pre-opened resource thread is adopted to capture the target resource corresponding to the target resource ID, an H.264 protocol is adopted to encode the target resource to obtain an H.264 resource flow, and the H.264 resource flow is sent to the video network terminal, so that multi-channel resource concurrence is realized, the multi-channel resource is displayed and output among different processes, and when a large amount of resources need to be output, time consumption is reduced and resources are saved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic networking diagram of a video network according to an embodiment of the present invention;
fig. 2 is a schematic hardware structure diagram of a node server according to an embodiment of the present invention;
fig. 3 is a schematic hardware structure diagram of an access switch according to an embodiment of the present invention;
fig. 4 is a schematic hardware structure diagram of an ethernet protocol conversion gateway according to an embodiment of the present invention;
FIG. 5 is a flow chart illustrating steps of a method for video conferencing in accordance with an embodiment of the present invention;
fig. 6 is a block diagram of an apparatus for video conference according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
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 (Servertechnology)
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.
1. Video networking device classification
1.1 devices in the video network of the embodiment of the present invention can be mainly classified into 3 types: server, exchanger (including Ethernet protocol conversion gateway), terminal (including various set-top boxes, code board, memory, etc.). The video network as a whole can be divided into a metropolitan area network (or national network, global network, etc.) and an access network.
1.2 wherein the devices of the access network part can be mainly classified into 3 types: node server, access exchanger (including Ethernet protocol conversion gateway), terminal (including various set-top boxes, coding board, memory, etc.).
The specific hardware structure of each access network device is as follows:
a node server:
as shown in fig. 2, the system mainly includes a network interface module 201, a switching engine module 202, a CPU module 203, and a disk array module 204;
the network interface module 201, the CPU module 203, and the disk array module 204 all enter the switching engine module 202; the switching engine module 202 performs an operation of looking up the address table 205 on the incoming packet, thereby obtaining the direction information of the packet; and stores the packet in a queue of the corresponding packet buffer 206 based on the packet's steering information; if the queue of the packet buffer 206 is nearly full, it is discarded; the switching engine module 202 polls all packet buffer queues for forwarding if the following conditions are met: 1) the port send buffer is not full; 2) the queue packet counter is greater than zero. The disk array module 204 mainly implements control over the hard disk, including initialization, read-write, and other operations on the hard disk; the CPU module 203 is mainly responsible for protocol processing with an access switch and a terminal (not shown in the figure), configuring an address table 205 (including a downlink protocol packet address table, an uplink protocol packet address table, and a data packet address table), and configuring the disk array module 204.
The access switch:
as shown in fig. 3, the network interface module mainly includes a network interface module (a downlink network interface module 301 and an uplink network interface module 302), a switching engine module 303 and a CPU module 304;
wherein, the packet (uplink data) coming from the downlink network interface module 301 enters the packet detection module 305; the packet detection module 305 detects whether the Destination Address (DA), the Source Address (SA), the packet type, and the packet length of the packet meet the requirements, and if so, allocates a corresponding stream identifier (stream-id) and enters the switching engine module 303, otherwise, discards the stream identifier; the packet (downstream data) coming from the upstream network interface module 302 enters the switching engine module 303; the incoming data packet of the CPU module 304 enters the switching engine module 303; the switching engine module 303 performs an operation of looking up the address table 306 on the incoming packet, thereby obtaining the direction information of the packet; if the packet entering the switching engine module 303 is from the downstream network interface to the upstream network interface, the packet is stored in the queue of the corresponding packet buffer 307 in association with the stream-id; if the queue of the packet buffer 307 is nearly full, it is discarded; if the packet entering the switching engine module 303 is not from the downlink network interface to the uplink network interface, the data packet is stored in the queue of the corresponding packet buffer 307 according to the guiding information of the packet; if the queue of the packet buffer 307 is nearly full, it is discarded.
The switching engine module 303 polls all packet buffer queues, which in this embodiment of the present invention is divided into two cases:
if the queue is from the downlink network interface to the uplink network interface, the following conditions are met for forwarding: 1) the port send buffer is not full; 2) the queued packet counter is greater than zero; 3) obtaining a token generated by a code rate control module;
if the queue is not from the downlink network interface to the uplink network interface, the following conditions are met for forwarding: 1) the port send buffer is not full; 2) the queue packet counter is greater than zero.
The rate control module 308 is configured by the CPU module 304, and generates tokens for packet buffer queues from all downstream network interfaces to upstream network interfaces at programmable intervals to control the rate of upstream forwarding.
The CPU module 304 is mainly responsible for protocol processing with the node server, configuration of the address table 306, and configuration of the code rate control module 308.
Ethernet protocol conversion gateway：
As shown in fig. 4, the apparatus mainly includes a network interface module (a downlink network interface module 401 and an uplink network interface module 402), a switching engine module 403, a CPU module 404, a packet detection module 405, a rate control module 408, an address table 406, a packet buffer 407, a MAC adding module 409, and a MAC deleting module 410.
Wherein, the data packet coming from the downlink network interface module 401 enters the packet detection module 405; the packet detection module 405 detects whether the ethernet MAC DA, the ethernet MAC SA, the ethernet length or frame type, the video network destination address DA, the video network source address SA, the video network packet type, and the packet length of the packet meet the requirements, and if so, allocates a corresponding stream identifier (stream-id); then, the MAC deletion module 410 subtracts MAC DA, MAC SA, length or frame type (2byte) and enters the corresponding receiving buffer, otherwise, discards it;
the downlink network interface module 401 detects the sending buffer of the port, and if there is a packet, obtains the ethernet MAC DA of the corresponding terminal according to the destination address DA of the packet, adds the ethernet MAC DA of the terminal, the MAC SA of the ethernet protocol gateway, and the ethernet length or frame type, and sends the packet.
The other modules in the ethernet protocol gateway function similarly to the access switch.
A terminal:
the system mainly comprises a network interface module, a service processing module and a CPU module; for example, the set-top box mainly comprises a network interface module, a video and audio coding and decoding engine module and a CPU module; the coding board mainly comprises a network interface module, a video and audio coding engine module and a CPU module; the memory mainly comprises a network interface module, a CPU module and a disk array module.
1.3 devices of the metropolitan area network part can be mainly classified into 2 types: node server, node exchanger, metropolitan area server. The node switch mainly comprises a network interface module, a switching engine module and a CPU module; the metropolitan area server mainly comprises a network interface module, a switching engine module and a CPU module.
2. Video networking packet definition
2.1 Access network packet definition
The data packet of the access network mainly comprises the following parts: destination Address (DA), Source Address (SA), reserved bytes, payload (pdu), CRC.
As shown in the following table, the data packet of the access network mainly includes the following parts:
| DA | SA | Reserved | Payload | CRC |
wherein:
the Destination Address (DA) is composed of 8 bytes (byte), the first byte represents the type of the data packet (such as various protocol packets, multicast data packets, unicast data packets, etc.), there are 256 possibilities at most, the second byte to the sixth byte are metropolitan area network addresses, and the seventh byte and the eighth byte are access network addresses;
the Source Address (SA) is also composed of 8 bytes (byte), defined as the same as the Destination Address (DA);
the reserved byte consists of 2 bytes;
the payload part has different lengths according to different types of datagrams, and is 64 bytes if the datagram is various types of protocol packets, and is 32+1024 or 1056 bytes if the datagram is a unicast packet, of course, the length is not limited to the above 2 types;
the CRC consists of 4 bytes and is calculated in accordance with the standard ethernet CRC algorithm.
2.2 metropolitan area network packet definition
The topology of a metropolitan area network is a graph and there may be 2, or even more than 2, connections between two devices, i.e., there may be more than 2 connections between a node switch and a node server, a node switch and a node switch, and a node switch and a node server. However, the metro network address of the metro network device is unique, and in order to accurately describe the connection relationship between the metro network devices, parameters are introduced in the embodiment of the present invention: a label to uniquely describe a metropolitan area network device.
In this specification, the definition of the Label is similar to that of the Label of MPLS (Multi-Protocol Label Switch), and assuming that there are two connections between the device a and the device B, there are 2 labels for the packet from the device a to the device B, and 2 labels for the packet from the device B to the device a. The label is classified into an incoming label and an outgoing label, and assuming that the label (incoming label) of the packet entering the device a is 0x0000, the label (outgoing label) of the packet leaving the device a may become 0x 0001. The network access process of the metro network is a network access process under centralized control, that is, address allocation and label allocation of the metro network are both dominated by the metro server, and the node switch and the node server are both passively executed, which is different from label allocation of MPLS, and label allocation of MPLS is a result of mutual negotiation between the switch and the server.
As shown in the following table, the data packet of the metro network mainly includes the following parts:
| DA | SA | Reserved | label (R) | Payload | CRC |
Namely Destination Address (DA), Source Address (SA), Reserved byte (Reserved), tag, payload (pdu), CRC. The format of the tag may be defined by reference to the following: the tag is 32 bits with the upper 16 bits reserved and only the lower 16 bits used, and its position is between the reserved bytes and payload of the packet.
Referring to fig. 5, a flowchart illustrating steps of a method for video conferencing according to an embodiment of the present invention is shown, where the method is applied to a video network, where the video network includes a conference management platform, a resource server, and a video network terminal, and specifically includes the following steps:
the process is a running activity of a program with independent functions on a certain data set, is an active entity, each process has an address space of the process, and any process can be executed concurrently with other processes.
The process creating process comprises the following steps: applying for obtaining a unique digital identifier, and retrieving a blank PCB (Process Control Block) from a PCB set; allocating resources; a process control block is initialized.
In a specific implementation, the conference management platform creates a video conference and sends a resource ID of a resource required by the video conference to the resource server, and the resource server receives the resource ID, initializes a plurality of processes, and establishes a one-to-one correspondence relationship between the plurality of resource processes and the resource ID of the resource required by the video conference created by the conference management platform.
102, when receiving a resource playing request sent by the conference management platform, determining a resource process handle corresponding to a target resource ID in the resource playing request;
where a handle is an identifier, which may be used to identify an object or item, each resource process may be identified by a particular handle.
In a specific implementation, when the resource server receives a resource playing request sent by the conference management platform, the resource server may query a corresponding resource process handle according to a target resource ID in the resource playing request.
In an embodiment of the present invention, before step 102, the following steps may be further included:
when receiving resource attribute information of resources required by the video conference, which is sent by the conference management platform, returning a resource list corresponding to the resource attribute information to the conference management platform; and the conference management platform is used for generating a resource playing request when detecting that the target resource ID in the resource list is triggered.
103, adopting a pre-opened resource thread to capture a target resource corresponding to the target resource ID in the resource process corresponding to the resource process handle;
the threads are the minimum unit of the operating system capable of performing operation scheduling, are included in the process and are actual operation units in the process, one thread refers to a single-sequence control flow in the process, one process can concurrently execute a plurality of threads, each thread executes different tasks in parallel, and the threads in different processes can also concurrently execute. In an operating system with introduced threads, a process is generally used as a basic unit for allocating resources, and a thread is used as a basic unit for independent running and independent scheduling.
In specific implementation, in a resource process corresponding to a resource process handle, a pre-opened resource thread can be adopted, a target resource corresponding to a target resource ID is grabbed according to the received target resource ID, a plurality of processes can be executed concurrently, and the resource thread is adopted, so that the concurrent execution degree among the processes in the system can be more efficiently improved, the server resource is saved, and the performance is improved.
In an embodiment of the invention, the target resource may include any one of:
medical videos and teaching videos.
And 104, coding the target resource by adopting an H.264 protocol to obtain an H.264 resource stream, and sending the H.264 resource stream to the video networking terminal.
Where encoding is the process of converting information from one form or format to another.
In specific implementation, an H.264 coding protocol is adopted to code a target resource to obtain an H.264 resource stream, and a resource server sends the H.264 resource stream to a video network terminal for the video network terminal to watch.
In a specific implementation, a user determines resources required by a video conference on a conference management platform, the conference management platform sends resource attribute information of the resources required by the video conference to a resource server, and the resource attribute information can be names, numbers, resource IDs and the like of the resources.
When the resource server receives the resource attribute information, initializing a plurality of processes, establishing a corresponding relation between the plurality of processes and a resource ID of a resource required by the video conference created by the conference management platform, returning a resource list corresponding to the resource attribute information to the conference management platform, and receiving the resource list by the conference management platform.
And when the user triggers the target resource ID in the resource list, the conference management platform generates a resource playing request and sends the resource playing request to the resource server. For example, before a meeting, a pathological resource list is obtained from a resource server, and when a certain pathological resource is watched, a play instruction is sent to an access server.
In an embodiment of the present invention, the method may further include the following steps:
initializing coding parameters; and coding the target resource according to the coding parameters to obtain the H.264 resource flow meeting the coding parameters.
In a specific implementation, the resource server initializes the encoding parameters, and may encode the target resource according to the encoding parameters, thereby obtaining the h.264 resource stream satisfying the encoding parameters.
In an embodiment of the present invention, the step of sending the h.264 resource stream to the video networking terminal includes:
establishing a downlink communication link between the resource server and the video networking terminal; and adopting the downlink communication link to send the H.264 resource stream to the video networking terminal.
In a specific implementation, the resource server sends the h.264 resource stream to the video networking terminal through a downlink communication link established with the video networking terminal.
In an embodiment of the invention, the encoding parameters may include one or more of:
resolution of the image, video data frame rate, number of data frames, video data bit rate.
In a specific implementation, the resolution of an image refers to the amount of information stored in the image, which is how many pixels are in each inch of the image, i.e., the number of pixels; video data frame rate is the number of images per second; the video data bit rate refers to the number of bits transmitted per second, and the higher the bit rate, the more months of data transmitted per second, and the clearer the image quality. The frame rate of video data in the encoding parameters is set, and H.264 resource flow with the appointed frame rate can be obtained.
In the embodiment of the invention, by initializing a plurality of processes and establishing a corresponding relation between the plurality of resource processes and a resource ID of a resource required by a video conference created by a conference management platform, when a resource playing request sent by the conference management platform is received, a resource process handle corresponding to a target resource ID in the resource playing request is determined, in the resource process corresponding to the resource process handle, a pre-opened resource thread is adopted to capture the target resource corresponding to the target resource ID, an H.264 protocol is adopted to encode the target resource to obtain an H.264 resource flow, and the H.264 resource flow is sent to the video network terminal, so that the concurrence of multiple paths of resources is realized, the multiple paths of resources are displayed and output among different processes, and when a large amount of resources need to be output, the time consumption is reduced and the resources are saved.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
Referring to fig. 6, a block diagram of a video conference apparatus according to an embodiment of the present invention is shown, which may specifically include the following modules:
a corresponding relationship establishing module 601, configured to initialize multiple processes, and establish a corresponding relationship between the multiple resource processes and a resource ID of a resource required by the video conference created by the conference management platform;
a resource playing request receiving module 602, configured to receive a resource playing request sent by the conference management platform;
the resource process handle determining module 603 is configured to determine a resource process handle corresponding to the target resource ID in the resource playing request;
a target resource fetching module 604, configured to fetch, in the resource process corresponding to the resource process handle, a target resource corresponding to the target resource ID by using a pre-opened resource thread;
an h.264 resource flow obtaining module 605, configured to encode the target resource by using an h.264 protocol to obtain an h.264 resource flow;
an h.264 resource stream sending module 606, configured to send the h.264 resource stream to the video networking terminal.
In an embodiment of the present invention, the following sub-modules may be further included:
the resource attribute information receiving submodule is used for receiving the resource attribute information of the resources required by the video conference, which is sent by the conference management platform;
and the resource list sending submodule is used for returning the resource list corresponding to the conference attribute information to the conference management platform.
In an embodiment of the present invention, the following sub-modules may be further included:
the initialized coding parameter submodule is used for initializing coding parameters;
and the H.264 resource flow obtaining sub-module is used for coding the target resource according to the coding parameters to obtain the H.264 resource flow meeting the coding parameters.
In an embodiment of the present invention, the following sub-modules may be further included:
the downlink communication link establishing submodule is used for establishing a downlink communication link between the resource server and the video network terminal;
and the H.264 resource flow sending submodule is used for sending the H.264 resource flow to the video networking terminal by adopting the downlink communication link.
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.
An embodiment of the present invention also provides an electronic device, which may include a processor, a memory, and a computer program stored on the memory and capable of running on the processor, wherein the computer program, when executed by the processor, implements the steps of the method for video conferencing as above.
An embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, realizes the steps of the method for video conferencing as above.
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 method and the device for video conference provided by the present invention are introduced in detail, and the principle and the implementation of the present invention are explained by applying specific examples, and the description of the above embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (9)
1. A method for video conference is applied to a video network, wherein the video network comprises a conference management platform, a resource server and a video network terminal, and the method comprises the following steps:
initializing a plurality of processes, and establishing a corresponding relation between a plurality of resource processes and resource IDs of resources required by the video conference established by the conference management platform; any process in the resource processes can be executed concurrently with other processes, so that the display and output of the multi-path resources among different processes are realized; when a resource playing request sent by the conference management platform is received, a resource process handle corresponding to a target resource ID in the resource playing request is determined;
in the resource process corresponding to the resource process handle, adopting a pre-opened resource thread to capture the target resource corresponding to the target resource ID;
encoding the target resource by adopting an H.264 protocol to obtain an H.264 resource flow, and sending the H.264 resource flow to the video networking terminal;
wherein the resource refers to desktop screen flow.
2. The method according to claim 1, wherein before the step of determining the resource process handle corresponding to the target resource ID in the resource playing request when receiving the resource playing request sent by the conference management platform, the method further comprises:
when receiving resource attribute information of resources required by the video conference, which is sent by the conference management platform, returning a resource list corresponding to the resource attribute information to the conference management platform; and the conference management platform is used for generating a resource playing request when detecting that the target resource ID in the resource list is triggered.
3. The method of claim 1 or 2, further comprising:
initializing coding parameters;
coding the target resource according to the coding parameters to obtain an H.264 resource stream meeting the coding parameters;
wherein the encoding parameters include one or more of:
resolution of the image, video data frame rate, number of data frames, video data bit rate.
4. The method of claim 1, wherein the step of sending the h.264 resource stream to the video networking terminal comprises:
establishing a downlink communication link between the resource server and the video networking terminal;
and adopting the downlink communication link to send the H.264 resource stream to the video networking terminal.
5. The method of claim 1, wherein the target resource comprises any one of:
medical videos and teaching videos.
6. An apparatus for video conferencing, the apparatus comprising:
the corresponding relation establishing module is used for initializing a plurality of processes and establishing the corresponding relation between a plurality of resource processes and the resource ID of the resources required by the video conference established by the conference management platform;
a resource playing request receiving module, configured to receive a resource playing request sent by the conference management platform; wherein the resource refers to desktop screen flow;
the resource process handle determining module is used for determining a resource process handle corresponding to the target resource ID in the resource playing request; any process in the resource processes can be executed concurrently with other processes, so that the display and output of the multi-path resources among different processes are realized;
a target resource grabbing module, configured to grab a target resource corresponding to the target resource ID by using a pre-opened resource thread in a resource process corresponding to the resource process handle;
an h.264 resource flow obtaining module, configured to encode the target resource by using an h.264 protocol to obtain an h.264 resource flow;
and the H.264 resource stream sending module is used for sending the H.264 resource stream to the video network terminal.
7. The apparatus of claim 6, further comprising:
the resource attribute information receiving submodule is used for receiving the resource attribute information of the resources required by the video conference, which is sent by the conference management platform;
and the resource list sending submodule is used for returning the resource list corresponding to the resource attribute information to the conference management platform.
8. The apparatus of claim 6 or 7, further comprising:
the initialized coding parameter submodule is used for initializing coding parameters;
and the H.264 resource flow obtaining sub-module is used for coding the target resource according to the coding parameters to obtain the H.264 resource flow meeting the coding parameters.
9. The apparatus of claim 6, further comprising:
the downlink communication link establishing submodule is used for establishing a downlink communication link between the resource server and the video network terminal;
and the H.264 resource flow sending submodule is used for sending the H.264 resource flow to the video networking terminal by adopting the downlink communication link.
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