CN111147859A - Video processing method and device - Google Patents
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- CN111147859A CN111147859A CN201911421798.6A CN201911421798A CN111147859A CN 111147859 A CN111147859 A CN 111147859A CN 201911421798 A CN201911421798 A CN 201911421798A CN 111147859 A CN111147859 A CN 111147859A
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- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/40—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
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Abstract
According to the video processing method and device provided by the embodiment of the invention, the conference management platform is connected with the transcoding server, when the terminal equipment is not suitable for the video coding format of the video data required to be acquired, the video data is transcoded into the video coding format suitable for the terminal equipment by the transcoding server and then returned to the terminal equipment, so that the terminal equipment can normally play the video data which is not suitable for the video coding format under the condition of not influencing user experience, the applicability of a high-definition live conference in a video network is improved, and the video data is transcoded by adopting the virtual terminal, so that the parallel processing of a transcoding process is realized, and the transcoding efficiency is improved.
Description
Technical Field
The invention relates to the technical field of video networking, in particular to a video processing method and device.
Background
The video networking is an important milestone for network development, is a higher-level form of the Internet, is a real-time network, can realize the real-time transmission of full-network high-definition videos which cannot be realized by the existing Internet, and pushes a plurality of Internet applications to high-definition video. Therefore, a multi-person high-definition live conference can be carried out through the video network, and the work communication modes of people are enriched.
In the existing video networking terminal, video streams of a live conference are uniformly sent to each terminal device accessed to the live conference through a video networking conference management platform, so that a multi-user high-definition live conference is realized.
However, the attribute configurations of the terminal devices are different, so that the video coding formats supported by the terminal devices may be different, and thus, some terminal devices cannot normally play video streams in some video coding formats, which affects the applicability of high-definition live conferences in the video network and affects user experience.
Disclosure of Invention
In view of the above, embodiments of the present invention are proposed to provide a video processing method and apparatus that overcome or at least partially solve the above-mentioned problems.
In order to solve the above problem, a first aspect of the embodiments of the present invention discloses a video processing method, which is applied to a conference management platform in a video network, where the conference management platform is respectively in communication connection with a terminal device and a transcoding server through the video network, and the transcoding server is internally provided with a transcoding virtual terminal, where the method includes:
receiving a video acquisition instruction sent by the terminal equipment, wherein the video acquisition instruction comprises: video identification;
inquiring corresponding first video data according to the video identification;
under the condition that the video coding format of the first video data is not the target video coding format, sending the first video data to the transcoding server to trigger the transcoding server to convert the first video data into second video data in the target coding format through a built-in transcoding virtual terminal of the transcoding server, wherein the target coding format is the video coding format suitable for the terminal equipment;
and receiving the second video data sent by the transcoding virtual terminal, and forwarding the second video data to the terminal equipment.
Optionally, before the step of sending the first video data to the transcoding server, the method further includes:
sending a video transcoding instruction to the transcoding server, wherein the video transcoding instruction comprises: a target video encoding format;
receiving a video networking number of a transcoding virtual terminal returned by the transcoding server according to the video transcoding instruction, wherein the transcoding virtual terminal is obtained by distributing the transcoding server from a built-in virtual terminal according to the target coding format;
and establishing communication connection with the transcoding virtual terminal according to the video networking number of the transcoding virtual terminal.
Optionally, before the step of receiving the video acquisition instruction sent by the terminal device, the method further includes:
receiving an access request sent by the terminal equipment, wherein the access request comprises: attribute information of the terminal device;
and determining a target coding format applicable to the terminal equipment according to the attribute information of the terminal equipment.
Optionally, the step of determining and storing a target encoding format applicable to the terminal device according to the attribute information of the terminal device includes:
determining a target coding format and target video configuration parameters used by the terminal equipment according to the attribute information of the terminal equipment;
the step of sending the first video data to the transcoding server to trigger the transcoding server to convert the first video data into second video data in a target encoding format through a built-in transcoding virtual terminal of the transcoding server under the condition that the video encoding format of the first video data is not in the target video encoding format includes:
and under the condition that the video coding format of the first video data is not the target video coding format, sending the first video data to the transcoding server to trigger the transcoding server to adjust the first video data according to the target video configuration parameters through a built-in transcoding virtual terminal of the transcoding server, and transcoding the adjusted first video data into second video data in the target coding format.
Wherein the target video configuration parameters include: target resolution, frame rate.
Optionally, the conference management platform and the terminal device follow an internet protocol, the transcoding server follows a video networking protocol, the conference management platform and the transcoding server are in communication connection through a protocol conversion server, and the protocol conversion server is used for performing interconversion between the internet protocol and the video networking protocol on the packaging format of the data packets of the path.
The second aspect of the embodiment of the present invention discloses a video processing apparatus, which is applied to a conference management platform in a video network, wherein the conference management platform is respectively in communication connection with a terminal device and a transcoding server through the video network, the transcoding server is internally provided with a transcoding virtual terminal, and the apparatus includes:
a first receiving module, configured to receive a video acquisition instruction sent by the terminal device, where the video acquisition instruction includes: video identification;
the query module is used for querying corresponding first video data according to the video identification;
the transcoding module is used for sending the first video data to the transcoding server under the condition that the video coding format of the first video data is not the target video coding format, so as to trigger the transcoding server to convert the first video data into second video data of the target coding format through a built-in transcoding virtual terminal of the transcoding server, wherein the target coding format is a video coding format suitable for the terminal equipment;
and the forwarding module is used for receiving the second video data sent by the transcoding virtual terminal and forwarding the second video data to the terminal equipment.
Optionally, the apparatus further includes:
a sending module, configured to send a video transcoding instruction to the transcoding server, where the video transcoding instruction includes: a target video encoding format;
the second receiving module is used for receiving the video networking number of the transcoding virtual terminal returned by the transcoding server according to the video transcoding instruction, wherein the transcoding virtual terminal is obtained by distributing the transcoding server from a built-in virtual terminal according to the target coding format;
and the connection module is used for establishing communication connection with the transcoding virtual terminal according to the video networking number of the transcoding virtual terminal.
Optionally, the apparatus further includes:
a third receiving module, configured to receive an access request sent by the terminal device, where the access request includes: attribute information of the terminal device;
and the determining module is used for determining and storing the target coding format applicable to the terminal equipment according to the attribute information of the terminal equipment.
Optionally, the determining module includes:
the determining submodule is used for determining a target coding format and target video configuration parameters used by the terminal equipment according to the attribute information of the terminal equipment;
the transcoding module comprises:
and the transcoding sub-module is used for sending the first video data to the transcoding server under the condition that the video coding format of the first video data is not the target video coding format, so as to trigger the transcoding server to adjust the first video data according to the target video configuration parameters through a built-in transcoding virtual terminal of the transcoding server, and transcode the adjusted first video data into second video data in the target coding format.
Wherein the target video configuration parameters include: target resolution, frame rate.
Optionally, the conference management platform and the terminal device follow an internet protocol, the transcoding server follows a video networking protocol, the conference management platform and the transcoding server are in communication connection through a protocol conversion server, and the protocol conversion server is used for performing interconversion between the internet protocol and the video networking protocol on the packaging format of the data packets of the path.
The embodiment of the invention has the following advantages:
according to the video processing method and device provided by the embodiment of the invention, the conference management platform is connected with the transcoding server, when the terminal equipment is not suitable for the video coding format of the video data required to be acquired, the video data is transcoded into the video coding format suitable for the terminal equipment by the transcoding server and then returned to the terminal equipment, so that the terminal equipment can normally play the video data which is not suitable for the video coding format under the condition of not influencing user experience, the applicability of a high-definition live conference in a video network is improved, and the video data is transcoded by adopting the virtual terminal, so that the parallel processing of a transcoding process is realized, and the transcoding efficiency is improved.
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FIG. 1 is a flow chart of the steps of a video processing method of the present invention;
FIG. 2 is a flow chart of the steps of another video processing method of the present invention;
FIG. 3 is a schematic diagram of data transmission in a video processing process according to the present invention;
FIG. 4 is a block diagram of a video processing 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.
Referring to fig. 1, a video processing method of the present invention is shown, and is applied to a conference management platform in a video network, where the conference management platform is respectively in communication connection with a terminal device and a transcoding server through the video network, and the method includes:
It should be noted that the conference management platform is used for connecting with a plurality of terminal devices through a video network, so as to forward audio and video data of the terminal devices to other terminal devices, and thus, a high-definition video live conference among the plurality of devices is achieved.
In the embodiment of the present invention, after the terminal device used by the user accesses the conference management platform, the video data corresponding to the video acquisition instruction may be acquired by sending the video acquisition instruction carrying the video tag to the conference management platform.
However, since the video encoding format of the video data corresponding to the video identifier is not necessarily supported by the terminal device, if the video data that does not support the video encoding format is directly returned to the terminal device, a situation that the terminal device cannot play the video data may occur, for example: some terminal devices can support video data in 2K resolution and H264 video coding format due to old models, while terminal devices with newer models can generate video data in 4K resolution and H265 video coding format, and if the conference management platform directly returns the video data in the H264 video coding format to the terminal device only supporting the H264 video coding format, the terminal device cannot analyze the obtained video data, so that the video data cannot be played, and the viewing experience of a user is seriously influenced.
And 102, inquiring corresponding first video data according to the video identification.
In the embodiment of the present invention, the conference management platform may locally query the corresponding first video data according to the video identifier in the video acquisition instruction, and it can be understood that the first video data may be existing video data stored in a file form, or may be a media stream form being output by other terminal devices, that is, live video data output by the terminal devices.
In the embodiment of the present invention, after querying first video data corresponding to a video identifier, a conference management platform parses source data of the first video data to obtain a video coding format of the first video data, compares the video coding format of the first video data with a target video coding format supported by the terminal device, and if the video coding format of the first video data is different from the target video coding format, it indicates that the terminal device cannot normally play the first video data. The conference management platform forwards the first video data to the connected transcoding server through stream adjustment, and the transcoding server converts the first video data into second video data in a target video coding format.
Further, the conference management platform schedules the video stream of the first video data to the transcoding virtual terminal, so that the transcoding virtual terminal transcodes the first video data into the second video data in the target video coding format. Therefore, the video data of the coding format which is not suitable for the terminal can be efficiently converted.
And 104, receiving the second video data sent by the transcoding virtual terminal, and forwarding the second video data to the terminal equipment.
In the embodiment of the invention, after transcoding to obtain the second video data, the transcoding server returns the second video data to the conference management platform, and the conference management platform directly returns the second video data to the terminal device. The terminal equipment can normally analyze the second video data and play the second video data for the user to watch due to the target coding format supported by the terminal equipment of the video coding format of the second video data. The whole transcoding process is automatically operated by the conference management platform and cannot be perceived by a user, so that the user does not need to pay attention to the video coding format of the video data when the user wants to watch the video data, the user can watch the video data normally, and the actual experience of the user cannot be influenced.
In the embodiment of the present invention, at this time, the connection relationship between the transcoding virtual terminal and the conference management platform is actually equivalent to the connection relationship between the terminal device and the conference management platform, but the difference is that the video data provided by the transcoding virtual terminal is obtained by transcoding the video data provided by the conference management platform, so that the second video data actually obtained by the terminal device from the conference management platform is actually the second video data provided by the transcoding virtual terminal, but the second video data is only in a different video encoding format from the first video data, and the video contents are completely the same, so that the actual viewing experience of the user is not affected.
According to the video processing method provided by the embodiment of the invention, the conference management platform is connected with the transcoding server, when the terminal equipment is not suitable for the video coding format of the video data required to be acquired, the video data is transcoded into the video coding format suitable for the terminal equipment by the transcoding server and then returned to the terminal equipment, so that the terminal equipment can normally play the video data which is not suitable for the video coding format under the condition of not influencing user experience, the applicability of a high-definition live conference in a video network is improved, and the video data is transcoded by adopting the virtual terminal, so that the parallel processing of a transcoding process is realized, and the transcoding efficiency is improved.
Referring to fig. 2, another video processing method of the present invention is shown, and is applied to a conference management platform in a video network, where the conference management platform is respectively in communication connection with a terminal device and a transcoding server through the video network, and the transcoding server is internally provided with a transcoding virtual terminal, and the method includes:
In the embodiment of the invention, when a user needs to watch live video data in a conference management platform through terminal equipment, the terminal equipment needs to be accessed to the conference management platform, and the access request needs to include video networking numbers, physical addresses and attribute information of the terminal equipment. And the video networking number and physical address user conference management platform confirms whether the identity of the terminal equipment is legal or not, and if so, the terminal equipment is allowed to access the conference management platform.
In this embodiment of the present invention, the attribute information may include information such as a model of the terminal device, a hardware configuration, and a target video encoding format to which the terminal device is applied, and the conference management platform will record the target video encoding format. Of course, other target video configuration parameters more suitable for the terminal device may be determined according to the attribute information of the terminal device, for example: and if the resolution of the video data is inconsistent with the resolution supported by the terminal equipment, the picture of the video data watched by the user is blocked or blurred, so that the resolution is suitable for the attribute parameters of the terminal equipment, and the most suitable resolution of the terminal equipment can be determined. The target video configuration parameters may further include a frame rate, and if the frame rate of the video is higher than the maximum frame rate supported by the display card of the terminal device, the video frame of the video data may be deleted by the device display card, so that a playing picture of the video data may be jammed, and the like. Of course, the target video configuration parameter may be other parameters that affect the playing effect of the terminal device for playing the video data, and may be specifically set according to actual requirements, which is not limited herein.
This step can refer to the detailed description of step 101, which is not repeated herein.
And step 204, inquiring corresponding first video data according to the video identification.
This step can refer to the detailed description of step 102, which is not repeated here.
In the embodiment of the invention, if the video coding format of the first video data required to be acquired by the user is not the target coding format, the conference management platform sends a video transcoding instruction containing the target video coding format to the transcoding server, so that the transcoding server allocates a locally-set transcoding virtual terminal, and configures the transcoding virtual terminal according to the target video coding format. Of course, if the first video data is in the target video coding format, the conference management platform directly returns the first video data to the terminal device.
Furthermore, the configuration parameters of the first video data, such as the configuration parameters affecting the video playing effect, such as resolution, frame rate, etc., can be adjusted according to the target video configuration parameters of the terminal device, and the first video data is compressed into the target video encoding format after the adjustment is completed, so that the user can view the video data with better video playing effect through the terminal device, and the user experience is improved.
And step 206, receiving the video networking number of the transcoding virtual terminal returned by the transcoding server according to the video transcoding instruction, wherein the transcoding virtual terminal is obtained by distributing the transcoding server from a built-in virtual terminal according to the target coding format.
In the embodiment of the invention, after the transcoding virtual terminal is configured, the transcoding server returns the video networking number of the transcoding virtual terminal to the conference management platform. It should be noted that a plurality of transcoding virtual terminals may be preset in the transcoding server, and corresponding video networking numbers are allocated to the plurality of transcoding virtual terminals, and when a transcoding virtual terminal needs to be allocated, a transcoding virtual terminal in an idle state is allocated to process a corresponding process.
And step 207, establishing communication connection with the transcoding virtual terminal according to the video networking number of the transcoding virtual terminal.
In the embodiment of the invention, the transcoding server utilizes the transcoding virtual terminal to be mutually connected with the conference management platform, so that the transcoding server can process the non-transcoding processes in parallel, and the data processing efficiency of the transcoding server is improved.
This step can refer to the detailed description of step 103, which is not repeated herein.
This step can refer to the detailed description of step 104, which is not repeated here.
Specifically, referring to fig. 3, a schematic diagram of data transmission in a video processing process according to an embodiment of the present invention is shown, where a conference management platform a1 is in communication connection with a terminal device a4, a transcoding server A3, and a transcoding virtual terminal a31 through a video network server a2, the terminal device a4 sends a video acquisition instruction to the conference management platform a1 through the video network server a2, the conference management platform a sends a video transcoding instruction to a transcoding server A3 through the video network server a2, the transcoding server A3 returns an assigned transcoding virtual terminal video network number to the conference management platform a1 through the video network server a2, the conference management platform then forwards the first video data to the transcoding virtual terminal a31 through the video network a2, the transcoding virtual terminal forwards the generated second video data to the conference management platform a1 through the video network server a2, finally, the conference management platform a1 returns the second video data to the terminal device a4 through the video network server.
According to the other video processing method provided by the embodiment of the invention, the conference management platform is connected with the transcoding server, when the terminal equipment is not suitable for the video coding format of the video data required to be acquired, the video data is transcoded into the video coding format suitable for the terminal equipment by the transcoding server and then returned to the terminal equipment, so that the terminal equipment can normally play the video data which is not suitable for the video coding format under the condition of not influencing the user experience, and the applicability of a high-definition live conference in the video network is improved. And the transcoding virtual terminal in the transcoding server performs video coding format conversion on the video, so that parallel processing of a transcoding process is realized, the video transcoding efficiency is improved, the configuration parameters of the video data are further optimized according to the target video configuration parameters, the playing effect of watching the video data through the terminal equipment by a user is improved, and the user experience is improved.
Referring to fig. 4, a video processing apparatus of the present invention is shown, which is applied to a conference management platform in a video network, and the conference management platform is respectively in communication connection with a terminal device and a transcoding server through the video network, and the apparatus includes:
a first receiving module 301, configured to receive a video obtaining instruction sent by the terminal device, where the video obtaining instruction includes: and identifying the video.
And the query module 302 is configured to query the corresponding first video data according to the video identifier.
A transcoding module 303, configured to send the first video data to the transcoding server when the video encoding format of the first video data is not the target video encoding format, so as to trigger the transcoding server to convert the first video data into the second video data in the target encoding format through a built-in transcoding virtual terminal of the transcoding server, where the target encoding format is a video encoding format suitable for the terminal device.
A forwarding module 304, configured to receive the second video data sent by the transcoding virtual terminal, and forward the second video data to the terminal device.
Optionally, the apparatus further includes:
a sending module 305, configured to send a video transcoding instruction to the transcoding server, where the video transcoding instruction includes: a target video encoding format.
A second receiving module 306, configured to receive a video networking number of a transcoding virtual terminal returned by the transcoding server according to the video transcoding instruction, where the transcoding virtual terminal is obtained by the transcoding server through distribution from a built-in virtual terminal according to the target encoding format.
And a connection module 307, configured to establish a communication connection with the transcoding virtual terminal according to the video networking number of the transcoding virtual terminal.
Optionally, the transcoding module 303 includes:
the transcoding submodule 3031 is configured to, when the video coding format of the first video data is not the target video coding format, send the first video data to the transcoding server to trigger the transcoding server to adjust the first video data according to the target video configuration parameter through a built-in transcoding virtual terminal of the transcoding server, and transcode the adjusted first video data into second video data in the target coding format; wherein the target video configuration parameters include: target resolution, frame rate.
Optionally, the apparatus further includes:
a third receiving module 308, configured to receive an access request sent by the terminal device, where the access request includes: attribute information of the terminal device.
A determining module 309, configured to determine and store a target coding format applicable to the terminal device according to the attribute information of the terminal device.
Optionally, the determining module 309 includes:
the determining submodule 3091 is configured to determine, according to the attribute information of the terminal device, a target encoding format and target video configuration parameters used by the terminal device.
Optionally, the conference management platform and the terminal device follow an internet protocol, the transcoding server follows a video networking protocol, the conference management platform and the transcoding server are in communication connection through a protocol conversion server, and the protocol conversion server is used for performing interconversion between the internet protocol and the video networking protocol on the packaging format of the data packets of the path.
The video processing device provided by the embodiment of the invention connects the conference management platform and the transcoding server, when the terminal device is not suitable for the video coding format of the video data required to be acquired by the terminal device, the video data is transcoded into the video coding format suitable for the terminal device by a transcoding server, then returns to the terminal equipment, so that the terminal equipment can normally play the video data which is not suitable for the video coding format under the condition of not influencing the user experience, the applicability of the high-definition live conference in the video network is improved, and the virtual terminal is adopted to transcode the video data, thereby realizing the parallel processing of the transcoding process, improving the transcoding efficiency, and the transcoding virtual terminal in the transcoding server performs video coding format conversion on the video, so that parallel processing of a transcoding process is realized, and the video transcoding efficiency is improved.
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.
To better illustrate the solution of the invention, the following detailed description of the video network is given:
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 501, a switching engine module 502, a CPU module 503, and a disk array module 504;
the network interface module 501, the CPU module 503 and the disk array module 504 all enter the switching engine module 502; the switching engine module 502 performs an operation of looking up the address table 505 on the incoming packet, thereby obtaining the direction information of the packet; and stores the packet in a corresponding queue of the packet buffer 506 based on the packet's steering information; if the queue of the packet buffer 506 is nearly full, it is discarded; the switching engine module 502 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 504 mainly implements control over the hard disk, including initialization, read-write, and other operations of the hard disk; the CPU module 503 is mainly responsible for protocol processing with an access switch and a terminal (not shown in the figure), configuring an address table 505 (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 504.
The access switch:
as shown in fig. 7, the network interface module (downlink network interface module 601, uplink network interface module 602), switching engine module 603, and CPU module 604 are mainly included;
wherein, the packet (uplink data) coming from the downlink network interface module 601 enters the packet detection module 605; the packet detection module 605 detects whether the Destination Address (DA), the Source Address (SA), the type of the packet, and the length of the packet meet the requirements, if so, allocates a corresponding stream identifier (stream-id) and enters the switching engine module 603, otherwise, discards the stream identifier; the packet (downstream data) coming from the upstream network interface module 602 enters the switching engine module 603; the incoming data packet from the CPU module 604 enters the switching engine module 603; the switching engine module 603 performs an operation of looking up the address table 606 on the incoming packet, thereby obtaining the direction information of the packet; if the packet entering the switching engine module 603 is from the downstream network interface to the upstream network interface, the packet is stored in the queue of the corresponding packet buffer 607 in association with the stream-id; if the queue of the packet buffer 607 is close to full, it is discarded; if the packet entering the switching engine module 603 is not from the downlink network interface to the uplink network interface, the packet is stored in the queue of the corresponding packet buffer 607 according to the packet guiding information; if the queue of the packet buffer 607 is close to full, it is discarded.
The switching engine module 603 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 608 is configured by the CPU module 604 and generates tokens for packet buffer queues going to the upstream network interface from all downstream network interfaces at programmable intervals to control the rate of upstream forwarding.
The CPU module 604 is mainly responsible for protocol processing with the node server, configuration of the address table 606, and configuration of the code rate control module 608.
Ethernet protocol conversion gateway：
As shown in fig. 8, the apparatus mainly includes a network interface module (a downlink network interface module 701, an uplink network interface module 702), a switch engine module 703, a CPU module 704, a packet detection module 705, an address table 706, a packet buffer 707, a rate control module 708, a MAC adding module 709, and a MAC deleting module 710.
Wherein, the data packet coming from the downlink network interface module 701 enters the packet detection module 705; the packet detection module 705 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 710 subtracts MAC DA, MAC SA, length or frame type (2byte), and enters the corresponding receiving buffer, otherwise, discards;
the downlink network interface module 701 detects the sending buffer of the port, and if a packet exists, the downlink network interface module learns 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.
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 transaction management method and the transaction management 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 (10)
1. A video processing method is characterized in that the video processing method is applied to a conference management platform in a video network, the conference management platform is respectively in communication connection with a terminal device and a transcoding server through the video network, and a transcoding virtual terminal is arranged in the transcoding server, and the method comprises the following steps:
receiving a video acquisition instruction sent by the terminal equipment, wherein the video acquisition instruction comprises: video identification;
inquiring corresponding first video data according to the video identification;
under the condition that the video coding format of the first video data is not the target video coding format, sending the first video data to the transcoding server to trigger the transcoding server to convert the first video data into second video data in the target coding format through a built-in transcoding virtual terminal of the transcoding server, wherein the target coding format is the video coding format suitable for the terminal equipment;
and receiving the second video data sent by the transcoding virtual terminal, and forwarding the second video data to the terminal equipment.
2. The method of claim 1, wherein prior to the step of sending the first video data to the transcoding server, further comprising:
sending a video transcoding instruction to the transcoding server, wherein the video transcoding instruction comprises: a target video encoding format;
receiving a video networking number of a transcoding virtual terminal returned by the transcoding server according to the video transcoding instruction, wherein the transcoding virtual terminal is obtained by distributing the transcoding server from a built-in virtual terminal according to the target coding format;
and establishing communication connection with the transcoding virtual terminal according to the video networking number of the transcoding virtual terminal.
3. The method according to claim 1, wherein the step of receiving the video acquisition instruction sent by the terminal device is preceded by the step of:
receiving an access request sent by the terminal equipment, wherein the access request comprises: attribute information of the terminal device;
and determining a target coding format applicable to the terminal equipment according to the attribute information of the terminal equipment.
4. The method according to claim 3, wherein the step of determining and storing the target coding format applicable to the terminal device according to the attribute information of the terminal device comprises:
determining a target coding format and target video configuration parameters used by the terminal equipment according to the attribute information of the terminal equipment;
the step of sending the first video data to the transcoding server to trigger the transcoding server to convert the first video data into second video data in a target encoding format through a built-in transcoding virtual terminal of the transcoding server under the condition that the video encoding format of the first video data is not in the target video encoding format includes:
under the condition that the video coding format of the first video data is not the target video coding format, sending the first video data to the transcoding server to trigger the transcoding server to adjust the first video data through a transcoding virtual terminal arranged in the transcoding server according to the target video configuration parameters, and transcoding the adjusted first video data into second video data in the target coding format;
wherein the target video configuration parameters include: target resolution, frame rate.
5. The method of claim 1, wherein the conference management platform and the terminal device conform to internet protocols, the transcoding server conforms to video networking protocols, the conference management platform and the transcoding server are connected in communication through a protocol conversion server, and the protocol conversion server is used for converting the packaging formats of the data packets of the paths into internet protocols and video networking protocols.
6. The utility model provides a video processing device which characterized in that is applied to the meeting management platform in the video networking, meeting management platform passes through the video networking respectively with terminal equipment, transcoding server communication connection, transcoding server embeds there is the virtual terminal of transcoding, the device includes:
a first receiving module, configured to receive a video acquisition instruction sent by the terminal device, where the video acquisition instruction includes: video identification;
the query module is used for querying corresponding first video data according to the video identification;
the transcoding module is used for sending the first video data to the transcoding server under the condition that the video coding format of the first video data is not the target video coding format, so as to trigger the transcoding server to convert the first video data into second video data of the target coding format through a built-in transcoding virtual terminal of the transcoding server, wherein the target coding format is a video coding format suitable for the terminal equipment;
and the forwarding module is used for receiving the second video data sent by the transcoding virtual terminal and forwarding the second video data to the terminal equipment.
7. The apparatus of claim 6, further comprising:
a sending module, configured to send a video transcoding instruction to the transcoding server, where the video transcoding instruction includes: a target video encoding format;
the second receiving module is used for receiving the video networking number of the transcoding virtual terminal returned by the transcoding server according to the video transcoding instruction, wherein the transcoding virtual terminal is obtained by distributing the transcoding server from a built-in virtual terminal according to the target coding format;
and the connection module is used for establishing communication connection with the transcoding virtual terminal according to the video networking number of the transcoding virtual terminal.
8. The apparatus of claim 6, further comprising:
a third receiving module, configured to receive an access request sent by the terminal device, where the access request includes: attribute information of the terminal device;
and the determining module is used for determining and storing the target coding format applicable to the terminal equipment according to the attribute information of the terminal equipment.
9. The apparatus of claim 8, wherein the determining module comprises:
the determining submodule is used for determining a target coding format and target video configuration parameters used by the terminal equipment according to the attribute information of the terminal equipment;
the transcoding module comprises:
the transcoding sub-module is used for sending the first video data to the transcoding server under the condition that the video coding format of the first video data is not the target video coding format, so as to trigger the transcoding server to adjust the first video data according to the target video configuration parameters through a built-in transcoding virtual terminal of the transcoding server, and transcode the adjusted first video data into second video data in the target coding format;
wherein the target video configuration parameters include: target resolution, frame rate.
10. The apparatus of claim 6, wherein the conference management platform and the terminal device conform to an internet protocol, the transcoding server conforms to an internet protocol, the conference management platform and the transcoding server are communicatively connected through a protocol conversion server, and the protocol conversion server is configured to convert the encapsulation format of the data packets of the path into an internet protocol and an internet protocol.
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