CN111385608A - Video downloading method and device - Google Patents
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- CN111385608A CN111385608A CN202010105315.8A CN202010105315A CN111385608A CN 111385608 A CN111385608 A CN 111385608A CN 202010105315 A CN202010105315 A CN 202010105315A CN 111385608 A CN111385608 A CN 111385608A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/239—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests
- H04N21/2393—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests involving handling client requests
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4334—Recording operations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/437—Interfacing the upstream path of the transmission network, e.g. for transmitting client requests to a VOD server
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The embodiment of the invention provides a video downloading method and a video downloading device, which are applied to a video networking monitoring networking management scheduling system, wherein the method comprises the following steps: sending a downloading request aiming at the video data to the monitoring equipment through a video networking protocol; receiving video data returned by the monitoring equipment according to the downloading request; and storing the video data. The embodiment of the invention can store the video data in the tangula, does not need to perform related request operation every time, is simple and can realize downloading of the video file corresponding to the video data.
Description
Technical Field
The invention relates to the technical field of video networking, in particular to a video downloading method and device.
Background
Due to the fact that the video networking technology can achieve real-time transmission of full-network high-definition audio and video, under the background, a plurality of creative applications are derived, and video downloading is one of the creative applications derived under the video networking technology.
At present, because the video files are stored in different positions, relevant request operation is required each time, the downloading of the video downloading files cannot be realized due to the fact that the video files are complex.
Disclosure of Invention
In view of the above problems, embodiments of the present invention are proposed to provide a video recording downloading method and apparatus that overcome or at least partially solve the above problems.
In order to solve the above problem, an embodiment of the present invention provides a video downloading method, which is applied to a monitoring, networking, managing and scheduling system of a video network, and the method includes:
sending a downloading request aiming at the video data to the monitoring equipment through a video networking protocol;
receiving video data returned by the monitoring equipment according to the downloading request;
and storing the video data.
Optionally, the sending a request for downloading video data to a monitoring device through a video networking protocol includes:
and sending the downloading request to a cooperative conversion server through a video networking protocol, and sending the downloading request to the monitoring equipment through the cooperative conversion server.
Optionally, the sending the download request to a cooperative server through a video networking protocol, and sending the download request to the monitoring device through the cooperative server includes:
and sending the downloading request to a cooperative conversion server through a video networking protocol, converting the video downloading request into a target downloading request following a protocol corresponding to the monitoring equipment through the cooperative conversion server, and then sending the target downloading request to the monitoring equipment.
Optionally, the receiving the video data returned by the monitoring device according to the download request includes:
and acquiring the video data returned by the monitoring equipment received by the cooperative conversion server.
Optionally, the saving the video data includes:
and analyzing the video data, and storing the analyzed video data.
In order to solve the above problem, an embodiment of the present invention provides a video downloading device, which is applied to a video networking monitoring, networking, managing and scheduling system, and the device includes:
the sending module is used for sending a downloading request aiming at the video data to the monitoring equipment through a video networking protocol;
a receiving module, configured to receive video data returned by the monitoring device according to the download request;
and the storage module is used for storing the video data.
Optionally, the issuing module includes:
and the sending submodule is used for sending the downloading request to a cooperative conversion server through a video networking protocol and sending the downloading request to the monitoring equipment through the cooperative conversion server.
Optionally, the sending sub-module includes:
and the sending unit is used for sending the downloading request to a cooperative conversion server through a video networking protocol, converting the video downloading request into a target downloading request following a protocol corresponding to the monitoring equipment through the cooperative conversion server, and then sending the target downloading request to the monitoring equipment.
In order to solve the above problem, an embodiment of the present invention provides an electronic device, including:
one or more processors; and
one or more machine-readable media having instructions stored thereon that, when executed by the one or more processors, cause the apparatus to perform the video recording download method described above.
In order to solve the above problem, an embodiment of the present invention provides a computer-readable storage medium storing a computer program that causes a processor to execute the above video download method.
The embodiment of the invention has the following advantages:
in the embodiment of the invention, the tangula can send a download request aiming at the video data to the monitoring equipment through the video networking protocol, receive the video data returned by the monitoring equipment according to the download request, then store the video data, and realize the download of the video data, so that the video data are all stored in the tangula, the relevant request operation is not needed each time, the downloading is simple, and the downloading of the video file corresponding to the video data can be realized.
Drawings
Fig. 1 is a flowchart illustrating steps of a video downloading method according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating steps of a video downloading method according to a second embodiment of the present invention;
fig. 3 is a block diagram illustrating a video downloading apparatus according to a third embodiment of the present invention;
FIG. 4 illustrates a networking diagram of a video network of the present invention;
FIG. 5 is a schematic diagram of a hardware architecture of a node server according to the present invention;
fig. 6 shows a hardware architecture diagram of an access switch of the present invention;
fig. 7 is a schematic diagram illustrating a hardware structure of an ethernet protocol conversion gateway according to the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, a flowchart illustrating steps of a video downloading method according to an embodiment of the present invention is shown, where the method may be applied to a video networking monitoring, networking, managing and scheduling system, and specifically may include the following steps:
In the embodiment of the invention, a video networking monitoring and networking management and scheduling system is called tangula for short, and the tangula sends a downloading request aiming at video data to a video networking monitoring service system (a coordination server) through a video networking protocol, and the downloading request can be used for requesting a monitoring device to download corresponding video data. After receiving the download request, the collaboration server may send the download request to the monitoring device via an internet protocol.
After receiving a download request for the video data sent by tangula, the monitoring device can locally download the corresponding video data from the monitoring device according to the download request, and then forward the video data to the coordination server through an internet protocol.
After receiving the video data, the collaboration server may forward the video data to tangula through a video networking protocol, that is, tangula receives the video data returned by the monitoring device according to the download request.
After receiving the video data returned by the monitoring device according to the download request, step 503 is performed.
Optionally, after receiving the video data returned by the monitoring device according to the download request, the tangula may perform related operations such as local storage and management on the video data, analyze the video data, store the analyzed video data, and implement downloading of the video data, so that the video data is stored in the tangula, and the related request operations need not to be performed each time, which is relatively simple and can implement downloading of the video file corresponding to the video data.
In the embodiment of the invention, the tangula can send a download request aiming at the video data to the monitoring equipment through the video networking protocol, receive the video data returned by the monitoring equipment according to the download request, then store the video data, and realize the download of the video data, so that the video data are all stored in the tangula, the relevant request operation is not needed each time, the downloading is simple, and the downloading of the video file corresponding to the video data can be realized.
Referring to fig. 2, a flowchart illustrating steps of a video downloading method according to a second embodiment of the present invention is shown, where the method may be applied to a video networking monitoring and networking management scheduling system, and specifically may include the following steps:
In the embodiment of the present invention, tangula sends a download request for video data to a video networking monitoring service system (a coordination server) through a video networking protocol, and sends a download request to the coordination server through the video networking protocol, where the download request may be used to request a monitoring device to download corresponding video data. After receiving the download request, the collaboration server may send the download request to the monitoring device via an internet protocol.
The protocol corresponding to the monitoring device may be an internet protocol, or may be a GB/T28181 protocol.
After receiving the download request, the monitoring device determines whether the video is legal or not according to a video download request signaling specified in GB/T28181, and if the download request is legal, the monitoring device requests the video to be successful.
After sending the download request to the corotation server through the video networking protocol and sending the download request to the monitoring device through the corotation server, step 602 is performed.
After receiving a download request for the video data sent by tangula, the monitoring device can locally download the corresponding video data from the monitoring device according to the download request, and then forward the video data to the coordination server through an internet protocol.
After receiving the video data, the collaboration server may forward the video data to tangula through a video networking protocol, that is, tangula receives the video data returned by the monitoring device according to the download request.
After the video recording data returned by the monitoring device received by the collaboration server is obtained, step 603 is executed.
Optionally, after receiving the video data returned by the monitoring device according to the download request, the tangula may perform related operations such as local storage and management on the video data, analyze the video data, store the analyzed video data, and implement downloading of the video data, so that the video data is stored in the tangula, and the related request operations need not to be performed each time, which is relatively simple and can implement downloading of the video file corresponding to the video data.
In the embodiment of the invention, the tangula can send the download request to the cooperative conversion server through the video networking protocol, and send the download request to the monitoring equipment through the cooperative conversion server, so as to obtain the video data returned by the monitoring equipment received by the cooperative conversion server, analyze the video data, and store the analyzed video data, thereby realizing the download of the video data, so that the video data are all stored in the tangula, and the related request operation is not required each time, therefore, the downloading is simple, and the downloading of the video file corresponding to the video data can be realized.
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. 3, a block diagram of a video downloading device according to a third embodiment of the present invention is shown, where the video downloading device 700 may be applied to a monitoring networking management scheduling system of a video network, and the device specifically includes:
a sending module 701, configured to send a download request for video data to a monitoring device through a video networking protocol;
a receiving module 702, configured to receive video data returned by the monitoring device according to the download request;
the saving module 703 is configured to save the video data.
Optionally, the issuing module comprises:
and the sending submodule is used for sending a downloading request to the cooperative conversion server through the video networking protocol and sending the downloading request to the monitoring equipment through the cooperative conversion server.
Optionally, the sending submodule includes:
and the sending unit is used for sending the downloading request to the cooperative conversion server through the video networking protocol, converting the video downloading request into a target downloading request following a protocol corresponding to the monitoring equipment through the cooperative conversion server, and then sending the target downloading request to the monitoring equipment.
Optionally, the receiving module includes:
and the acquisition submodule is used for acquiring the video data returned by the monitoring equipment received by the cooperative conversion server.
Optionally, the saving module comprises:
and the analysis submodule is used for analyzing the video data and storing the analyzed video data.
In the embodiment of the invention, the tangula can send a downloading request for the video data to the monitoring equipment through the sending module, the receiving module is used for receiving the video data returned by the monitoring equipment according to the downloading request, and the storing module is used for storing the video data to realize downloading of the video data, so that the video data are stored in the tangula, the relevant requesting operation is not required to be carried out each time, the downloading is simple, and the downloading of the video file corresponding to the video data can be realized.
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 further provides an electronic device, including:
one or more processors; and
one or more machine-readable media having instructions stored thereon that, when executed by the one or more processors, cause the apparatus to perform a video download method as described above.
The embodiment of the invention also provides a computer readable storage medium, and the stored computer program enables a processor to execute the video downloading method.
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. 4, 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. 5, 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. 6, the network interface module (downlink network interface module 301, uplink network interface module 302), switching engine module 303 and CPU module 304 are mainly included;
wherein, the packet (uplink data) coming from the downlink network interface module 301 enters the packet detection module 305; the packet detection module 305 detects whether the Destination Address (DA), the Source Address (SA), the packet type, and the packet length of the packet meet the requirements, and if so, allocates a corresponding stream identifier (stream-id) and enters the switching engine module 303, otherwise, discards the stream identifier; the packet (downstream data) coming from the upstream network interface module 302 enters the switching engine module 303; the incoming data packet of the CPU module 304 enters the switching engine module 303; the switching engine module 303 performs an operation of looking up the address table 306 on the incoming packet, thereby obtaining the direction information of the packet; if the packet entering the switching engine module 303 is from the downstream network interface to the upstream network interface, the packet is stored in the queue of the corresponding packet buffer 307 in association with the stream-id; if the queue of the packet buffer 307 is nearly full, it is discarded; if the packet entering the switching engine module 303 is not from the downlink network interface to the uplink network interface, the data packet is stored in the queue of the corresponding packet buffer 307 according to the guiding information of the packet; if the queue of the packet buffer 307 is nearly full, it is discarded.
The switching engine module 303 polls all packet buffer queues, 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. 7, the apparatus mainly includes a network interface module (a downlink network interface module 401 and an uplink network interface module 402), a switching engine module 403, a CPU module 404, a packet detection module 405, a rate control module 408, an address table 406, a packet buffer 407, a MAC adding module 409, and a MAC deleting module 410.
Wherein, the data packet coming from the downlink network interface module 401 enters the packet detection module 405; the packet detection module 405 detects whether the ethernet MAC DA, the ethernet MAC SA, the ethernet length or frame type, the video network destination address DA, the video network source address SA, the video network packet type, and the packet length of the packet meet the requirements, and if so, allocates a corresponding stream identifier (stream-id); then, the MAC deletion module 410 subtracts MAC DA, MAC SA, length or frame type (2byte) and enters the corresponding receiving buffer, otherwise, discards it;
the downlink network interface module 401 detects the sending buffer of the port, and if there is a packet, obtains the ethernet MAC DA of the corresponding terminal according to the destination address DA of the packet, adds the ethernet MAC DA of the terminal, the MACSA of the ethernet coordination gateway, and the ethernet length or frame type, and sends the packet.
The other modules in the ethernet protocol gateway function similarly to the access switch.
A terminal:
the system mainly comprises a network interface module, a service processing module and a CPU module; for example, the set-top box mainly comprises a network interface module, a video and audio coding and decoding engine module and a CPU module; the coding board mainly comprises a network interface module, a video and audio coding engine module and a CPU module; the memory mainly comprises a network interface module, a CPU module and a disk array module.
1.3 devices of the metropolitan area network part can be mainly classified into 2 types: node server, node exchanger, metropolitan area server. The node switch mainly comprises a network interface module, a switching engine module and a CPU module; the metropolitan area server mainly comprises a network interface module, a switching engine module and a CPU module.
2. Video networking packet definition
2.1 Access network packet definition
The data packet of the access network mainly comprises the following parts: destination Address (DA), Source Address (SA), reserved bytes, payload (pdu), CRC.
As shown in the following table, the data packet of the access network mainly includes the following parts:
| DA | SA | Reserved | Payload | CRC |
wherein:
the Destination Address (DA) is composed of 8 bytes (byte), the first byte represents the type of the data packet (such as various protocol packets, multicast data packets, unicast data packets, etc.), there are 256 possibilities at most, the second byte to the sixth byte are metropolitan area network addresses, and the seventh byte and the eighth byte are access network addresses;
the Source Address (SA) is also composed of 8 bytes (byte), defined as the same as the Destination Address (DA);
the reserved byte consists of 2 bytes;
the payload part has different lengths according to different types of datagrams, and is 64 bytes if the datagram is various types of protocol packets, and is 32+1024 or 1056 bytes if the datagram is a unicast packet, of course, the length is not limited to the above 2 types;
the CRC consists of 4 bytes and is calculated in accordance with the standard ethernet CRC algorithm.
2.2 metropolitan area network packet definition
The topology of a metropolitan area network is a graph and there may be 2, or even more than 2, connections between two devices, i.e., there may be more than 2 connections between a node switch and a node server, a node switch and a node switch, and a node switch and a node server. However, the metro network address of the metro network device is unique, and in order to accurately describe the connection relationship between the metro network devices, parameters are introduced in the embodiment of the present 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.
Based on the characteristics of the video networking, one of the core concepts of the embodiments of the present invention is provided, the tangula may send a download request for the video data to the monitoring device through the video networking protocol, receive the video data returned by the monitoring device according to the download request, and then store the video data, so as to realize the download of the video data, so that the video data is stored in the tangula, and the related request operation is not required each time, which is relatively simple, and the download of the video file corresponding to the video data can be realized.
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 downloading the video provided by the invention are described in detail, a specific example is applied in the text to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A video downloading method is applied to a video network monitoring and networking management scheduling system, and comprises the following steps:
sending a downloading request aiming at the video data to the monitoring equipment through a video networking protocol;
receiving video data returned by the monitoring equipment according to the downloading request;
and storing the video data.
2. The method of claim 1, wherein issuing a download request for the video data to a monitoring device via a video networking protocol comprises:
and sending the downloading request to a cooperative conversion server through a video networking protocol, and sending the downloading request to the monitoring equipment through the cooperative conversion server.
3. The method of claim 2, wherein sending the download request to a corotation server via an internet of view protocol and sending the download request to the monitoring device via the corotation server comprises:
and sending the downloading request to a cooperative conversion server through a video networking protocol, converting the video downloading request into a target downloading request following a protocol corresponding to the monitoring equipment through the cooperative conversion server, and then sending the target downloading request to the monitoring equipment.
4. The method of claim 1, wherein said receiving the video data returned by the monitoring device in response to the download request comprises:
and acquiring the video data returned by the monitoring equipment received by the cooperative conversion server.
5. The method of claim 1, wherein said storing said video footage data comprises:
and analyzing the video data, and storing the analyzed video data.
6. A video downloading device is applied to a video network monitoring and networking management scheduling system, and comprises:
the sending module is used for sending a downloading request aiming at the video data to the monitoring equipment through a video networking protocol;
a receiving module, configured to receive video data returned by the monitoring device according to the download request;
and the storage module is used for storing the video data.
7. The apparatus of claim 6, wherein the issuing module comprises:
and the sending submodule is used for sending the downloading request to a cooperative conversion server through a video networking protocol and sending the downloading request to the monitoring equipment through the cooperative conversion server.
8. The apparatus of claim 7, wherein the transmit submodule comprises:
and the sending unit is used for sending the downloading request to a cooperative conversion server through a video networking protocol, converting the video downloading request into a target downloading request following a protocol corresponding to the monitoring equipment through the cooperative conversion server, and then sending the target downloading request to the monitoring equipment.
9. An electronic device, comprising:
one or more processors; and
one or more machine-readable media having instructions stored thereon that, when executed by the one or more processors, cause the apparatus to perform the video recording download method of any of claims 1 to 5.
10. A computer-readable storage medium storing a computer program for causing a processor to execute the video download method according to any one of claims 1 to 5.
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| CN202010105315.8A CN111385608A (en) | 2020-02-20 | 2020-02-20 | Video downloading method and device |
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