CN110620936B - Video network video backup method and device, electronic equipment and storage medium - Google Patents
Video network video backup method and device, electronic equipment and storage medium Download PDFInfo
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- CN110620936B CN110620936B CN201910804057.XA CN201910804057A CN110620936B CN 110620936 B CN110620936 B CN 110620936B CN 201910804057 A CN201910804057 A CN 201910804057A CN 110620936 B CN110620936 B CN 110620936B
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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
- H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
- H04N21/23113—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion involving housekeeping operations for stored content, e.g. prioritizing content for deletion because of storage space restrictions
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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
- 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
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/26613—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing keys in general
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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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/64—Addressing
- H04N21/6405—Multicasting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
- H04N7/147—Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
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Abstract
The application provides a video backup method and device for a video network. Through the application, in the process of carrying out video networking video service among a plurality of video networking terminals, video networking videos received by a target video networking terminal and sent by other video networking terminals can be backed up in a video networking storage gateway, then the video networking videos can be checked by a user again, and channel keys of video channels for transmitting the video networking videos need to be checked in the backup process, so that the safety of the video networking videos can be improved.
Description
Technical Field
The invention relates to the technical field of data processing, in particular to a video network video backup method and device.
Background
At present, a plurality of companies are provided with office places in each region, service communication is often required between the office places, and when the service communication is carried out, a cluster video conference is often required to be started.
The number of employees in each office is often large, each employee in each office is provided with a conference device, and all employees in all offices can use respective conference devices to start the cluster video conference.
Disclosure of Invention
The application discloses a video network video backup method and device.
In a first aspect, the present application shows a video backup method for a video network, where the method is applied to a video network storage gateway, and the method includes:
receiving a video backup request; the video backup request is sent to the video networking storage gateway by a target video networking terminal through the video networking server in the process of carrying out video networking video service among a plurality of video networking terminals, the video backup request is used for backing up video networking video received by the target video networking terminal in the process of carrying out the video networking video service, the video backup request carries a channel number of a video channel of the target video networking terminal, which is used for receiving the video networking video, and the target video networking terminal is at least one of the plurality of video networking terminals;
sending a key acquisition request to the target video networking terminal through the video networking server, wherein the key acquisition request carries the channel number, and the key acquisition request is used for acquiring the channel key of the video channel according to the channel number;
receiving a channel key of the video channel, returned by the target video network terminal through the video network server according to the channel number;
sending a multicast address acquisition request to the video network server, wherein the multicast address acquisition request carries the channel number and the channel key, and the multicast address acquisition request is used for acquiring the multicast address of the video channel according to the channel number and the channel key so that the video network server verifies whether the channel key is legal or not according to the channel number, and then sends the multicast address of the video channel to the video network storage gateway under the condition that the channel key is legal;
receiving a multicast address of the video channel returned by the video network server after the channel key is verified to be legal according to the channel number;
acquiring the video of the video network from the video network server according to the multicast address;
storing the video over the video network.
In an optional implementation manner, before storing the video networking video, the method further includes:
and compressing the video of the video network, or compressing and encrypting the video.
In an optional implementation, the method further includes:
receiving a video acquisition request for acquiring the video of the video network, wherein the video acquisition request is sent by the target video network terminal to the video network storage gateway through the video network server;
acquiring the stored video of the video network;
and sending the video networking video to the target video networking terminal through the video networking server.
In an optional implementation manner, after storing the video networking video, the method further includes:
determining whether the storage duration of the video network is greater than a preset duration;
and if the storage duration of the video networking video is longer than the preset duration, deleting the video networking video.
In an optional implementation manner, after storing the video networking video, the method further includes:
determining whether the duration of the video network which is not accessed is greater than a preset duration;
and if the duration of the video networking video which is not accessed is longer than the preset duration, deleting the video networking video.
In an alternative implementation, the storing the video networking video includes:
determining a storage space allocated to the target video network terminal in a plurality of storage spaces in the video network storage gateway;
and storing the video of the video network in the determined storage space.
In an optional implementation manner, the video backup request also carries a terminal number of the target video networking terminal;
the determining of the storage space allocated to the target video network terminal in the plurality of storage spaces in the video network storage gateway includes:
searching a space address corresponding to the terminal number of the target video networking terminal in the corresponding relation between the terminal number of the video networking terminal and the space address of the storage space allocated for the video networking terminal;
and determining a storage space corresponding to the space address in the plurality of storage spaces.
In an alternative implementation, the video networking video service includes at least video networking video telephone and video networking cluster video conference.
In a second aspect, the present application shows an apparatus for video backup, which is applied to a video storage gateway, and includes:
the first receiving module is used for receiving a video backup request; the video backup request is sent to the video networking storage gateway by a target video networking terminal through the video networking server in the process of carrying out video networking video service among a plurality of video networking terminals, the video backup request is used for backing up video networking video received by the target video networking terminal in the process of carrying out the video networking video service, the video backup request carries a channel number of a video channel of the target video networking terminal, which is used for receiving the video networking video, and the target video networking terminal is at least one of the plurality of video networking terminals;
a first sending module, configured to send a key acquisition request to the target video networking terminal via the video networking server, where the key acquisition request carries the channel number, and the key acquisition request is used to acquire a channel key of the video channel according to the channel number;
the second receiving module is used for receiving a channel key of the video channel, returned by the target video network terminal through the video network server according to the channel number;
a second sending module, configured to send a multicast address acquisition request to the video networking server, where the multicast address acquisition request carries the channel number and the channel key, and the multicast address acquisition request is used to acquire a multicast address of the video channel according to the channel number and the channel key, so that the video networking server checks whether the channel key is legal according to the channel number, and sends the multicast address of the video channel to the video networking storage gateway when the channel key is legal;
a third receiving module, configured to receive a multicast address of the video channel, which is returned by the video networking server after verifying that the channel key is legal according to the channel number;
the first acquisition module is used for acquiring the video of the video network from the video network server according to the multicast address;
and the storage module is used for storing the video of the video network.
In an optional implementation, the apparatus further comprises:
and the processing module is used for compressing the video networking video or compressing and encrypting the video networking video.
In an optional implementation, the apparatus further comprises:
a fourth receiving module, configured to receive a video acquisition request for acquiring the video of the video networking, where the video acquisition request is sent by the target video networking terminal to the video networking storage gateway via the video networking server;
the second acquisition module is used for acquiring the stored video of the video network;
and the third sending module is used for sending the video networking video to the target video networking terminal through the video networking server.
In an optional implementation, the apparatus further comprises:
the first determining module is used for determining whether the storage duration of the video networking video is greater than a preset duration;
and the first deleting module is used for deleting the video of the video network if the storage duration of the video network is longer than the preset duration.
In an optional implementation, the apparatus further comprises:
the second determining module is used for determining whether the duration of the video network video which is not accessed is longer than the preset duration;
and the second deleting module is used for deleting the video of the video network if the duration of the video network video which is not accessed is longer than the preset duration.
In an alternative implementation, the storage module includes:
the determining unit is used for determining a storage space allocated to the target video network terminal in a plurality of storage spaces in the video network storage gateway;
and the storage unit is used for storing the video of the video network in the determined storage space.
In an optional implementation manner, the video backup request also carries a terminal number of the target video networking terminal;
the determination unit includes:
the searching subunit is used for searching a space address corresponding to the terminal number of the target video networking terminal in the corresponding relation between the terminal number of the video networking terminal and the space address of the storage space allocated to the video networking terminal;
and the determining subunit is used for determining the storage space corresponding to the space address in the plurality of storage spaces.
In an alternative implementation, the video networking video service includes at least video networking video telephone and video networking cluster video conference.
In a third aspect, the present application shows an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method for video backup of video networking video according to the first aspect when executing the computer program.
In a fourth aspect, the present application shows a computer readable storage medium having stored thereon a computer program for causing a processor to execute the method for video backup of video networking video according to the first aspect.
The application includes the following advantages:
through the application, in the process of carrying out video networking video service among a plurality of video networking terminals, video networking videos received by a target video networking terminal and sent by other video networking terminals can be backed up in a video networking storage gateway, then the video networking videos can be checked by a user again, and channel keys of video channels for transmitting the video networking videos need to be checked in the backup process, so that the safety of the video networking videos can be improved.
Drawings
FIG. 1 is a networking schematic of a video network of the present invention.
Fig. 2 is a schematic diagram of a hardware structure of a node server according to the present invention.
Fig. 3 is a schematic diagram of a hardware structure of an access switch of the present invention.
Fig. 4 is a schematic diagram of a hardware structure of an ethernet protocol conversion gateway according to the present invention.
Fig. 5 is a block diagram of a video network video backup system according to the present application.
Fig. 6 is a flowchart illustrating steps of a video backup method according to the present application.
Fig. 7 is a block diagram of a video backup apparatus according to the present application.
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.
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 the traditional Ethernet (Ethernet) to face the potentially huge first video traffic on the network. Unlike pure network Packet Switching (Packet Switching) or network Circuit Switching (Circuit Switching), the Packet Switching is adopted by the technology of the video networking to meet the Streaming requirement. The video networking technology has the advantages of flexibility, simplicity and low price of packet switching, and simultaneously has the quality and safety guarantee of circuit switching, thereby realizing the seamless connection of the whole network switching type virtual circuit and the data format.
Switching Technology (Switching Technology)
The video network adopts two advantages of asynchronism and packet switching of the Ethernet, eliminates the defects of the Ethernet on the premise of full compatibility, has end-to-end seamless connection of the whole network, is directly communicated with a user terminal, and directly bears an IP data packet. The user data does not require any format conversion across the entire network. The video networking is a higher-level form of the Ethernet, is a real-time exchange platform, can realize the real-time transmission of the whole-network large-scale high-definition video which cannot be realized by the existing Internet, and pushes a plurality of network video applications to high-definition and unification.
Server Technology (Server Technology)
The server technology on the video networking and unified video platform is different from the traditional server, the streaming media transmission of the video networking and unified video platform is established on the basis of connection orientation, the data processing capacity of the video networking and unified video platform is independent of flow and communication time, and a single network layer can contain signaling and data transmission. For voice and video services, the complexity of video networking and unified video platform streaming media processing is much simpler than that of data processing, and the efficiency is greatly improved by more than one hundred times compared with that of a traditional server.
Storage Technology (Storage Technology)
The super-high speed storage technology of the unified video platform adopts the most advanced real-time operating system in order to adapt to the media content with super-large capacity and super-large flow, the program information in the server instruction is mapped to the specific hard disk space, the media content is not passed through the server any more, and is directly sent to the user terminal instantly, and the general waiting time of the user is less than 0.2 second. The optimized sector distribution greatly reduces the mechanical motion of the magnetic head track seeking of the hard disk, the resource consumption only accounts for 20% of that of the IP internet of the same grade, but concurrent flow which is 3 times larger than that of the traditional hard disk array is generated, and the comprehensive efficiency is improved by more than 10 times.
Network Security Technology (Network Security Technology)
The structural design of the video network completely eliminates the network security problem troubling the internet structurally by the modes of independent service permission control each time, complete isolation of equipment and user data and the like, generally does not need antivirus programs and firewalls, avoids the attack of hackers and viruses, and provides a structural carefree security network for users.
Service Innovation Technology (Service Innovation Technology)
The unified video platform integrates services and transmission, and is not only automatically connected once whether a single user, a private network user or a network aggregate. The user terminal, the set-top box or the PC are directly connected to the unified video platform to obtain various multimedia video services in various forms. The unified video platform adopts a menu type configuration table mode to replace the traditional complex application programming, can realize complex application by using very few codes, and realizes infinite new service innovation.
Networking of the video network is as follows:
the video network is a centralized control network structure, and the network can be a tree network, a star network, a ring network and the like, but on the basis of the centralized control node, the whole network is controlled by the centralized control node in the network.
As shown in fig. 1, the video network is divided into an access network and a metropolitan network.
The devices of the access network part can be mainly classified into 3 types: node server, access switch, terminal (including various set-top boxes, coding boards, memories, etc.). The node server is connected to an access switch, which may be connected to a plurality of terminals and may be connected to an ethernet network.
The node server is a node which plays a centralized control function in the access network and can control the access switch and the terminal. The node server can be directly connected with the access switch or directly connected with the terminal.
Similarly, devices of the metropolitan network portion may also be classified into 3 types: a metropolitan area server, a node switch and a node server. The metro server is connected to a node switch, which may be connected to a plurality of node servers.
The node server is a node server of the access network part, namely the node server belongs to both the access network part and the metropolitan area network part.
The metropolitan area server is a node which plays a centralized control function in the metropolitan area network and can control a node switch and a node server. The metropolitan area server can be directly connected with the node switch or directly connected with the node server.
Therefore, the whole video network is a network structure with layered centralized control, and the network controlled by the node server and the metropolitan area server can be in various structures such as tree, star and ring.
The access network part can form a unified video platform (the part in the dotted circle), and a plurality of unified video platforms can form a video network; each unified video platform may be interconnected via metropolitan area and wide area video networking.
Video networking device classification
1.1 devices in the video network of the embodiment of the present invention can be mainly classified into 3 types: server, exchanger (including Ethernet protocol conversion gateway), terminal (including various set-top boxes, code board, memory, etc.). The video network as a whole can be divided into a metropolitan area network (or national network, global network, etc.) and an access network.
1.2 wherein the devices of the access network part can be mainly classified into 3 types: node server, access exchanger (including Ethernet protocol conversion gateway), terminal (including various set-top boxes, coding board, memory, etc.).
The specific hardware structure of each access network device is as follows:
a node server:
as shown in fig. 2, the system mainly includes a network interface module 201, a switching engine module 202, a CPU module 203, and a disk array module 204;
the network interface module 201, the CPU module 203, and the disk array module 204 all enter the switching engine module 202; the switching engine module 202 performs an operation of looking up the address table 205 on the incoming packet, thereby obtaining the direction information of the packet; and stores the packet in a queue of the corresponding packet buffer 206 based on the packet's steering information; if the queue of the packet buffer 206 is nearly full, it is discarded; the switching engine module 202 polls all packet buffer queues for forwarding if the following conditions are met: 1) the port send buffer is not full; 2) the queue packet counter is greater than zero. The disk array module 204 mainly implements control over the hard disk, including initialization, read-write, and other operations on the hard disk; the CPU module 203 is mainly responsible for protocol processing with an access switch and a terminal (not shown in the figure), configuring an address table 205 (including a downlink protocol packet address table, an uplink protocol packet address table, and a data packet address table), and configuring the disk array module 204.
The access switch:
as shown in fig. 3, the network interface module mainly includes a network interface module (a downlink network interface module 301 and an uplink network interface module 302), a switching engine module 303 and a CPU module 304;
wherein, the packet (uplink data) coming from the downlink network interface module 301 enters the packet detection module 305; the packet detection module 305 detects whether the Destination Address (DA), the Source Address (SA), the packet type, and the packet length of the packet meet the requirements, and if so, allocates a corresponding stream identifier (stream-id) and enters the switching engine module 303, otherwise, discards the stream identifier; the packet (downstream data) coming from the upstream network interface module 302 enters the switching engine module 303; the incoming data packet of the CPU module 304 enters the switching engine module 303; the switching engine module 303 performs an operation of looking up the address table 306 on the incoming packet, thereby obtaining the direction information of the packet; if the packet entering the switching engine module 303 is from the downstream network interface to the upstream network interface, the packet is stored in the queue of the corresponding packet buffer 307 in association with the stream-id; if the queue of the packet buffer 307 is nearly full, it is discarded; if the packet entering the switching engine module 303 is not from the downlink network interface to the uplink network interface, the data packet is stored in the queue of the corresponding packet buffer 307 according to the guiding information of the packet; if the queue of the packet buffer 307 is nearly full, it is discarded.
The switching engine module 303 polls all packet buffer queues and may include two cases:
if the queue is from the downlink network interface to the uplink network interface, the following conditions are met for forwarding: 1) the port send buffer is not full; 2) the queued packet counter is greater than zero; 3) obtaining a token generated by a code rate control module;
if the queue is not from the downlink network interface to the uplink network interface, the following conditions are met for forwarding: 1) the port send buffer is not full; 2) the queue packet counter is greater than zero.
The rate control module 308 is configured by the CPU module 304, and generates tokens for packet buffer queues from all downstream network interfaces to upstream network interfaces at programmable intervals to control the rate of upstream forwarding.
The CPU module 304 is mainly responsible for protocol processing with the node server, configuration of the address table 306, and configuration of the code rate control module 308.
Ethernet protocol conversion gateway：
As shown in fig. 4, the apparatus mainly includes a network interface module (a downlink network interface module 401 and an uplink network interface module 402), a switching engine module 403, a CPU module 404, a packet detection module 405, a rate control module 408, an address table 406, a packet buffer 407, a MAC adding module 409, and a MAC deleting module 410.
Wherein, the data packet coming from the downlink network interface module 401 enters the packet detection module 405; the packet detection module 405 detects whether the ethernet MAC DA, the ethernet MAC SA, the ethernet length or frame type, the video network destination address DA, the video network source address SA, the video network packet type, and the packet length of the packet meet the requirements, and if so, allocates a corresponding stream identifier (stream-id); then, the MAC deletion module 410 subtracts MAC DA, MAC SA, length or frame type (2byte) and enters the corresponding receiving buffer, otherwise, discards it;
the downlink network interface module 401 detects the sending buffer of the port, and if there is a packet, obtains the ethernet MAC DA of the corresponding terminal according to the destination address DA of the packet, adds the ethernet MAC DA of the terminal, the MAC SA of the ethernet protocol gateway, and the ethernet length or frame type, and sends the packet.
The other modules in the ethernet protocol gateway function similarly to the access switch.
A terminal:
the system mainly comprises a network interface module, a service processing module and a CPU module; for example, the set-top box mainly comprises a network interface module, a video and audio coding and decoding engine module and a CPU module; the coding board mainly comprises a network interface module, a video and audio coding engine module and a CPU module; the memory mainly comprises a network interface module, a CPU module and a disk array module.
1.3 devices of the metropolitan area network part can be mainly classified into 2 types: node server, node exchanger, metropolitan area server. The node switch mainly comprises a network interface module, a switching engine module and a CPU module; the metropolitan area server mainly comprises a network interface module, a switching engine module and a CPU module.
2. Video networking packet definition
2.1 Access network packet definition
The data packet of the access network mainly comprises the following parts: destination Address (DA), Source Address (SA), reserved bytes, payload (pdu), CRC.
As shown in the following table, the data packet of the access network mainly includes the following parts:
| DA | SA | Reserved | Payload | CRC |
wherein:
the Destination Address (DA) is composed of 8 bytes (byte), the first byte represents the type of the data packet (such as various protocol packets, multicast data packets, unicast data packets, etc.), there are 256 possibilities at most, the second byte to the sixth byte are metropolitan area network addresses, and the seventh byte and the eighth byte are access network addresses;
the Source Address (SA) is also composed of 8 bytes (byte), defined as the same as the Destination Address (DA);
the reserved byte consists of 2 bytes;
the payload part has different lengths according to different types of datagrams, and is 64 bytes if the datagram is various types of protocol packets, and is 32+1024 or 1056 bytes if the datagram is a unicast packet, of course, the length is not limited to the above 2 types;
the CRC consists of 4 bytes and is calculated in accordance with the standard ethernet CRC algorithm.
2.2 metropolitan area network packet definition
The topology of a metropolitan area network is a graph and there may be 2, or even more than 2, connections between two devices, i.e., there may be more than 2 connections between a node switch and a node server, a node switch and a node switch, and a node switch and a node server. However, the metro network address of the metro network device is unique, and in order to accurately describe the connection relationship between the metro network devices, parameters are introduced in the embodiment of the present invention: a label to uniquely describe a metropolitan area network device.
In this specification, the definition of the Label is similar to that of the Label of MPLS (Multi-Protocol Label Switch), and assuming that there are two connections between the device a and the device B, there are 2 labels for the packet from the device a to the device B, and 2 labels for the packet from the device B to the device a. The label is classified into an incoming label and an outgoing label, and assuming that the label (incoming label) of the packet entering the device a is 0x0000, the label (outgoing label) of the packet leaving the device a may become 0x 0001. The network access process of the metro network is a network access process under centralized control, that is, address allocation and label allocation of the metro network are both dominated by the metro server, and the node switch and the node server are both passively executed, which is different from label allocation of MPLS, and label allocation of MPLS is a result of mutual negotiation between the switch and the server.
As shown in the following table, the data packet of the metro network mainly includes the following parts:
| DA | SA | Reserved | label (R) | Payload | CRC |
Namely Destination Address (DA), Source Address (SA), Reserved byte (Reserved), tag, payload (pdu), CRC. The format of the tag may be defined by reference to the following: the tag is 32 bits with the upper 16 bits reserved and only the lower 16 bits used, and its position is between the reserved bytes and payload of the packet.
Referring to fig. 5, a block diagram of a video network video backup system according to the present application is shown, the system including:
the system comprises a plurality of video network terminals 01, video network servers 02 and video network storage gateways 03, wherein each video network terminal 01 is in communication connection with the video network server 02 based on a video network protocol, and the video network storage gateways 03 are in communication connection with the video network servers 02 based on the video network protocol.
Referring to fig. 6, a flowchart illustrating steps of a video network video backup method according to the present application is shown, where the method may be applied to the video network storage gateway 03 shown in fig. 5, and the method may specifically include the following steps:
in step S101, a video backup request is received; the video backup request is sent to a video networking storage gateway by a video networking server by a target video networking terminal in the process of carrying out video networking video service among a plurality of video networking terminals, the video backup request is used for backing up video networking video received by the target video networking terminal in the process of carrying out the video networking video service, the video backup request carries a channel number of a video channel of the target video networking terminal, which is used for receiving the video networking video, and the target video networking terminal is at least one of the plurality of video networking terminals;
the video networking video service at least comprises video networking video telephones, video networking cluster video conferences and the like.
A video channel for transmitting video of the video network can be established among the video network terminals through the video network server, and then the video of the video network is transmitted through the video channel, so that video service of the video network among the video network terminals is realized.
In the process of carrying out video networking video service among a plurality of video networking terminals, a target video networking terminal can backup received video networking videos sent by other video networking terminals, so that the video networking videos sent to the target video networking terminal by other video networking terminals can be checked again when needed.
For example, assuming that a user using a target video networking terminal needs to backup video networking videos received by the target video networking terminal and sent by other video networking terminals, a video backup request can be remotely sent into the target video networking terminal through a remote controller, and then the target video networking terminal receives the video backup request sent by the remote controller and then sends the video backup request to a video networking storage gateway through a video networking server. The video network storage gateway receives the video backup request and then executes step S102.
In step S102, a key acquisition request is sent to a target video network terminal via a video network server, where the key acquisition request carries the channel number, and the key acquisition request is used to acquire a channel key of the video channel according to the channel number;
in this application, after receiving the video backup request, the storage gateway in the video network may send a key acquisition request to the target terminal in the video network via the video network server according to the terminal number, where the key acquisition request carries the channel number, and the key acquisition request is used to acquire the channel key of the video channel according to the channel number.
However, in order to improve the security of the video network, it is necessary to set the authority for video backup of the video network, where the authority for backup may be set by setting a channel key of a video channel, for example, different channel keys may be set for different video channels, when a certain device needs to backup the video of the video network transmitted on a certain video channel, it is necessary to first obtain the channel key of the video channel, and then backup the video of the video network according to the channel key, and the video of the video network transmitted on the video channel cannot be backed up without the channel key.
Therefore, after receiving the video backup request, the video network storage gateway may obtain the channel key of the video channel through the target video network terminal, for example, the video network storage gateway forwards the key obtaining request to the target video network terminal via the video network server.
And then the target video network terminal receives the key acquisition request and sends the channel key of the video channel to the video network storage gateway through the video network server according to the key acquisition request.
In step S103, a channel key of the video channel returned by the target video network terminal via the video network server according to the channel number is received;
in step S104, sending a multicast address acquisition request to a video network server, where the multicast address acquisition request carries the channel number and the channel key, and the multicast address acquisition request is used to acquire a multicast address of a video channel according to the channel number and the channel key, so that the video network server checks whether the channel key is legal according to the channel number, and sends the multicast address of the video channel to a video network storage gateway when the channel key is legal;
in the application, in the process of carrying out video networking video service among a plurality of video networking terminals, video networking videos sent to other video networking terminals by any one video networking terminal need to be forwarded through the video networking server, so that the video networking server can obtain the video networking videos sent to other video networking terminals by any one video networking terminal, and thus, the video networking storage gateway can obtain the video networking videos received by a target video networking terminal from the video networking server and back up the videos.
In the application, the video network server may issue the video network video to the outside in a multicast mode, and therefore, after receiving the channel number, the video network storage gateway may send the multicast address acquisition request to the video network server.
The video network server can receive the multicast address acquisition request, check whether the channel key is legal according to the channel number, and send the multicast address of the video channel to the video network storage gateway under the condition that the channel key is legal. Therefore, any device can be prevented from obtaining the multicast address to backup the video of the video network, and the safety of the video network can be improved.
When the video network server creates a video channel, a channel key can be generated for the video channel, and the channel identifier of the created video channel and the generated channel key form a corresponding table entry and are stored in the corresponding relation between the channel number of the video channel and the channel key of the video channel.
Therefore, when checking whether the channel key is legal or not according to the channel number, the video network server can search the channel key corresponding to the channel number in the corresponding relation between the channel number of the video channel and the channel key of the video channel; determining whether the searched channel key is the same as the channel key carried by the multicast address acquisition request; if the found channel key is the same as the channel key carried by the multicast address acquisition request, determining that the channel key is legal; and if the found channel key is different from the channel key carried by the multicast address acquisition request, determining that the channel key is illegal.
Through the method and the device, the channel key of the video channel for transmitting the video of the video network needs to be checked in the backup process, so that the safety of the video network can be improved.
In step S105, receiving the multicast address of the video channel returned by the video network server after verifying that the channel key is legal according to the channel number;
in the application, the video networking server may search the multicast address corresponding to the channel number in the correspondence between the channel number of the video channel and the multicast address of the video channel, and use the multicast address as the multicast address of the video channel, and then send the multicast address of the video channel to the video networking storage gateway. And then the video network storage gateway receives the multicast address of the video channel.
In step S106, the video network video is acquired from the video network server according to the multicast address;
in step S107, the video network video is stored.
The video network storage gateway can store the video network video in the storage space of the video network storage gateway.
Through the application, in the process of carrying out video networking video service among a plurality of video networking terminals, video networking videos received by a target video networking terminal and sent by other video networking terminals can be backed up in a video networking storage gateway, then the video networking videos can be checked by a user again, and channel keys of video channels for transmitting the video networking videos need to be checked in the backup process, so that the safety of the video networking videos can be improved.
In addition, in another embodiment, a user can remotely control the target video networking terminal through a remote controller to start a process of backing up video networking videos received by the target video networking terminal and sent by other video networking terminals in the video networking storage gateway, and for the user, the remote controller can be remotely operated, so that the operation is convenient and simple, and the user experience is high.
In one embodiment of the present application, before storing the video networking video, the video networking video may be compressed, or compressed and encrypted.
For example, to save the storage space of the storage gateway of the video network, so as to improve the utilization rate of the storage space of the storage gateway of the video network, the storage gateway of the video network may compress the video network, obtain a compressed video, and then store the compressed video. The storage space that the compressed video took up is less than the storage space that this video of this video networking video took up, therefore, compares and directly stores this video of video networking in video networking storage gateway, and the storage space of video networking storage gateway can be saved to storage compressed video in video networking storage gateway.
For another example, to increase the security of the video-over-video, the video-over-video storage gateway may encrypt the video-over-video, obtain an encrypted video, and then store the encrypted video. Therefore, even if a lawbreaker illegally steals the encrypted video from the video networking storage gateway, the lawbreaker cannot restore the video networking video according to the encrypted video because the lawbreaker cannot know the decryption algorithm corresponding to the encryption algorithm used when the video networking video is encrypted, so that the security of the video networking video can be improved.
In another embodiment of the application, when a user needs to view the video of the video network backed up in the video network storage gateway later, the user can control a target video network terminal to send an acquisition request for acquiring the video of the video network to the video network storage gateway through a video network server; the video network storage gateway receives the acquisition request, the video acquisition request is sent to the video network storage gateway by a target video network terminal through a video network server, then the stored video network video can be acquired, and the video network video is sent to the target video network terminal through the video network server; the target video network terminal receives the video network video and then can play the video network video for the user to view.
In the present application, once the video networking video is backed up in the video networking storage gateway, generally, the user frequently views the video networking video in the near future, and if the user does not have the requirement for viewing the video networking video any more, the user does not view the video networking video for a long time, that is, if the user does not view the video networking video backed up in the video networking storage gateway for a while, the user may not need to view the video networking video any more, or the video networking video is useless for the user.
However, the storage space in the video networking storage gateway is often limited, in order to save the storage space in the video networking storage gateway and further improve the utilization rate of the storage space in the video networking storage gateway, the video networking videos stored in the video networking storage gateway can be the video networking videos which can be easily viewed by the user again, and if a certain video networking video is hardly viewed by the user later, the video networking video does not need to be continuously stored in the video networking storage gateway.
Therefore, in another embodiment of the present application, after the video network storage gateway stores the video network video, the video network storage gateway may determine whether the duration that the video network video is not accessed is longer than a preset duration, including 5 days, 10 days, a month, and the like, which is not limited in this application. If the duration of the video network video which is not accessed is longer than the preset duration, the video network video is described to be possibly useless for the user, and therefore, the video network storage gateway can delete the video network video.
In the application, the video networking video is often time-efficient, once the video networking video is backed up in the video networking storage gateway, generally, a user will view the video networking video in the near future, and the video networking video backed up in the video networking storage gateway will not be viewed after a long time, that is, the user may not need to view the video networking video any longer, or the video networking video is useless for the user.
However, the storage space in the video networking storage gateway is often limited, in order to save the storage space in the video networking storage gateway and further improve the utilization rate of the storage space in the video networking storage gateway, the video networking videos stored in the video networking storage gateway can be the video networking videos which can be easily viewed by the user again, and if a certain video networking video is hardly viewed by the user later, the video networking video does not need to be continuously stored in the video networking storage gateway.
Therefore, in another embodiment of the present application, after the video-networking storage gateway stores the video, the video-networking storage gateway may determine whether the storage duration of the video is greater than a preset duration; the preset time period includes 5 days, 10 days, a month, etc., which is not limited in this application. If the storage duration of the video network video is longer than the preset duration, the video network video is possibly useless for the user, and therefore, the video network storage gateway can delete the video network video.
In another embodiment of the application, the video networking storage gateway may partition a plurality of storage spaces in the video networking storage gateway in advance, different storage spaces are affiliated to different video networking terminals, and any one video networking terminal can only access the storage space affiliated to itself but cannot access other storage spaces. Therefore, the data backed up by each video network terminal in the video network storage gateway can be isolated, and the safety of the data backed up by each video network terminal in the video network storage gateway can be ensured.
Therefore, when the video of the video network is stored, the video network storage gateway can determine the storage space allocated to the target video network terminal in a plurality of storage spaces in the video network storage gateway; the video network video is then stored in the determined storage space.
When the video network storage gateway allocates a storage space for a video network terminal, the terminal number of the video network terminal and the space address of the storage space allocated for the video network terminal form a corresponding table entry, and the corresponding table entry is stored in the corresponding relation between the terminal number of the video network terminal and the space address of the storage space allocated for the video network terminal.
And the video backup request also carries the terminal number of the target video network terminal.
Therefore, when the video network storage gateway determines the storage space allocated to the target video network terminal in the plurality of storage spaces in the video network storage gateway, the video network storage gateway can search the space address corresponding to the terminal number of the target video network terminal in the corresponding relation between the terminal number of the video network terminal and the space address of the storage space allocated to the video network terminal; and determining a storage space corresponding to the space address in the plurality of storage spaces.
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. 7, a block diagram of a video network video backup apparatus according to the present application is shown, where the apparatus may specifically include the following modules:
a first receiving module 11, configured to receive a video backup request; the video backup request is sent to the video networking storage gateway by a target video networking terminal through the video networking server in the process of carrying out video networking video service among a plurality of video networking terminals, the video backup request is used for backing up video networking video received by the target video networking terminal in the process of carrying out the video networking video service, the video backup request carries a channel number of a video channel of the target video networking terminal, which is used for receiving the video networking video, and the target video networking terminal is at least one of the plurality of video networking terminals;
a first sending module 12, configured to send a key obtaining request to the target video networking terminal through the video networking server, where the key obtaining request carries the channel number, and the key obtaining request is used to obtain a channel key of the video channel according to the channel number;
a second receiving module 13, configured to receive a channel key of the video channel, where the channel key is returned by the target video network terminal via the video network server according to the channel number;
a second sending module 14, configured to send a multicast address obtaining request to the video networking server, where the multicast address obtaining request carries the channel number and the channel key, and the multicast address obtaining request is used to obtain a multicast address of the video channel according to the channel number and the channel key, so that the video networking server verifies, according to the channel number, whether the channel key is legal, and sends the multicast address of the video channel to the video networking storage gateway when the channel key is legal;
a third receiving module 15, configured to receive a multicast address of the video channel, which is returned by the video networking server after verifying that the channel key is legal according to the channel number;
a first obtaining module 16, configured to obtain the video over internet from the video over internet server according to the multicast address;
and the storage module 17 is used for storing the video networking videos.
In an optional implementation, the apparatus further comprises:
and the processing module is used for compressing the video networking video or compressing and encrypting the video networking video.
In an optional implementation, the apparatus further comprises:
a fourth receiving module, configured to receive a video acquisition request for acquiring the video of the video networking, where the video acquisition request is sent by the target video networking terminal to the video networking storage gateway via the video networking server;
the second acquisition module is used for acquiring the stored video of the video network;
and the third sending module is used for sending the video networking video to the target video networking terminal through the video networking server.
In an optional implementation, the apparatus further comprises:
the first determining module is used for determining whether the storage duration of the video networking video is greater than a preset duration;
and the first deleting module is used for deleting the video of the video network if the storage duration of the video network is longer than the preset duration.
In an optional implementation, the apparatus further comprises:
the second determining module is used for determining whether the duration of the video network video which is not accessed is longer than the preset duration;
and the second deleting module is used for deleting the video of the video network if the duration of the video network video which is not accessed is longer than the preset duration.
In an optional implementation manner, the storage module 17 includes:
the determining unit is used for determining a storage space allocated to the target video network terminal in a plurality of storage spaces in the video network storage gateway;
and the storage unit is used for storing the video of the video network in the determined storage space.
In an optional implementation manner, the video backup request also carries a terminal number of the target video networking terminal;
the determination unit includes:
the searching subunit is used for searching a space address corresponding to the terminal number of the target video networking terminal in the corresponding relation between the terminal number of the video networking terminal and the space address of the storage space allocated to the video networking terminal;
and the determining subunit is used for determining the storage space corresponding to the space address in the plurality of storage spaces.
In an alternative implementation, the video networking video service includes at least video networking video telephone and video networking cluster video conference.
Through the application, in the process of carrying out video networking video service among a plurality of video networking terminals, video networking videos received by a target video networking terminal and sent by other video networking terminals can be backed up in a video networking storage gateway, then the video networking videos can be checked by a user again, and channel keys of video channels for transmitting the video networking videos need to be checked in the backup process, so that the safety of the video networking videos can be 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.
The present application also shows an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing a method for backing up video of a video network as shown in fig. 6 when executing the computer program.
The present application also shows a computer-readable storage medium having stored thereon a computer program for causing a processor to execute a method of backing up video over a network as shown in fig. 6.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The video network video backup method and device provided by the invention are described in detail, and a specific example is applied in the text to explain the principle and the implementation 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 backup method is applied to a video storage gateway, and comprises the following steps:
receiving a video backup request; the video backup request is sent to the video networking storage gateway by a target video networking terminal through the video networking server in the process of carrying out video networking video service among a plurality of video networking terminals, the video backup request is used for backing up video networking video received by the target video networking terminal in the process of carrying out the video networking video service, the video backup request carries a channel number of a video channel of the target video networking terminal, which is used for receiving the video networking video, and the target video networking terminal is at least one of the plurality of video networking terminals;
sending a key acquisition request to the target video networking terminal through the video networking server, wherein the key acquisition request carries the channel number, and the key acquisition request is used for acquiring the channel key of the video channel according to the channel number;
receiving a channel key of the video channel, returned by the target video network terminal through the video network server according to the channel number;
sending a multicast address acquisition request to the video network server, wherein the multicast address acquisition request carries the channel number and the channel key, and the multicast address acquisition request is used for acquiring the multicast address of the video channel according to the channel number and the channel key so that the video network server verifies whether the channel key is legal or not according to the channel number, and then sends the multicast address of the video channel to the video network storage gateway under the condition that the channel key is legal;
receiving a multicast address of the video channel returned by the video network server after the channel key is verified to be legal according to the channel number;
acquiring the video of the video network from the video network server according to the multicast address;
storing the video over the video network.
2. The method according to claim 1, wherein the video networking video services comprise at least video networking video telephony and video networking trunked video conferencing.
3. The method of claim 1, wherein prior to storing the video over internet, further comprising:
and compressing the video of the video network, or compressing and encrypting the video.
4. The method of claim 1, further comprising:
receiving a video acquisition request for acquiring the video of the video network, wherein the video acquisition request is sent by the target video network terminal to the video network storage gateway through the video network server;
acquiring the stored video of the video network;
and sending the video networking video to the target video networking terminal through the video networking server.
5. The method of claim 1, wherein after storing the video over internet, further comprising:
determining whether the storage duration of the video network is greater than a preset duration;
and if the storage duration of the video networking video is longer than the preset duration, deleting the video networking video.
6. The method of claim 1, wherein after storing the video over internet, further comprising:
determining whether the duration of the video network which is not accessed is greater than a preset duration;
and if the duration of the video networking video which is not accessed is longer than the preset duration, deleting the video networking video.
7. The method of claim 1, wherein storing the video-over-internet video comprises:
determining a storage space allocated to the target video network terminal in a plurality of storage spaces in the video network storage gateway;
and storing the video of the video network in the determined storage space.
8. An apparatus for video backup, which is applied to a video storage gateway, the apparatus comprising:
the first receiving module is used for receiving a video backup request; the video backup request is sent to the video networking storage gateway by a target video networking terminal through the video networking server in the process of carrying out video networking video service among a plurality of video networking terminals, the video backup request is used for backing up video networking video received by the target video networking terminal in the process of carrying out the video networking video service, the video backup request carries a channel number of a video channel of the target video networking terminal, which is used for receiving the video networking video, and the target video networking terminal is at least one of the plurality of video networking terminals;
a first sending module, configured to send a key acquisition request to the target video networking terminal via the video networking server, where the key acquisition request carries the channel number, and the key acquisition request is used to acquire a channel key of the video channel according to the channel number;
the second receiving module is used for receiving a channel key of the video channel, returned by the target video network terminal through the video network server according to the channel number;
a second sending module, configured to send a multicast address acquisition request to the video networking server, where the multicast address acquisition request carries the channel number and the channel key, and the multicast address acquisition request is used to acquire a multicast address of the video channel according to the channel number and the channel key, so that the video networking server checks whether the channel key is legal according to the channel number, and sends the multicast address of the video channel to the video networking storage gateway when the channel key is legal;
a third receiving module, configured to receive a multicast address of the video channel, which is returned by the video networking server after verifying that the channel key is legal according to the channel number;
the first acquisition module is used for acquiring the video of the video network from the video network server according to the multicast address;
and the storage module is used for storing the video of the video network.
9. An electronic device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method for backing up video-networking video according to any one of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method for backing up video-networking videos according to any one of claims 1 to 7.
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