CN111935511A - Dynamic video stream access system and method based on http-dns - Google Patents
Dynamic video stream access system and method based on http-dns Download PDFInfo
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- CN111935511A CN111935511A CN202010998220.3A CN202010998220A CN111935511A CN 111935511 A CN111935511 A CN 111935511A CN 202010998220 A CN202010998220 A CN 202010998220A CN 111935511 A CN111935511 A CN 111935511A
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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
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
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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
- H04N21/643—Communication protocols
- H04N21/64322—IP
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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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/858—Linking data to content, e.g. by linking an URL to a video object, by creating a hotspot
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Abstract
The invention relates to the technical field of video monitoring, in particular to a dynamic video stream access system and a method based on http-dns, wherein the system comprises an access unit and a scheduling unit, and the scheduling unit comprises: the camera http-dns analysis module is used for receiving the request push-pull stream address requirement sent by the access unit and outputting an ip analysis result of the camera; the edge machine room positioning module is connected with the camera http-dns analysis module; the http-dns analysis module of the terminal user is connected with the edge machine room positioning module; and the terminal path calculation module is connected with the http-dns analysis module of the terminal user and outputs the plain text push flow address and the plain text pull flow address to the access unit. The method has the advantages of realizing accurate cloud access, fault switching, decentralization and the like.
Description
Technical Field
The invention relates to the technical field of video monitoring, in particular to a dynamic video stream access system and method based on http-dns.
Background
In a monitoring scene, stream pushing is performed by a camera on a rtmp protocol in a domain name mode, and a user views the stream through the domain name, but the following problems exist:
1. in the current monitoring scene, the cloud on the camera is intensively pushed to a certain central machine room, and the certain central machine room provides service, so that on one hand, the centralized pushing method can cause larger pressure to the central machine room, and the usability cannot be ensured; on the other hand, the throughput and the concurrent processing capacity of a single central machine room are limited;
2. the camera pushes stream through the domain name, and also faces security problems, and can be subjected to situations such as dns hijacking, dns pollution, inaccurate resolution of a dns small operator and the like;
3. the domain name needs to be put on record by the public security department, and the record period and time are uncontrollable; after the recording is successful, the user is required to configure the mapping again in a domain name resolution manufacturer; the camera can not be quickly clouded, and the access threshold is higher.
Disclosure of Invention
It is an object of the present invention to provide an http-dns based dynamic video stream access system and method that overcomes some or all of the deficiencies of the prior art.
The dynamic video stream access system based on the http-dns comprises an access unit and a scheduling unit, wherein:
the access unit is used for sending a request push flow/pull flow address and issuing a push flow/pull flow address;
the scheduling unit is used for scheduling a push flow address and a pull flow address, and specifically comprises:
the camera http-dns analysis module is used for receiving the request push-pull stream address requirement sent by the access unit and outputting an ip analysis result of the camera;
the edge machine room positioning module is connected with the camera http-dns analysis module and used for receiving the result of ip analysis by the camera http-dns analysis module and outputting a target machine room of camera plug flow;
the terminal user http-dns analysis module is connected with the edge machine room positioning module and used for multiplexing the camera http-dns analysis module, analyzing the ip information of the terminal user and outputting an ip analysis result of the terminal user;
and the terminal path calculation module is connected with the http-dns analysis module of the terminal user and used for receiving ip analysis results of the camera and the terminal user and outputting push stream and pull stream addresses of the plaintext to the access unit.
Preferably, the camera http-dns parsing module includes:
the camera http-dns analysis gateway is used for processing massive concurrent requests;
the http-dns analysis sub-modules are connected with the camera http-dns analysis gateway and used for analyzing and outputting ip analysis results of the camera;
and the http-dns resource pool synchronization module is connected with the plurality of http-dns analysis sub-modules and is used for synchronizing with the resource pool.
Preferably, the http-dns resource pool synchronizing module is connected with the object cache ip resource pool.
Preferably, the object cache ip resource pool is connected with a global ip resource pool.
Preferably, the ip analysis result of the camera comprises the country, the region, the province and the city where the camera is located, the access operator and the longitude and latitude information.
Preferably, the edge machine room positioning module includes:
the geographic matching submodule is used for selecting an edge machine room closest to the position of the camera;
the operator matching submodule is connected with the geographic matching submodule and used for selecting an edge machine room which is most matched with the camera network;
the machine room load calculation submodule is connected with the operator matching submodule and used for further selecting an edge machine room with proper comprehensive load;
the machine room load calculation submodule is connected with a target machine room.
Preferably, the scheduling unit further comprises an address encryption module connected with the terminal path computation module, and the address encryption module is used for encrypting push stream and pull stream addresses of a plaintext and signing token.
The invention also provides a dynamic video stream access method based on the http-dns, which adopts the dynamic video stream access system based on the http-dns and comprises the following steps:
firstly, a terminal user sends a request for watching a camera, and triggers an access unit to request a scheduling unit to transfer a push-pull stream address;
secondly, a camera http-dns analysis module in the scheduling unit receives the request push-pull stream address requirement sent by the access unit and outputs an ip analysis result of the camera;
thirdly, the edge machine room positioning module receives the result of ip analysis by the camera and outputs a target machine room pushed by the camera;
fourthly, the http-dns analysis module of the terminal user multiplexes the http-dns analysis module of the camera to analyze the ip information of the terminal user and output the ip analysis result of the terminal user;
fifthly, the terminal path calculation module receives ip analysis results of the camera and the terminal user and outputs push stream and pull stream addresses of the plaintext to the access unit;
and sixthly, the access unit sends the lower push flow address to the camera and sends the lower pull flow address to the terminal user.
Preferably, the analysis method of the camera http-dns analysis module is as follows:
(1) the camera http-dns analysis gateway receives an external analysis request and then sends the external analysis request to a plurality of http-dns analysis sub-modules in parallel;
(2) and the plurality of http-dns analysis sub-modules analyze the ip and output the information of the country, the region, the province and the access operator and the longitude and latitude where the camera is located according to the resources of the http-dns resource pool synchronization module, and provide basic input for subsequent modules.
Preferably, the positioning method of the edge machine room positioning module comprises the following steps:
a. after receiving the ip analysis result of the camera, the geographic matching sub-module selects an edge machine room closest to the camera to realize nearby access to cloud;
b. the operator matching submodule selects an edge machine room which is most matched with the camera network, so that the situation of cross-network operators is avoided;
c. and the machine load calculation submodule further selects the edge machine room with the most suitable comprehensive load, and filters out the machine room with higher load so as to realize the quick switching of machine room faults.
The http-dns dynamic ip analysis technology replaces the traditional domain name analysis mode, and can accurately analyze dns, machine room fault switching, load balancing and the like, so that the pressure of a single central machine room is shared in different machine rooms, and the availability and the concurrent processing capacity are improved.
The cloud on the camera and the user watch can avoid a lengthy domain name filing process, and the geographical areas of the camera and the viewer, operators and the like are located through dynamic ip analysis, so that the most accurate cloud access and fault control are realized. The camera may cloud on a second level.
The invention effectively solves the problems, and has the advantages of accurate cloud access, fault switching, decentralization and the like through a scheme of dynamic http-dns and dynamic ip address resolution.
Drawings
Fig. 1 is a block diagram illustrating a structure of an http-dns-based dynamic video stream access system according to embodiment 1;
fig. 2 is a block diagram of a http-dns parsing module of the camera in embodiment 1;
fig. 3 is a block diagram of the edge machine room positioning module in embodiment 1.
Detailed Description
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples. It is to be understood that the examples are illustrative of the invention and not limiting.
Referring to fig. 1, this embodiment provides a dynamic video stream access system based on http-dns, where http-dns directly requests an http acquisition server to record an address through ip, and there is no process of querying a local operator for domain analysis.
The http-dns-based dynamic video stream access system of the present embodiment includes an access unit and a scheduling unit, where:
the access unit is used for sending request push flow/pull flow addresses and issuing push flow/pull flow addresses. The access unit is connected with a camera and a terminal user, the terminal user sends a request for watching to the access unit, then the access unit requests the scheduling unit for a push-pull stream address, then the access unit sends the push stream to the lower push stream address to the camera, and sends the lower push stream address to the terminal user.
The scheduling unit is used for scheduling a push flow address and a pull flow address, and specifically comprises: the system comprises a camera http-dns analysis module, an edge machine room positioning module, a terminal user http-dns analysis module and a terminal path calculation module.
The camera http-dns analysis module is used for receiving a request push-pull stream address request sent by the access unit and outputting an ip analysis result of the camera, when a terminal user wants to check the shooting condition of a certain camera, the user terminal initiates a check request or an instruction, the access unit acquires the check request or the instruction, analyzes the ip address of the camera which wants to check, and acquires the ip address of the camera.
The camera http-dns resolution module of the embodiment of the invention replaces the traditional domain name resolution mode, and realizes accurate geographic resolution and positioning on the ip address of the specific camera.
And the edge machine room positioning module is connected with the camera http-dns analysis module and used for receiving the result of ip analysis by the camera http-dns analysis module, analyzing the geographical position of the camera and the network operator information and outputting a target machine room for camera plug flow.
And the terminal user http-dns analysis module is connected with the edge machine room positioning module and used for multiplexing the camera http-dns analysis module, analyzing the ip information of the terminal user and outputting the ip analysis result of the terminal user.
And the terminal path calculation module is connected with the http-dns analysis module of the terminal user and used for receiving ip analysis results of the camera and the terminal user and outputting push stream and pull stream addresses of the plaintext to the access unit.
Referring to fig. 2, as a more preferred embodiment, the camera http-dns parsing module includes:
the camera http-dns analysis gateway is used for processing massive concurrent requests; the camera http-dns resolution gateway can be horizontally expanded into a plurality of modules, and massive concurrent requests are supported.
The http-dns resolution sub-modules, such as the http-dns resolution sub-module 1 and the http-dns resolution sub-module 2 … … in fig. 2, are connected to the camera http-dns resolution gateway, and are used for resolving and outputting the ip resolution result of the camera.
And the http-dns resource pool synchronization module is connected with the plurality of http-dns analysis sub-modules and is used for synchronizing with the resource pool. The http-dns resource pool synchronization module can realize the comprehensiveness and accuracy of basic resources and is the basis of dynamic ip analysis.
In this embodiment, the http-dns resource pool synchronization module is connected to an object cache ip resource pool.
In this embodiment, the ip resource pool of the object cache is connected to a global ip resource pool.
In this embodiment, the ip analysis result of the camera includes the country, area, province, access operator, and latitude and longitude information of the camera.
Referring to fig. 3, the edge machine room positioning module is also a key component, and correctly positions the camera and obtains information according to a request or instruction of the terminal user to view the camera, and as a more preferred embodiment, the edge machine room positioning module includes the following:
a geographic matching submodule: when information such as a geographical position and an operator contained in a camera which a terminal user wants to check is obtained, an edge machine room closest to the camera is selected according to the geographical position and the operator information of the camera, and therefore the nearby access to the cloud can be achieved.
Operator matching submodule: in an actual scene, a large number of cameras are checked by different terminal users at any time and any place, and an operator matching submodule is connected with a geographic matching submodule and used for selecting an edge machine room which is most matched with a camera network, so that the situation of cross-network operators is avoided.
The machine room load calculation submodule is connected with the operator matching submodule, under certain extreme conditions, the computer room load calculation submodule is not necessarily suitable for the edge machine room with the closest physical distance, and is used for further selecting the edge machine room with the suitable comprehensive load according to the operation load condition of the central machine room, filtering the machine room with the higher load and realizing the quick switching of machine room faults.
The machine room load calculation submodule is connected with a target machine room.
In addition, as a more preferred implementation manner, in this embodiment, the scheduling unit further includes an address encryption module connected to the terminal path calculation module, and the address encryption module is configured to encrypt push stream and pull stream addresses of a plaintext and sign token, so as to further improve the security of the system.
The Token is a string of character strings generated by the server side and used as a Token requested by the client side, after the server side logs in for the first time, the server generates a Token and returns the Token to the client side, and the client side only needs to take the Token to request data before later without taking a user name and a password again.
In this embodiment, when the terminal path calculation module performs calculation, the variation trend of the water level of the current video stream system is evaluated in real time according to the water level line AI prediction model, and then corresponding video stream node branching, clipping, recovering and maintaining are performed according to the real-time evaluation result, so as to obtain push stream and pull stream addresses finally. When the system enters a water level rising mode, the video stream root node is branched into a plurality of levels of video stream sub-nodes according to the actual situation; when the system enters a water level descending mode, the video stream nodes are cut and recovered according to the actual situation; when the system enters the water level mitigation module, the video stream node is maintained.
The embodiment also provides a dynamic video stream access method based on http-dns, which includes the following steps:
firstly, a terminal user sends a request for watching a camera, and triggers an access unit to request a scheduling unit to transfer a push-pull stream address;
secondly, a camera http-dns analysis module in the scheduling unit receives the request push-pull stream address requirement sent by the access unit and outputs an ip analysis result of the camera;
thirdly, the edge machine room positioning module receives the result of ip analysis by the camera and outputs a target machine room pushed by the camera;
fourthly, the http-dns analysis module of the terminal user multiplexes the http-dns analysis module of the camera to analyze the ip information of the terminal user and output the ip analysis result of the terminal user;
fifthly, the terminal path calculation module receives ip analysis results of the camera and the terminal user and outputs push stream and pull stream addresses of the plaintext to the access unit;
and sixthly, the access unit sends the lower push flow address to the camera and sends the lower pull flow address to the terminal user.
As a more preferred embodiment, after the terminal path computation module obtains the push-pull stream address, encryption and token signing are performed.
The analysis method of the camera http-dns analysis module comprises the following steps:
(1) the camera http-dns analysis gateway receives an external analysis request and then sends the external analysis request to a plurality of http-dns analysis sub-modules in parallel;
(2) and the plurality of http-dns analysis sub-modules analyze the ip and output the information of the country, the region, the province and the access operator and the longitude and latitude where the camera is located according to the resources of the http-dns resource pool synchronization module, and provide basic input for subsequent modules.
The positioning method of the edge machine room positioning module comprises the following steps:
a. after receiving the ip analysis result of the camera, the geographic matching sub-module selects an edge machine room closest to the camera to realize nearby access to cloud;
b. the operator matching submodule selects an edge machine room which is most matched with the camera network, so that the situation of cross-network operators is avoided;
c. and the machine load calculation submodule further selects the edge machine room with the most suitable comprehensive load so as to realize the quick switching of machine room faults and filter out the machine room with higher load.
The system and the method can accurately analyze the dns, switch the machine room faults, balance the load and the like by replacing the traditional domain name analyzing mode with the http-dns dynamic ip analyzing technology, thereby sharing the pressure of a single central machine room into different machine rooms, and improving the availability and the concurrent processing capacity.
The cloud on the camera and the user watch can avoid a lengthy domain name filing process, and the geographical areas of the camera and the viewer, operators and the like are located through dynamic ip analysis, so that the most accurate cloud access and fault control are realized. The camera may cloud on a second level.
When a camera manufacturer acquires a push-pull stream address, the camera manufacturer needs to carry the ip of a terminal user and the ip of a camera which the camera manufacturer belongs to; after the system processing, the encrypted push flow and pull flow addresses are finally obtained; then, the manufacturer needs to push the streaming address to the camera head end, trigger the camera head end to push the streaming, and push the streaming address to the terminal user, so that the user can watch the streaming.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (10)
1. The dynamic video stream access system based on the http-dns is characterized in that: the system comprises an access unit and a scheduling unit, wherein:
the access unit is used for sending a request push flow/pull flow address and issuing a push flow/pull flow address;
the scheduling unit is used for scheduling a push flow address and a pull flow address, and specifically comprises:
the camera http-dns analysis module is used for receiving the request push-pull stream address requirement sent by the access unit and outputting an ip analysis result of the camera;
the edge machine room positioning module is connected with the camera http-dns analysis module and used for receiving the result of ip analysis by the camera http-dns analysis module and outputting a target machine room of camera plug flow;
the terminal user http-dns analysis module is connected with the edge machine room positioning module and used for multiplexing the camera http-dns analysis module, analyzing the ip information of the terminal user and outputting an ip analysis result of the terminal user;
and the terminal path calculation module is connected with the http-dns analysis module of the terminal user and used for receiving the ip analysis results of the camera and the terminal user and outputting the clear stream pushing address and the clear stream pulling address to the access unit.
2. The http-dns based dynamic video stream access system of claim 1, wherein: the camera http-dns analysis module comprises:
the camera http-dns analysis gateway is used for processing massive concurrent requests;
the http-dns analysis sub-modules are connected with the camera http-dns analysis gateway and used for analyzing and outputting ip analysis results of the camera;
and the http-dns resource pool synchronization module is connected with the plurality of http-dns analysis sub-modules and is used for synchronizing with the resource pool.
3. The http-dns based dynamic video stream access system as recited in claim 2, wherein: the http-dns resource pool synchronization module is connected with an object cache ip resource pool.
4. A http-dns based dynamic video stream access system according to claim 3, wherein: the object cache ip resource pool is connected with a global ip resource pool.
5. The http-dns based dynamic video stream access system as recited in claim 2, wherein: the ip analysis result of the camera comprises the country, the region, the province and the city where the camera is located, the access operator and the longitude and latitude information.
6. The http-dns based dynamic video stream access system of claim 1, wherein: edge computer lab orientation module includes:
the geographic matching submodule is used for selecting an edge machine room closest to the position of the camera;
the operator matching submodule is connected with the geographic matching submodule and used for selecting an edge machine room which is most matched with the camera network;
the machine room load calculation submodule is connected with the operator matching submodule and used for further selecting an edge machine room with proper comprehensive load;
the machine room load calculation submodule is connected with a target machine room.
7. The http-dns based dynamic video stream access system of claim 1, wherein: the scheduling unit also comprises an address encryption module connected with the terminal path calculation module, and the address encryption module is used for encrypting the push stream address and the pull stream address of the plaintext and signing token.
8. The dynamic video stream access method based on the http-dns is characterized by comprising the following steps: which employs the http-dns based dynamic video streaming access system according to any of claims 1-7, comprising the steps of:
firstly, a terminal user sends a request for watching a camera, and triggers an access unit to request a scheduling unit to transfer a push-pull stream address;
secondly, a camera http-dns analysis module in the scheduling unit receives the request push-pull stream address requirement sent by the access unit and outputs an ip analysis result of the camera;
thirdly, the edge machine room positioning module receives the result of ip analysis by the camera and outputs a target machine room pushed by the camera;
fourthly, the http-dns analysis module of the terminal user multiplexes the http-dns analysis module of the camera to analyze the ip information of the terminal user and output the ip analysis result of the terminal user;
fifthly, the terminal path calculation module receives ip analysis results of the camera and the terminal user and outputs push stream and pull stream addresses of the plaintext to the access unit;
and sixthly, the access unit sends the lower push flow address to the camera and sends the lower pull flow address to the terminal user.
9. The http-dns based dynamic video stream accessing method according to claim 8, wherein: the method for analyzing the camera http-dns analysis module comprises the following steps:
(1) the camera http-dns analysis gateway receives an external analysis request and then sends the external analysis request to a plurality of http-dns analysis sub-modules in parallel;
(2) and the plurality of http-dns analysis sub-modules analyze the ip and output the information of the country, the region, the province and the access operator and the longitude and latitude where the camera is located according to the resources of the http-dns resource pool synchronization module, and provide basic input for subsequent modules.
10. The http-dns based dynamic video stream accessing method according to claim 8, wherein: the positioning method of the edge machine room positioning module comprises the following steps:
a. after receiving the ip analysis result of the camera, the geographic matching sub-module selects an edge machine room closest to the camera to realize nearby access to cloud;
b. the operator matching submodule selects an edge machine room which is most matched with the camera network, so that the situation of cross-network operators is avoided;
c. and the machine load calculation submodule further selects the edge machine room with the most suitable comprehensive load, and filters out the machine room with higher load so as to realize the quick switching of machine room faults.
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