CN105141638B - A kind of method for down loading and device of video resource - Google Patents
A kind of method for down loading and device of video resource Download PDFInfo
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- CN105141638B CN105141638B CN201510632214.5A CN201510632214A CN105141638B CN 105141638 B CN105141638 B CN 105141638B CN 201510632214 A CN201510632214 A CN 201510632214A CN 105141638 B CN105141638 B CN 105141638B
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
- H04L63/0227—Filtering policies
- H04L63/0236—Filtering by address, protocol, port number or service, e.g. IP-address or URL
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/104—Peer-to-peer [P2P] networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
Abstract
The embodiment of the invention discloses a kind of method for down loading and device of Online Video resource.The method is applied to be equipped with the electronic equipment of browser and video resource transmission client, including:When browser starts, starts according to configuration and execute preset PAC script files;The PAC script files according to it includes url filtering rule, the URL of video resource is filtered out in the URL obtained from browser;And according to it includes the address information for being communicated with client will filter obtained by video resource URL be sent to client;Client receives the video resource URL and downloads video resource data corresponding with the URL of the video resource using P2P technologies according to the URL of the video resource;The video resource data of download are returned into browser according to the address information for being communicated with client for including in the PAC scripts.The application risk that computer realizes P2P functions can be reduced using the embodiment of the present invention.
Description
Technical field
The present invention relates to information technology field, more particularly to a kind of the method for down loading and device of Online Video resource.
Background technology
Along with the continuous improvement of people's entertainment requirements, corresponding multimedia technology is also grown rapidly.Its
The growth of middle video technique is particularly evident, and video definition standard also has occurred from 720P to 1080P, then turns to 4K ultra high-definitions
Become.Multimedia be unable to do without internet, and Online Video has become the important component of current net fun.Matched
Network support also obtains tremendous development, and with the reform of operator's broadband service, the broadband services of 10M, 20M, 100M grade is just
Or have been obtained for popularizing.The bottleneck of online viewing HD video has been broken, and online HD video supply will be at
It, also will be as the service of user preferentially selected for the main services of video website.
Currently, in order to promoted HD video transmission quality and reduce video supplier server stress, P2P technologies by
It is widely used in sharing field in video resource.For computer, current P2P technologies are mainly counted by the individual in user
Procotol is installed to realize on calculation machine, the procotol of installation can be to computer LSP (Layered Service
Provider, hierarchical service program) function of module modifies, and modification content includes URL (Uniform Resource
Locator, uniform resource locator) filtering rule and the network port definition.Browser can all send out webpage URL to be asked
LSP modules are sent to, are mounted with that the LSP modules of procotol can go out URL according to corresponding procotol information filtering, then LSP
The URL that module can will filter out is sent to corresponding P2P modules to download corresponding video resource.
The data transmission principle of P2P technologies itself is to need constantly to obtain not by different servers or client
Same data, therefore corresponding url filtering rule and network port information need the update of upper frequency.But personal computer
LSP modules belong to system-level module, and most network access functions of personal computer are come in fact by LSP modules
It is existing, thus the LSP modules of system can simultaneously occupied by multiple processes, this allow for LSP moulds url filtering rule in the block and
Network port information is difficult to be changed, and improves the realization difficulty of personal computer P2P functions;For the same reason, in reality
When existing computer P2P functions, if LSP moulds network port information in the block malfunctions or accidentally deleted by user, personal meter will be caused
The serious problems that calculation machine network access functions are lost bring larger risk for the use of user personal computer.
Invention content
The embodiment of the present invention is designed to provide a kind of method for down loading and device of video resource, to reduce computer reality
The risk of existing video resource P2P transfer functions.
To achieve the above object, an embodiment of the present invention provides a kind of method for down loading of Online Video resource, the methods
Applied to the electronic equipment for being equipped with browser and video resource transmission client, including:
When browser starts, starts according to configuration and execute preset PAC script files;
The PAC script files according to it includes url filtering rule, filter out video in the URL obtained from browser
The URL of resource;And according to it includes the address information for being communicated with client will filter obtained by video resource URL
It is sent to client;
Client receives the video resource URL and according to the URL of the video resource, using P2P technologies, download and institute
State the corresponding video resource data of URL of video resource;By the video resource data of download, according to including in the PAC scripts
The address information for being communicated with client, return to browser.
Wherein, preferably, the PAC script files are created and stored on by client where the client and browser
The designated position of disk in electronic equipment;Browser is configured to start " auto-configuration script " function simultaneously;
The PAC script files are read from the designated position of the disk according to configuration by browser and start execution.
Preferably, the address information for being communicated with client includes:The IP address of the electronic equipment and
Network port information for being communicated with client;
The PAC script files according to it includes the address information for being communicated with client, will be obtained by filtering
Video resource URL the step of being sent to client, including:
The PAC script files access the electronic equipment according to the IP address, and according to the network port information,
The video resource URL is sent to the client by the corresponding network port;
The video resource data by download are used to be communicated with client according to include in the PAC scripts
Address information, return to browser, be:The video resource data of download are passed through into correspondence according to the network port information
The network port, return to browser.
Preferably, described use P2P technologies, video resource corresponding with the video resource URL obtained by the filtering is downloaded
Data are realized particular by preset P2P modules in the calling client.
The embodiment of the present invention additionally provides a kind of download apparatus of Online Video resource, including:
PAC script file starting modules when starting for browser, start according to configuration and execute preset PAC scripts text
Part;
PAC script file execution modules, for according to it includes url filtering rule, mistake in the URL obtained from browser
Filter out the URL of video resource;And according to it includes the address information for being communicated with client will filter obtained by regard
Frequency resource URL is sent to client;
Client runs module, for when client receives the video resource URL, according to the video resource URL,
Using P2P technologies, video resource data corresponding with the video resource URL are downloaded;And by the video resource data of download, according to
According to the address information for being communicated with client for including in the PAC scripts, browser is returned to.
Preferably, the device further includes:
PAC script generation modules, for being created PAC script files by client and being stored to disk in the electronic equipment
Designated position;
Browser configuration module, for client complete PAC script files generate and storage after, configuration browser with
Start " auto-configuration script " function.
Preferably, the address information for being communicated with client includes:The IP address of the electronic equipment and
Network port information for being communicated with client;
The PAC script files execution module, including:Filter submodule and sending submodule;
The filter submodule, the url filtering rule for including according to PAC script files, the URL obtained from browser
In filter out the URL of video resource;
The sending submodule accesses the electronics specifically for the IP address for including according to the PAC script files and sets
It is standby, and according to the network port information, the video resource URL is sent to by the client by the corresponding network port
End;
The client runs module, including:Video resource downloads submodule and video resource returns to submodule;
The video resource downloads submodule, is used for when client receives the video resource URL, according to the video
Resource URL downloads video resource data corresponding with the video resource URL using P2P technologies;
The video resource returns to submodule, for according to the network port information, by the video resource data of download,
By the corresponding network port, browser is returned to.
Preferably, the video resource downloads submodule, by preset P2P modules in the calling client come real
It is existing.
The method for down loading and device of this video resource provided in an embodiment of the present invention, using browser agent technology and
P2P technologies will realize that PAC script files are written in the information that P2P functions need.When browser starts, starts according to configuration and execute
Preset PAC script files;The URL for filtering out video resource is sent from the PAC script files to client, then by client
The video resource data downloaded using P2P technologies are returned into browser.Current major browsers are supported to script file
Modification, it is seen that PAC scripts are opposite to be easier to change.Meanwhile it only can be in electronics when browser executes the PAC script files
Increase a task process in equipment, once the process malfunctions, regarding corresponding to the URL that the only described url filtering rule filters out
Frequency resource transmission can be affected, and the other network functions of system can't be severely impacted.It in summary it can be seen, in user's profit
When watching video resource with P2P functions, the embodiment of the present invention also reduces P2P work(while reducing P2P functions and realizing difficulty
The application risk of energy.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
A kind of specific implementation flow of the method for down loading for Online Video resource that Fig. 1 is provided by the embodiment of the present invention
Figure;
Fig. 2 is that data interaction relationship is illustrated in a kind of method for down loading of Online Video resource provided in an embodiment of the present invention
Figure;
The specific implementation stream of the method for down loading for another Online Video resource that Fig. 3 is provided by the embodiment of the present invention
Cheng Tu;
A kind of download apparatus structural schematic diagram for Online Video resource that Fig. 4 is provided by the embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
In the resource transmission field of current internet, P2P Resource Sharing Technologies have obtained very universal application.Mesh
Before, Online Video has become the major way of public viewing video resource, faces the P2P transmission problems of Online Video resource,
An embodiment of the present invention provides a kind of method for down loading of Online Video resource, this method can flexible institute in safe acquisition webpage
The URL of the video resource needed promotes user experience to support the efficient download function of P2P, reduces computer and realizes video money
The application risk of source P2P functions.
A kind of method for down loading for Online Video resource that the embodiment of the present invention is provided, the method are applied to be equipped with clear
Look at device and video resource transmission client electronic equipment.
Referring to Fig. 1, the present invention implements a kind of method for down loading of the Online Video resource provided, and steps are as follows for specific implementation:
Step S101 when browser starts, starts according to configuration and executes preset PAC script files.Whenever browser opens
It is dynamic, it will be read according to pre-configured access path and execute PAC script files.
In the present embodiment, the PAC script files can be created and stored on the client and browser by client
Disk in the electronic device designated position.PAC script file contents include mainly:The url filtering rule of video resource with
And the address information of the client and browser communication;Wherein described address information specifically includes:The IP of the electronic equipment
The network port of address and the client and browser communication.
Before being applied particularly to Online Video resource downloading, the client also configures to start correspondence browser
" auto-configuration script function ", concrete configuration method includes:It chooses and " matches automatically positioned at browser " LAN setting " window
Set script " function items, PAC script file access path is written to the address field under the function items.
In this way, when browser starts, so that it may execute preset PAC script files to start according to configuration.
Step S102, the PAC script files according to it includes url filtering rule, mistake in the URL obtained from browser
Filter out the URL of video resource;And according to it includes the address information for being communicated with client will filter obtained by regard
Frequency resource URL is sent to client.
In practical applications, which specifically includes:When browser opens Webpage, resource needed for webpage can be sent out
URL to download corresponding media resource;The transmission of these URL can all pass through the PAC script files, at this time PAC scripts text
Part can filter out the URL of corresponding video resource, remaining URL will pass through tradition according to the url filtering rule that oneself is included
Mode be routed directly to internet by LSP modules;PAC script files are according to described address information, by the video resource URL
It is sent to client in real time.
Step S103, client receives the URL of the video resource and according to the URL of the video resource, using P2P skills
Art downloads video resource data corresponding with the URL of the video resource.
It should be further noted that the step for mainly described client pass through the built-in P2P modules of calling itself
Video resource data storage location to complete, and download gained includes that the opposite stable storage of such as hard disc of computer one kind is situated between
Matter.
The video resource data of download are used to carry out with client by step S104 according to include in the PAC scripts
The address information of communication, returns to browser.
In the present embodiment, the address information for being communicated with client includes:The IP of the electronic equipment
Location and network port information for being communicated with client.
The PAC script files can access the electronic equipment according to the IP address, and according to the network port
The video resource URL is sent to the client by information by the corresponding network port;
Client is then according to the network port information, by the video resource data of download, by the corresponding network port,
Return to browser.
That is, it is same to return to the port of video resource data and the network port of the acquisition URL in this step
The network port.The video resource data of the return, video resource data that can be by the browser according to the return carry
URL information, be shown on corresponding webpage, complete Online Video resource download and broadcasting.
As shown in Fig. 2, according to the method for the embodiment of the present invention, the downloading process of video resource can be described as:
The URL of acquisition is sent to PAC script files by browser;PAC script files are according to preset filtering rule to URL
It is filtered, obtains the video resource URL of filtering gained, and according to the preset address letter for being communicated with client
Breath, client is sent to by the URL of the video resource of acquisition;P2P modules in client and other client and servers into
Row communication obtains the corresponding video resource data of URL, by the video resource data of acquisition according to the preset use of PAC script files
Browser is returned in the address information communicated with client.
As it can be seen that the method for down loading and device of this video resource provided in an embodiment of the present invention, utilize browser agent skill
Art and P2P technologies will realize that PAC script files are written in the information that P2P functions need.When browser starts, start according to configuration
Execute preset PAC script files;The URL for filtering out video resource is sent from the PAC script files to client, then by visitor
The video resource data downloaded using P2P technologies are returned to browser by family end.Current major browsers are supported to script
The modification of file, it is seen that PAC scripts are opposite to be easier to change.Meanwhile it only can be when browser executes the PAC script files
Increase a task process on electronic equipment, once the process malfunctions, corresponding to the URL that the only described url filtering rule filters out
Video resource transmission can be affected, the other network functions of system can't be severely impacted.In summary it can be seen, with
When family is using P2P functions viewing video resource, the embodiment of the present invention also reduces while reducing P2P functions and realizing difficulty
The application risk of P2P functions.
Viewing experience when Online Video is browsed in order to further enhance user, in a kind of preferred implementation of the present invention
In, referring to Fig. 3, the method for down loading of another Online Video resource is provided, compared with previous embodiment, the present embodiment originates in
After the PAC scripts generate, the automatic switch work(to the browser auto-configuration script function is increased in specific steps
Can, to avoid in the case where the client is not actuated, the browser can not obtain Online Video money by traditional approach
Source.Specific implementation step is as follows:
Step S301, the client are activated, and client automatically configures the browser, starts browser
The corresponding address field of the function is written in the PAC scripts access path by auto-configuration script function.
Step S302 when browser starts, starts according to configuration and executes preset PAC script files.
Step S303, the PAC script files according to it includes url filtering rule, mistake in the URL obtained from browser
Filter out the URL of video resource;And according to it includes the address information for being communicated with client will filter obtained by regard
Frequency resource URL is sent to client.
Step S304, client receives the URL of the video resource and according to the URL of the video resource, using P2P skills
Art downloads video resource data corresponding with the URL of the video resource.
The video resource data of download are used to carry out with client by step S305 according to include in the PAC scripts
The address information of communication, returns to browser.
In practical application, step S302~S305 can be identical with step 101~105 shown in Fig. 1, no longer superfluous here
It states.
Step S306, the client receive out code, and the client automatically configures the browser, close
Close the auto-configuration script function of the browser.
It should be further noted that the browser includes current major browsers, current major browsers are supported
At runtime to the modification of auto-configuration script function.The invention preferred embodiment, it is possible to prevente effectively from because of the client
When closed state, harmful effect caused by being experienced to the online viewing of user.
An embodiment of the present invention provides a kind of download apparatus of Online Video resource, and concrete structure is as shown in figure 4, this implementation
Example is corresponding with embodiment of the method shown in FIG. 1, including:
PAC script files starting module 410 when starting for browser, starts according to configuration and executes preset PAC scripts
File;
PAC script files execution module 420, for according to it includes url filtering rule, the URL obtained from browser
In filter out the URL of video resource;And according to it includes the address information for being communicated with client will filter obtained by
Video resource URL be sent to client;
Client runs module 430, is used for when client receives the video resource URL, according to the video resource
URL downloads video resource data corresponding with the video resource URL using P2P technologies;And by the video resource number of download
According to according to the address information for being communicated with client for including in the PAC scripts, returning to browser.
In the present embodiment, which can also include:PAC script generation modules, for creating PAC script texts by client
Part is simultaneously stored to the designated position of disk in the electronic equipment;With browser configuration module, it is used to complete PAC in client
After script file is generated and stored, configuration browser is to start " auto-configuration script " function.
In the present embodiment, the address information for being communicated with client may include:The electronic equipment
IP address and network port information for being communicated with client;
The PAC script files execution module may include:Filter submodule and sending submodule;The filtering submodule
Block, the url filtering for including according to PAC script files is regular, and video resource is filtered out in the URL obtained from browser
URL;The sending submodule accesses the electronic equipment specifically for the IP address for including according to the PAC script files, and
According to the network port information, the video resource URL is sent to by the client by the corresponding network port.
The client runs module, may include:Video resource downloads submodule and video resource returns to submodule;Institute
It states video resource and downloads submodule, for when client receives the video resource URL, according to the video resource URL, adopting
With P2P technologies, video resource data corresponding with the video resource URL are downloaded;The video resource returns to submodule, is used for
According to the network port information, the video resource data of download are returned into browser by the corresponding network port.
It is described that video resource downloads submodule, it is realized by preset P2P modules in the calling client.
For device embodiments, since it is substantially similar to the method embodiment, so fairly simple, the correlation of description
Place illustrates referring to the part of embodiment of the method.
For convenience of description, it is divided into various modules when description apparatus above with function to describe respectively.Certainly, implementing this
The function of each module is realized can in the same or multiple software and or hardware when invention.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Each embodiment in this specification is all made of relevant mode and describes, identical similar portion between each embodiment
Point just to refer each other, and each embodiment focuses on the differences from other embodiments.Especially for device reality
For applying example, since it is substantially similar to the method embodiment, so description is fairly simple, related place is referring to embodiment of the method
Part explanation.
One of ordinary skill in the art will appreciate that all or part of step in realization above method embodiment is can
It is completed with instructing relevant hardware by program, the program can be stored in computer read/write memory medium,
The storage medium designated herein obtained, such as:ROM/RAM, magnetic disc, CD etc..
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention are all contained in the protection model of the present invention
It encloses.
Claims (8)
1. a kind of method for down loading of Online Video resource, which is characterized in that the method is applied to be equipped with browser and video
The electronic equipment of resource transmission client, the method includes:
When browser starts, starts according to configuration and execute preset PAC script files;
The PAC script files according to it includes url filtering rule, filter out video resource in the URL obtained from browser
URL;And according to it includes the address information for being communicated with client will filter the video resource URL transmission of gained
To client;
Client receives the video resource URL and according to the URL of the video resource, and using P2P technologies, download is regarded with described
The corresponding video resource data of URL of frequency resource;By the video resource data of download, according to the use for including in the PAC scripts
In the address information communicated with client, browser is returned to.
2. according to the method described in claim 1, it is characterized in that, the PAC script files are created and stored on by client
The client and browser disk in the electronic device designated position;Simultaneously browser is configured " to automatically configure to start
Script " function;
The PAC script files are read from the designated position of the disk according to configuration by browser and start execution.
3. method according to claim 1, which is characterized in that the address information packet for being communicated with client
It includes:The IP address of the electronic equipment and network port information for being communicated with client;
The PAC script files according to it includes the address information for being communicated with client, will regard obtained by filtering
The step of frequency resource URL is sent to client, including:
The PAC script files access the electronic equipment according to the IP address, and according to the network port information, pass through
The video resource URL is sent to the client by the corresponding network port;
The video resource data by download, according to the ground for being communicated with client for including in the PAC scripts
Location information, returns to browser, is:The video resource data of download are passed through into corresponding net according to the network port information
Network port, returns to browser.
4. according to the method described in claim 1, it is characterized in that, it is described use P2P technologies, download with the filtering obtained by
The corresponding video resource data of video resource URL are realized particular by preset P2P modules in the calling client.
5. a kind of download apparatus of Online Video resource, which is characterized in that described device is applied to be equipped with browser and video
The electronic equipment of resource transmission client, including:
PAC script file starting modules when starting for browser, start according to configuration and execute preset PAC script files;
PAC script file execution modules, for according to it includes url filtering rule, filter out in the URL obtained from browser
The URL of video resource;And according to it includes the address information for being communicated with client will filter gained video provide
Origin url is sent to client;
Client runs module, for when client receives the video resource URL, according to the video resource URL, using
P2P technologies download video resource data corresponding with the video resource URL;And by the video resource data of download, according to institute
The address information for being communicated with client for including in PAC scripts is stated, browser is returned to.
6. device according to claim 5, which is characterized in that further include:
PAC script generation modules, the finger for being created PAC script files by client and being stored to disk in the electronic equipment
Positioning is set;
Browser configuration module, for after completing PAC script files and generating and store, configuration browser to be to start in client
" auto-configuration script " function.
7. device according to claim 5, which is characterized in that the address information packet for being communicated with client
It includes:The IP address of the electronic equipment and network port information for being communicated with client;
The PAC script files execution module, including:Filter submodule and sending submodule;
The filter submodule, the url filtering for including according to PAC script files is regular, mistake in the URL obtained from browser
Filter out the URL of video resource;
The sending submodule accesses the electronic equipment specifically for the IP address for including according to the PAC script files, and
According to the network port information, the video resource URL is sent to by the client by the corresponding network port;
The client runs module, including:Video resource downloads submodule and video resource returns to submodule;
The video resource downloads submodule, is used for when client receives the video resource URL, according to the video resource
URL downloads video resource data corresponding with the video resource URL using P2P technologies;
The video resource returns to submodule, for passing through the video resource data of download according to the network port information
The corresponding network port, returns to browser.
8. device according to claim 5, which is characterized in that the video resource downloads submodule, described in calling
Preset P2P modules are realized in client.
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CN106453094A (en) * | 2016-12-27 | 2017-02-22 | 儒安科技有限公司 | Accelerated access method and system of network resources |
CN110866165A (en) * | 2019-10-31 | 2020-03-06 | 天津市国瑞数码安全系统股份有限公司 | Network video acquisition method and system |
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CN102098327A (en) * | 2010-12-15 | 2011-06-15 | 百度在线网络技术(北京)有限公司 | Method and device for downloading online video sniffer |
CN102868909A (en) * | 2011-10-17 | 2013-01-09 | 苏州迈科网络安全技术股份有限公司 | Method and device for caching MP4 online video |
CN102857575A (en) * | 2012-09-21 | 2013-01-02 | 深圳市宜搜科技发展有限公司 | Download method and system for Internet resources |
CN103856827A (en) * | 2012-11-30 | 2014-06-11 | 中国科学院声学研究所 | Service simulation interaction-based video content obtaining method and system |
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