CN104038842A - Method and device for pre-fetching requested program information in CDN (Content Delivery Network) network - Google Patents
Method and device for pre-fetching requested program information in CDN (Content Delivery Network) network Download PDFInfo
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Abstract
The invention aims at providing a method and device for pre-fetching requested program information in CDN (Content Delivery Network) network. The method comprises the following steps: determining a corresponding first-level M3U8 document according to the requested program information to be pre-fetched; determining a corresponding second-level M3U8 document according to the first-level M3U8 document; downloading the requested program information from a CDN source node to a CDN service node according to the second-level M3U8 document, so as to meet the requirements on subsequent related programs on demand. Compared with the prior art, the method and device have the advantages that the utilization rate of bandwidth source is raised, the program interviewing experience of a user is improved; as a set top box accesses the last updated program information through the edge CDN service node, the program information appears in the edge CDN service node, returning to the source to reach a central CDN service node is not needed, and thus the efficiency of requesting the broadcasting is improved.
Description
Technical field
The present invention relates to computer realm, relate in particular to a kind of technology for the request program information of looking ahead at CDN network.
Background technology
Look ahead is that content-based service provider and Virtual network operator are at construction content transmission platform (CDN, Content Delivery Network) time, by the integrated prefetch module of CDN node that user serves being provided and fetching in advance in advance the programme content in the CDN node of source in the mode of Hui Yuan.
The basic mechanism of Hui Yuan is request, response modes, by user's order request, is driven.Therefore, how time source bandwidth is utilized is the behavior driving by people, there is no program request, just there is no Hui Yuan, and circuit just can not be utilized.At present without the content of prefetch policy, return source side formula, do not make full use of the resource of circuit.For example, He operator platform has docked, and before operator does not distribute telephone numbers or when small-scale distributing telephone numbers, the utilance of circuit is extremely low.And for example, user sees that TV is generally time segment, conventionally at night 6 o'clock to 10 o'clock be the peak period of seeing TV, other time, particularly at 0 in evening is the low ebb phase of seeing TV to 6 of mornings.In peak period, can produce a large amount of Hui Yuan, very high to the utilance of bandwidth, even cause special line not enough; And in the low ebb phase, bandwidth is substantially idle.
Therefore, how to make full use of resource, improve the efficiency of user video program request, become those skilled in the art and need one of problem of solution badly.
Summary of the invention
The object of this invention is to provide a kind of method and apparatus for the request program information of looking ahead at CDN network.
According to an aspect of the present invention, provide a kind of method for the request program information of looking ahead at CDN network, wherein, the method comprises:
A, according to request program information to be looked ahead, determines corresponding one-level M3U8 file;
B determines corresponding secondary M3U8 file according to described one-level M3U8 file;
C is downloaded to CDN service node by described request program information from CDN source node according to described secondary M3U8 file, to meet follow-up relevant order request.
According to a further aspect in the invention, also provide a kind of equipment for the request program information of looking ahead at CDN network, wherein, this equipment comprises:
First device, for according to request program information to be looked ahead, determines corresponding one-level M3U8 file;
The second device, for determining corresponding secondary M3U8 file according to described one-level M3U8 file;
The 3rd device, for being downloaded to CDN service node by described request program information from CDN source node according to described secondary M3U8 file, to meet follow-up relevant order request.
Compared with prior art, the present invention is according to request program information to be looked ahead, determine corresponding one-level M3U8 file, and then determine corresponding secondary M3U8 file according to this one-level M3U8 file, according to this secondary M3U8 file, this request program information is downloaded to CDN service node from CDN source node again, to meet follow-up relevant order request, improved bandwidth resources utilance, and improved user's programming access experience.When the programme information of the latest update of Set Top Box access edge C DN service node, this programme information is edge C DN service node Already in, without Hui Yuan, to central CDN service node, has improved program request efficiency.
Further, after new CDN service node construction completes, pre-loaded request program information necessarily, thereby the video access request of customer in response better; When idle periods equiband utilance is lower, carry out looking ahead of IP Information On Demand, thereby improve bandwidth availability ratio, also avoid affecting user's normal access request; When program updating information meets the requirement of renewal threshold value, download the programme information of this renewal to CDN service node, thereby respond better user's video access request.
Further, the CDN service node of the programme information before program updating information is taken in advance and exist upgrades, rather than CDN service node arbitrarily, further meet user's video request program demand.
Accompanying drawing explanation
By reading the detailed description that non-limiting example is done of doing with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 illustrates a kind of equipment schematic diagram for the request program information of looking ahead at CDN network according to one aspect of the invention;
Fig. 2 illustrates a kind of method flow diagram for the request program information of looking ahead at CDN network according to a further aspect of the present invention.
In accompanying drawing, same or analogous Reference numeral represents same or analogous parts.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
In typical configuration of the application, the equipment of terminal, service network and trusted party include one or more processors (CPU), input/output interface, network interface and internal memory.
Internal memory may comprise the volatile memory in computer-readable medium, and the forms such as random access memory (RAM) and/or Nonvolatile memory, as read-only memory (ROM) or flash memory (flash RAM).Internal memory is the example of computer-readable medium.
Computer-readable medium comprises that permanent and impermanency, removable and non-removable media can realize information by any method or technology and store.Information can be module or other data of computer-readable instruction, data structure, program.The example of the storage medium of computer comprises, but be not limited to phase transition internal memory (PRAM), static RAM (SRAM), dynamic random access memory (DRAM), the random access memory of other types (RAM), read-only memory (ROM), Electrically Erasable Read Only Memory (EEPROM), fast flash memory bank or other memory techniques, read-only optical disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette tape, the storage of tape magnetic rigid disk or other magnetic storage apparatus or any other non-transmission medium, can be used for the information that storage can be accessed by computing equipment.According to defining herein, computer-readable medium does not comprise non-temporary computer readable media (transitory media), as data-signal and the carrier wave of modulation.
Fig. 1 illustrates a kind of equipment schematic diagram for the request program information of looking ahead at CDN network according to one aspect of the invention.Equipment 1 comprises first device 101, the second device the 102 and the 3rd device 103.
Wherein, first device 101, according to request program information to be looked ahead, is determined corresponding one-level M3U8 file.Particularly, first device 101 for example reads specific file from the assigned address of third party device, to obtain request program information to be looked ahead, as " temperature content program monofile " or " the more programme excel form document of fresh content " etc.; Subsequently, this first device 101, according to this request program information to be looked ahead and corresponding one-level M3U8 file address thereof, is determined corresponding one-level M3U8 file.
For example, the temperature data of network analysis user on-demand content, determine temperature content, and temperature content program forms data is extracted and is organized into Excel file, and then, this temperature content program monofile is put in the catalogue of appointment.First device 101 obtains this temperature content program monofile in the catalogue of this appointment, by resolving this programme file, obtains request program information to be looked ahead, as information such as programme content codes; Subsequently, first device 101, according to this programme content code and corresponding one-level M3U8 file address, is determined corresponding one-level M3U8 file.
Those skilled in the art will be understood that the mode of above-mentioned definite one-level M3U8 is only for giving an example; the mode of other definite one-level M3U8 existing or that may occur is from now on as applicable to the present invention; also should be included in protection range of the present invention, and with way of reference, be contained in this at this.
The second device 102 is determined corresponding secondary M3U8 file according to described one-level M3U8 file.Particularly, the second device 102 according to the determined one-level M3U8 of first device 101 file address, obtains corresponding base address, then in conjunction with the content of this one-level M3U8 file, determines corresponding secondary M3U8 file address, thereby obtain this secondary M3U8 file,
Connect example, suppose that first device 101, according to programme content code and corresponding one-level M3U8 file address, determines corresponding one-level M3U8 file, one-level M3U8 document analysis result is as follows:
#EXTM3U
#EXT-X-STREAM-INF:PROGRAM-ID＝1,BANDWIDTH＝700000
HLSVodService.m3u8？_mdCode＝2755810&_cdnCode＝BTV&_type＝1&_rCode＝TerOut_10180&_userId＝020341000003789&_categoryPath＝SMG_LG,SMG_LG_TV,&_adPositionId＝01001000&_adCategorySource＝0&token_mod＝&_client＝103&taskID＝&_cms＝&_flag＝.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID＝1,BANDWIDTH＝1300000
HLSVodService.m3u8？_mdCode＝2755809&_cdnCode＝BTV&_type＝1&_rCode＝TerOut_10180&_userId＝020341000003789&_categoryPath＝SMG_LG,SMG_LG_TV,&_adPositionId＝01001000&_adCategorySource＝0&token_mod＝&_client＝103&taskID＝&_cms＝&_flag＝.m3u8
The second device 102 is as follows according to acquisition base address, one-level M3U8 file address:
http://gslb.bestvcdn.com/gslb/program/FDN/P1224900_13/
Subsequently, this second device 102 splices one-level M3U8 file content on above-mentioned base address, thereby it is as follows to obtain secondary M3U8 file address:
http://gslb.bestvcdn.com/gslb/program/FDN/P1224900_13/HLSVodSer?vice.m3u8？_mdCode＝2755809&_cdnCode＝BTV&_type＝1&_rCode＝TerOu?t_10180&_userId＝020341000003789&_categoryPath＝SMG_LG,SMG_LG_TV,&_adPositionId＝01001000&_adCategorySource＝0&token_mod＝&_clie?nt＝103&taskID＝&_cms＝&_flag＝.m3u8
Then, this second device 102, according to this secondary M3U8 file address, obtains corresponding secondary M3U8 file, and document analysis thes contents are as follows:
#EXTM3U
#EXT-X-TARGETDURATION:10
#EXT-X-MEDIA-SEQUENCE:1
#EXTINF:10,1
1300/F2755736_001.mp4.0.to.ts？_client＝103&taskID＝&_cms＝#EXTINF:10,2
1300/F2755736_001.mp4.10.to.ts？_client＝103&taskID＝&_cms＝#EXTINF:10,3
1300/F2755736_001.mp4.20.to.ts？_client＝103&taskID＝&_cms＝#EXTINF:10,4
1300/F2755736_001.mp4.30.to.ts？_client＝103&taskID＝&_cms＝#EXTINF:10,5
1300/F2755736_001.mp4.40.to.ts？_client＝103&taskID＝&_cms＝#EXTINF:10,6
。。。。
#EXT-X-ENDLIST
Those skilled in the art will be understood that the mode of above-mentioned definite secondary M3U8 is only for giving an example; the mode of other definite secondary M3U8 existing or that may occur is from now on as applicable to the present invention; also should be included in protection range of the present invention, and with way of reference, be contained in this at this.
The 3rd device 103 is downloaded to CDN service node by described request program information from CDN source node according to described secondary M3U8 file, to meet follow-up relevant order request.Particularly, the 3rd device 103 is according to the determined secondary M3U8 of the second device 102 file, according to the file content of this secondary M3U8 file, or further combined with the corresponding base address of one-level M3U8 file, this request program information is downloaded to CDN service node from CDN source node, to meet follow-up relevant order request.
At this, should " request program information " be not the actual order request based on user, but be downloaded in advance CDN service node, to meet the follow-up order request of user.
Preferably, the described the 3rd installs 103 according to described secondary M3U8 file, and by the corresponding base address of described one-level M3U8 file, determines corresponding section file address; According to described section file address, described request program information is downloaded to CDN service node from CDN source node, to meet follow-up relevant order request.
Particularly, the 3rd device 103 is according to the determined secondary M3U8 of the second device 102 file, and by the corresponding base address of the determined one-level M3U8 file of first device 101, determine corresponding section file address, as being spliced into actual section file .ts address according to original base address; Subsequently, the 3rd device 103 is according to described section file address, described request program information is downloaded to CDN service node from CDN source node, as progressively this request program information being downloaded to CDN service node from CDN source node according to number of slices in this secondary M3U8 file, to meet follow-up relevant order request.
Connect example, the 3rd device 103, according to secondary M3U8 file content, is spliced into actual section file .ts address according to original base address as follows:
http://gslb.bestvcdn.com/gslb/program/FDN/P1224900_13/1300/F2755736_001.mp4.0.to.ts？_client＝103&taskID＝&_cms＝
At this, the index that has comprised each section in secondary M3U8 file.
The 3rd device 103, according to all section index, is progressively downloaded to CDN service node by each section, to meet follow-up relevant order request.
Those skilled in the art will be understood that the mode of above-mentioned download program request programme information is only for giving an example; the mode of other download program request programme informations existing or that may occur is from now on as applicable to the present invention; also should be included in protection range of the present invention, and with way of reference, be contained in this at this.
Preferably, between each device of equipment 1, be constant work.Particularly, first device 101, according to request program information to be looked ahead, is determined corresponding one-level M3U8 file; The second device 102 is determined corresponding secondary M3U8 file according to described one-level M3U8 file; The 3rd device 103 is downloaded to CDN service node by described request program information from CDN source node according to described secondary M3U8 file, to meet follow-up relevant order request.At this, it will be understood by those skilled in the art that each device that " continuing " refer to equipment 1, respectively according to the mode of operation requirement of setting or adjust in real time, determines firsts and seconds M3U8 file, downloads program request programme information.
At this, equipment 1 is according to request program information to be looked ahead, determine corresponding one-level M3U8 file, and then determine corresponding secondary M3U8 file according to this one-level M3U8 file, according to this secondary M3U8 file, this request program information is downloaded to CDN service node from CDN source node again, to meet follow-up relevant order request, improved bandwidth resources utilance, and improved user's programming access experience.When the programme information of the latest update of Set Top Box access edge C DN service node, this programme information is edge C DN service node Already in, without Hui Yuan, to central CDN service node, improved program request efficiency, reduced user and watched taking of program peak Shi Hui source bandwidth.
Preferably, equipment 1 also comprises the 4th device (not shown), and first device comprises the one one unit (not shown) and the one or two unit (not shown).Wherein, the 4th device detects the trigger condition that whether meets the request program information of looking ahead; Request program information to be looked ahead, when meeting described trigger condition, is determined in Unit the 1 of first device 101; Corresponding one-level M3U8 file, according to described request program information, is determined in Unit the or two.
Particularly, the 4th device for example, by detecting the construction situation of CDN service node, detects the bandwidth availability ratio of CDN network, or, by detecting the modes such as program updating information, detect the trigger condition that whether meets the request program information of looking ahead.When meeting this trigger condition, request program information to be looked ahead is determined in Unit the 1 of first device 101, for example, from the assigned address of third party device, read specific file, to obtain request program information to be looked ahead, as " temperature content program monofile " or " the more programme excel form document of fresh content " etc.; Subsequently, Unit the one or two of this first device 101 is according to the one one determined request program information in unit, determine corresponding one-level M3U8 file, as in conjunction with this request program information to be looked ahead and corresponding one-level M3U8 file address thereof, determine corresponding one-level M3U8 file.
More preferably, described trigger condition comprises following at least any one:
New CDN service node construction completes;
The bandwidth availability ratio of CDN network is lower than bandwidth availability ratio threshold value;
Program updating information meets upgrades threshold value requirement.
Particularly, when new CDN service node construction completes, the 4th device judgement meets trigger condition, and first device 101, according to request program information to be looked ahead, is determined corresponding one-level M3U8 file; The second device 102 is determined corresponding secondary M3U8 file according to described one-level M3U8 file; The 3rd device 103 is downloaded to this new CDN service node by described request program information from CDN source node according to described secondary M3U8 file, to meet follow-up relevant order request.
At this, after new CDN service node construction completes, pre-loaded request program information necessarily, thus respond better user's video access request.
Trigger condition also comprises that the bandwidth availability ratio of CDN network is lower than bandwidth availability ratio threshold value, for example, He operator platform has docked, before operator does not distribute telephone numbers or when small-scale distributing telephone numbers, the utilance of bandwidth is extremely low, well below bandwidth availability ratio threshold value; And for example, user sees that TV is all generally time segment, normally see the peak period of TV 6 o'clock to 10 o'clock evening, other times, particularly at 0 in evening are the low ebb phases of seeing TV to 6 of mornings, in peak period, can produce a large amount of Hui Yuan, very high to the utilance of bandwidth, and in the low ebb phase, bandwidth is substantially idle.The bandwidth availability ratio that CDN network detected when the 4th device is during lower than bandwidth availability ratio threshold value, and judgement meets this trigger condition, and follow up device or unit continue to carry out subsequent operation.
At this, bandwidth availability ratio threshold value is for judging that whether the bandwidth availability ratio of CDN network is too low, and its value can be systemic presupposition, also can adjust according to actual conditions or user's expectation.
At this, when idle periods equiband utilance is lower, carry out looking ahead of IP Information On Demand, thereby improve bandwidth availability ratio, also avoid affecting user's normal access request.
Trigger condition also comprises that program updating information meets the requirement of renewal threshold value, for example, program updating information meets certain update cycle duration threshold value or certain program capacity threshold, when the 4th device detects the requirement of the satisfied renewal of program updating information threshold value, judgement meets this trigger condition, and follow up device or unit continue to carry out subsequent operation, for example, the request program information of renewal is downloaded to CDN service node from CDN source node, to meet follow-up relevant order request.
At this, upgrade threshold value for judging whether the programme information of renewal to be downloaded to CDN service node, this renewal threshold value for example comprises update cycle duration threshold value or program capacity threshold, and its value can be systemic presupposition, also can adjust according to actual conditions or user's expectation.
At this, when program updating information meets the requirement of renewal threshold value, download the programme information of this renewal to CDN service node, thereby respond better user's video access request.
Those skilled in the art will be understood that above-mentioned trigger condition is only for giving an example, and other trigger conditions existing or that may occur from now on, as applicable to the present invention, also should be included in protection range of the present invention, and with way of reference, are contained in this at this.
Preferably, described trigger condition comprises that new CDN service node construction completes; Wherein, described Unit the 1 is when meeting described trigger condition, using the program that meets predetermined heat degree threshold as request program information to be looked ahead; Wherein, described the 3rd device 103 is downloaded to described new CDN service node by described request program information from CDN source node according to described secondary M3U8 file, to meet follow-up relevant order request.
Particularly, when new CDN service node construction completes, the 4th device detects the construction situation of this service node, and judgement meets trigger condition; Subsequently, Unit the 1 is using the program that meets predetermined heat degree threshold as request program information to be looked ahead, for example, for the CDN service node newly building up, using temperature rank at front 20% temperature program as request program information to be looked ahead; Then, corresponding one-level M3U8 file, according to this request program information, is determined in Unit the or two; The second device 102 is determined corresponding secondary M3U8 file according to this one-level M3U8 file; Subsequently, the 3rd device 103 is downloaded to this new CDN service node by the programme content of these temperature programs from CDN source node according to this secondary M3U8 file, to meet follow-up relevant order request.
At this, predetermined heat degree threshold is for judging using which program as request program information to be looked ahead, for example, in programme information storehouse, according to historical statistics record and intellectual analysis, using temperature rank at front 20% program as request program information to be looked ahead.The value of this predetermined heat degree threshold can be systemic presupposition, also can adjust according to actual conditions or user's expectation.
At this, when the programme information of the latest update of Set Top Box access edge C DN service node, this programme information is edge C DN service node Already in, without Hui Yuan to central CDN service node, improved program request efficiency, reduced user and watched taking of program peak Shi Hui source bandwidth.
At this, when completing with the system docking of Virtual network operator, not yet distribute telephone numbers or distribute telephone numbers the stage on a small scale, or, the idle periods completing in docking, equipment 1 obtains the program of predetermined heat degree threshold to new CDN service node, to meet follow-up relevant order request.
Preferably, described trigger condition comprises that program updating information meets the requirement of renewal threshold value; Wherein, this equipment 1 also comprises the 5th device (not shown).The 5th device determine with described in the corresponding target CDN service node of request program information to be looked ahead; Wherein, described the 3rd device 103 is downloaded to described target CDN service node by described request program information from CDN source node according to described secondary M3U8 file, to meet follow-up relevant order request.
Particularly, when meeting, program updating information upgrades threshold value requirement, as, program updating information meets certain update cycle duration threshold value or certain program capacity threshold, and the 4th device judgement meets trigger condition; First device 101 is using the programme information of this renewal as request program information to be looked ahead, and definite corresponding one-level M3U8 file; The second device 102 is determined corresponding secondary M3U8 file according to this one-level M3U8 file; The 5th device is determined the request program information to be looked ahead with this, that is, the programme information of this renewal, corresponding target CDN service node, as, the CDN service node of the programme information before existence is upgraded; Subsequently, described the 3rd device 103 is downloaded to this target CDN service node by the programme information of this renewal from CDN source node according to this secondary M3U8 file, to meet follow-up relevant order request.
At this, the CDN service node of the programme information before program updating information is taken in advance and exist upgrades, rather than CDN service node arbitrarily, further meet user's video request program demand.
When the programme information of the latest update of Set Top Box access edge C DN service node, this programme information is edge C DN service node Already in, without Hui Yuan, to central CDN service node, has improved program request efficiency.
More preferably, the corresponding periodicity time threshold of described program updating information is lower than time update cycle of EPG in described CDN.
Particularly, when there is renewal in programme information, need to periodically judge whether programme information exists renewal, this time threshold periodically judging is the corresponding periodicity time threshold of program updating information, and this periodicity time threshold is lower than time update cycle of EPG in this CDN.
For example, the 4th device is resolved by script, periodically judge whether the Excel file of assigned catalogue exists renewal, it is short to the time of EPG with the synchronous more new metadata of master/slave mode that this periodicity time threshold defines relative OTT CMS, as being arranged to 30s, like this, equipment 1 programme information of taking renewal more Zao than EPG.
At this, equipment 1 in the customary content of upgrading of cycle (as weekly) before EPG upgrades, or, late into the night every day again or return low ebb phase of source bandwidth availability ratio, the programme information that upgrades of looking ahead is to CDN service node, to meet follow-up relevant order request.
Fig. 2 illustrates a kind of method flow diagram for the request program information of looking ahead at CDN network according to a further aspect of the present invention.
In step S201, equipment 1, according to request program information to be looked ahead, is determined corresponding one-level M3U8 file.Particularly, in step S201, equipment 1 for example reads specific file from the assigned address of third party device, to obtain request program information to be looked ahead, as " temperature content program monofile " or " the more programme excel form document of fresh content " etc.; Subsequently, equipment 1, according to this request program information to be looked ahead and corresponding one-level M3U8 file address thereof, is determined corresponding one-level M3U8 file.
For example, the temperature data of network analysis user on-demand content, determine temperature content, and temperature content program forms data is extracted and is organized into Excel file, and then, this temperature content program monofile is put in the catalogue of appointment.In step S201, equipment 1 obtains this temperature content program monofile in the catalogue of this appointment, by resolving this programme file, obtains request program information to be looked ahead, as information such as programme content codes; Subsequently, equipment 1, according to this programme content code and corresponding one-level M3U8 file address, is determined corresponding one-level M3U8 file.
Those skilled in the art will be understood that the mode of above-mentioned definite one-level M3U8 is only for giving an example; the mode of other definite one-level M3U8 existing or that may occur is from now on as applicable to the present invention; also should be included in protection range of the present invention, and with way of reference, be contained in this at this.
In step S202, equipment 1 is determined corresponding secondary M3U8 file according to described one-level M3U8 file.Particularly, in step S202, equipment 1 is according to determined one-level M3U8 file address in step S201, obtain corresponding base address, then in conjunction with the content of this one-level M3U8 file, determine corresponding secondary M3U8 file address, thereby obtain this secondary M3U8 file
Connect example, suppose in step S201, equipment 1, according to programme content code and corresponding one-level M3U8 file address, is determined corresponding one-level M3U8 file, and one-level M3U8 document analysis result is as follows:
#EXTM3U
#EXT-X-STREAM-INF:PROGRAM-ID＝1,BANDWIDTH＝700000
HLSVodService.m3u8？_mdCode＝2755810&_cdnCode＝BTV&_type＝1&_rCode＝TerOut_10180&_userId＝020341000003789&_categoryPath＝SM?G_LG,SMG_LG_TV,&_adPositionId＝01001000&_adCategorySource＝0&to?ken_mod＝&_client＝103&taskID＝&_cms＝&_flag＝.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID＝1,BANDWIDTH＝1300000
HLSVodService.m3u8？_mdCode＝2755809&_cdnCode＝BTV&_type＝1&_rCode＝TerOut_10180&_userId＝020341000003789&_categoryPath＝SM?G_LG,SMG_LG_TV,&_adPositionId＝01001000&_adCategorySource＝0&to?ken_mod＝&_client＝103&taskID＝&_cms＝&_flag＝.m3u8
In step S202, equipment 1 is as follows according to acquisition base address, one-level M3U8 file address:
http://gslb.bestvcdn.com/gslb/program/FDN/P1224900_13/
Subsequently, in step S202, equipment 1 splices one-level M3U8 file content on above-mentioned base address, thereby it is as follows to obtain secondary M3U8 file address:
http://gslb.bestvcdn.com/gslb/program/FDN/P1224900_13/HLSVodSer?vice.m3u8？_mdCode＝2755809&_cdnCode＝BTV&_type＝1&_rCode＝TerOu?t_10180&_userId＝020341000003789&_categoryPath＝SMG_LG,SMG_LG_TV,&_adPositionId＝01001000&_adCategorySource＝0&token_mod＝&_clie?nt＝103&taskID＝&_cms＝&_flag＝.m3u8
Then, in step S202, equipment 1, according to this secondary M3U8 file address, obtains corresponding secondary M3U8 file, and document analysis thes contents are as follows:
#EXTM3U
#EXT-X-TARGETDURATION:10
#EXT-X-MEDIA-SEQUENCE:1
#EXTINF:10,1
1300/F2755736_001.mp4.0.to.ts？_client＝103&taskID＝&_cms＝#EXTINF:10,2
1300/F2755736_001.mp4.10.to.ts？_client＝103&taskID＝&_cms＝#EXTINF:10,3
1300/F2755736_001.mp4.20.to.ts？_client＝103&taskID＝&_cms＝#EXTINF:10,4
1300/F2755736_001.mp4.30.to.ts？_client＝103&taskID＝&_cms＝#EXTINF:10,5
1300/F2755736_001.mp4.40.to.ts？_client＝103&taskID＝&_cms＝#EXTINF:10,6
。。。。
#EXT-X-ENDLIST
Those skilled in the art will be understood that the mode of above-mentioned definite secondary M3U8 is only for giving an example; the mode of other definite secondary M3U8 existing or that may occur is from now on as applicable to the present invention; also should be included in protection range of the present invention, and with way of reference, be contained in this at this.
In step S203, equipment 1 is downloaded to CDN service node by described request program information from CDN source node according to described secondary M3U8 file, to meet follow-up relevant order request.Particularly, in step S203, equipment 1 is according to determined secondary M3U8 file in step S202, according to the file content of this secondary M3U8 file, or further combined with the corresponding base address of one-level M3U8 file, this request program information is downloaded to CDN service node from CDN source node, to meet follow-up relevant order request.
At this, should " request program information " be not the actual order request based on user, but be downloaded in advance CDN service node, to meet the follow-up order request of user.
Preferably, in step S203, equipment 1 is according to described secondary M3U8 file, and by the corresponding base address of described one-level M3U8 file, determines corresponding section file address; According to described section file address, described request program information is downloaded to CDN service node from CDN source node, to meet follow-up relevant order request.
Particularly, in step S203, equipment 1 is according to determined secondary M3U8 file in step S202, and by the corresponding base address of determined one-level M3U8 file in step S201, determine corresponding section file address, as being spliced into actual section file .ts address according to original base address; Subsequently, in step S203, equipment 1 is according to described section file address, described request program information is downloaded to CDN service node from CDN source node, as progressively this request program information being downloaded to CDN service node from CDN source node according to number of slices in this secondary M3U8 file, to meet follow-up relevant order request.
Connect example, in step S203, equipment 1, according to secondary M3U8 file content, is spliced into actual section file .ts address according to original base address as follows:
http://gslb.bestvcdn.com/gslb/program/FDN/P1224900_13/1300/F2755736_001.mp4.0.to.ts？_client＝103&taskID＝&_cms＝
At this, the index that has comprised each section in secondary M3U8 file.
In step S203, equipment 1, according to all section index, is progressively downloaded to CDN service node by each section, to meet follow-up relevant order request.
Those skilled in the art will be understood that the mode of above-mentioned download program request programme information is only for giving an example; the mode of other download program request programme informations existing or that may occur is from now on as applicable to the present invention; also should be included in protection range of the present invention, and with way of reference, be contained in this at this.
Preferably, between each step of equipment 1, be constant work.Particularly, in step S201, equipment 1, according to request program information to be looked ahead, is determined corresponding one-level M3U8 file; In step S202, equipment 1 is determined corresponding secondary M3U8 file according to described one-level M3U8 file; In step S203, equipment 1 is downloaded to CDN service node by described request program information from CDN source node according to described secondary M3U8 file, to meet follow-up relevant order request.At this, it will be understood by those skilled in the art that each step that " continuing " refer to equipment 1, respectively according to the mode of operation requirement of setting or adjust in real time, determines firsts and seconds M3U8 file, downloads program request programme information.
At this, equipment 1 is according to request program information to be looked ahead, determine corresponding one-level M3U8 file, and then determine corresponding secondary M3U8 file according to this one-level M3U8 file, according to this secondary M3U8 file, this request program information is downloaded to CDN service node from CDN source node again, to meet follow-up relevant order request, improved bandwidth resources utilance, and improved user's programming access experience.When the programme information of the latest update of Set Top Box access edge C DN service node, this programme information is edge C DN service node Already in, without Hui Yuan, to central CDN service node, improved program request efficiency, reduced user and watched taking of program peak Shi Hui source bandwidth.
Preferably, the method also comprises step S204 (not shown), and step S201 comprises sub-step S201a (not shown) and sub-step S201b (not shown).Wherein, in step S204, equipment 1 detects the trigger condition that whether meets the request program information of looking ahead; In sub-step S201a, equipment 1, when meeting described trigger condition, is determined request program information to be looked ahead; In sub-step S201b, equipment 1, according to described request program information, is determined corresponding one-level M3U8 file.
Particularly, in step S204, equipment 1 for example, by detecting the construction situation of CDN service node, detects the bandwidth availability ratio of CDN network, or, by detecting the modes such as program updating information, detect the trigger condition that whether meets the request program information of looking ahead.When meeting this trigger condition, in sub-step S201a, equipment 1 is determined request program information to be looked ahead, for example, from the assigned address of third party device, read specific file, to obtain request program information to be looked ahead, as " temperature content program monofile " or " the more programme excel form document of fresh content " etc.; Subsequently, in sub-step S201b, equipment 1, according to determined request program information in sub-step S201a, is determined corresponding one-level M3U8 file, as in conjunction with this request program information to be looked ahead and corresponding one-level M3U8 file address thereof, determine corresponding one-level M3U8 file.
More preferably, described trigger condition comprises following at least any one:
New CDN service node construction completes;
The bandwidth availability ratio of CDN network is lower than bandwidth availability ratio threshold value;
Program updating information meets upgrades threshold value requirement.
Particularly, when new CDN service node construction completes, in step S204, equipment 1 judgement meets trigger condition, and in step S201, equipment 1, according to request program information to be looked ahead, is determined corresponding one-level M3U8 file; In step S202, equipment 1 is determined corresponding secondary M3U8 file according to described one-level M3U8 file; In step S203, equipment 1 is downloaded to this new CDN service node by described request program information from CDN source node according to described secondary M3U8 file, to meet follow-up relevant order request.
At this, after new CDN service node construction completes, pre-loaded request program information necessarily, thus respond better user's video access request.
Trigger condition also comprises that the bandwidth availability ratio of CDN network is lower than bandwidth availability ratio threshold value, for example, He operator platform has docked, before operator does not distribute telephone numbers or when small-scale distributing telephone numbers, the utilance of bandwidth is extremely low, well below bandwidth availability ratio threshold value; And for example, user sees that TV is all generally time segment, normally see the peak period of TV 6 o'clock to 10 o'clock evening, other times, particularly at 0 in evening are the low ebb phases of seeing TV to 6 of mornings, in peak period, can produce a large amount of Hui Yuan, very high to the utilance of bandwidth, and in the low ebb phase, bandwidth is substantially idle.When in step S204, the bandwidth availability ratio that equipment 1 detects CDN network is during lower than bandwidth availability ratio threshold value, and judgement meets this trigger condition, and follow up device step or sub-step continue to carry out subsequent operation.
At this, bandwidth availability ratio threshold value is for judging that whether the bandwidth availability ratio of CDN network is too low, and its value can be systemic presupposition, also can adjust according to actual conditions or user's expectation.
At this, when idle periods equiband utilance is lower, carry out looking ahead of IP Information On Demand, thereby improve bandwidth availability ratio, also avoid affecting user's normal access request.
Trigger condition also comprises that program updating information meets the requirement of renewal threshold value, for example, program updating information meets certain update cycle duration threshold value or certain program capacity threshold, when in step S204, equipment 1 detects program updating information and meets while upgrading threshold value requirement, and judgement meets this trigger condition, subsequent step or sub-step continue to carry out subsequent operation, for example, the request program information of renewal is downloaded to CDN service node from CDN source node, to meet follow-up relevant order request.
At this, upgrade threshold value for judging whether the programme information of renewal to be downloaded to CDN service node, this renewal threshold value for example comprises update cycle duration threshold value or program capacity threshold, and its value can be systemic presupposition, also can adjust according to actual conditions or user's expectation.
At this, when program updating information meets the requirement of renewal threshold value, download the programme information of this renewal to CDN service node, thereby respond better user's video access request.
Those skilled in the art will be understood that above-mentioned trigger condition is only for giving an example, and other trigger conditions existing or that may occur from now on, as applicable to the present invention, also should be included in protection range of the present invention, and with way of reference, are contained in this at this.
Preferably, described trigger condition comprises that new CDN service node construction completes; Wherein, in sub-step S201a, equipment 1 is when meeting described trigger condition, using the program that meets predetermined heat degree threshold as request program information to be looked ahead; Wherein, in step S203, equipment 1 is downloaded to described new CDN service node by described request program information from CDN source node according to described secondary M3U8 file, to meet follow-up relevant order request.
Particularly, when new CDN service node construction completes, in step S204, equipment 1 detects the construction situation of this service node, and judgement meets trigger condition; Subsequently, in sub-step S201a, equipment 1 is using the program that meets predetermined heat degree threshold as request program information to be looked ahead, for example, for the CDN service node newly building up, using temperature rank at front 20% temperature program as request program information to be looked ahead; Then,, in sub-step S201b, equipment 1, according to this request program information, is determined corresponding one-level M3U8 file; In step S202, equipment 1 is determined corresponding secondary M3U8 file according to this one-level M3U8 file; Subsequently, in step S203, equipment 1 is downloaded to this new CDN service node by the programme content of these temperature programs from CDN source node according to this secondary M3U8 file, to meet follow-up relevant order request.
At this, predetermined heat degree threshold is for judging using which program as request program information to be looked ahead, for example, in programme information storehouse, according to historical statistics record and intellectual analysis, using temperature rank at front 20% program as request program information to be looked ahead.The value of this predetermined heat degree threshold can be systemic presupposition, also can adjust according to actual conditions or user's expectation.
At this, when the programme information of the latest update of Set Top Box access edge C DN service node, this programme information is edge C DN service node Already in, without Hui Yuan to central CDN service node, improved program request efficiency, reduced user and watched taking of program peak Shi Hui source bandwidth.
At this, when completing with the system docking of Virtual network operator, not yet distribute telephone numbers or distribute telephone numbers the stage on a small scale, or, the idle periods completing in docking, equipment 1 obtains the program of predetermined heat degree threshold to new CDN service node, to meet follow-up relevant order request.
Preferably, described trigger condition comprises that program updating information meets the requirement of renewal threshold value; Wherein, the method also comprises step S205 (not shown).In step S205, equipment 1 determine with described in the corresponding target CDN service node of request program information to be looked ahead; Wherein, in step S203, equipment 1 is downloaded to described target CDN service node by described request program information from CDN source node according to described secondary M3U8 file, to meet follow-up relevant order request.
Particularly, when meeting, program updating information upgrades threshold value requirement, as, program updating information meets certain update cycle duration threshold value or certain program capacity threshold, and in step S204, equipment 1 judgement meets trigger condition; In step S201, equipment 1 is using the programme information of this renewal as request program information to be looked ahead, and definite corresponding one-level M3U8 file; In step S202, equipment 1 is determined corresponding secondary M3U8 file according to this one-level M3U8 file; In step S205, equipment 1 is determined the request program information to be looked ahead with this, that is, the programme information of this renewal, corresponding target CDN service node, as, the CDN service node of the programme information before existence is upgraded; Subsequently, in step S203, equipment 1 is downloaded to this target CDN service node by the programme information of this renewal from CDN source node according to this secondary M3U8 file, to meet follow-up relevant order request.
At this, the CDN service node of the programme information before program updating information is taken in advance and exist upgrades, rather than CDN service node arbitrarily, further meet user's video request program demand.
When the programme information of the latest update of Set Top Box access edge C DN service node, this programme information is edge C DN service node Already in, without Hui Yuan, to central CDN service node, has improved program request efficiency.
More preferably, the corresponding periodicity time threshold of described program updating information is lower than time update cycle of EPG in described CDN.
Particularly, when there is renewal in programme information, need to periodically judge whether programme information exists renewal, this time threshold periodically judging is the corresponding periodicity time threshold of program updating information, and this periodicity time threshold is lower than time update cycle of EPG in this CDN.
For example, in step S204, equipment 1 is resolved by script, periodically judge whether the Excel file of assigned catalogue exists renewal, it is short to the time of EPG with the synchronous more new metadata of master/slave mode that this periodicity time threshold defines relative OTT CMS, as being arranged to 30s, like this, the programme information of taking renewal that equipment 1 is more Zao than EPG.
At this, equipment 1 in the customary content of upgrading of cycle (as weekly) before EPG upgrades, or, late into the night every day again or return low ebb phase of source bandwidth availability ratio, the programme information that upgrades of looking ahead is to CDN service node, to meet follow-up relevant order request.
It should be noted that the present invention can be implemented in the assembly of software and/or software and hardware, for example, can adopt application-specific integrated circuit (ASIC) (ASIC), general object computer or any other similar hardware device to realize.In one embodiment, software program of the present invention can carry out to realize step mentioned above or function by processor.Similarly, software program of the present invention (comprising relevant data structure) can be stored in computer readable recording medium storing program for performing, for example, and RAM memory, magnetic or CD-ROM driver or floppy disc and similar devices.In addition, steps more of the present invention or function can adopt hardware to realize, for example, thereby as coordinate the circuit of carrying out each step or function with processor.
In addition, a part of the present invention can be applied to computer program, and for example computer program instructions, when it is carried out by computer, by the operation of this computer, can call or provide the method according to this invention and/or technical scheme.And call the program command of method of the present invention, may be stored in fixing or movably in recording medium, and/or be transmitted by the data flow in broadcast or other signal bearing medias, and/or be stored in according in the working storage of the computer equipment of described program command operation.At this, comprise according to one embodiment of present invention a device, this device comprises for storing the memory of computer program instructions and for the processor of execution of program instructions, wherein, when this computer program instructions is carried out by this processor, trigger this device and move based on aforementioned according to the method for a plurality of embodiment of the present invention and/or technical scheme.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and in the situation that not deviating from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims rather than above-mentioned explanation, is therefore intended to be included in the present invention dropping on the implication that is equal to important document of claim and all changes in scope.Any Reference numeral in claim should be considered as limiting related claim.In addition, obviously other unit or step do not got rid of in " comprising " word, and odd number is not got rid of plural number.A plurality of unit of stating in device claim or device also can be realized by software or hardware by a unit or device.The first, the second word such as grade is used for representing title, and does not represent any specific order.
Claims (14)
1. for a method for the request program information of looking ahead at CDN network, wherein, the method comprises:
A, according to request program information to be looked ahead, determines corresponding one-level M3U8 file;
B determines corresponding secondary M3U8 file according to described one-level M3U8 file;
C is downloaded to CDN service node by described request program information from CDN source node according to described secondary M3U8 file, to meet follow-up relevant order request.
2. method according to claim 1, wherein, the method also comprises:
Detect the trigger condition that whether meets the request program information of looking ahead;
Wherein, described step a comprises:
A1, when meeting described trigger condition, determines request program information to be looked ahead;
According to described request program information, determine corresponding one-level M3U8 file.
3. method according to claim 2, wherein, described trigger condition comprises following at least any one:
New CDN service node construction completes;
The bandwidth availability ratio of CDN network is lower than bandwidth availability ratio threshold value;
Program updating information meets upgrades threshold value requirement.
4. method according to claim 3, wherein, described trigger condition comprises that new CDN service node construction completes;
Wherein, described step a1 comprises:
When meeting described trigger condition, using the program that meets predetermined heat degree threshold as request program information to be looked ahead;
Wherein, described step c comprises:
According to described secondary M3U8 file, described request program information is downloaded to described new CDN service node from CDN source node, to meet follow-up relevant order request.
5. according to the method described in claim 3 or 4, wherein, described trigger condition comprises that program updating information meets the requirement of renewal threshold value;
Wherein, the method also comprises:
Determine with described in the corresponding target CDN service node of request program information to be looked ahead;
Wherein, described step c comprises:
According to described secondary M3U8 file, described request program information is downloaded to described target CDN service node from CDN source node, to meet follow-up relevant order request.
6. method according to claim 5, wherein, the corresponding periodicity time threshold of described program updating information is lower than time update cycle of EPG in described CDN.
7. according to the method described in any one in claim 1 to 6, wherein, described step c comprises:
According to described secondary M3U8 file, and by the corresponding base address of described one-level M3U8 file, determine corresponding section file address;
According to described section file address, described request program information is downloaded to CDN service node from CDN source node, to meet follow-up relevant order request.
8. for an equipment for the request program information of looking ahead at CDN network, wherein, this equipment comprises:
First device, for according to request program information to be looked ahead, determines corresponding one-level M3U8 file;
The second device, for determining corresponding secondary M3U8 file according to described one-level M3U8 file;
The 3rd device, for being downloaded to CDN service node by described request program information from CDN source node according to described secondary M3U8 file, to meet follow-up relevant order request.
9. equipment according to claim 8, wherein, this equipment also comprises:
The 4th device, meets the trigger condition of the request program information of looking ahead for detection of whether;
Wherein, described first device comprises:
Unit the 1, for when meeting described trigger condition, determines request program information to be looked ahead;
Unit the one or two, for according to described request program information, determines corresponding one-level M3U8 file.
10. equipment according to claim 9, wherein, described trigger condition comprises following at least any one:
New CDN service node construction completes;
The bandwidth availability ratio of CDN network is lower than bandwidth availability ratio threshold value;
Program updating information meets upgrades threshold value requirement.
11. equipment according to claim 10, wherein, described trigger condition comprises that new CDN service node construction completes;
Wherein, described Unit the 1 is used for:
When meeting described trigger condition, using the program that meets predetermined heat degree threshold as request program information to be looked ahead;
Wherein, described the 3rd device is used for:
According to described secondary M3U8 file, described request program information is downloaded to described new CDN service node from CDN source node, to meet follow-up relevant order request.
12. according to the equipment described in claim 10 or 11, and wherein, described trigger condition comprises that program updating information meets the requirement of renewal threshold value;
Wherein, this equipment also comprises:
The 5th device, for determine with described in the corresponding target CDN service node of request program information to be looked ahead;
Wherein, described the 3rd device is used for:
According to described secondary M3U8 file, described request program information is downloaded to described target CDN service node from CDN source node, to meet follow-up relevant order request.
13. equipment according to claim 12, wherein, the corresponding periodicity time threshold of described program updating information is lower than time update cycle of EPG in described CDN.
Equipment in 14. according to Claim 8 to 13 described in any one, wherein, described the 3rd device is used for:
According to described secondary M3U8 file, and by the corresponding base address of described one-level M3U8 file, determine corresponding section file address;
According to described section file address, described request program information is downloaded to CDN service node from CDN source node, to meet follow-up relevant order request.
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