CN104333781A - Method and device for pre-acquiring live program information from CDN (Content Delivery Network) - Google Patents
Method and device for pre-acquiring live program information from CDN (Content Delivery Network) Download PDFInfo
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- CN104333781A CN104333781A CN201410606658.7A CN201410606658A CN104333781A CN 104333781 A CN104333781 A CN 104333781A CN 201410606658 A CN201410606658 A CN 201410606658A CN 104333781 A CN104333781 A CN 104333781A
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- programme televised
- televised live
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/239—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests
- H04N21/2393—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests involving handling client requests
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention aims at providing method and device for pre-acquiring live program information from CDN (Content Delivery Network). The method comprises the following steps: acquiring a second two-stage M3U8 file and a third two-stage M3U8 file corresponding to a live program, wherein the third two-stage M3U8 file is determined based on the second two-stage M3U8 file and the live delay information corresponding to the live program; acquiring the live program information from the live program, corresponding to the second two-stage M3U8 file and the third two-stage M3U8 file, so as to meet the subsequent related live requests. Compared with the prior art, the method has the advantages that the (delayed) live program information is pre-obtained through an one-stage M3U8 file and a two-stage M3U8 file, and thus, the bandwidth resource utilization rate can be raised, and the program access experience of a user can be improved; the pre-obtaining method can be used for effectively solving the problem of network jittering, in order to ensure the live program quality for a user.
Description
Technical field
The present invention relates to computer realm, particularly relate to a kind of technology for programme televised live information of looking ahead in CDN.
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, the integrated prefetch module of the CDN node of serving by providing user the programme content fetched in advance in advance in the mode of Hui Yuan in the CDN node of source.
Existing IPTV is live transmits by routing multicast mode that it is live, and the guarantee of user's service QoS is by meeting the constraint in IPTV private network broadband.Internet television is live to be transmitted on public network by mode of unicast, and cannot by meeting its user's service QoS guarantee to public network broadband constrain.In the live of internet television and these two kinds of basic services of program request, live requirement of real-time is higher.In this case, ensure that user is to aobvious particularly important of the experience of live broadcast service by technological means.
Existing direct-seeding does not have pre-fetch function.Due to direct broadcast band Limited Number, when user base number is larger, can supposing that all direct broadcast bands all can be watched by user, again because live broadcast service is real-time, needing to obtain live content by going back to source in real time.Therefore, it is very high for accessing the requirement of live broadcast service peak period to time source bandwidth user, once there is the experience that network jitter all can have influence on user.
Summary of the invention
The object of this invention is to provide a kind of method and apparatus of programme televised live information of looking ahead in CDN.
According to an aspect of the present invention, provide a kind of in the method for first network equipment end for programme televised live information of looking ahead in CDN, wherein, the method comprises:
Obtain the second secondary M3U8 file corresponding to programme televised live and the 3rd secondary M3U8 file, wherein, described 3rd secondary M3U8 file is determined based on described second secondary M3U8 file and live delayed data corresponding to described programme televised live;
Obtain programme televised live information corresponding with described second secondary M3U8 file and described 3rd secondary M3U8 file in described programme televised live, to meet follow-up relevant live request.
According to a further aspect in the invention, additionally provide a kind of in the method for second network equipment end for programme televised live information of looking ahead in CDN, wherein, the method comprises:
Generate one-level M3U8 file, the first secondary M3U8 file and the second secondary M3U8 file corresponding to programme televised live;
Generate the 3rd secondary M3U8 file corresponding to described programme televised live, wherein, described 3rd secondary M3U8 file is determined based on described second secondary M3U8 file and live delayed data corresponding to described programme televised live.
According to another aspect of the invention, additionally provide a kind of first network equipment for programme televised live information of looking ahead in CDN, wherein, this first network equipment comprises:
First device, for obtaining the second secondary M3U8 file corresponding to programme televised live and the 3rd secondary M3U8 file, wherein, described 3rd secondary M3U8 file is determined based on described second secondary M3U8 file and live delayed data corresponding to described programme televised live;
3rd device, for obtaining programme televised live information corresponding with described second secondary M3U8 file and described 3rd secondary M3U8 file in described programme televised live, to meet follow-up relevant live request.
In accordance with a further aspect of the present invention, additionally provide a kind of second network equipment for programme televised live information of looking ahead in CDN, wherein, this second network equipment comprises:
Second device, for generating one-level M3U8 file, the first secondary M3U8 file and the second secondary M3U8 file corresponding to programme televised live;
4th device, for generating the 3rd secondary M3U8 file corresponding to described programme televised live, wherein, described 3rd secondary M3U8 file is determined based on described second secondary M3U8 file and live delayed data corresponding to described programme televised live.
In accordance with a further aspect of the present invention, additionally provide a kind of system for programme televised live information of looking ahead in CDN, wherein, this system comprises first network equipment as above, and second network equipment as above.
Compared with prior art, the present invention to be looked ahead (through time delay) programme televised live information by one-level M3U8 file and secondary M3U8 file, with improve bandwidth resources utilance and improve user programming access experience, the method of looking ahead effectively can tackle the shake of network, thus ensures user live broadcast service quality.
Further, the present invention, according to predetermined code check priority rule, obtains corresponding programme televised live information, further increases bandwidth resources utilance, and the programming access improving user is experienced.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 illustrates a kind of equipment schematic diagram for programme televised live information of looking ahead in CDN according to one aspect of the invention;
Fig. 2 illustrates a kind of equipment schematic diagram for programme televised live information of looking ahead in CDN according to a further aspect of the present invention;
Fig. 3 illustrates a kind of equipment schematic diagram for programme televised live information of looking ahead in CDN in accordance with a preferred embodiment of the present invention;
Fig. 4 illustrates a kind of method flow diagram for programme televised live information of looking ahead in CDN according to another aspect of the present invention;
Fig. 5 illustrates a kind of method flow diagram for programme televised live information of looking ahead in CDN according to another 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 the application one typically configuration, the equipment of terminal, service network and trusted party include one or more processor (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 permanent and impermanency, removable and non-removable media can be stored to realize information by any method or technology.Information can be computer-readable instruction, data structure, the module of program or other data.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 (RAM) of other types, 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, tape magnetic rigid disk stores or other magnetic storage apparatus or any other non-transmitting medium, can be used for storing the information can 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 programme televised live information of looking ahead in CDN according to one aspect of the invention.First network equipment 1 comprises first device 101 and the 3rd device 103.
Wherein, first device 101 is for obtaining the second secondary M3U8 file corresponding to programme televised live and the 3rd secondary M3U8 file, wherein, described 3rd secondary M3U8 file is determined based on described second secondary M3U8 file and live delayed data corresponding to described programme televised live.
Particularly, first device 101 such as reads specific file from the assigned address of third party device, to obtain the second secondary M3U8 file corresponding to programme televised live and the 3rd secondary M3U8 file, such as, from the assigned catalogue of second network equipment 2, obtain that this second network equipment 2 generates with the second secondary M3U8 file corresponding to programme televised live and the 3rd secondary M3U8 file.Wherein, the 3rd secondary M3U8 file is determined based on this second secondary M3U8 file and live delayed data corresponding to this programme televised live.
Such as, second network equipment 2 generates the second secondary M3U8 file, and with certain update cycle, such as using live delayed data corresponding to this programme televised live as the update cycle, as every 10 seconds, upgrade this second secondary M3U8 file, to generate the 3rd secondary M3U8 file.And this second secondary M3U8 file and the 3rd secondary M3U8 file are left in assigned catalogue.The first device 101 of this first network equipment 1, with certain acquisition cycle, as every 10 seconds, in the assigned catalogue of this second network equipment 2, obtains this second secondary M3U8 file and the 3rd secondary M3U8 file.
At this, generate when the second secondary M3U8 file is cut into slices to live signal, the update cycle of second network equipment 2 to this second secondary M3U8 file means that first network equipment 1 just can get the 3rd up-to-date secondary M3U8 file in this update cycle.At this, the update cycle can default setting with the value in the cycle of acquisition, also can adjust according to actual conditions.
At this, first network equipment 1 is such as performing the computing equipment of pre-fetch function, and it can independently exist, also can be mutually integrated with CDN service node.
At this, such as, be Rmnf.m3u8 by this second secondary M3U8 file designation.This file content is such as follows:
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:10
#EXT-X-MEDIA-SEQUENCE:139537137
#EXTINF:10,
2014032111/139537137.ts
#EXTINF:10,
2014032111/139537138.ts
#EXTINF:10,
2014032111/139537139.ts
...
Then the 3rd secondary M3U8 file is based on above-mentioned second secondary M3U8 file, using live delayed data corresponding to this programme televised live as the update cycle, upgrade and determine.In this instance, suppose that this live delayed data is 10 seconds, then the 3rd secondary M3U8 file content is as follows:
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:10
#EXT-X-MEDIA-SEQUENCE:139537138
#EXTINF:10,
2014032111/139537138.ts
#EXTINF:10,
2014032111/139537139.ts
#EXTINF:10,
2014032111/139537140.ts
...
Those skilled in the art will be understood that the mode of above-mentioned acquisition second secondary M3U8 file and the 3rd secondary M3U8 file is only citing; the mode of other acquisition second secondary M3U8 files that are existing or that may occur from now on and the 3rd secondary M3U8 file is as being applicable to the present invention; also within scope should being included in, and this is contained at this with way of reference.
3rd device 103 for obtaining programme televised live information corresponding with described second secondary M3U8 file and described 3rd secondary M3U8 file in described programme televised live, to meet follow-up relevant live request.
Particularly, the second secondary M3U8 file that 3rd device 103 obtains according to first device 101 and the 3rd secondary M3U8 file, the programme televised live information corresponding with this second secondary M3U8 file and the 3rd secondary M3U8 file is obtained, to meet follow-up relevant live request in programme televised live.Such as, to obtain the sample of direct broadcast band URL as follows for the 3rd device 103:
http://192.168.1.10/CCTV1//workflow1/2014032111/139537137.ts
Wherein, http: // 192.168.1.10/CCTV1/ is the base address that first network equipment 1 configures;
../workflow1/ be write the dead directory address depositing live content at the CDN service node of first network equipment 1;
2014032111/139537137.ts be the slice address that the second secondary M3U8 file or the 3rd secondary M3U8 file describe.
And then, the programme televised live information corresponding with described second secondary M3U8 file and described 3rd secondary M3U8 file got such as is deposited in the catalogue of this CDN service node by the 3rd device 103, if relevant live request is had consequently follow-up, to in the catalogue of this CDN service node, directly can obtain this programme televised live information.
Those skilled in the art will be understood that the mode of above-mentioned acquisition programme televised live information is only citing; the mode of other acquisition programme televised live information that are existing or that may occur from now on is as being applicable to the present invention; also within scope should being included in, and this is contained at this with way of reference.
Preferably, be constant work between each device of first network equipment 1.Particularly, first device 101 is for obtaining the second secondary M3U8 file corresponding to programme televised live and the 3rd secondary M3U8 file, wherein, described 3rd secondary M3U8 file is determined based on described second secondary M3U8 file and live delayed data corresponding to described programme televised live; 3rd device 103 for obtaining programme televised live information corresponding with described second secondary M3U8 file and described 3rd secondary M3U8 file in described programme televised live, to meet follow-up relevant live request.At this, it will be understood by those skilled in the art that " continuing " refers to that each device of first network equipment 1 is respectively according to the mode of operation requirement of setting or real-time adjustment, obtains the second secondary M3U8 file and the 3rd secondary M3U8 file, obtains corresponding programme televised live information.
At this, first network equipment 1 to be looked ahead (through time delay) programme televised live information by one-level M3U8 file and secondary M3U8 file, with improve bandwidth resources utilance and improve user programming access experience, the method of looking ahead effectively can tackle the shake of network, thus ensures user live broadcast service quality.
Preferably, this first network equipment 1 also comprises the 5th device (not shown).5th device is used for according to the live request about described programme televised live, described programme televised live information is provided to the broadcasting application corresponding to described live request.
Particularly, when user have submitted the live request about this programme televised live, the programme televised live information that the 3rd device 103 obtains, according to this live request, is provided to the broadcasting application corresponding to this live request by the 5th device.Such as, 3rd device 103 obtains the programme televised live information corresponding with this second secondary M3U8 file and the 3rd secondary M3U8 file in programme televised live, and by this programme televised live information stored in CDN service node, when user submits the live request about this programme televised live to, 5th device is from this CDN service node, this programme televised live information is provided to the broadcasting application corresponding to this live request, plays for this application.
Preferably, described 3rd device 103 comprises for obtaining programme televised live information corresponding with described second secondary M3U8 file and described 3rd secondary M3U8 file in described programme televised live:
According to predetermined code check priority rule, obtain programme televised live information corresponding with described second secondary M3U8 file and described 3rd secondary M3U8 file in described programme televised live.
Particularly, for same programme televised live, a process of looking ahead is had to work alone, may various code rate be there is in this programme televised live, after the live signal of this programme televised live is cut into slices, also different code checks may be there is in different programme televised live sections, 3rd device 103 can according to predetermined code check priority rule, obtain programme televised live information corresponding with described second secondary M3U8 file and described 3rd secondary M3U8 file in described programme televised live, such as, in a process, the programme televised live section that preferential download code check is lower, download the programme televised live section that code check is higher again, so that all code check sections of this programme televised live are taken to CDN service node in advance.Preferably, the 3rd device 103 according to dissimilar programme televised live, can also determine different code check priority rules, to obtain better user's experience.
At this, first network equipment 1, according to predetermined code check priority rule, obtains corresponding programme televised live information, further increases bandwidth resources utilance, and the programming access improving user is experienced.
Preferably, described live delayed data corresponds to the section duration information of described programme televised live.
Particularly, the 3rd secondary M3U8 file be based on the second secondary M3U8 file and live delayed data corresponding to programme televised live determined, this live delayed data corresponds to the section duration information of this programme televised live, as single or multiple section duration.Such as, this live delayed data corresponds to the single section duration of this programme televised live, and this single section duration is 10s, then the 3rd secondary M3U8 file is based on the second secondary M3U8 file, using 10s as the update cycle, upgrade and obtain.
Preferably, described first device 101, for when receiving live trigger message, obtains the second secondary M3U8 file corresponding to programme televised live and the 3rd secondary M3U8 file.
Particularly, when first device 101 receives live trigger message, such as, when receiving live signal or other trigger events, just from assigned catalogue, as from the Rmnf.m3u8 file directory of second network equipment 2, obtain the second secondary M3U8 file corresponding to programme televised live and the 3rd secondary M3U8 file.Such as, this first device 101 travels through Rmnf.m3u8 file directory in real time, once find there is Rmnf.m3u8 file update in this file directory, namely triggers and obtains operation, obtain this Rmnf.m3u8 file.
Those skilled in the art will be understood that above-mentioned live trigger message is only citing, and other live trigger messages that are existing or that may occur from now on, as being applicable to the present invention, within also should being included in scope, and are contained in this at this with way of reference.
Fig. 2 illustrates a kind of equipment schematic diagram for programme televised live information of looking ahead in CDN according to a further aspect of the present invention.Second network equipment 2 comprises the second device 202 and the 4th device 204.
Wherein, the second device 202 is for generating one-level M3U8 file, the first secondary M3U8 file and the second secondary M3U8 file corresponding to programme televised live.
Particularly, live broadcast system is after receiving live signal, transcoding operation is carried out to this live signal, subsequently, the operations such as this live broadcast system is cut into slices to the live signal after this transcoding again, encapsulation, second device 202, based on this, generates one-level M3U8 file, the first secondary M3U8 file and the second secondary M3U8 file corresponding to programme televised live.
At this, the file address sample of this one-level M3U8 file is as follows:
http://stream-js.bestvcdn.com/live/cctv4/live.m3u8？se＝jiangsu&ct＝2
The file sample of this one-level M3U8 file is as follows:
#EXTM3U
#EXT-X-STREAM-INF:PROGRAM-ID＝1,BANDWIDTH＝200000
workflow1/mnf.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID＝1,BANDWIDTH＝400000
workflow2/mnf.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID＝1,BANDWIDTH＝700000
workflow3/mnf.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID＝1,BANDWIDTH＝1300000
workflow4/mnf.m3u8
This second device 202 is also according to the file content of this one-level M3U8 file, and splice the file address of secondary M3U8 file, the file address sample of this secondary M3U8 file is as follows:
http://stream-js.bestvcdn.com/live/cctv4/workflow1/mnf.m3u8
The file sample of this secondary M3U8 file is as follows:
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:10
#EXT-X-MEDIA-SEQUENCE:139400839
#EXTINF:10,
2014030516/139400839.ts
#EXTINF:10,
2014030516/139400840.ts
#EXTINF:10,
2014030516/139400841.ts
Wherein, this secondary M3U8 file comprises the first secondary M3U8 file and the second secondary M3U8 file, this first secondary M3U8 file is the secondary M3U8 file being supplied to user's service, this second secondary M3U8 file is for being supplied to first network equipment 1, namely, perform the computing equipment of pre-fetch function, secondary M3U8 file.Second network equipment 2 generates the first secondary M3U8 file corresponding to this programme televised live and the second secondary M3U8 file simultaneously.
Such as, be mnf.m3u8 by this first secondary M3U8 file designation.This file content is such as follows:
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:10
#EXT-X-MEDIA-SEQUENCE:139537136
#EXTINF:10,
2014032111/139537136.ts
#EXTINF:10,
2014032111/139537137.ts
#EXTINF:10,
2014032111/139537138.ts
...
Such as, be Rmnf.m3u8 by this second secondary M3U8 file designation.This file content is such as follows:
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:10
#EXT-X-MEDIA-SEQUENCE:139537137
#EXTINF:10,
2014032111/139537137.ts
#EXTINF:10,
2014032111/139537138.ts
#EXTINF:10,
2014032111/139537139.ts
...
At this, mnf.m3u8 and Rmnf.m3u8 generates based on during live section simultaneously, does not have inheritance between two files.
At this, second network equipment 2 is such as generating the computing equipment of one-level, secondary M3U8 file, and it can independently exist, also can be mutually integrated with source server.
Those skilled in the art will be understood that; the mode of above-mentioned generation one-level M3U8 file, the first secondary M3U8 file and the second secondary M3U8 file is only citing; the mode of other generation one-level M3U8 file that is existing or that may occur from now on, the first secondary M3U8 file and the second secondary M3U8 files is as being applicable to the present invention; also within scope should being included in, and this is contained at this with way of reference.
4th device 204 is for generating the 3rd secondary M3U8 file corresponding to described programme televised live, and wherein, described 3rd secondary M3U8 file is determined based on described second secondary M3U8 file and live delayed data corresponding to described programme televised live.
Particularly, the second secondary M3U8 file that 4th device 204 generates according to the second device 202, by upgrading this second secondary M3U8 file, such as using live delayed data corresponding to this programme televised live as the update cycle, this second secondary M3U8 file is upgraded, generates the 3rd secondary M3U8 file corresponding to programme televised live.At this, generate when the second secondary M3U8 file is cut into slices to live signal, the update cycle of the 4th device 204 to this second secondary M3U8 file means that first network equipment 1 just can get the 3rd up-to-date secondary M3U8 file in this update cycle.At this, this update cycle such as default setting is 10s, or its value can adjust according to actual conditions.
At this, second network equipment 2 to be looked ahead (through time delay) programme televised live information by one-level M3U8 file and secondary M3U8 file, with improve bandwidth resources utilance and improve user programming access experience, the method of looking ahead effectively can tackle the shake of network, thus ensures user live broadcast service quality.
Preferably, this second network equipment 2 also comprises the 6th device (not shown).6th device is used for according to the live request about described programme televised live, described one-level M3U8 file and described first secondary M3U8 file is provided to the broadcasting application corresponding to described live request.
Particularly, when user submits the live request about this programme televised live to, this one-level M3U8 file and this first secondary M3U8 file, according to this live request, are directly provided to the broadcasting application corresponding to this live request, play for this application by the 6th device.Connect precedent, the file address sample of the one-level M3U8 file that this second device 202 generates is as follows:
http://stream-js.bestvcdn.com/live/cctv4/live.m3u8？se＝jiangsu&ct＝2
This second device 202 is according to the file content of this one-level M3U8 file, and splice the file address of secondary M3U8 file, the file address sample of this secondary M3U8 file is as follows:
http://stream-js.bestvcdn.com/live/cctv4/workflow1/mnf.m3u8
Subsequently, the 6th device is according to the live request about this programme televised live, as follows according to the live content slice address that the splicing of secondary M3U8 file content is actual:
http://stream-js.bestvcdn.com/live/cctv4/workflow1/2014030516/139400839.ts
Subscriber computer top box obtains live content according to this address from CDN service node, to play.
Fig. 3 illustrates a kind of equipment schematic diagram for programme televised live information of looking ahead in CDN in accordance with a preferred embodiment of the present invention.
As shown in Figure 3, first this system carries out real-time transcoding process to live signal source, subsequently, the process such as source server is cut into slices to the live signal source after this transcoding process, encapsulation, second network equipment 2 (independently or mutually integrated with this source server), based on this, generates one-level M3U8 file, the first secondary M3U8 file and the second secondary M3U8 file corresponding to programme televised live; Subsequently, this second network equipment 2, based on this second secondary M3U8 file and live delayed data corresponding to this programme televised live, generates the 3rd secondary M3U8 file corresponding to this programme televised live.This second secondary M3U8 file and the 3rd secondary M3U8 file are deposited in assigned catalogue by this second network equipment 2.First network equipment 1 (independently or mutually integrated with CDN service node) is in this assigned catalogue, obtain the second secondary M3U8 file corresponding to programme televised live and the 3rd secondary M3U8 file, wherein, described 3rd secondary M3U8 file is determined based on described second secondary M3U8 file and live delayed data corresponding to described programme televised live; Subsequently, this first network equipment 1 obtains programme televised live information corresponding with this second secondary M3U8 file and the 3rd secondary M3U8 file in this programme televised live, to meet follow-up relevant live request.
At this, the secondary M3U8 file that this first secondary M3U8 file is served for being supplied to user's (Set Top Box), this second secondary M3U8 file is for being supplied to first network equipment 1, namely, perform the computing equipment of pre-fetch function, as prefetch module, secondary M3U8 file.These two secondary M3U8 files are discrepant, as:
Be mnf.m3u8 by this first secondary M3U8 file designation.This file content is such as follows:
#EXTINF:10,
2014032111/139537136.ts
#EXTINF:10,
2014032111/139537137.ts
#EXTINF:10,
2014032111/139537138.ts
Be Rmnf.m3u8 by this second secondary M3U8 file designation.This file content is such as follows:
#EXTINF:10,
2014032111/139537137.ts
#EXTINF:10,
2014032111/139537138.ts
#EXTINF:10,
2014032111/139537139.ts
As from the foregoing, the difference on both files is: the section file that the second secondary M3U8 file describes describes than the Zao section of the second secondary M3U8 file section.It means that user's (Set Top Box) is when taking such as 2014032111/139537136.ts section, and first network equipment 1, as prefetch module, downloads to 2014032111/139537137.ts in CDN service node.
Fig. 4 illustrates a kind of method flow diagram for programme televised live information of looking ahead in CDN according to another aspect of the present invention.
In step S401, first network equipment 1 obtains the second secondary M3U8 file corresponding to programme televised live and the 3rd secondary M3U8 file, wherein, described 3rd secondary M3U8 file is determined based on described second secondary M3U8 file and live delayed data corresponding to described programme televised live.
Particularly, in step S401, first network equipment 1 such as reads specific file from the assigned address of third party device, to obtain the second secondary M3U8 file corresponding to programme televised live and the 3rd secondary M3U8 file, such as, from the assigned catalogue of second network equipment 2, obtain that this second network equipment 2 generates with the second secondary M3U8 file corresponding to programme televised live and the 3rd secondary M3U8 file.Wherein, the 3rd secondary M3U8 file is determined based on this second secondary M3U8 file and live delayed data corresponding to this programme televised live.
Such as, second network equipment 2 generates the second secondary M3U8 file, and with certain update cycle, such as using live delayed data corresponding to this programme televised live as the update cycle, as every 10 seconds, upgrade this second secondary M3U8 file, to generate the 3rd secondary M3U8 file.And this second secondary M3U8 file and the 3rd secondary M3U8 file are left in assigned catalogue.In step S401, first network equipment 1, with certain acquisition cycle, as every 10 seconds, in the assigned catalogue of this second network equipment 2, obtains this second secondary M3U8 file and the 3rd secondary M3U8 file.
At this, generate when the second secondary M3U8 file is cut into slices to live signal, the update cycle of second network equipment 2 to this second secondary M3U8 file means that first network equipment 1 just can get the 3rd up-to-date secondary M3U8 file in this update cycle.At this, the update cycle can default setting with the value in the cycle of acquisition, also can adjust according to actual conditions.
At this, first network equipment 1 is such as performing the computing equipment of pre-fetch function, and it can independently exist, also can be mutually integrated with CDN service node.
At this, such as, be Rmnf.m3u8 by this second secondary M3U8 file designation.This file content is such as follows:
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:10
#EXT-X-MEDIA-SEQUENCE:139537137
#EXTINF:10,
2014032111/139537137.ts
#EXTINF:10,
2014032111/139537138.ts
#EXTINF:10,
2014032111/139537139.ts
...
Then the 3rd secondary M3U8 file is based on above-mentioned second secondary M3U8 file, using live delayed data corresponding to this programme televised live as the update cycle, upgrade and determine.In this instance, suppose that this live delayed data is 10 seconds, then the 3rd secondary M3U8 file content is as follows:
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:10
#EXT-X-MEDIA-SEQUENCE:139537138
#EXTINF:10,
2014032111/139537138.ts
#EXTINF:10,
2014032111/139537139.ts
#EXTINF:10,
2014032111/139537140.ts
...
Those skilled in the art will be understood that the mode of above-mentioned acquisition second secondary M3U8 file and the 3rd secondary M3U8 file is only citing; the mode of other acquisition second secondary M3U8 files that are existing or that may occur from now on and the 3rd secondary M3U8 file is as being applicable to the present invention; also within scope should being included in, and this is contained at this with way of reference.
In step S403, first network equipment 1 obtains programme televised live information corresponding with described second secondary M3U8 file and described 3rd secondary M3U8 file in described programme televised live, to meet follow-up relevant live request.
Particularly, in step S403, first network equipment 1 is according to the second secondary M3U8 file obtained in step S401 and the 3rd secondary M3U8 file, the programme televised live information corresponding with this second secondary M3U8 file and the 3rd secondary M3U8 file is obtained, to meet follow-up relevant live request in programme televised live.Such as, in step S403, the sample that first network equipment 1 obtains direct broadcast band URL is as follows:
http://192.168.1.10/CCTV1//workflow1/2014032111/139537137.ts
Wherein, http: // 192.168.1.10/CCTV1/ is the base address that first network equipment 1 configures;
../workflow1/ be write the dead directory address depositing live content at the CDN service node of first network equipment 1;
2014032111/139537137.ts be the slice address that the second secondary M3U8 file or the 3rd secondary M3U8 file describe.
And then, in step S403, the programme televised live information corresponding with described second secondary M3U8 file and described 3rd secondary M3U8 file got such as is deposited in the catalogue of this CDN service node by first network equipment 1, if relevant live request is had consequently follow-up, to in the catalogue of this CDN service node, directly can obtain this programme televised live information.
Those skilled in the art will be understood that the mode of above-mentioned acquisition programme televised live information is only citing; the mode of other acquisition programme televised live information that are existing or that may occur from now on is as being applicable to the present invention; also within scope should being included in, and this is contained at this with way of reference.
Preferably, be constant work between each step of first network equipment 1.Particularly, in step S401, first network equipment 1 obtains the second secondary M3U8 file corresponding to programme televised live and the 3rd secondary M3U8 file, and wherein, described 3rd secondary M3U8 file is determined based on described second secondary M3U8 file and live delayed data corresponding to described programme televised live; In step S403, first network equipment 1 obtains programme televised live information corresponding with described second secondary M3U8 file and described 3rd secondary M3U8 file in described programme televised live, to meet follow-up relevant live request.At this, it will be understood by those skilled in the art that " continuing " refers to that each step of first network equipment 1 is respectively according to the mode of operation requirement of setting or real-time adjustment, obtains the second secondary M3U8 file and the 3rd secondary M3U8 file, obtains corresponding programme televised live information.
At this, first network equipment 1 to be looked ahead (through time delay) programme televised live information by one-level M3U8 file and secondary M3U8 file, with improve bandwidth resources utilance and improve user programming access experience, the method of looking ahead effectively can tackle the shake of network, thus ensures user live broadcast service quality.
Preferably, the method also comprises step S405 (not shown).In step S405, described programme televised live information, according to the live request about described programme televised live, is provided to the broadcasting application corresponding to described live request by first network equipment 1.
Particularly, when user have submitted the live request about this programme televised live, in step S405, the programme televised live information obtained in step S403, according to this live request, is provided to the broadcasting application corresponding to this live request by first network equipment 1.Such as, in step S403, first network equipment 1 obtains the programme televised live information corresponding with this second secondary M3U8 file and the 3rd secondary M3U8 file in programme televised live, and by this programme televised live information stored in CDN service node, when user submits the live request about this programme televised live to, in step S405, first network equipment 1 is from this CDN service node, this programme televised live information is provided to the broadcasting application corresponding to this live request, plays for this application.
Preferably, in step S403, first network equipment 1 obtains programme televised live information corresponding with described second secondary M3U8 file and described 3rd secondary M3U8 file in described programme televised live and comprises:
According to predetermined code check priority rule, obtain programme televised live information corresponding with described second secondary M3U8 file and described 3rd secondary M3U8 file in described programme televised live.
Particularly, for same programme televised live, a process of looking ahead is had to work alone, may various code rate be there is in this programme televised live, after the live signal of this programme televised live is cut into slices, also different code checks may be there is in different programme televised live sections, in step S403, first network equipment 1 can according to predetermined code check priority rule, obtain programme televised live information corresponding with described second secondary M3U8 file and described 3rd secondary M3U8 file in described programme televised live, such as, in a process, the programme televised live section that preferential download code check is lower, download the programme televised live section that code check is higher again, so that all code check sections of this programme televised live are taken to CDN service node in advance.Preferably, in step S403, first network equipment 1 according to dissimilar programme televised live, can also determine different code check priority rules, to obtain better user's experience.
At this, first network equipment 1, according to predetermined code check priority rule, obtains corresponding programme televised live information, further increases bandwidth resources utilance, and the programming access improving user is experienced.
Preferably, described live delayed data corresponds to the section duration information of described programme televised live.
Particularly, the 3rd secondary M3U8 file be based on the second secondary M3U8 file and live delayed data corresponding to programme televised live determined, this live delayed data corresponds to the section duration information of this programme televised live, as single or multiple section duration.Such as, this live delayed data corresponds to the single section duration of this programme televised live, and this single section duration is 10s, then the 3rd secondary M3U8 file is based on the second secondary M3U8 file, using 10s as the update cycle, upgrade and obtain.
Preferably, in step S401, first network equipment 1, when receiving live trigger message, obtains the second secondary M3U8 file corresponding to programme televised live and the 3rd secondary M3U8 file.
Particularly, when in step S401, when first network equipment 1 receives live trigger message, such as, when receiving live signal or other trigger events, just from assigned catalogue, as from the Rmnf.m3u8 file directory of second network equipment 2, obtain the second secondary M3U8 file corresponding to programme televised live and the 3rd secondary M3U8 file.Such as, in step S401, first network equipment 1 travels through Rmnf.m3u8 file directory in real time, once find there is Rmnf.m3u8 file update in this file directory, namely triggers and obtains operation, obtain this Rmnf.m3u8 file.
Those skilled in the art will be understood that above-mentioned live trigger message is only citing, and other live trigger messages that are existing or that may occur from now on, as being applicable to the present invention, within also should being included in scope, and are contained in this at this with way of reference.
Fig. 5 illustrates a kind of method flow diagram for programme televised live information of looking ahead in CDN according to another aspect of the present invention.
In step S502, second network equipment 2 generates one-level M3U8 file, the first secondary M3U8 file and the second secondary M3U8 file corresponding to programme televised live.
Particularly, live broadcast system is after receiving live signal, transcoding operation is carried out to this live signal, subsequently, the operations such as this live broadcast system is cut into slices to the live signal after this transcoding again, encapsulation, in step S502, second network equipment 2, based on this, generates one-level M3U8 file, the first secondary M3U8 file and the second secondary M3U8 file corresponding to programme televised live.
At this, the file address sample of this one-level M3U8 file is as follows:
http://stream-js.bestvcdn.com/live/cctv4/live.m3u8？se＝jiangsu&ct＝2
The file sample of this one-level M3U8 file is as follows:
#EXTM3U
#EXT-X-STREAM-INF:PROGRAM-ID＝1,BANDWIDTH＝200000
workflow1/mnf.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID＝1,BANDWIDTH＝400000
workflow2/mnf.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID＝1,BANDWIDTH＝700000
workflow3/mnf.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID＝1,BANDWIDTH＝1300000
workflow4/mnf.m3u8
In step S502, second network equipment 2 is also according to the file content of this one-level M3U8 file, and splice the file address of secondary M3U8 file, the file address sample of this secondary M3U8 file is as follows:
http://stream-js.bestvcdn.com/live/cctv4/workflow1/mnf.m3u8
The file sample of this secondary M3U8 file is as follows:
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:10
#EXT-X-MEDIA-SEQUENCE:139400839
#EXTINF:10,
2014030516/139400839.ts
#EXTINF:10,
2014030516/139400840.ts
#EXTINF:10,
2014030516/139400841.ts
Wherein, this secondary M3U8 file comprises the first secondary M3U8 file and the second secondary M3U8 file, this first secondary M3U8 file is the secondary M3U8 file being supplied to user's service, this second secondary M3U8 file is for being supplied to first network equipment 1, namely, perform the computing equipment of pre-fetch function, secondary M3U8 file.Second network equipment 2 generates the first secondary M3U8 file corresponding to this programme televised live and the second secondary M3U8 file simultaneously.
Such as, be mnf.m3u8 by this first secondary M3U8 file designation.This file content is such as follows:
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:10
#EXT-X-MEDIA-SEQUENCE:139537136
#EXTINF:10,
2014032111/139537136.ts
#EXTINF:10,
2014032111/139537137.ts
#EXTINF:10,
2014032111/139537138.ts
...
Such as, be Rmnf.m3u8 by this second secondary M3U8 file designation.This file content is such as follows:
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:10
#EXT-X-MEDIA-SEQUENCE:139537137
#EXTINF:10,
2014032111/139537137.ts
#EXTINF:10,
2014032111/139537138.ts
#EXTINF:10,
2014032111/139537139.ts
...
At this, mnf.m3u8 and Rmnf.m3u8 generates based on during live section simultaneously, does not have inheritance between two files.
At this, second network equipment 2 is such as generating the computing equipment of one-level, secondary M3U8 file, and it can independently exist, also can be mutually integrated with source server.
Those skilled in the art will be understood that; the mode of above-mentioned generation one-level M3U8 file, the first secondary M3U8 file and the second secondary M3U8 file is only citing; the mode of other generation one-level M3U8 file that is existing or that may occur from now on, the first secondary M3U8 file and the second secondary M3U8 files is as being applicable to the present invention; also within scope should being included in, and this is contained at this with way of reference.
In step S504, second network equipment 2 generates the 3rd secondary M3U8 file corresponding to described programme televised live, and wherein, described 3rd secondary M3U8 file is determined based on described second secondary M3U8 file and live delayed data corresponding to described programme televised live.
Particularly, in step S504, second network equipment 2 is according to the second secondary M3U8 file generated in step S502, by upgrading this second secondary M3U8 file, such as using live delayed data corresponding to this programme televised live as the update cycle, this second secondary M3U8 file is upgraded, generates the 3rd secondary M3U8 file corresponding to programme televised live.At this, generate when second secondary M3U8 file is cut into slices to live signal, in step S504, the update cycle of second network equipment 2 to this second secondary M3U8 file means that first network equipment 1 just can get the 3rd up-to-date secondary M3U8 file in this update cycle.At this, this update cycle such as default setting is 10s, or its value can adjust according to actual conditions.
At this, second network equipment 2 to be looked ahead (through time delay) programme televised live information by one-level M3U8 file and secondary M3U8 file, with improve bandwidth resources utilance and improve user programming access experience, the method of looking ahead effectively can tackle the shake of network, thus ensures user live broadcast service quality.
Preferably, the method also comprises step S506 (not shown).In step S506, described one-level M3U8 file and described first secondary M3U8 file, according to the live request about described programme televised live, are provided to the broadcasting application corresponding to described live request by second network equipment 2.
Particularly, when user submits the live request about this programme televised live to, in step S506, second network equipment 2 is according to this live request, directly this one-level M3U8 file and this first secondary M3U8 file are provided to the broadcasting application corresponding to this live request, play for this application.Connect precedent, in step S502, the file address sample of the one-level M3U8 file that second network equipment 2 generates is as follows:
http://stream-js.bestvcdn.com/live/cctv4/live.m3u8？se＝jiangsu&ct＝2
In step S502, second network equipment 2 is according to the file content of this one-level M3U8 file, and splice the file address of secondary M3U8 file, the file address sample of this secondary M3U8 file is as follows:
http://stream-js.bestvcdn.com/live/cctv4/workflow1/mnf.m3u8
Subsequently, in step S506, second network equipment 2 is according to the live request about this programme televised live, as follows according to the live content slice address that the splicing of secondary M3U8 file content is actual:
http://stream-js.bestvcdn.com/live/cctv4/workflow1/2014030516/139400839.ts
Subscriber computer top box obtains live content according to this address from CDN service node, to play.
It should be noted that the present invention can be implemented in the assembly of software and/or software restraint, such as, application-specific integrated circuit (ASIC) (ASIC), general object computer or any other similar hardware device can be adopted to realize.In one embodiment, software program of the present invention can perform 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, such as, 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, such as, as coordinating with processor thus performing the circuit of each step or function.
In addition, a part of the present invention can be applied to computer program, such as computer program instructions, when it is performed by computer, by the operation of this computer, can call or provide according to method of the present invention and/or technical scheme.And call the program command of method of the present invention, may be stored in fixing or moveable recording medium, and/or be transmitted by the data flow in broadcast or other signal bearing medias, and/or be stored in the working storage of the computer equipment run according to described program command.At this, comprise a device according to one embodiment of present invention, this device comprises the memory for storing computer program instructions and the processor for execution of program instructions, wherein, when this computer program instructions is performed by this processor, trigger this plant running based on the aforementioned method according to multiple 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 when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.In addition, obviously " comprising " one word do not get rid of other unit or step, odd number does not get rid of plural number.Multiple unit of stating in device claim or device also can be realized by software or hardware by a unit or device.First, second word such as grade is used for representing title, and does not represent any specific order.
Claims (15)
1., in the method for first network equipment end for programme televised live information of looking ahead in CDN, wherein, the method comprises:
Obtain the second secondary M3U8 file corresponding to programme televised live and the 3rd secondary M3U8 file, wherein, described 3rd secondary M3U8 file is determined based on described second secondary M3U8 file and live delayed data corresponding to described programme televised live;
Obtain programme televised live information corresponding with described second secondary M3U8 file and described 3rd secondary M3U8 file in described programme televised live, to meet follow-up relevant live request.
2. method according to claim 1, wherein, the method also comprises:
According to the live request about described programme televised live, described programme televised live information is provided to the broadcasting application corresponding to described live request.
3. method according to claim 1 and 2, programme televised live information corresponding with described second secondary M3U8 file and described 3rd secondary M3U8 file in the described programme televised live of described acquisition comprises:
According to predetermined code check priority rule, obtain programme televised live information corresponding with described second secondary M3U8 file and described 3rd secondary M3U8 file in described programme televised live.
4. according to the method in any one of claims 1 to 3, wherein, described live delayed data corresponds to the section duration information of described programme televised live.
5. method according to any one of claim 1 to 4, wherein, the second secondary M3U8 file corresponding to described acquisition programme televised live and the 3rd secondary M3U8 file comprise:
When receiving live trigger message, obtain the second secondary M3U8 file corresponding to programme televised live and the 3rd secondary M3U8 file.
6., in the method for second network equipment end for programme televised live information of looking ahead in CDN, wherein, the method comprises:
Generate one-level M3U8 file, the first secondary M3U8 file and the second secondary M3U8 file corresponding to programme televised live;
Generate the 3rd secondary M3U8 file corresponding to described programme televised live, wherein, described 3rd secondary M3U8 file is determined based on described second secondary M3U8 file and live delayed data corresponding to described programme televised live.
7. method according to claim 6, wherein, the method also comprises:
According to the live request about described programme televised live, described one-level M3U8 file and described first secondary M3U8 file are provided to the broadcasting application corresponding to described live request.
8. for a first network equipment for programme televised live information of looking ahead in CDN, wherein, this first network equipment comprises:
First device, for obtaining the second secondary M3U8 file corresponding to programme televised live and the 3rd secondary M3U8 file, wherein, described 3rd secondary M3U8 file is determined based on described second secondary M3U8 file and live delayed data corresponding to described programme televised live;
3rd device, for obtaining programme televised live information corresponding with described second secondary M3U8 file and described 3rd secondary M3U8 file in described programme televised live, to meet follow-up relevant live request.
9. first network equipment according to claim 8, wherein, this first network equipment also comprises:
5th device, for according to the live request about described programme televised live, is provided to the broadcasting application corresponding to described live request by described programme televised live information.
10. first network equipment according to claim 8 or claim 9, described 3rd device comprises for obtaining programme televised live information corresponding with described second secondary M3U8 file and described 3rd secondary M3U8 file in described programme televised live:
According to predetermined code check priority rule, obtain programme televised live information corresponding with described second secondary M3U8 file and described 3rd secondary M3U8 file in described programme televised live.
First network equipment according to any one of 11. according to Claim 8 to 10, wherein, described live delayed data corresponds to the section duration information of described programme televised live.
First network equipment according to any one of 12. according to Claim 8 to 11, wherein, described first device is used for:
When receiving live trigger message, obtain the second secondary M3U8 file corresponding to programme televised live and the 3rd secondary M3U8 file.
13. 1 kinds of second network equipment for programme televised live information of looking ahead in CDN, wherein, this second network equipment comprises:
Second device, for generating one-level M3U8 file, the first secondary M3U8 file and the second secondary M3U8 file corresponding to programme televised live;
4th device, for generating the 3rd secondary M3U8 file corresponding to described programme televised live, wherein, described 3rd secondary M3U8 file is determined based on described second secondary M3U8 file and live delayed data corresponding to described programme televised live.
14. second network equipment according to claim 13, wherein, this second network equipment also comprises:
6th device, for according to the live request about described programme televised live, is provided to the broadcasting application corresponding to described live request by described one-level M3U8 file and described first secondary M3U8 file.
15. 1 kinds of systems for programme televised live information of looking ahead in CDN, wherein, this system comprises the first network equipment according to any one of claim 8 to 12, and the second network equipment as described in claim 13 or 14.
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