CN109963199A - Content distributing network and its distribution method - Google Patents
Content distributing network and its distribution method Download PDFInfo
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- CN109963199A CN109963199A CN201910329173.0A CN201910329173A CN109963199A CN 109963199 A CN109963199 A CN 109963199A CN 201910329173 A CN201910329173 A CN 201910329173A CN 109963199 A CN109963199 A CN 109963199A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000005538 encapsulation Methods 0.000 claims description 12
- 238000004891 communication Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
-
- 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
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
- H04N21/234309—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 or from Quicktime to Realvideo
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/2662—Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
-
- 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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47202—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Human Computer Interaction (AREA)
- Information Transfer Between Computers (AREA)
Abstract
The present invention provides a kind of content distributing network and its distribution method, belongs to field of communication technology, it is excessive can at least partly to solve the problems, such as that existing content distributing network memory space occupies.Scheduling unit of the invention judges whether the fringe node nearest apart from terminal prestores the video resource of content ID；Whether the attribute information of the video resource for the content ID that flange node judges in this way then nearest apart from terminal are prestored itself is identical as the attribute information in on-demand request；If otherwise the fringe node nearest apart from terminal further judges whether its own has corresponding transcoding capabilities；When the flange node judges nearest apart from terminal, which go out itself, has corresponding transcoding capabilities, then transcoding is carried out according to the attribute information in the on-demand request, and the video code flow after transcoding is pushed into terminal.
Description
Technical field
The invention belongs to fields of communication technology, and in particular to a kind of distribution method and a kind of content point of content distributing network
Hairnet network.
Background technique
In existing content distributing network (CDN), mostly the different resolution of same video content can be stored in fringe node
File, so that the terminal for different demands provides order program service.This can propose the memory space of entire content distribution network
Higher requirement increases operation expenses and maintenance difficulties.
Summary of the invention
The present invention at least partly solves the problems, such as that existing content distributing network memory space requirements are excessive, provides in one kind
The distribution method of content distributing network and a kind of content distributing network.
Solve the distribution method that technical solution used by present invention problem is a kind of content distributing network, comprising:
Scheduling unit tune receives the on-demand request of terminal, and it includes picture in attribute information which, which includes content ID and attribute information,
Matter information and encapsulation format information；Scheduling unit judges whether the fringe node nearest apart from terminal prestores the view of content ID
Frequency resource；When scheduling unit judges that the fringe node nearest apart from terminal prestores the video resource of content ID, distance
The attribute information of the video resource for the content ID that the nearest flange node judges of terminal are prestored itself whether with on-demand request
In attribute information it is identical；When the flange node judges nearest from terminal go out the video resource of the content ID itself prestored
When attribute information difference in attribute information and on-demand request, then the fringe node nearest apart from terminal further judges its own
Whether corresponding transcoding capabilities are had；When the flange node judges nearest apart from terminal go out itself to have corresponding transcoding capabilities
When, then transcoding is carried out according to the attribute information in the on-demand request, and the video code flow after transcoding is pushed into terminal.
Optionally, when the attribute for the video resource for judging content ID that the fringe node nearest apart from terminal is prestored
When information is identical as the attribute information in on-demand request, then the fringe node nearest apart from terminal is by the view of the content ID prestored
Frequency resource supplying is to terminal.
Optionally, when judging that the fringe node nearest apart from terminal has corresponding transcoding capabilities, then by the program request
Request scheduling is to central node.
Optionally, when judging that the fringe node nearest apart from terminal do not prestore the video resource of content ID, then
The on-demand request is dispatched to central node.
Optionally, image quality information includes resolution ratio and code rate.
Solving technical solution used by present invention problem is a kind of content distributing network, including central node, extremely
A few fringe node, content distributing network further includes scheduling unit, and scheduling unit includes on-demand request receiving module and first
Judgment module, fringe node include the second judgment module, third judgment module and transcoding module；On-demand request receiving module is used for
Adjust the on-demand request for receiving terminal, which includes content ID and attribute information, include in attribute information image quality information and
Encapsulation format information；First judgment module, for judging whether the fringe node nearest apart from terminal prestores content ID's
Video resource, if it is, sending the second judgment module into the first instruction to the fringe node nearest apart from terminal；Second sentences
Disconnected module is used to receive the attribute of the video resource for the content ID for judging that fringe node where it is prestored after the first instruction
Whether information is identical as the attribute information in on-demand request, if it is different, then sending the second instruction to third judgment module；Third
Whether judgment module has corresponding transcoding for the transcoding module of fringe node where judging it after receiving the second instruction
Ability if it is sends transcoding push instruction to the transcoding pushing module of fringe node where it；Transcoding pushing module is used for
After receiving transcoding instruction, corresponding attribute information is instructed turn to the video resource of content ID according to transcoding
Code, and the video code flow after transcoding is pushed into terminal.
Optionally, if the second judgment module judges the video resource for the content ID that fringe node where it is prestored
Attribute information is identical as the attribute information in on-demand request, then the second judgment module sends push instruction to transcoding pushing module；
Transcoding pushing module is used to that the video resource of content ID to be pushed to terminal after receiving push instruction.
Optionally, if third judgment module judges the transcoding pushing module of its place fringe node without corresponding
Transcoding capabilities, then the on-demand request is dispatched to central node by third judgment module.
Optionally, if first judgment module judges that the fringe node nearest apart from terminal does not prestore content ID's
The on-demand request is then dispatched to central node optionally by video resource, and image quality information includes resolution ratio and code rate.
According to the above method,
Detailed description of the invention
Fig. 1 is a kind of flow chart of the distribution method of content distributing network of the embodiment of the present invention；
Fig. 2 is a kind of block diagram of content distributing network of the embodiment of the present invention.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawing and specific embodiment party
Present invention is further described in detail for formula.
Embodiment 1:
Referring to Fig. 1, the present embodiment provides a kind of distribution methods of content distributing network, include the following steps.
The on-demand request of terminal is received in step S1, scheduling unit tune, which includes content ID and attribute information,
It include image quality information and encapsulation format information in attribute information.
Scheduling unit is set in content distributing network, to receive the on-demand request of user.Content ID shows user
Specifically want which video seen.Image quality information shows that user requests the video of the much code rates of what resolution ratio.Specifically, resolution ratio
Information can be reacted by coded format.Resolution ratio is higher, code rate is bigger, and certain image quality is higher.It is soft or hard due to different terminals
Part configuration is different, and the encapsulation format supported may also be different, therefore need to show requested encapsulation lattice in on-demand request
Formula.
Judge whether the fringe node nearest apart from terminal prestores the video money of content ID in step S2, scheduling unit
Source.Step is gone to when scheduling unit judges that the fringe node nearest apart from terminal prestores the video resource of content ID
Otherwise S3 goes to step S7.
In the category of the video resource for the content ID that step S3, the flange node judges nearest apart from terminal are prestored itself
Whether property information is identical as the attribute information in on-demand request.If it is step S6 is gone to, load is otherwise gone to and needs to illustrate
, using this method, the video content of the most frequently used encapsulation format of highest image quality only preferably is prestored in fringe node.So preferably
Floor board method further includes the steps that the utilization rate for counting the corresponding different encapsulation format of each content ID.
Further judge whether its own has corresponding transcoding energy in step S4, the fringe node nearest apart from terminal
Power.If it is step S5 is gone to, step S7 is otherwise gone to.
Transcoding is carried out according to the attribute information in the on-demand request in step S5, the fringe node nearest apart from terminal, and
Video code flow after transcoding is pushed into terminal.
The envelope of the video resource namely prestored when the encapsulation format of terminal request or image quality information and the fringe node
Fill format or when image quality information difference, the fringe node is according to the request progress transcoding being used for, and by the video code flow after transcoding
It submits to terminal.
It should be noted that if the resolution ratio of terminal request is also higher than the resolution ratio that the fringe node prestores file, that
It is pushed according to the resolution ratio for prestoring file.
In this way, under the premise of occupying whole system less memory space, remains to provide for user and meet its personalization
The video content of demand.
The video resource of the content ID prestored is pushed into terminal in step S6, the fringe node nearest apart from terminal.
Since the requested attribute information of terminal is consistent with the attribute information that the fringe node prestores file, the fringe node
Without transcoding, the video resource of the content ID directly prestored pushes out.
In step S7, which is dispatched to central node.The highest that central node is stored with all the elements ID is drawn
The video file of matter, and there is strongest computing capability.When the fringe node nearest apart from terminal do not have transcoding capabilities or
When not prestoring the video resource of the requested content ID of terminal, it can be responsible for terminal by central node, pushing away for video codes is provided
It send.
Optionally, image quality information includes resolution ratio and code rate.
Further, central node can provide the video of what content ID, what encapsulation format according to certain policy selection
Which fringe node source is pre-stored in.Those skilled in the art can flexibly make design.
Embodiment 2:
Referring to fig. 2, the present embodiment provides a kind of content distributing networks, the method to realize embodiment 1.Each module and list
The detailed operating mechanism of member can refer to embodiment 1.The content wind hairnet network includes central node 10, at least one fringe node
20, content distributing network further includes scheduling unit 30, and scheduling unit 30 includes that on-demand request receiving module 31 and first judges mould
Block 32, fringe node 20 include the second judgment module 21, third judgment module 22 and transcoding module；On-demand request receiving module 31
For adjusting the on-demand request for receiving terminal, it includes that image quality is believed in attribute information which, which includes content ID and attribute information,
Breath and encapsulation format information；Whether first judgment module 32, the fringe node 20 for judging nearest apart from terminal prestore this
The video resource of content ID, if it is, sending the second judgement into the first instruction to the fringe node 20 nearest apart from terminal
Module 21；Second judgment module 21 judges the content ID that fringe node 20 where it is prestored after being used to receive the first instruction
Video resource attribute information it is whether identical as the attribute information in on-demand request, if it is different, then to third judgment module
22 send the second instruction；Transcoding of the third judgment module 22 for the fringe node 20 where judging it after receiving the second instruction
Whether module has corresponding transcoding capabilities, if it is sends transcoding to the transcoding pushing module 23 of fringe node 20 where it
Push instruction；Transcoding pushing module 23 is used for after receiving transcoding instruction, instructs corresponding attribute information to carry out according to transcoding
Transcoding is carried out to the video resource of content ID, and the video code flow after transcoding is pushed into terminal.
Optionally, if the second judgment module 21 judges the video money for the content ID that fringe node 20 where it is prestored
The attribute information in source is identical as the attribute information in on-demand request, then the second judgment module 21 is pushed away to the transmission of transcoding pushing module 23
Send instruction；Transcoding pushing module 23 is used to that the video resource of content ID to be pushed to terminal after receiving push instruction.
Scheduling unit 30 can be specifically integrated in central node 10, naturally it is also possible to be independent unit.
Optionally, if third judgment module 22 judges that the transcoding pushing module 23 of its place fringe node 20 does not have
Corresponding transcoding capabilities, then the on-demand request is dispatched to central node 10 by third judgment module 22.
Optionally, if first judgment module 32 judges that the fringe node 20 nearest apart from terminal does not prestore the content
The on-demand request is then dispatched to central node 10 by the video resource of ID
Optionally, image quality information includes resolution ratio and code rate.
The memory space requirements amount of content distributing network entirety is greatly reduced.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
In the case where mind and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a kind of distribution method of content distributing network characterized by comprising
Scheduling unit tune receives the on-demand request of terminal, which includes content ID and attribute information, is wrapped in attribute information
Include image quality information and encapsulation format information；
Scheduling unit judges whether the fringe node nearest apart from terminal prestores the video resource of content ID；
When scheduling unit judges that the fringe node nearest apart from terminal prestores the video resource of content ID, apart from terminal
The attribute information of the video resource for the content ID that nearest flange node judges are prestored itself whether in on-demand request
Attribute information is identical；
When the flange node judges nearest from terminal go out the attribute information and point of the video resource of the content ID itself prestored
When broadcasting the attribute information difference in request, then the fringe node nearest apart from terminal further judges whether its own has correspondence
Transcoding capabilities；
When the flange node judges nearest apart from terminal, which go out itself, has corresponding transcoding capabilities, then according in the on-demand request
Attribute information carry out transcoding, and the video code flow after transcoding is pushed into terminal.
2. distribution method according to claim 1, which is characterized in that when judging the fringe node institute nearest apart from terminal
It is when the attribute information of the video resource of the content ID prestored is identical as the attribute information in on-demand request, then nearest apart from terminal
Fringe node the video resource of the content ID prestored is pushed into terminal.
3. distribution method according to claim 1, which is characterized in that when judging nearest apart from terminal fringe node tool
When standby corresponding transcoding capabilities, then the on-demand request is dispatched to central node.
4. distribution method according to claim 1, which is characterized in that when the fringe node for judging nearest apart from terminal does not have
There is the video resource for prestoring content ID, then the on-demand request is dispatched to central node.
5. distribution method according to claim 1, which is characterized in that image quality information includes resolution ratio and code rate.
6. a kind of content distributing network, including central node, at least one fringe node, which is characterized in that content distributing network
It further include scheduling unit, scheduling unit includes on-demand request receiving module and first judgment module, and fringe node is sentenced including second
Disconnected module, third judgment module and transcoding pushing module；
On-demand request receiving module is used to adjust the on-demand request of reception terminal, which includes content ID and attribute information,
It include image quality information and encapsulation format information in attribute information；
First judgment module, for judging whether the fringe node nearest apart from terminal prestores the video resource of content ID,
If it is, sending the second judgment module into the first instruction to the fringe node nearest apart from terminal；
Second judgment module is used to receive the video for the content ID for judging that fringe node where it is prestored after the first instruction
Whether the attribute information of resource is identical as the attribute information in on-demand request, if it is different, then sending the to third judgment module
Two instructions；
Whether third judgment module has pair for the transcoding module of fringe node where judging it after receiving the second instruction
The transcoding capabilities answered if it is send transcoding push instruction to the transcoding pushing module of fringe node where it；
Transcoding pushing module is used for after receiving transcoding instruction, instructs corresponding attribute information to carry out to the content according to transcoding
The video resource of ID carries out transcoding, and the video code flow after transcoding is pushed to terminal.
7. content distributing network according to claim 6, which is characterized in that if the second judgment module judges side where it
The attribute information of the video resource for the content ID that edge node is prestored is identical as the attribute information in on-demand request, then second sentences
Disconnected module sends push instruction to transcoding pushing module；
Transcoding pushing module is used to that the video resource of content ID to be pushed to terminal after receiving push instruction.
8. content distributing network according to claim 6, which is characterized in that if third judgment module judges its place
The transcoding pushing module of fringe node does not have corresponding transcoding capabilities, then during the on-demand request is dispatched to by third judgment module
Heart node.
9. content distributing network according to claim 6, which is characterized in that if first judgment module judges apart from terminal
Nearest fringe node does not prestore the video resource of content ID, then the on-demand request is dispatched to central node.
10. content distributing network according to claim 6, which is characterized in that image quality information includes resolution ratio and code rate.
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| CN201910329173.0A CN109963199A (en) | 2019-04-23 | 2019-04-23 | Content distributing network and its distribution method |
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| CN113347138A (en) * | 2020-03-02 | 2021-09-03 | 广州虎牙科技有限公司 | Method and device for transmitting transcoding data stream, computer equipment and storage medium |
| CN115134632A (en) * | 2021-03-25 | 2022-09-30 | 中国移动通信集团安徽有限公司 | Video code rate control method, device, medium and Content Delivery Network (CDN) system |
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Application publication date: 20190702 |