CN109525861A - A kind of method and device of video needed for determining user - Google Patents
A kind of method and device of video needed for determining user Download PDFInfo
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- CN109525861A CN109525861A CN201811480910.9A CN201811480910A CN109525861A CN 109525861 A CN109525861 A CN 109525861A CN 201811480910 A CN201811480910 A CN 201811480910A CN 109525861 A CN109525861 A CN 109525861A
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000004364 calculation method Methods 0.000 claims abstract description 5
- 230000000875 corresponding effect Effects 0.000 claims description 54
- 238000004891 communication Methods 0.000 claims description 14
- 238000004590 computer program Methods 0.000 claims description 8
- 230000002596 correlated effect Effects 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 235000013399 edible fruits Nutrition 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000007726 management method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
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Classifications
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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
- H04N21/234—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
- H04N21/234—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
- H04N21/234381—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 altering the temporal resolution, e.g. decreasing the frame rate by frame skipping
-
- 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
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- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The method and device of video needed for a kind of determining user provided in an embodiment of the present invention, applied to mobile edge calculations MEC server, compared with the prior art, the embodiment of the present invention is by judging whether that store current network environment corresponds to the second video of code rate, if storing the second video of code rate corresponding with current network environment, then second video is sent to user terminal, if the second video of not stored code rate corresponding with current network environment, the third video that then will acquire carries out transcoding, third video after transcoding is stored as the second video, after storing in this way, when receiving the request of same video next time, the request that reception MEC server obtains same video is repeated without remote server, then transcoding is repeated, therefore the time that different user obtains same video can be saved, promote user experience.
Description
Technical field
The present invention relates to video technique fields, more particularly to a kind of method and device of video needed for determining user.
Background technique
With the development of science and technology, one of had become by way of user dotes on watching video acquisition information, and network rings
Border directly affects acquisition of the user to required video.In the prior art, user is obtained by monitoring network environment from remote server
Derived from video needed for body, the process for obtaining video below for the prior art is described in detail.
With reference to Fig. 1, MEC (Multi-Access Edge Computing, mobile edge calculations) server in the prior art
As distance closest to the server of user terminal, after the acquisition request for receiving the video that user terminal is sent, base station monitoring is worked as
Preceding Network Environment Status simultaneously notifies MEC server, MEC server according to current Network status, to remote server send with
Current network environment corresponds to the acquisition request of the video of code rate, when the view for not having preceding network environment to correspond to code rate in remote server
When frequency, remote server needs the video to current high code rate to carry out transcoding, to reduce the code rate of video, so that the view after transcoding
The code rate of frequency is lower than current high code rate, the video after then sending transcoding to MEC server, and MEC server is by the view after transcoding
It takes place frequently and gives user.
But in the prior art, after different user repeats to send the acquisition request of same video to MEC server, far
End server needs to repeat video code conversion to high code rate, then gives the transmission of video after transcoding to MEC server, and by
MEC server is available to user.Therefore prior art different user obtain same video time it is longer, user experience is not
It is high.
Summary of the invention
The embodiment of the present invention be designed to provide a kind of determining user needed for video method and device, to reduce difference
User obtains the time of same video, improves user experience.Specific technical solution is as follows:
In a first aspect, the method for video needed for a kind of determining user provided in an embodiment of the present invention, is applied to mobile edge
Calculate MEC server, comprising:
After receiving the first video request for sending under the current network environment of user terminal, judge whether storage with it is current
Network environment corresponds to the second video of code rate；
If storing the second video of code rate corresponding with current network environment, the second video is sent to user terminal；The
The content of two videos is identical as the content of the first video, and the code rate of the second video is lower than the code rate of the first video；
If the second video of not stored code rate corresponding with current network environment, third video is subjected to transcoding to second
The code rate of video；The content of third video is identical as the content of the second video, and the code rate of third video is higher than the second video
Code rate；
It is sent to user terminal using the third video after transcoding as the second video, and stores the second video.
Optionally, if the second video of not stored code rate corresponding with current network environment, third video is turned
Code to the second video code rate, comprising:
If the second video of not stored code rate corresponding with current network environment, judge whether to store third video, such as
Fruit stores third video, then third video is carried out to the code rate of transcoding to the second video；
If not stored third video obtains third video from remote server and is stored, and by third video into
Row transcoding to the second video code rate.
Optionally, if the second video of not stored code rate corresponding with current network environment, third video is turned
Code to the second video code rate, comprising:
If the second video of not stored code rate corresponding with current network environment, judge whether storage and the second video codes
The immediate video of rate will be stored with the second video code rate most if the immediate video of code rate of storage and the second video
Close video is as third video；
Third video is carried out to the code rate of transcoding to the second video.
Optionally, if not stored third video, third video is obtained from remote server and is stored, and by third
Video carries out the code rate of transcoding to the second video, comprising:
If not stored third video, it is most similar that and code rate identical as the second video content is obtained from remote server
Video is stored as third video；
Third video is carried out to the code rate of transcoding to the second video.
Optionally, if not stored third video, third video is obtained from remote server and is stored, and by third
Video carries out the code rate of transcoding to the second video, comprising:
If not stored third video, the highest view of and code rate identical as the second video content is obtained from remote server
Frequency is stored as third video；
Third video is carried out to the code rate of transcoding to the second video.
Optionally, if the second video of not stored code rate corresponding with current network environment, third video is turned
Code to the second video code rate, comprising:
If the second video of not stored code rate corresponding with current network environment, got and the when from remote server
When the video frame of the identical third video of the content of two videos, acquired video frame is carried out to the code of transcoding to the second video
Rate.
Optionally, it is sent to user terminal using the third video after transcoding as the second video, and stores the second video, packet
It includes:
Third video after transcoding is sent to user terminal as the second video；
The code rate of code rate and third video based on the second video, according to the corresponding storage region of code rate grade, by second
Video and third video are stored.
Optionally, it is sent to user terminal using the third video after transcoding as the second video, and stores the second video, packet
It includes:
Select video to be stored from third video and the second video, store the quantity of video respectively with current network ring
The quality and residual memory space in border are positively correlated.
Second aspect, the system of video needed for a kind of determining user provided in an embodiment of the present invention, comprising: first aspect is real
The wireless management module applying the MEC server in example, being connected with MEC server,
Wireless management module is used to monitor the current network environment of user terminal, and the case where current network environment is informed
MEC server；
MEC server is connected with user terminal, and the second video that current network environment corresponds to code rate is issued user.
Second aspect, the device of video needed for a kind of determining user provided in an embodiment of the present invention, is applied to mobile edge
Calculate MEC server, comprising:
Judgment module, for judging after receiving the first video request that user terminal is sent under the current network environment
Whether second video of with current network environment corresponding code rate is stored；
Sending module is sent out if the second video for storing code rate corresponding with current network environment to user terminal
Send the second video；The content of second video is identical as the content of the first video, and the code rate of the second video is lower than the first video
Code rate；
Transcoding module, if the second video for not stored code rate corresponding with current network environment, by third video
Carry out the code rate of transcoding to the second video；
Memory module for being sent to user terminal for the third video after transcoding as the second video, and stores second
Video；The content of third video is identical as the content of the second video, and the code rate of third video is higher than the code rate of the second video.
Optionally, transcoding module is specifically used for:
If the second video of not stored code rate corresponding with current network environment, judge whether to store third video, such as
Fruit stores third video, then third video is carried out to the code rate of transcoding to the second video；
If not stored third video obtains third video from remote server and is stored, and by third video into
Row transcoding to the second video code rate.
Optionally, transcoding module is specifically used for:
If the second video of not stored code rate corresponding with current network environment, judge whether storage and the second video codes
The immediate video of rate will be stored with the second video code rate most if the immediate video of code rate of storage and the second video
Close video is as third video；
Third video is carried out to the code rate of transcoding to the second video.
Optionally, transcoding module is specifically used for:
If not stored third video, it is most similar that and code rate identical as the second video content is obtained from remote server
Video is stored as third video；
Third video is carried out to the code rate of transcoding to the second video.
Optionally, transcoding module is specifically used for:
If not stored third video, the highest view of and code rate identical as the second video content is obtained from remote server
Frequency is stored as third video；
Third video is carried out to the code rate of transcoding to the second video.
Optionally, transcoding module is specifically used for:
If the second video of not stored code rate corresponding with current network environment, got and the when from remote server
When the video frame of the identical third video of the content of two videos, acquired video frame is carried out to the code of transcoding to the second video
Rate.
Optionally, memory module is specifically used for:
Third video after transcoding is sent to user terminal as the second video；
The code rate of code rate and third video based on the second video, according to the corresponding storage region of code rate grade, by second
Video and third video are stored.
Optionally, memory module is specifically used for:
Select video to be stored from third video and the second video, store the quantity of video respectively with current network ring
The quality and residual memory space in border are positively correlated.
At the another aspect that the present invention is implemented, a kind of computer readable storage medium is additionally provided, it is described computer-readable
Instruction is stored in storage medium, when run on a computer, so that computer executes any of the above-described described one kind really
Determine the method for video needed for user.
At the another aspect that the present invention is implemented, the embodiment of the invention also provides a kind of, and the computer program comprising instruction is produced
Product, when run on a computer so that computer execute a kind of any of the above-described determining user needed for video side
Method.
The method and device of video needed for a kind of determining user provided in an embodiment of the present invention is applied to MEC server, leads to
It crosses after receiving the first video request that user terminal is sent under the current network environment, judges whether storage and current network ring
Border corresponds to the second video of code rate；If storing the second video of code rate corresponding with current network environment, sent out to user terminal
Send second video；If the second video of not stored code rate corresponding with current network environment, third video is turned
Code to the second video code rate；The third video after transcoding is sent to user terminal as the second video, and stores institute
State the second video.Compared with the prior art, the embodiment of the present invention is by judging whether that store current network environment corresponds to code rate
Second video sends second view to user terminal if the second video of storage code rate corresponding with current network environment
Frequently, if the second video of not stored code rate corresponding with current network environment, the third video that will acquire carries out transcoding, will turn
Third video after code is stored as the second video, after storing in this way, when next time receives the request of same video, and nothing
It needs remote server to repeat to receive MEC server and obtain the request of same video, then repeatedly transcoding, therefore difference can be saved
User obtains the time of same video, promotes user experience.Certainly, it implements any of the products of the present invention or method might not need
To reach all the above advantage simultaneously.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described.
Fig. 1 is the structure chart that user terminal, MEC server and remote server communicate with each other in the prior art；
Fig. 2 is the flow chart of the method for video needed for a kind of determining user provided in an embodiment of the present invention；
Fig. 3 is the flow chart provided in an embodiment of the present invention that transcoding is carried out to third video；
Fig. 4 is the structure chart of the system of video needed for a kind of determining user provided in an embodiment of the present invention；
Fig. 5 is the structure chart of the device of video needed for a kind of determining user provided in an embodiment of the present invention；
Fig. 6 is a kind of structure chart of server provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention is described.
The method of video needed for a kind of determining user provided in an embodiment of the present invention is briefly described first.
As shown in Fig. 2, the method for video needed for a kind of determining user of the embodiment of the present invention, is applied to mobile side
Edge calculates MEC server, comprising:
S201 judges whether to store after receiving the first video request that user terminal is sent under the current network environment
Second video of code rate corresponding with current network environment；
Current network environment includes: the current network environment of multiple grades.Specifically form this multiple current network environment
The reason of be: due to when MEC server access user terminal quantity it is more, the bandwidth of each user terminal becomes smaller, at this time respectively
The current network environment of a user terminal is deteriorated, and it is mutual in transmission process that excessive user terminal access will lead to the first video
Interference effect then transmits the efficiency decline of the first video.Thus, it is supposed that the biography that the first video will be transmitted under current network environment
Defeated loss is set as M, and user terminal quantity is set as N, and MEC server is according to user terminal quantity N and transmission loss M to current net
Network environment is divided into three grades；As N < a1With M < b1When, if current network environment grade be it is optimal, as N > a2Or M > b2
When, if current network environment grade is worst；Current network environment grade is good under remaining state.Wherein, a1、a2、b1、b2It is
Preset numerical value after the grade for dividing current network environment, can be convenient lookup code rate corresponding with current network environment
Second video, so as to improve the efficiency that each user terminal receives the second video.
S202 sends the second view to user terminal if the second video of storage code rate corresponding with current network environment
Frequently；
Wherein, the content of the second video is identical as the content of the first video, and the code rate of the second video is lower than the first video
Code rate；
Third video is carried out transcoding if the second video of not stored code rate corresponding with current network environment by S203
To the code rate of the second video；
Wherein, the content of third video is identical as the content of the second video, and the code rate of third video is higher than the second video
Code rate.
S204 is sent to user terminal for the third video after transcoding as the second video, and stores the second video.
Compared with the prior art, the embodiment of the present invention is by judging whether that store current network environment corresponds to the second of code rate
Video sends the second video to user terminal, if not if the second video of storage code rate corresponding with current network environment
The second video for storing corresponding with current network environment code rate, then the third video progress transcoding that will acquire, by the after transcoding
Three videos are stored as the second video, after storing in this way, when next time receives the request of same video, are taken without distal end
Business, which thinks highly of multiple connection and receives MEC server, obtains the request of same video, then repeatedly transcoding, therefore can save different user acquisition
The time of same video promotes user experience.
In order to save the time that different user obtains same video, above-mentioned S203 can use following at least one can
The implementation of energy carries out transcoding to third video:
With reference to Fig. 3, in a kind of possible embodiment, transcoding can be carried out using following steps third video:
S301 judges whether to store third view if the second video of not stored code rate corresponding with current network environment
Frequently, if third video, is carried out the code rate of transcoding to the second video by storage third video；
S302 obtains third video from remote server and is stored, and third is regarded if not stored third video
Frequency carries out the code rate of transcoding to the second video.
In the present embodiment, transcoding is carried out by obtaining third video from remote server, so as to mention for client
For video required under current network environment.
In alternatively possible embodiment, transcoding can be carried out using following steps third video:
Step 1: if the second video of not stored code rate corresponding with current network environment, judge whether storage and the
The immediate video of two video code rates will storage and the second view if the immediate video of code rate of storage and the second video
The immediate video of frequency code rate is as third video；
Step 2: third video is carried out to the code rate of transcoding to the second video.
In the present embodiment, by the way that transcoding can be improved by closest to the third video code conversion of the second video code rate
Efficiency, to save the time that different user obtains same video.
In another possible embodiment, if the second video of not stored code rate corresponding with current network environment,
Then when getting the video frame of third video identical with the content of the second video from remote server, by acquired video
Frame carries out the code rate of transcoding to the second video, so that frequency frame transcoding and transmission may be implemented in MEC server at the same time, so that user
It the video time to be received such as can reduce, promote user experience.
In order to save the time for obtaining third video, above-mentioned S302 can be using at least one possible embodiment from remote
It holds server to obtain third video and carries out transcoding:
In a kind of possible embodiment, third video can be obtained from remote server using following steps:
Step 1: if not stored third video, and code rate identical as the second video content is obtained from remote server
Most similar video is stored as third video；
Step 2: third video is carried out to the code rate of transcoding to the second video.
In the present embodiment, by the way that transcoding can be improved by closest to the third video code conversion of the second video code rate
Efficiency, to save the time that different user obtains same video.
In alternatively possible embodiment, third video can be obtained from remote server using following steps:
Step 1: if not stored third video, and code rate identical as the second video content is obtained from remote server
Highest video is stored as third video；
Step 2: third video is carried out to the code rate of transcoding to the second video.
In the present embodiment, transcoding is carried out by the highest video of the identical and code rate with the second video content and stored,
The time for searching same video can be saved, the third video after transcoding is quickly obtained, is obtained together to save different user
The time of one video.
Obtain current network environment in order to can be improved and correspond to the efficiency of bit-rate video, above-mentioned S204 can use such as down toward
A kind of few possible implementation is realized:
In a kind of possible embodiment, the third video after transcoding is sent to user terminal as the second video；
The code rate of code rate and third video based on the second video, according to the corresponding storage region of code rate grade, by the second video and
Three videos are stored.
Wherein, code rate is divided into three grades according to code rate is high, medium and low, the video that code rate is higher than the first code rate threshold value is
High bit-rate video, code rate are low bit-rate video lower than the video of the second code rate threshold value, and the video of remaining code rate is middle bit-rate video.
First code rate threshold value and the second code rate threshold value are the numerical value being manually set, and the first code rate threshold value is greater than the second code rate threshold value.
Such as: the storage region Cache of MEC server is divided into three sub- cache pools: Cache1, Cache2,
Cache3, capacity are respectively C1, C2, C3, and C1 > C2 > C3；It is high, medium and low that Cache1, Cache2, Cache3 respectively correspond storage
The video of code rate.It is then stored when the code rate of video is higher than the first code rate threshold value into the sub- cache pool of Cache1, when video
Code rate is higher than the second code rate threshold value lower than the first code rate threshold value, then is stored into the sub- cache pool of Cache2, when the code of video
Rate is then stored lower than the second code rate threshold value into the sub- cache pool of Cache3, and the first code rate threshold value and the second code rate threshold value are pre-
The numerical value being first arranged.
If certain sub- cache pool storage has been expired, (algorithm, Least Frequently are not frequently used recently using LFU
Used), the video that access frequency is low in full sub- cache pool will be stored to remove.If the frequency of two videos is identical,
Just first remove storage video earlier.
In the present embodiment, by storing the video of different code rates to corresponding storage region, lookup can be improved
The efficiency of bit-rate video corresponding with current network environment.
In alternatively possible embodiment, video is selected to be stored from third video and the second video.
Wherein, the quantity for storing video is positively correlated with the quality of current network environment and residual memory space respectively.
If the quality of current network environment is excellent, and residual memory space is more than storage threshold value, then by third video and
Second video all stores；The quality of current network environment is poor, and residual memory space is lower than storage threshold value, the second view of storage
Frequently；Remaining situation then stores third video.
In the present embodiment, according to the quality of current network environment and residual memory space, from third video and second
It selects video to be stored in video, the load of MEC server can be reduced, to promote the efficiency of MEC server, to save
Different user obtains the time of same video.
Storage condition is known in order to can be convenient, after S204 step, a kind of determining use provided in an embodiment of the present invention
The method of video needed for family further include:
The size of each video data of real-time statistics storage.
The size for each video data that the embodiment of the present invention can be stored by real-time statistics, selects from each video
Second video of code rate corresponding with current network environment is sent to user terminal, can be convenient to being sent to the second of user terminal
Video carries out traffic statistics, realizes charge on traffic to user.
Continue with the system introduction to video needed for a kind of determining user provided in an embodiment of the present invention.
As shown in figure 4, the system of video needed for a kind of determining user that inventive embodiments provide, comprising: first aspect is real
The wireless management module 401 applying the MEC server 402 in example, being connected with MEC server,
Wireless management module is used to monitor the current network environment of user terminal 403, and the case where by current network environment
Inform MEC server；
MEC server is connected with user terminal 403, and the second video that current network environment corresponds to code rate is issued user.
Continue with the device introduction to video needed for a kind of determining user provided in an embodiment of the present invention.
As shown in figure 5, the device of video needed for a kind of determining user that inventive embodiments provide, is applied to mobile edge meter
Calculate MEC server, comprising:
Judgment module 501, for sentencing after receiving the first video request that user terminal is sent under the current network environment
Disconnected the second video for whether storing code rate corresponding with current network environment；
Sending module 502, if the second video for storing code rate corresponding with current network environment, to user terminal
Send the second video；The content of second video is identical as the content of the first video, and the code rate of the second video is lower than the first video
Code rate；
Transcoding module 503, if the second video for not stored code rate corresponding with current network environment, third is regarded
Frequency carries out the code rate of transcoding to the second video；
Memory module 504 for being sent to user terminal using the third video after transcoding as the second video, and stores the
Two videos；The content of third video is identical as the content of the second video, and the code rate of third video is higher than the code rate of the second video.
Optionally, transcoding module is specifically used for:
If the second video of not stored code rate corresponding with current network environment, judge whether to store third video, such as
Fruit stores third video, then third video is carried out to the code rate of transcoding to the second video；
If not stored third video obtains third video from remote server and is stored, and by third video into
Row transcoding to the second video code rate.
Optionally, transcoding module is specifically used for:
If the second video of not stored code rate corresponding with current network environment, judge whether storage and the second video codes
The immediate video of rate will be stored with the second video code rate most if the immediate video of code rate of storage and the second video
Close video is as third video；
Third video is carried out to the code rate of transcoding to the second video.
Optionally, transcoding module is specifically used for:
If not stored third video, it is most similar that and code rate identical as the second video content is obtained from remote server
Video is stored as third video；
Third video is carried out to the code rate of transcoding to the second video.
Optionally, transcoding module is specifically used for:
If not stored third video, the highest view of and code rate identical as the second video content is obtained from remote server
Frequency is stored as third video；
Third video is carried out to the code rate of transcoding to the second video.
Optionally, transcoding module is specifically used for:
If the second video of not stored code rate corresponding with current network environment, got and the when from remote server
When the video frame of the identical third video of the content of two videos, acquired video frame is carried out to the code of transcoding to the second video
Rate.
Optionally, memory module is specifically used for:
Third video after transcoding is sent to user terminal as the second video；
The code rate of code rate and third video based on the second video, according to the corresponding storage region of code rate grade, by second
Video and third video are stored.
Optionally, memory module is specifically used for:
Select video to be stored from third video and the second video, store the quantity of video respectively with current network ring
The quality and residual memory space in border are positively correlated.
The embodiment of the invention also provides a kind of servers, as shown in fig. 6, including processor 601, communication interface 602, depositing
Reservoir 603 and communication bus 604, wherein processor 601, communication interface 602, memory 603 are completed by communication bus 604
Mutual communication,
Memory 603, for storing computer program；
Processor 601 when for executing the program stored on memory 603, realizes following steps:
After receiving the first video request for sending under the current network environment of user terminal, judge whether storage with it is current
Network environment corresponds to the second video of code rate；
If storing the second video of code rate corresponding with current network environment, the second video is sent to user terminal；The
The content of two videos is identical as the content of the first video, and the code rate of the second video is lower than the code rate of the first video；
If the second video of not stored code rate corresponding with current network environment, third video is subjected to transcoding to second
The code rate of video；The content of third video is identical as the content of the second video, and the code rate of third video is higher than the second video
Code rate；
It is sent to user terminal using the third video after transcoding as the second video, and stores the second video.
The communication bus that above-mentioned electronic equipment is mentioned can be Peripheral Component Interconnect standard (Peripheral Component
Interconnect, abbreviation PCI) bus or expanding the industrial standard structure (Extended Industry Standard
Architecture, abbreviation EISA) bus etc..The communication bus can be divided into address bus, data/address bus, control bus etc..
Only to be indicated with a thick line in figure, it is not intended that an only bus or a type of bus convenient for indicating.
Communication interface is for the communication between above-mentioned electronic equipment and other equipment.
Memory may include random access memory (Random Access Memory, abbreviation RAM), also may include
Nonvolatile memory (non-volatile memory), for example, at least a magnetic disk storage.Optionally, memory may be used also
To be storage device that at least one is located remotely from aforementioned processor.
Above-mentioned processor can be general processor, including central processing unit (Central Processing Unit,
Abbreviation CPU), network processing unit (Network Processor, abbreviation NP) etc.；It can also be digital signal processor
(Digital Signal Processing, abbreviation DSP), specific integrated circuit (Application Specific
Integrated Circuit, abbreviation ASIC), field programmable gate array (Field-Programmable Gate Array,
Abbreviation FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware components.
In another embodiment provided by the invention, a kind of computer readable storage medium is additionally provided, which can
It reads to be stored with instruction in storage medium, when run on a computer, so that computer executes any institute in above-described embodiment
The method of video needed for a kind of determining user stated.
In another embodiment provided by the invention, a kind of computer program product comprising instruction is additionally provided, when it
When running on computers, so that computer executes the side of video needed for a kind of any determining user in above-described embodiment
Method.
In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real
It is existing.When implemented in software, it can entirely or partly realize in the form of a computer program product.The computer program
Product includes one or more computer instructions.When loading on computers and executing the computer program instructions, all or
It partly generates according to process or function described in the embodiment of the present invention.The computer can be general purpose computer, dedicated meter
Calculation machine, computer network or other programmable devices.The computer instruction can store in computer readable storage medium
In, or from a computer readable storage medium to the transmission of another computer readable storage medium, for example, the computer
Instruction can pass through wired (such as coaxial cable, optical fiber, number from a web-site, computer, server or data center
User's line (DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to another web-site, computer, server or
Data center is transmitted.The computer readable storage medium can be any usable medium that computer can access or
It is comprising data storage devices such as one or more usable mediums integrated server, data centers.The usable medium can be with
It is magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid state hard disk
Solid State Disk (SSD)) etc..
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Each embodiment in this specification is all made of relevant mode and describes, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for device/
For server/computer readable storage medium storing program for executing/computer program product embodiments, implement since it is substantially similar to method
Example, so being described relatively simple, the relevent part can refer to the partial explaination of embodiments of method.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (10)
1. a kind of method of video needed for determining user, which is characterized in that it is applied to mobile edge calculations MEC server, it is described
Method includes:
After receiving the first video request that user terminal is sent under the current network environment, judge whether storage and current network
Environment corresponds to the second video of code rate；
If storing the second video of code rate corresponding with current network environment, second video is sent to user terminal；Institute
The content for stating the second video is identical as the content of first video, and the code rate of second video is lower than first video
Code rate；
If the second video of not stored code rate corresponding with current network environment, third video is subjected to transcoding to the second video
Code rate；The content of the third video is identical as the content of second video, and the code rate of the third video is higher than institute
State the code rate of the second video；
The third video after transcoding is sent to user terminal as the second video, and stores second video.
2. if the method according to claim 1, wherein the not stored code rate corresponding with current network environment
The second video, then by third video carry out transcoding to the second video code rate, comprising:
If the second video of not stored code rate corresponding with current network environment judges whether to store the third video, such as
Fruit stores the third video, then third video is carried out to the code rate of transcoding to the second video；
If the not stored third video, obtains third video from remote server and is stored, and the third is regarded
Frequency carries out the code rate of transcoding to the second video.
3. if the method according to claim 1, wherein the not stored code rate corresponding with current network environment
The second video, then by third video carry out transcoding to the second video code rate, comprising:
If the second video of not stored code rate corresponding with current network environment, judge whether storage and second video codes
The immediate video of rate will storage and second view if the immediate video of code rate of storage and second video
The immediate video of frequency code rate is as third video；
The third video is carried out to the code rate of transcoding to the second video.
4. if according to the method described in claim 2, it is characterized in that, the not stored third video, from distal end
Server obtains third video and is stored, and the third video is carried out to the code rate of transcoding to the second video, comprising:
If the not stored third video, and code rate most phase identical as second video content is obtained from remote server
Close video is stored as third video；
The third video is carried out to the code rate of transcoding to the second video.
5. if according to the method described in claim 2, it is characterized in that, the not stored third video, from distal end
Server obtains third video and is stored, and the third video is carried out to the code rate of transcoding to the second video, comprising:
If the not stored third video obtains and code rate highest identical as second video content from remote server
Video stored as third video；
The third video is carried out to the code rate of transcoding to the second video.
6. if the method according to claim 1, wherein the not stored code rate corresponding with current network environment
The second video, then by third video carry out transcoding to the second video code rate, comprising:
If the second video of not stored code rate corresponding with current network environment, got and described when from remote server
When the video frame of the identical third video of the content of two videos, the acquired video frame is subjected to transcoding to the second video
Code rate.
7. the method according to claim 1, wherein the third video using after transcoding is as the second view
It takes place frequently and gives user terminal, and store second video, comprising:
The third video after transcoding is sent to user terminal as the second video；
The code rate of code rate and the third video based on second video will according to the corresponding storage region of code rate grade
Second video and the third video are stored.
8. the method according to claim 1, wherein the third video using after transcoding is as the second view
It takes place frequently and gives user terminal, and store second video, comprising:
Select video to be stored from the third video and second video, store the quantity of video respectively with current net
The quality and residual memory space of network environment are positively correlated.
9. a kind of device of video needed for determining user, which is characterized in that it is applied to mobile edge calculations MEC server, it is described
Device includes:
Judgment module, for judging whether after receiving the first video request that user terminal is sent under the current network environment
Store the second video of code rate corresponding with current network environment；
Sending module sends institute to user terminal if the second video for storing code rate corresponding with current network environment
State the second video；The content of second video is identical as the content of first video, and the code rate of second video is low
In the code rate of first video；
Transcoding module, if the second video for not stored code rate corresponding with current network environment, third video is carried out
Transcoding to the second video code rate；The content of the third video is identical as the content of second video, and the third regards
The code rate of frequency is higher than the code rate of second video；
Memory module, for being sent to user terminal for the third video after transcoding as the second video, and described in storage
Second video.
10. a kind of server, which is characterized in that including processor, communication interface, memory and communication bus, wherein processing
Device, communication interface, memory complete mutual communication by communication bus；
Memory, for storing computer program；
Processor when for executing the program stored on memory, realizes any method and step of claim 1-8.
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