CN107483979A - A kind of video dragging method and device applied to caching server - Google Patents
A kind of video dragging method and device applied to caching server Download PDFInfo
- Publication number
- CN107483979A CN107483979A CN201710817117.2A CN201710817117A CN107483979A CN 107483979 A CN107483979 A CN 107483979A CN 201710817117 A CN201710817117 A CN 201710817117A CN 107483979 A CN107483979 A CN 107483979A
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- Prior art keywords
- video
- key frame
- weight
- file
- caching server
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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]
- H04N21/40—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
- H04N21/47217—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 controlling playback functions for recorded or on-demand content, e.g. using progress bars, mode or play-point indicators or bookmarks
-
- 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
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2387—Stream processing in response to a playback request from an end-user, e.g. for trick-play
-
- 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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/65—Transmission of management data between client and server
- H04N21/658—Transmission by the client directed to the server
- H04N21/6587—Control parameters, e.g. trick play commands, viewpoint selection
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Human Computer Interaction (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- User Interface Of Digital Computer (AREA)
Abstract
The invention discloses a kind of video dragging method applied to caching server, the selection method of key frame includes, and selects some video subelements from all video subelement equal intervals, and assign the first weight；The start frame of some story boards based on video file plot itself and branch scape is selected from all video subelements, and assigns the second weight that weights are higher than the first weight；The start frame of some great result and plot turnovers based on video file plot itself is selected from all video subelements, and assigns the 3rd weight that weights are higher than the second weight；Some marker frames based on client's mark video file are selected from all video subelements, and assign the 4th weight that weights are higher than the 3rd weight.Compared with the key frame picked out at equal intervals of prior art, the determination of key frame of the embodiment of the present invention is more scientific, and Objective is stronger.
Description
Technical field
The present invention relates to communication technical field, is more particularly to related to a kind of video dragging method applied to caching server
And device.
Background technology
Modern life rhythm is more and more faster, and entertainment way is also very abundant.It is no longer unique that video is appreciated in online
Entertainment way, and there is no the time of big completely to finish watching whole video.More modes are passed through using fragment
The mode of dragging appreciates highlight segments therein.
Player used in video file broadcasting is all supported to pull in general video website, and pulling mode is generally divided into two
Kind, a kind of is the pulling mode based on byte, and another is time-based pulling mode.Current pulling mode be all with
Machine and blindness is stronger, it is necessary to which target fragment can just be found by repeatedly pulling.
The content of the invention
The present invention proposes a kind of video dragging method and device applied to caching server, for solving current drag
It is all that randomness and blindness are stronger, it is necessary to repeatedly pull the problem of just finding target fragment to drag mode.
The first object of the present invention is to disclose a kind of video dragging method applied to caching server, including following step
Suddenly：
Receive the dragging that video file is dragged to the specified location request that client is sent；
If caching server does not have the video file, the video file is replicated to caching server；
The video file is divided into multiple video subelements, and some video subelements are selected from all video subelements
As key frame；
According to the position for pulling the request determination specified location in the video file, and determine most similar
Key frame；
Using position corresponding to the key frame as the specified location pulled in asking；
The video file content of the specified location on caching server is sent to client；
The selection method of the key frame include from all video subelement equal intervals select some video subelements and
Unequal interval selects some video subelements from all video subelements.
Preferably, the selection method of key frame is selected from all video subelements, including：
Some video subelements are selected from all video subelement equal intervals, and assign the first weight；
Some story boards based on video file plot itself and branch are selected from all video subelements
The start frame of scape, and assign the second weight that weights are higher than the first weight；
Some great results and feelings based on plot of the video file itself are selected from all video subelements
The start frame of turnover is saved, and assigns the 3rd weight that weights are higher than the second weight；
Some marker frames based on client's mark video file are selected from all video subelements, and assign weights
Higher than the 4th weight of the 3rd weight；
The video subelement and its weight information picked out, it is stored in key frame letter one-to-one with the video file
Cease in meta file.
Preferably, it is described determine most similar key frame method be, it is described determine most similar key frame method be,
In the case of equal at the interval pulled between the specified location asked and key frame, the high pass of preferential specified weights
Key frame is the specified location.
Preferably, the story board, branch scape, great result and plot turnover start frame automatically determined according to drama or
It is artificial to determine.
Preferably, the marker frame is that same client to the video file, within a specified time specify by final dragging
Position.
Preferably, the key frame information meta file, including key frame information index part and key frame video section.
Preferably, the key frame information meta file real-time update, in the key frame information meta file, the key frame
Information index and key frame video are reversed by weight size.
A further object of the present invention is to disclose a kind of video dragging device applied to caching server, including,
Client pulls request reception unit, receives the dragging that video file is dragged to specified location that client is sent
Request；
Key frame module of selection, by the selection method of the key frame, key frame is selected from all video subelements；
Specified location screening unit, according to the position for pulling the request determination specified location in the video file
Put, and determine most similar key frame；
Specified location determining unit, using position corresponding to the key frame as the specified location pulled in asking；
Video file content transmitting element, the video file content of the specified location on caching server is sent to
Client.
Preferably, in addition to, key frame information meta file memory cell, key frame information meta file is stored.
Preferably, the key frame information meta file memory cell is key frame server.
Brief description of the drawings
Fig. 1 is the key frame schematic diagram selected in the video dragging method applied to caching server of prior art；
Fig. 2 is the selection method flow chart of the key frame of the embodiment of the present invention；
Fig. 3 is the key frame schematic diagram selected of the embodiment of the present invention；
Fig. 4 is the flow chart of the video dragging method applied to caching server of the embodiment of the present invention；
Fig. 5 is the most similar key frame of determination of the video dragging method applied to caching server of the embodiment of the present invention
Method flow chart；
Fig. 6 is the structural representation of the video dragging device applied to caching server of the embodiment of the present invention；
Fig. 7 is the video dragging device applied to caching server containing key frame server of the embodiment of the present invention
System construction drawing；
Embodiment
To describe technology contents, construction feature, institute's reached purpose and effect of the present invention in detail, embodiment is hereby enumerated below
It is explained in detail.
The embodiment of the invention discloses a kind of video dragging method applied to caching server, as shown in Fig. 2 key frame
Selection method include,
S11, some video subelements are selected from all video subelement equal intervals, and assign the first weight；
S21, selected from all video subelements some story boards based on video file plot itself and
The start frame of branch scape, and assign the second weight that weights are higher than the first weight；
S31, some great results based on plot of the video file itself are selected from all video subelements
The start frame transferred with plot, and assign the 3rd weight that weights are higher than the second weight；
S41, some marker frames based on client's mark video file are selected from all video subelements, and assigned
Weights are higher than the 4th weight of the 3rd weight.
The weighted that the embodiment of the present invention is picked out shows to select key frame in the weight of mathematically general significance
Priority parameter index.
The key frame that the embodiment of the present invention is picked out, as shown in figure 3, key frame includes the sub from all videos of the first weight
Video subelement F1, F3, F7 that unit equal intervals are selected, in addition to the second weight from all video subelements between non-grade
Every video subelement F2, the F6 selected.Also include the video that unequal interval is selected from all video subelements of the 3rd weight
Subelement F4.The video subelement F5 that also unequal interval from all video subelements including the 4th weight is selected.Video
Unit F 5 is endowed the first weight in the first weight assignment selected at equal intervals, and this video subelement F5 chooses in unequal interval
The 4th weight is endowed again during four weight assignment of choosing.
The interval of the embodiment of the present invention, can be time-based interval or the interval based on byte.
The embodiment of the present invention, it is determined that the method for most similar key frame, as shown in figure 5, including,
If the interval pulled between the request determination specified location and the 4th closest weight key frame is less than
Equal to the interval between the 3rd weight key frame, then the pass using the 4th closest weight key frame as the specified location
Key frame；Pull the interval that request determines between the specified location and the 4th closest weight key frame if described and be more than and the
Interval between three weight key frames, then continue to judge the 3rd weight key frame, even described pull asks to determine described specify
Interval between position and the 3rd closest weight key frame is less than or equal to interval between the second weight key frame, then
Key frame of the 3rd closest weight key frame as the specified location；If described pull the request determination specified location
Interval between the 3rd closest weight key frame is more than interval between the second weight key frame, then continues judgement the
Two weight key frames, if the interval pulled between the request determination specified location and the second closest weight key frame
Less than or equal to the interval between the first weight key frame, then using the second closest weight key frame as the specified location
Key frame；If the interval pulled between the request determination specified location and the second closest weight key frame is more than
With the interval between the first weight key frame, the then key using the first closest weight key frame as the specified location
Frame.
Compared with the key frame picked out at equal intervals of Fig. 1 prior arts, the determination more section of key frame of the embodiment of the present invention
Learn, Objective is stronger.
Preferably, the story board, branch scape, great result and plot turnover start frame automatically determined according to drama or
It is artificial to determine.The determination of second weight and the 3rd weight key frame, can be according to the independent camera lens in the script of director, field
Scape and the relevant information of great result and plot turnover, by machine come automatic identification formatted file, such as No. 1 camera lens, the
No. 2 camera lenses ..., the 1st scene, the 1st scene ..., automatically generate key frame.If lack associated script data, Ke Yitong
Cross and play the mode that video artefacts determine and determine key frame.
Preferably, the determination of the 4th weight key frame is marker frame, is that same client is being specified to the video file
Final dragging specified location in time.Such as the position that customer end A pulled for the last time within five minutes after repeatedly pulling
Put, be objective result position.Specified time can determine with the personal operating frequency of statistical analysis to optimize, and the time is too short to make
Into redundancy key frames, the time is oversize, and objective result twice can be caused there was only one, cause the key frame of loss marker.It is different
Customer end A and B operation due to target difference that may be present, therefore without same processing.Whether identical client is
Judgement can be based on IP address.
The embodiment of the invention discloses a kind of video dragging method applied to caching server, as shown in figure 4, including,
S101, receive the dragging that video file is dragged to the specified location request that client is sent；
S102, if caching server does not have the video file, the video file is replicated to slow from video server
Deposit server；
S201, by the selection method of the key frame, key frame is selected from all video subelements；
S301, according to the position for pulling the request determination specified location in the video file, and determine most
Similar key frame；
S401, using position corresponding to the key frame as the specified location pulled in asking；
S501, the video file content of the specified location on caching server is sent to client.
By the dragging method of the present embodiment, the specified location formulation for the dragging request that buffer service can be to client
Specified location optimizes, it is easier to hit, reduces randomness and blindness.
Preferably, generation and the one-to-one key frame information meta file of the video file, the key frame information
Store in the key frame message file.The key frame information meta file, including key frame information index part and key frame
Video section.The key frame information meta file real-time update, in the key frame information meta file, the key frame information rope
Draw and reversed with key frame video by weight size.Meta file can be .xml forms .Afa forms or other forms.First text
Part key frame information index part real-time update, is reversed, it is possible to reduce search time by weight size, it is not necessary to is run through whole
Meta file.
The embodiment of the invention also discloses a kind of video dragging device applied to caching server, as shown in fig. 6, bag
Include,
Receiving unit 101, receive the dragging that video file is dragged to the specified location request that client is sent；
Module of selection 201, by the selection method of the key frame, key frame is selected from all video subelements；
Screening unit 301, according to the position for pulling the request determination specified location in the video file, and
It is determined that most similar key frame；
Determining unit 401, using position corresponding to the key frame as the specified location pulled in asking；
Transmitting element 501, the video file content of the specified location on caching server is sent to client.
Preferably, in addition to, meta file memory cell 601, key frame information meta file is stored.
As shown in fig. 7, meta file memory cell 601 is key frame server.
The embodiment of the present invention, key frame server can be as the data base calls of caching server.
As another preferred embodiment, key frame server, transmission connection can also be directly established with client.
In summary, only the preferred embodiments of the invention, does not limit protection scope of the present invention with this, all according to the present invention
The equivalent changes and modifications that the scope of the claims and description are made, it is all within the scope of patent of the present invention covers.
Claims (10)
1. a kind of video dragging method applied to caching server, it is characterised in that comprise the following steps：
The dragging for pulling current play position to the specified location of video file that client is sent is received to ask；
If caching server does not have the video file, the video file is replicated to caching server from video server；
Key frame is selected from all video subelements of the video file, key frame includes some videos selected at equal intervals
Some video subelements that subelement and unequal interval are selected；
According to the position for pulling the request determination specified location in the video file, and determine most similar key
Frame；
Using position corresponding to the key frame as the specified location pulled in asking；
The video file content of the specified location on caching server is sent to client.
2. it is applied to the video dragging method of caching server as claimed in claim 1, it is characterised in that
The selection method of key frame is selected from all video subelements, including：
Some video subelements are selected from all video subelement equal intervals, and assign the first weight；
Some story boards based on video file plot itself and branch scape are selected from all video subelements
Start frame, and assign the second weight that weights are higher than the first weight；
Some great results and plot turn based on plot of the video file itself are selected from all video subelements
The start frame of folding, and assign the 3rd weight that weights are higher than the second weight；
Some marker frames based on client's mark video file are selected from all video subelements, and assigns weights and is higher than
4th weight of the 3rd weight；
The video subelement and its weight information picked out, it is stored in key frame information member one-to-one with the video file
In file.
3. it is applied to the video dragging method of caching server as claimed in claim 1, it is characterised in that the determination most phase
The method of near key frame is the equal situation in the interval between the specified location for pulling request and key frame
Under, the high key frame of preferential specified weights is the specified location.
4. it is applied to the video dragging method of caching server as claimed in claim 2, it is characterised in that the story board,
The start frame of branch scape, great result and plot turnover is automatically determined according to drama or manually determined.
5. it is applied to the video dragging method of caching server as claimed in claim 2, it is characterised in that the marker frame is
Same client is to the video file within a specified time final dragging specified location.
6. it is applied to the video dragging method of caching server as claimed in claim 2, it is characterised in that the key frame letter
Cease meta file, including key frame information index part and key frame video section.
7. it is applied to the video dragging method of caching server as claimed in claim 6, it is characterised in that the key frame letter
Meta file real-time update is ceased, in the key frame information meta file, the key frame information index and key frame video press weight
Size reverses.
A kind of 8. video dragging device applied to caching server, it is characterised in that including,
Client pulls request reception unit, receives the dragging that video file is dragged to specified location that client is sent and asks
Ask；
Key frame module of selection, by the selection method of the key frame, key frame is selected from all video subelements；
Specified location screening unit, ask to determine position of the specified location in the video file according to described pull,
And determine most similar key frame；
Specified location determining unit, using position corresponding to the key frame as the specified location pulled in asking；
Video file content transmitting element, the video file content of the specified location on caching server is sent to client
End.
9. it is applied to the video dragging device of caching server as claimed in claim 8, it is characterised in that also include, it is crucial
Frame information meta file memory cell, store key frame information meta file.
10. it is applied to the video dragging device of caching server as claimed in claim 9, it is characterised in that the key frame
Information word file storage unit is key frame server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710817117.2A CN107483979B (en) | 2017-09-12 | 2017-09-12 | A kind of video dragging method and device applied to cache server |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710817117.2A CN107483979B (en) | 2017-09-12 | 2017-09-12 | A kind of video dragging method and device applied to cache server |
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| Publication Number | Publication Date |
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| CN107483979A true CN107483979A (en) | 2017-12-15 |
| CN107483979B CN107483979B (en) | 2019-12-03 |
Family
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