CN105100961B - Video thumbnail generation method and generating means - Google Patents
Video thumbnail generation method and generating means Download PDFInfo
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- CN105100961B CN105100961B CN201510435708.4A CN201510435708A CN105100961B CN 105100961 B CN105100961 B CN 105100961B CN 201510435708 A CN201510435708 A CN 201510435708A CN 105100961 B CN105100961 B CN 105100961B
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- 239000012634 fragment Substances 0.000 claims abstract description 75
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- 238000004458 analytical method Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 13
- 230000006399 behavior Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 230000003044 adaptive effect Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
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- 230000008569 process Effects 0.000 description 2
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- 101150076896 pts1 gene Proteins 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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
-
- 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
- H04N21/23412—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs for generating or manipulating the scene composition of objects, e.g. MPEG-4 objects
-
- 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
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/466—Learning process for intelligent management, e.g. learning user preferences for recommending movies
- H04N21/4667—Processing of monitored end-user data, e.g. trend analysis based on the log file of viewer selections
-
- 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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/858—Linking data to content, e.g. by linking an URL to a video object, by creating a hotspot
- H04N21/8586—Linking data to content, e.g. by linking an URL to a video object, by creating a hotspot by using a URL
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
A kind of video thumbnail generation method and generating means are disclosed in the embodiment of the present invention, methods described includes：Thumbnail display request is received, thumbnail display request includes the preview moment, and at the broadcasting moment of preview moment files in stream media corresponding to the thumbnail asked, the preview moment passes through the playing progress bar acquisition of player；According to burst list, burst address corresponding to the preview moment is obtained, burst list includes playing the corresponding relation of the burst address of moment and files in stream media；According to burst address, fragment request is sent to server, fragment request includes burst address corresponding to the preview moment；Burst corresponding to the preview moment of the reception server feedback simultaneously carries out the selection of key frame；According to the key frame selected, thumbnail is generated；Thumbnail is sent to player, so that player shows thumbnail at the corresponding preview moment.The present invention can generate video thumbnails without the support of player, while can reduce server stress, shorten the response time.
Description
Technical field
The present invention relates to Streaming Media process field, more particularly to a kind of video thumbnail generation method and generating means.
Background technology
With the continuous development of information technology, streaming media service occupies increasing ratio in a network, turns into people
The focus of growing interest.Adaptive stream media (HTTP Adaptive Streaming, abbreviation HAS) technology combines traditional
The characteristics of stream media technology and HTTP progressive downloads play, streaming medium content, Ke Yi great are transmitted in a manner of HTTP to user
The usage experience of big lifting user, while reduce the complexity of server.
Existing adaptive stream media technology would generally be provided in User Interface main window in streaming media playing and regarded
Frequency thumbnail, so that user browses the other guide of video in the playing process of files in stream media.Video thumbnails can be with
Progress bar is used cooperatively, and during streaming media playing, progress bar is moved to some preview moment by user, in play area meeting
The video thumbnails at preview moment are shown, as shown in figure 1, player is in the playing stream media file of play area 101, progress bar
102 are moved to the T1 moment, and the video thumbnails at T1 moment can be shown in the video preview window 103.
In existing adaptive stream media technology, because protocol layer does not have corresponding video thumbnails standard, simultaneous transmission
Packet in also without the presence of video thumbnails, therefore, player directly can not obtain thumbnail, generation contracting from server
Sketch map needs the support of player.If player does not support thumbnail systematic function, thumbnail and display contracting can not be generated
Sketch map.Such as in IOS systems, primary AV Player player framework closes source, can not directly transmit video data to
Player does decoding, and therefore, IOS systems possibly can not provide thumbnail preview function.
When player supports generation thumbnail, the generation method of existing video thumbnails is that player please to server
Seek the burst of files in stream media), the burst that the reception server returns, thumbnail is generated according to burst, and show in corresponding position
Show.In the prior art, need to obtain video TS bursts from server when generating video thumbnails at the preview moment, easily cause weight
Multiple foradownloaded video data, response speed are slow.
It can be seen that in the prior art, generating the method for thumbnail needs the support of player, and the scope of application is small.Meanwhile if
Player supports the function of generation thumbnail, and still, video thumbnail generation method of the prior art can increase server pressure
Power, extend response speed.
The content of the invention
A kind of video thumbnail generation method and generating means are provided in the embodiment of the present invention, can solve to generate video contracting
The support of player is needed during sketch map, and the problem of corresponding speed is slow.
In order to solve the above-mentioned technical problem, the embodiment of the invention discloses following technical scheme：
On the one hand, there is provided a kind of video thumbnail generation method, applied to terminal, methods described includes：
Thumbnail display request is received, the thumbnail display request includes the preview moment, and the preview moment is is asked
The broadcasting moment of files in stream media corresponding to the thumbnail asked, the preview moment are obtained by the playing progress bar of player；
According to burst list, burst address corresponding to the preview moment is obtained, the burst list includes playing the moment
With the corresponding relation of the burst address of the files in stream media, the burst is the fragment after files in stream media cutting；
According to the burst address, sending fragment request to the server, the fragment request includes the preview
Burst address corresponding to moment；
Receive burst corresponding to the preview moment of the server feedback；
The selection of key frame is carried out according to burst corresponding to the preview moment；
According to the key frame selected, thumbnail is generated；
The thumbnail is sent to the player, so that the player shows the breviary at the corresponding preview moment
Figure.
With reference in a first aspect, in the first possible implementation of first aspect, described according to burst list, acquisition is in advance
Look at before burst address corresponding to the moment, methods described also includes：
The burst list request of the files in stream media is sent to the server, to obtain described point from the server
Piece list.
With reference to the possible implementation of the first of first aspect or first aspect, second in first aspect may realization
In mode, methods described also includes：
Obtain the original address of the files in stream media；
According to the original address of the files in stream media, the local address of the files in stream media is generated, makes the broadcasting
Device obtains the original address to play the files in stream media according to the local address.
With reference to second of possible implementation of first aspect, in the third possible implementation of first aspect, root
According to the original address of the files in stream media, the local address of files in stream media is generated, including：
Obtain the Uniform Resource Identifier URI information of the original address of the files in stream media；
Obtain the port numbers of the server binding；
According to local loopback address, the port numbers and Uniform Resource Identifier URI information of binding, local address is generated.
With reference to any implementation of the third possible implementation kind of first aspect to first aspect, in first party
In the 4th kind of possible implementation in face, methods described also includes：
Obtain the historical record at the preview moment；
According to the historical record, the duration interval between the two neighboring preview moment is obtained；
The average value at multiple duration intervals is obtained as average duration；
Judge whether the mean square deviation at multiple duration intervals is less than predetermined threshold value；
If the mean square deviation is less than predetermined threshold value, is obtained from the server and estimate burst corresponding to the moment, it is described pre-
Estimate constantly for when being separated by with last preview moment at the time of a length of average duration.
Second aspect, there is provided a kind of video thumbnail generation method, applied to server, methods described includes：
The fragment request that receiving terminal is sent, the fragment request includes burst address corresponding to the preview moment, described
The broadcasting moment of preview moment files in stream media corresponding to the thumbnail asked, preview moment the broadcasting by player
Progress bar acquisition is put, the burst is the fragment after files in stream media cutting；
Obtain the burst address in the fragment request；
The burst corresponding to the preview moment according to the burst address acquisition；
Burst corresponding to the preview moment is sent to the terminal.
With reference to second aspect, in the first possible implementation of second aspect, methods described also includes：
Receive the burst list request that the terminal is sent；
The burst list is sent to the terminal.
The third aspect, there is provided a kind of video thumbnails generating means, applied to terminal, described device includes：
Thumbnail shows request reception unit, and for receiving thumbnail display request, the thumbnail shows that request includes
Preview moment, the broadcasting moment of preview moment files in stream media corresponding to the thumbnail asked, the preview moment
Obtained by the playing progress bar of player；
Burst address acquisition unit, it is described for according to burst list, obtaining burst address corresponding to the preview moment
Burst list includes playing moment and the corresponding relation of the burst address of the files in stream media, and the burst is the Streaming Media
Fragment after file cutting；
Fragment request transmitting element, for according to the burst address, sending fragment request to the server, described point
Piece request includes burst address corresponding to the preview moment；
Burst receiving unit, for receiving burst corresponding to the preview moment of the server feedback；
Selecting unit, the selection of key frame is carried out for the burst according to corresponding to the preview moment；
Thumbnail generation unit, for the key frame selected according to, generate thumbnail；
Thumbnail transmitting element, the thumbnail is sent to the player, so that the player is in corresponding preview
Moment shows the thumbnail.
With reference to the third aspect, in the first possible implementation of the third aspect, described device also includes：
Burst list acquiring unit, for sending the burst list request of the files in stream media to the server, with
The burst list is obtained from the server.
It may be realized with reference to the first of the third aspect and the third aspect, second in the third aspect may implementation
In, described device also includes：
Original address acquiring unit, for obtaining the original address of the files in stream media；
Local address generation unit, for the original address according to the files in stream media, generate the files in stream media
Local address, the player is obtained the original address according to the local address to play the files in stream media.
With reference to second of possibility implementation of the third aspect, in the third possible implementation of the third aspect, sheet
Way address generation unit is additionally operable to obtain the Uniform Resource Identifier URI information of the original address of the files in stream media；
Local address generation unit is additionally operable to obtain the port numbers of the server binding；
Local address generation unit is additionally operable to according to local loopback address, the port numbers of binding and Uniform Resource Identifier
URI information, generate local address.
Any of the third possible implementation with reference to the third aspect to the third aspect may implementation, the
In 4th kind of possible implementation of three aspects, described device also includes user behavior analysis unit, for obtaining the preview
The historical record at moment；
The user behavior analysis unit is additionally operable to according to the historical record, is obtained between the two neighboring preview moment
Duration interval；
The user behavior analysis unit is additionally operable to obtain the average value at multiple duration intervals as average duration；
The user behavior analysis unit is additionally operable to judge whether the mean square deviation at multiple duration intervals is less than predetermined threshold value；
If the user behavior analysis unit, which is additionally operable to the mean square deviation, is less than predetermined threshold value, obtained from the server
Estimate burst corresponding to the moment, it is described estimate constantly for when being separated by with last preview moment a length of average duration when
Carve.
Fourth aspect, a kind of video thumbnails generating means are additionally provided, applied to server, described device includes：
Fragment request receiving unit, the fragment request sent for receiving terminal, when the fragment request includes preview
Burst address corresponding to quarter, it is the broadcasting moment of preview moment files in stream media corresponding to the thumbnail asked, described
The preview moment is obtained by the playing progress bar of player, and the burst is the fragment after files in stream media cutting；
Burst acquiring unit, for obtaining the burst address in the fragment request, according to the burst address acquisition institute
State burst corresponding to the preview moment；
Burst transmitting element, burst corresponding to the preview moment is sent to the terminal.
With reference to fourth aspect, in the first possible implementation of fourth aspect, described device also includes fragment request
Transmitting element, the burst list request sent for receiving the terminal, sends the burst list to the terminal.
5th aspect, there is provided a kind of video thumbnails generating means, applied to terminal, described device includes：
First receiver, for receiving thumbnail display request, the thumbnail display request includes the preview moment, described
The broadcasting moment of preview moment files in stream media corresponding to the thumbnail asked, preview moment the broadcasting by player
Put progress bar acquisition；
First processor, for according to burst list, obtaining burst address corresponding to the preview moment, the burst row
Table includes playing moment and the corresponding relation of the burst address of the files in stream media, and the burst is that the files in stream media is cut
Fragment after cutting；
First transmitter, for according to the burst address, sending fragment request to the server, the fragment request
Include burst address corresponding to the preview moment；
First receiver is used to receive burst corresponding to the preview moment of the server feedback；
The first processor is additionally operable to the selection that the burst according to corresponding to the preview moment carries out key frame；
The first processor is additionally operable to the key frame selected according to, generates thumbnail；
First transmitter is additionally operable to send the thumbnail to the player, so that the player is corresponding
The preview moment shows the thumbnail.
With reference to the 5th aspect, in the first possible implementation of the 5th aspect, first transmitter is additionally operable to send out
The burst list request of the files in stream media is sent to the server, to obtain the burst list from the server.
With reference to the 5th aspect and the 5th aspect the first possible implementation, the 5th aspect second may realize
In mode, the first processor is additionally operable to obtain the original address of the files in stream media；
The first processor is additionally operable to the original address according to the files in stream media, generates the files in stream media
Local address, the player is set to obtain the original address according to the local address to play the files in stream media.
With reference to second of possible implementation of the 5th aspect, in the third possible implementation of the 5th aspect, institute
State the Uniform Resource Identifier URI information that first processor is additionally operable to obtain the original address of the files in stream media；
The first processor is additionally operable to obtain the port numbers of the server binding；
The first processor is additionally operable to according to local loopback address, the port numbers of binding and Uniform Resource Identifier
URI information, generate local address.
With reference to the 5th aspect to the 5th aspect any of the third possible implementation may implementation, the
In 4th kind of possible implementation of five aspects, the first processor is additionally operable to obtain the historical record at the preview moment；
The first processor is additionally operable to, according to the historical record, to obtain between the duration between the two neighboring preview moment
Every；
The first processor is additionally operable to obtain the average value at multiple duration intervals as average duration；
The first processor is additionally operable to judge whether the mean square deviation at multiple duration intervals is less than predetermined threshold value；
If the first processor, which is additionally operable to the mean square deviation, is less than predetermined threshold value, when being estimated from server acquisition
Burst corresponding to quarter, it is described to estimate constantly as when being separated by with last preview moment at the time of a length of average duration.
6th aspect, there is provided a kind of video thumbnails generating means, applied to server, described device includes：
Second receiver, the fragment request sent for receiving terminal, it is corresponding that the fragment request includes the preview moment
Burst address, the broadcasting moment of preview moment files in stream media corresponding to the thumbnail asked, during the preview
Carve and obtained by the playing progress bar of player, the burst is the fragment after files in stream media cutting；
Second processor, for obtaining the burst address in the fragment request, according to the burst address acquisition
Burst corresponding to the preview moment；
Second transmitter, for sending burst corresponding to the preview moment to the terminal.
With reference to the 6th aspect, in the first possible implementation of the 6th aspect, second transmitter is additionally operable to connect
The burst list request that the terminal is sent is received, sends the burst list to the terminal.
Disclose a kind of video thumbnail generation method in embodiments of the invention, in methods described, video thumbnails life
Into device according to burst list, obtain burst address corresponding to the preview moment, due to burst list include playing the moment with it is described
The corresponding relation of the burst address of files in stream media, therefore burst address corresponding to the preview moment can be obtained, so as to from service
Device gets burst corresponding to the preview moment, and key frame is selected from burst and generates thumbnail corresponding to the preview moment.This hair
The method of bright embodiment, the support without player can generate video thumbnails, while directly obtained and divided according to burst address
Piece, it is possible to reduce server stress, shorten the response time.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 show the schematic diagram that video thumbnails are shown in the video preview window；
Fig. 2 show a kind of flow chart of video thumbnail generation method of the embodiment of the present invention；
Fig. 3 show a kind of flow chart of video thumbnail generation method of the embodiment of the present invention；
Fig. 4 show a kind of data flow schematic diagram of video thumbnail generation method of the embodiment of the present invention；
Fig. 5 show a kind of schematic diagram of video thumbnails generating means of the embodiment of the present invention；
Fig. 6 show a kind of schematic diagram of video thumbnails generating means of the embodiment of the present invention；
Fig. 7 show a kind of schematic diagram of video thumbnails generating means of the embodiment of the present invention.
Embodiment
Following examples of the present invention provide a kind of video thumbnail generation method and device, and the support without player is
Video thumbnails can be generated, and improve response speed.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Whole description, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
User browses video thumbnails, then needs to be related to if desired when using player plays files in stream media
Video thumbnails generating means described in player, server and the embodiment of the present invention.Hereafter by from regarding in terminal
Illustrate the method for video thumbnails generation in terms of frequency thumbnail generating apparatus and server two.
Fig. 2 is shown the embodiments of the invention provide a kind of flow chart of video thumbnail generation method, as shown in figure 1,
Methods described is applied to terminal, and the executive agent of methods described is thumbnail generating apparatus, it is described including：
Step 201, thumbnail display request is received, the thumbnail display request includes the preview moment.
The broadcasting moment of preview moment files in stream media corresponding to the thumbnail asked, the preview moment lead to
The playing progress bar for crossing player obtains.
Thumbnail display request can be that player is sent or other have same or analogous functional unit
Send.
User is when streaming media video is watched, if it is desired to the thumbnail at some moment of preview, can pass through tune
The progress bar of whole player to preview moment, player, or other functional units can generate thumbnail display request.
Step 202, according to burst list, burst address corresponding to the preview moment is obtained.
The burst list includes playing moment and the corresponding relation of the burst address of the files in stream media.
The burst is the fragment after files in stream media cutting.
Generally, for the ease of storing, downloading or preview etc., files in stream media can be divided into multiple small fragments.Flow matchmaker
Body file is cut into burst and belongs to prior art, is not repeating herein.
Before step 202, methods described also includes：
Server described in the burst list request is sent, to obtain the burst of the files in stream media from the server
List.
Step 203, according to the burst address, sending fragment request to the server, the fragment request includes
Burst address corresponding to the preview moment.
Step 204, burst corresponding to the preview moment of the server feedback is received.
Step 205, burst carries out the selection of key frame according to corresponding to the preview moment.
There are I frames, P frames, B frames etc. in video flowing.When extracting the key frame I frames inside video, got according to related protocol
Video data corresponding to the preview moment in burst, decoding obtain wherein first I frame, when reproduction time corresponding to acquisition stabs PTS1
Between, then preview moment T1 that reproduction time is stabbed to PTS1 and user's selection is compared, difference Tdiff=T1-PTS1, if
Tdiff>0 continually looks for next I frames, until working as Tdiff<In the case of=0, stopping searching is next, and current I frames are made
For key frame；If there was only an I frame in this burst, that directly selects this I frame as key frame.
Select key frame to use other method of the prior art in the embodiment of the present invention, will not be repeated here.
Step 206, according to the key frame selected, thumbnail is generated.
Step 207, the thumbnail is sent to the player, so that the player is shown at the corresponding preview moment
The thumbnail.
In the method for the embodiment of the present invention, it is corresponding to obtain the preview moment according to burst list for video thumbnails generating means
Burst address, the corresponding relation for playing the burst address of moment and the files in stream media is included due to burst list, therefore
Burst address corresponding to the preview moment can be obtained, so as to get burst corresponding to the preview moment from server, from burst
Selection key frame simultaneously generates thumbnail corresponding to the preview moment.The method of the embodiment of the present invention, the support without player
Video thumbnails are generated, while burst is directly obtained according to burst address, it is possible to reduce server stress, reduce the response time.
The method of the embodiment of the present invention also includes：
Obtain the original address of the files in stream media；
According to the original address of the files in stream media, the local address of the files in stream media is generated, makes the broadcasting
Device obtains the original address to play the files in stream media according to the local address.
Optionally, according to the original address of the files in stream media, the local address of files in stream media is generated, including：
Obtain the Uniform Resource Identifier URI information of the original address of the files in stream media；
Obtain the port numbers of the server binding；
According to local loopback address, the port numbers and Uniform Resource Identifier URI information of binding, local address is generated.
How original address is converted to by local address with embodiment brief description below.
The original address such as http of one stream matchmaker://www.huawei.com/index.m3u8, wherein, unified resource
Identifiers, URIs information is index.m3u8.
The port numbers of server binding can be 5001, and local loopback address is 127.0.0.1, and the local address of generation is
http://127.0.0.1:5001/index.m3u8。
After local address being generated according to the original address of files in stream media, during the player plays files in stream media, meeting
Playing request is sent to the thumbnail generating apparatus of the embodiment of the present invention, thumbnail generating apparatus sends to play to server and asked
Ask, final player plays the files in stream media according to the local address of files in stream media.
The various requests of player, including thumbnail display request all generate the thumbnail sent to the embodiment of the present invention
Device, after carrying out address conversion, player only needs to pass through thumbnail without directly asking files in stream media to server
Generating means are according to local address playing stream media file.With reference to the method for viewing thumbnail of the embodiment of the present invention, can depart from
The function that player itself provides, can also obtain thumbnail.
The video thumbnail generation method of the embodiment of the present invention also includes：
Obtain the historical record at the preview moment；
According to the historical record, the duration interval between the two neighboring preview moment is obtained；
The average value at multiple duration intervals is obtained as average duration；
Judge whether the mean square deviation at multiple duration intervals is less than predetermined threshold value；
If the mean square deviation is less than predetermined threshold value, is obtained from the server and estimate burst corresponding to the moment, it is described pre-
Estimate constantly for when being separated by with last preview moment at the time of a length of average duration.
In an application scenarios in the embodiment of the present invention, it is assumed that in the historical record at preview moment, user broadcasts in video
Put 10 minutes, 15 minutes, 21 minutes, 25 minutes and obtain video thumbnails respectively, then according to above-mentioned historical record, can obtain
It is respectively 5 minutes to know the duration interval between the two neighboring preview moment, and 6 minutes, 4 minutes, be 5 minutes after average.
Assuming that the mean square deviation at above-mentioned duration interval is less than default threshold value, then in the embodiment of the present invention, in video playback
After 25 clocks, burst corresponding to the moment was obtained with the interval preview of 5 minutes, that is, obtains burst corresponding to 30 minutes.Can be with
Obtain 35 minutes, burst corresponding to the moment such as 40 minutes.
In the embodiment of the present invention, according to the historical record at preview moment, i.e., played according to the behavior of user, selection at the uniform velocity
At the time of on progress bar, burst is obtained from server in advance, it is possible to reduce user obtains thumbnail at the follow-up preview moment
Stand-by period.
Fig. 3 show a kind of flow chart of video thumbnail generation method of the embodiment of the present invention, and methods described is applied to
Server, as shown in figure 3, methods described includes：
Step 301, the fragment request that receiving terminal is sent, the fragment request is with including burst corresponding to the preview moment
Location.
The broadcasting moment of preview moment files in stream media corresponding to the thumbnail asked, the preview moment lead to
The playing progress bar for crossing player obtains, and the burst is the fragment after files in stream media cutting；
Step 302, the burst address in the fragment request is obtained.
Step 303, the burst corresponding to the preview moment according to the burst address acquisition；
Step 304, burst corresponding to the preview moment is sent to the terminal.
The method of the above embodiment of the present invention also includes：
Receive the burst list request that the terminal is sent；
The burst list is sent to the terminal.
In fact, the files in stream media on server generally all stores according to burst, each burst can correspond to one
Individual storage address, according to burst and burst address, burst list request can be generated on server, the burst list includes broadcasting
Put moment and the corresponding relation of the burst address of the files in stream media.
Terminal can obtain burst list from server in advance in playing stream media file.
After the fragment request comprising burst address for receiving terminal transmission, server can be by corresponding to the burst address points
Piece is sent to terminal, so that terminal generates video thumbnails according to burst, it is possible to reduce generate the response time of video thumbnails.
Fig. 4 show a kind of data flow schematic diagram of video thumbnail generation method of the embodiment of the present invention, in Fig. 4 only
The data flow of each step is designated, the particular content of each step refer to lower example explanation, as shown in figure 4, methods described
Including：
Step 401, video thumbnails generating means send server described in burst list request.
Step 402, server sends the burst list of stream files in stream media to video thumbnails generating means.
Step 403, user selects the preview moment by the playing progress bar of player, and generates breviary according to the preview moment
Figure shows request, sends to video thumbnails generating means.
Step 404, video thumbnails generating means receive thumbnail display request, according to burst list, when obtaining preview
Burst address corresponding to quarter.
Step 405, video thumbnails generating means send fragment request to server according to the burst address.
Step 406, server sends burst corresponding to the preview moment to video thumbnails generating means.
Step 407, video thumbnails generating means burst according to corresponding to the preview moment carries out the selection of key frame,
According to the key frame selected, thumbnail is generated
Step 408, video thumbnails generating means send the thumbnail to the player.
Step 409, player shows the thumbnail at the corresponding preview moment.
In the method for the embodiment of the present invention, it is corresponding to obtain the preview moment according to burst list for video thumbnails generating means
Burst address, the corresponding relation for playing the burst address of moment and the files in stream media is included due to burst list, therefore
Burst address corresponding to the preview moment can be obtained, so as to get burst corresponding to the preview moment from server, from burst
Selection key frame simultaneously generates thumbnail corresponding to the preview moment.The method of the embodiment of the present invention, the support without player
Video thumbnails are generated, while burst is directly obtained according to burst address, it is possible to reduce server stress, reduce the response time.
Fig. 5 show a kind of schematic diagram of video thumbnails generating means of the embodiment of the present invention, as shown in figure 5, described
Device is applied to terminal, and described device includes：
Thumbnail shows request reception unit 501, and for receiving thumbnail display request, the thumbnail shows request bag
Include the preview moment, the broadcasting moment of preview moment files in stream media corresponding to the thumbnail asked, during the preview
Carve and obtained by the playing progress bar of player；
Burst address acquisition unit 502, for according to burst list, obtaining burst address corresponding to the preview moment,
The burst list includes playing moment and the corresponding relation of the burst address of the files in stream media, and the burst is the stream
Fragment after media file cutting；
Fragment request transmitting element 503, for according to the burst address, sending fragment request to the server, institute
Stating fragment request includes burst address corresponding to the preview moment；
Burst receiving unit 504, for receiving burst corresponding to the preview moment of the server feedback；
Selecting unit 505, the selection of key frame is carried out for the burst according to corresponding to the preview moment；
Thumbnail generation unit 506, for the key frame selected according to, generate thumbnail；
Thumbnail transmitting element 507, the thumbnail is sent to the player, so that the player is corresponding pre-
Look at and show the thumbnail constantly.
In embodiments of the invention, described device also includes：
Burst list acquiring unit, for sending the burst list request of the files in stream media to the server, with
The burst list is obtained from the server.
In embodiments of the invention, described device also includes：
Original address acquiring unit, for obtaining the original address of the files in stream media；
Local address generation unit, for the original address according to the files in stream media, generate the files in stream media
Local address, the player is obtained the original address according to the local address to play the files in stream media.
In embodiments of the invention, local address generation unit is additionally operable to obtain the original address of the files in stream media
Uniform Resource Identifier URI information；
Local address generation unit is additionally operable to obtain the port numbers of the server binding；
Local address generation unit is additionally operable to according to local loopback address, the port numbers of binding and Uniform Resource Identifier
URI information, generate local address.
In embodiments of the invention, described device also includes user behavior analysis unit, for obtaining the preview moment
Historical record；
The user behavior analysis unit is additionally operable to according to the historical record, is obtained between the two neighboring preview moment
Duration interval；
The user behavior analysis unit is additionally operable to obtain the average value at multiple duration intervals as average duration；
The user behavior analysis unit is additionally operable to judge whether the mean square deviation at multiple duration intervals is less than predetermined threshold value；
If the user behavior analysis unit, which is additionally operable to the mean square deviation, is less than predetermined threshold value, obtained from the server
Estimate burst corresponding to the moment, it is described estimate constantly for when being separated by with last preview moment a length of average duration when
Carve.
The device of the embodiment of the present invention can generate video thumbnails without the support of player, while can reduce server
Pressure, shorten the response time.
Fig. 6 show a kind of schematic diagram of video thumbnails generating means of the embodiment of the present invention, applied to server, such as
Shown in Fig. 6, described device includes：
Fragment request receiving unit 601, the fragment request sent for receiving terminal, the fragment request include preview
Burst address corresponding to moment, the broadcasting moment of preview moment files in stream media corresponding to the thumbnail asked, institute
Playing progress bar acquisition of the preview moment by player is stated, the burst is the fragment after files in stream media cutting；
Burst acquiring unit 602, for obtaining the burst address in the fragment request, according to the burst address acquisition
Burst corresponding to the preview moment；
Burst transmitting element 603, burst corresponding to the preview moment is sent to the terminal.
In embodiments of the invention, described device also includes fragment request transmitting element, is sent for receiving the terminal
Burst list request, send the burst list to the terminal.
The device of the embodiment of the present invention can generate video thumbnails without the support of player, while can reduce server
Pressure, shorten the response time.
Fig. 7 show a kind of schematic diagram of video thumbnails generating means of the embodiment of the present invention, applied to terminal, such as schemes
Shown in 7, described device includes：
First receiver 701, for receiving thumbnail display request, the thumbnail display request includes the preview moment,
The broadcasting moment of preview moment files in stream media corresponding to the thumbnail asked, the preview moment pass through player
Playing progress bar obtain；
First processor 702, for according to burst list, obtaining burst address corresponding to the preview moment, described point
Piece list includes playing moment and the corresponding relation of the burst address of the files in stream media, and the burst is Streaming Media text
Fragment after part cutting；
First transmitter 703, for according to the burst address, sending fragment request to the server, the burst
Request includes burst address corresponding to the preview moment；
First receiver 701 is used to receive burst corresponding to the preview moment of the server feedback；
The first processor 702 is additionally operable to the selection that the burst according to corresponding to the preview moment carries out key frame；
The first processor 702 is additionally operable to the key frame selected according to, generates thumbnail；
First transmitter 703 is additionally operable to send the thumbnail to the player, so that the player is right
The preview moment answered shows the thumbnail.
In the embodiment of the present invention, the burst list that first transmitter 703 is additionally operable to send the files in stream media please
Ask to the server, to obtain the burst list from the server.
In the embodiment of the present invention, the first processor 702 is additionally operable to obtain the original address of the files in stream media；
The first processor 702 is additionally operable to the original address according to the files in stream media, generates the Streaming Media text
The local address of part, the player is set to obtain the original address according to the local address to play the Streaming Media text
Part.
The first processor 702 is additionally operable to obtain the Uniform Resource Identifier of the original address of the files in stream media
URI information；
The first processor 702 is additionally operable to obtain the port numbers of the server binding；
The first processor 702 is additionally operable to according to local loopback address, the port numbers of binding and uniform resource identifier
URI information is accorded with, generates local address.
In the embodiment of the present invention, the first processor 702 is additionally operable to obtain the historical record at the preview moment；
The first processor 702 is additionally operable to according to the historical record, obtain between the two neighboring preview moment when
Long interval；
The first processor 702 is additionally operable to obtain the average value at multiple duration intervals as average duration；
The first processor 702 is additionally operable to judge whether the mean square deviation at multiple duration intervals is less than predetermined threshold value；
If the first processor 702, which is additionally operable to the mean square deviation, is less than predetermined threshold value, obtained from the server pre-
Estimate burst corresponding to the moment, it is described estimate constantly for when being separated by with last preview moment a length of average duration when
Carve.
The device of the embodiment of the present invention can generate video thumbnails without the support of player, while can reduce server
Pressure, shorten the response time.
A kind of video thumbnails generating means are also disclosed in the embodiment of the present invention, applied to server, described device bag
Include：
Second receiver, the fragment request sent for receiving terminal, it is corresponding that the fragment request includes the preview moment
Burst address, the broadcasting moment of preview moment files in stream media corresponding to the thumbnail asked, during the preview
Carve and obtained by the playing progress bar of player, the burst is the fragment after files in stream media cutting；
Second processor, for obtaining the burst address in the fragment request, according to the burst address acquisition
Burst corresponding to the preview moment；
Second transmitter, for sending burst corresponding to the preview moment to the terminal.
In the embodiment of the present invention, second transmitter is additionally operable to receive the burst list request that the terminal is sent, hair
The burst list is sent to the terminal.
The device of the embodiment of the present invention can generate video thumbnails without the support of player, while can reduce server
Pressure, shorten the response time.
Disclose a kind of video thumbnail generation method and device in embodiments of the invention, in methods described, video contracting
Sketch map generating means obtain burst address corresponding to the preview moment, because burst list includes playing the moment according to burst list
With the corresponding relation of the burst address of the files in stream media, therefore burst address corresponding to the preview moment can be obtained, so as to
Burst corresponding to the preview moment is got from server, key frame is selected from burst and generates breviary corresponding to the preview moment
Figure.The method of the embodiment of the present invention, the support without player can generate video thumbnails, while direct according to burst address
Obtain burst, it is possible to reduce server stress, shorten the response time.
It is required that those skilled in the art can be understood that the technology in the embodiment of the present invention can add by software
The mode of common hardware realize that common hardware includes universal integrated circuit, universal cpu, general-purpose storage, universal elements
Deng, naturally it is also possible to application specific integrated circuit, dedicated cpu, private memory, special components and parts etc. are included come real by specialized hardware
It is existing, but the former is more preferably embodiment in many cases.Based on such understanding, the technical scheme sheet in the embodiment of the present invention
The part to be contributed in other words to prior art in matter can be embodied in the form of software product, computer software production
Product can be stored in storage medium, as read-only storage (ROM, Read-Only Memory), random access memory (RAM,
Random Access Memory), magnetic disc, CD etc., including some instructions are make it that a computer equipment (can be
People's computer, server, either network equipment etc.) perform described in some parts of each embodiment of the present invention or embodiment
Method.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.It is real especially for system
For applying example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring to embodiment of the method
Part explanation.
The embodiments of the present invention described above are not intended to limit the scope of the present invention.It is any in the present invention
Spirit and principle within the modifications, equivalent substitutions and improvements made etc., should be included in the scope of the protection.
Claims (21)
1. a kind of video thumbnail generation method, it is characterised in that applied to terminal, methods described includes：
Thumbnail display request is received, the thumbnail display request includes the preview moment, and the preview moment is asked
The broadcasting moment of files in stream media corresponding to thumbnail, the preview moment are obtained by the playing progress bar of player；
According to burst list, burst address corresponding to the preview moment is obtained, the burst list includes playing moment and institute
The corresponding relation of the burst address of files in stream media is stated, the burst is the fragment after files in stream media cutting；
According to the burst address, fragment request is sent to server, it is corresponding that the fragment request includes the preview moment
Burst address；
Receive burst corresponding to the preview moment of the server feedback；
The selection of key frame is carried out according to burst corresponding to the preview moment；
According to the key frame selected, thumbnail is generated；
The thumbnail is sent to the player, so that the player shows the thumbnail at the corresponding preview moment.
2. the method as described in claim 1, it is characterised in that it is described according to burst list, obtain and divide corresponding to the preview moment
Before piece address, methods described also includes：
The burst list request of the files in stream media is sent to the server, is arranged with obtaining the burst from the server
Table.
3. method as claimed in claim 1 or 2, it is characterised in that methods described also includes：
Obtain the original address of the files in stream media；
According to the original address of the files in stream media, the local address of the files in stream media is generated, makes the player root
The original address is obtained according to the local address to play the files in stream media.
4. method as claimed in claim 3, it is characterised in that according to the original address of the files in stream media, generation stream matchmaker
The local address of body file, including：
Obtain the Uniform Resource Identifier URI information of the original address of the files in stream media；
Obtain the port numbers of the server binding；
According to local loopback address, the port numbers and Uniform Resource Identifier URI information of binding, local address is generated.
5. method as claimed in claim 1 or 2, it is characterised in that methods described also includes：
Obtain the historical record at the preview moment；
According to the historical record, the duration interval between the two neighboring preview moment is obtained；
The average value at multiple duration intervals is obtained as average duration；
Judge whether the mean square deviation at multiple duration intervals is less than predetermined threshold value；
If the mean square deviation is less than predetermined threshold value, is obtained from the server and estimate burst corresponding to the moment, it is described when estimating
When carving to be separated by with last preview moment at the time of a length of average duration.
6. a kind of video thumbnail generation method, it is characterised in that applied to server, methods described includes：
The fragment request that receiving terminal is sent, the fragment request include burst address corresponding to the preview moment, the preview
The broadcasting moment of moment files in stream media corresponding to the thumbnail asked, the preview moment are entered by the broadcasting of player
Spend bar to obtain, the burst is the fragment after files in stream media cutting；
Obtain the burst address in the fragment request；
The burst corresponding to the preview moment according to the burst address acquisition；
Burst corresponding to the preview moment is sent to the terminal.
7. method as claimed in claim 6, it is characterised in that methods described also includes：
Receive the burst list request that the terminal is sent；
The burst list is sent to the terminal.
8. a kind of video thumbnails generating means, it is characterised in that applied to terminal, described device includes：
Thumbnail shows request reception unit, and for receiving thumbnail display request, the thumbnail display request includes preview
At the moment, at the broadcasting moment of preview moment files in stream media corresponding to the thumbnail asked, the preview moment passes through
The playing progress bar of player obtains；
Burst address acquisition unit, for according to burst list, obtaining burst address corresponding to the preview moment, the burst
List includes playing moment and the corresponding relation of the burst address of the files in stream media, and the burst is the files in stream media
Fragment after cutting；
Fragment request transmitting element, for according to the burst address, sending fragment request to server, in the fragment request
Including burst address corresponding to the preview moment；
Burst receiving unit, for receiving burst corresponding to the preview moment of the server feedback；
Selecting unit, the selection of key frame is carried out for the burst according to corresponding to the preview moment；
Thumbnail generation unit, for the key frame selected according to, generate thumbnail；
Thumbnail transmitting element, the thumbnail is sent to the player, so that the player is at the corresponding preview moment
Show the thumbnail.
9. device as claimed in claim 8, it is characterised in that described device also includes：
Burst list acquiring unit, for sending the burst list request of the files in stream media to the server, with from institute
State server and obtain the burst list.
10. device as claimed in claim 8 or 9, it is characterised in that described device also includes：
Original address acquiring unit, for obtaining the original address of the files in stream media；
Local address generation unit, for the original address according to the files in stream media, generate the sheet of the files in stream media
Way address, the player is set to obtain the original address according to the local address to play the files in stream media.
11. device as claimed in claim 10, it is characterised in that local address generation unit is additionally operable to obtain the Streaming Media
The Uniform Resource Identifier URI information of the original address of file；
Local address generation unit is additionally operable to obtain the port numbers of the server binding；
Local address generation unit is additionally operable to according to local loopback address, the port numbers of binding and Uniform Resource Identifier URI
Information, generate local address.
12. device as claimed in claim 8 or 9, it is characterised in that described device also includes user behavior analysis unit, uses
In the historical record for obtaining the preview moment；
The user behavior analysis unit is additionally operable to according to the historical record, obtain the duration between the two neighboring preview moment
Interval；
The user behavior analysis unit is additionally operable to obtain the average value at multiple duration intervals as average duration；
The user behavior analysis unit is additionally operable to judge whether the mean square deviation at multiple duration intervals is less than predetermined threshold value；
If the user behavior analysis unit, which is additionally operable to the mean square deviation, is less than predetermined threshold value, obtains and estimate from the server
Burst corresponding to moment, it is described to estimate constantly as when being separated by with last preview moment at the time of a length of average duration.
13. a kind of video thumbnails generating means, it is characterised in that applied to server, described device includes：
Fragment request receiving unit, the fragment request sent for receiving terminal, the fragment request include the preview moment pair
The burst address answered, the broadcasting moment of preview moment files in stream media corresponding to the thumbnail asked, the preview
Moment is obtained by the playing progress bar of player, and the burst is the fragment after files in stream media cutting；
Burst acquiring unit, it is pre- according to the burst address acquisition for obtaining the burst address in the fragment request
Look at burst corresponding to the moment；
Burst transmitting element, burst corresponding to the preview moment is sent to the terminal.
14. device as claimed in claim 13, it is characterised in that described device also includes fragment request transmitting element, is used for
The burst list request that the terminal is sent is received, sends the burst list to the terminal.
15. a kind of video thumbnails generating means, it is characterised in that applied to terminal, described device includes：
First receiver, for receiving thumbnail display request, the thumbnail display request includes preview moment, the preview
The broadcasting moment of moment files in stream media corresponding to the thumbnail asked, the preview moment are entered by the broadcasting of player
Bar is spent to obtain；
First processor, for according to burst list, obtaining burst address corresponding to the preview moment, the burst list bag
Include and play moment and the corresponding relation of the burst address of the files in stream media, the burst is after the files in stream media is cut
Fragment；
First transmitter, for according to the burst address, sending fragment request to server, the fragment request to include institute
State burst address corresponding to the preview moment；
First receiver is used to receive burst corresponding to the preview moment of the server feedback；
The first processor is additionally operable to the selection that the burst according to corresponding to the preview moment carries out key frame；
The first processor is additionally operable to the key frame selected according to, generates thumbnail；
First transmitter is additionally operable to send the thumbnail to the player, so that the player is in corresponding preview
Moment shows the thumbnail.
16. device as claimed in claim 15, it is characterised in that first transmitter is additionally operable to send the Streaming Media text
The burst list request of part is to the server, to obtain the burst list from the server.
17. the device as described in claim 15 or 16, it is characterised in that the first processor is additionally operable to obtain the stream matchmaker
The original address of body file；
The first processor is additionally operable to the original address according to the files in stream media, generates the local of the files in stream media
Address, the player is set to obtain the original address according to the local address to play the files in stream media.
18. device as claimed in claim 17, it is characterised in that the first processor is additionally operable to obtain the Streaming Media text
The Uniform Resource Identifier URI information of the original address of part；
The first processor is additionally operable to obtain the port numbers of the server binding；
The first processor is additionally operable to according to local loopback address, the port numbers of binding and Uniform Resource Identifier URI letters
Breath, generate local address.
19. the device as described in claim 15,16 and 18 any one, it is characterised in that the first processor is additionally operable to obtain
Take the historical record at the preview moment；
The first processor is additionally operable to according to the historical record, obtain the duration interval between the two neighboring preview moment；
The first processor is additionally operable to obtain the average value at multiple duration intervals as average duration；
The first processor is additionally operable to judge whether the mean square deviation at multiple duration intervals is less than predetermined threshold value；
If the first processor, which is additionally operable to the mean square deviation, is less than predetermined threshold value, it is constantly right to be estimated from server acquisition
The burst answered, it is described to estimate constantly as when being separated by with last preview moment at the time of a length of average duration.
20. a kind of video thumbnails generating means, it is characterised in that applied to server, described device includes：
Second receiver, the fragment request sent for receiving terminal, the fragment request include dividing corresponding to the preview moment
Piece address, at the broadcasting moment of preview moment files in stream media corresponding to the thumbnail asked, the preview moment leads to
The playing progress bar for crossing player obtains, and the burst is the fragment after files in stream media cutting；
Second processor, for obtaining the burst address in the fragment request, according to preview described in the burst address acquisition
Burst corresponding to moment；
Second transmitter, for sending burst corresponding to the preview moment to the terminal.
21. device as claimed in claim 20, it is characterised in that second transmitter is additionally operable to receive the terminal transmission
Burst list request, send the burst list to the terminal.
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| CN101957752A (en) * | 2010-09-03 | 2011-01-26 | 广州市千钧网络科技有限公司 | FLASH video previewing method and system thereof, and FLASH player |
| CN102137302A (en) * | 2010-12-09 | 2011-07-27 | 华为技术有限公司 | Method and device for playing video contents of streaming media |
| CN102238434A (en) * | 2011-07-22 | 2011-11-09 | 中兴通讯股份有限公司 | Method and system for segmenting internet protocol television (IPTV) stream media file virtually |
| CN104683858A (en) * | 2015-02-13 | 2015-06-03 | 北京数码视讯科技股份有限公司 | Preview method and device for content of stream medium |
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