CN102123281A - Fast forward and fast backward treatment method and device during video playing and mobile terminal - Google Patents
Fast forward and fast backward treatment method and device during video playing and mobile terminal Download PDFInfo
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- CN102123281A CN102123281A CN2011100026101A CN201110002610A CN102123281A CN 102123281 A CN102123281 A CN 102123281A CN 2011100026101 A CN2011100026101 A CN 2011100026101A CN 201110002610 A CN201110002610 A CN 201110002610A CN 102123281 A CN102123281 A CN 102123281A
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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
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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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
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Abstract
The invention provides a fast forward and fast backward treatment method and device during video playing and a mobile terminal. The method comprises the steps of: acquiring the playing staring time of each I-frame in a video file in advance; skipping to the playing starting time of the next I-frame in sequence when the fast forward operation is carried out; and skipping to the playing starting time of the former I-frame in sequence when the fast backward operation is carried out. Through the invention, the experience of a user is improved.
Description
Technical field
The present invention relates to the communications field, fast forwarding and fast rewinding processing method, device and portable terminal during in particular to a kind of video playback.
Background technology
At present, widely used video file mainly contains I frame, P frame, three kinds of frame types of B frame.Below this is described respectively.I frame (being also referred to as intracoded frame) is a kind of independent frame that carries full detail, and first frame in the video sequence all is the I frame all the time, and it need not just can independently decode with reference to other image.If the bit stream that is transmitted is destroyed, then need the I frame as the starting point of new reader or synchronous points again.
P frame (also becoming the inter prediction encoding frame) need just can be encoded with reference to the I frame of front and/or the different piece of P frame.Compare with the I frame, the P frame takies data bit still less usually, but because the P frame has complicated dependence to the P of front and I reference frame, therefore very responsive to error of transmission.
B frame (being also referred to as the bi-directional predictive coding frame) needs simultaneously frame with the frame of front and back as the reference frame.
At present, have following several to the processing of just carrying out F.F., rewind down function at displaying video:
A kind of is when F.F., rewind down, on one side F.F. decode on one side, this method need be when fast forwarding and fast rewinding the content of removing to analyze video of frame one by one, decoding causes speed slow then.Its improved method is to analyze the type of each frame when F.F., rewind down, just decodes if this frame is the I frame, if not then continuing F.F. or rewind down.Yet Cao Zuo defective is that service speed is slow like this, generally is applicable to PC or the processor equipment than higher-end.
Another kind method is the time point that F.F., the fast reverse operation according to the user jumps to the progress bar appointment, seeks a nearest I frame position from this time point then, goes out to begin decoding from this I frame position then.This method service speed ratio is very fast, but the progress bar time is inaccurate.Because the interval between the I frame is a standard not, so the position when regular meeting produces reproduction time and do not rest on search and finish, progress bar will be forward or the phenomenon of jumping backward.And the reason that produces this jump is exactly because F.F. is finished the rear video decoder and needed decoding again, and this decoding must be from a nearest I frame, and the concluding time of user's F.F., rewind down P frame or B frame often, so decoder need search the position of a nearest I frame again on the basis of user's F.F., rewind down, and the interval between two I frames often needs several seconds even more than 10 times in second, therefore, the user can feel obviously that then search finishes the back progress bar and produces obvious chattering, causes influencing user's visual experience.
In summary, the processing of the fast forwarding and fast rewinding of video file all has problems in the prior art.
Summary of the invention
Fast forwarding and fast rewinding processing method, device and portable terminal when main purpose of the present invention is to provide a kind of video playback are one of to address the above problem at least.
According to an aspect of the present invention, the fast forwarding and fast rewinding processing method comprised: the play start time of obtaining each I frame in the video file in advance when a kind of video playback was provided; When carrying out forwarding operation, jump to the play start time of next I frame successively; When carrying out fast reverse operation, jump to the play start time of previous I frame successively.
Preferably, in getting access to described video file, after the play start time of each I frame,, and be kept in the memory buffer the play start time generation I frame index table of described each I frame; When carrying out forwarding operation, by reading the play start time that described I frame index table jumps to next I frame successively; When carrying out fast reverse operation, by reading the play start time that described I frame index table jumps to previous I frame successively.
Preferably, total number of also preserving the I frame in the described video file in the described I frame index table.
Preferably, when the form of described video file is 3gp or MP4, the play start time of obtaining each I frame in the video file comprises: the content that reads the STSS of described video file gets access to the frame number of each I frame in the described video file, and the content that reads the STTS of described video file gets access to the play start time of each I frame in the described video file.
Preferably, when carrying out forwarding operation, when the I frame that jumps to is last I frame in the described video file, if continue to carry out forwarding operation then play end; When carrying out fast reverse operation,, then start anew to play if the I that jumps to station is first I frame in the described video file.
According to another aspect of the present invention, fast forwarding and fast rewinding processing unit when a kind of video playback also is provided comprises: the video parsing module is used for obtaining the play start time of each I frame of video file; Processing module is used for jumping to the play start time of next I frame successively when carrying out forwarding operation; When carrying out fast reverse operation, jump to the play start time of previous I frame successively.
Preferably, described video parsing module is used for after the play start time that gets access to each I frame of described video file, with the reproduction time generation I frame index table of described each I frame, and is kept in the memory buffer; Described processing module is used for when carrying out forwarding operation, by reading the play start time that described I frame index table jumps to next I frame successively; When carrying out fast reverse operation, by reading the play start time that described I frame index table jumps to previous I frame successively.
Preferably, total number of also preserving the I frame in the described video file in the described I frame index table.
Preferably, when the form of described video file is 3gp or MP4, the content that described video parsing module is used for reading the STSS of described video file gets access to the frame number of each I frame of described video file, and the content that reads the STTS of described video file gets access to the play start time of each I frame in the described video file.
According to another aspect of the present invention, also provide a kind of portable terminal, fast forwarding and fast rewinding processing unit when comprising above-mentioned video playback.
By the present invention, solved the problem that exists during the video file fast forwarding and fast rewinding is handled in the prior art, improved user experience.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of fast forwarding and fast rewinding processing method during according to the video playback of the embodiment of the invention;
Fig. 2 is the structured flowchart of fast forwarding and fast rewinding processing unit during according to the video playback of the embodiment of the invention;
Fig. 3 is according to the schematic diagram of 3gp related in the embodiment of the invention, MP4 file basic format;
Fig. 4 is the structured flowchart according to the mobile phone player of the embodiment of the invention;
Fig. 5 is according to the tabular schematic diagram of embodiment of the invention I frame index;
Fig. 6 is the flow chart that generates I frame time buffering area according to the embodiment of the invention;
Fig. 7 is the flow chart that carries out F.F., fast reverse operation according to the embodiment of the invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
In the present embodiment, fast forwarding and fast rewinding processing method when a kind of video playback is provided, this method can be applied to carry out in the terminal that fast forwarding and fast rewinding handles, for example, and portable terminal.Fig. 1 is the flow chart of fast forwarding and fast rewinding processing method during according to the video playback of the embodiment of the invention, and as shown in Figure 1, this flow process may further comprise the steps:
S102 obtains the play start time of each I frame in the video file in advance;
S104 when carrying out forwarding operation, jumps to the play start time of next I frame successively; When carrying out fast reverse operation, jump to the play start time of previous I frame successively.
Pass through above-mentioned steps, can be before carrying out the fast forwarding and fast rewinding processing, get access to the play start time of each I frame, thereby at fast forwarding and fast rewinding is the play start time of leaping to next I frame, compare with existing two kinds, avoided the problem of jump occurring under the prerequisite faster at the service speed ratio, thereby improved user experience.
Preferably, when implementing, can be in getting access to video file after the play start time of each I frame, the play start time of each I frame is generated I frame index table, and be kept in the memory buffer; When carrying out forwarding operation, by reading the play start time that I frame index table jumps to next I frame successively; When carrying out fast reverse operation, by reading the play start time that I frame index table jumps to previous I frame successively.Mode by concordance list realizes than being easier to, and can certainly adopt other mode to write down the play start time of each the I frame that gets access to.Preferably, in order to prevent that access memory is crossed the border the total number that can also preserve the I frame in the video file in this I frame index table when searching for.
When implementing, can obtain the play start time of each I frame according to the difference of the form of video file, need to prove that no matter the play start time which kind of mode to obtain each I frame by does not all influence the embodiment of present embodiment, below describe by way of example.For example, when the form of video file is 3gp or MP4, the content of STSS that can be by reading video file gets access to the frame number of each I frame in this video file, and the content that reads the STTS of this video file gets access to the play start time of each I frame in this video file.
Preferably, when implementing,, can also increase the judgement of last I frame and first I frame in order further to improve user experience.For example, when carrying out forwarding operation, when the I frame that jumps to is last I frame in the video file,, the user plays end if continuing to carry out forwarding operation; When carrying out fast reverse operation,, then start anew to play if the I that jumps to station is first I frame in the video file.
In the present embodiment, fast forwarding and fast rewinding processing unit when a kind of video playback also is provided, this device can be applied in the portable terminal, this device is used to realize the foregoing description and preferred implementation thereof, carried out repeating no more of explanation, only the module that relates in this device had been described below.Fig. 2 is the structured flowchart of fast forwarding and fast rewinding processing unit during according to the video playback of the embodiment of the invention, and as shown in Figure 2, this structure comprises: video parsing module 22 and processing module 24 are explained below.
Video parsing module 22 is used for obtaining the play start time of each I frame of video file; Processing module 24 is connected to video parsing module 22, and this module is used for jumping to the play start time of next I frame successively when carrying out forwarding operation; When carrying out fast reverse operation, jump to the play start time of previous I frame successively.
Preferably, video parsing module 22 is used for after the play start time that gets access to each I frame of video file, with the reproduction time generation I frame index table of each I frame, and is kept in the memory buffer; Processing module 24 is used for when carrying out forwarding operation, by reading the play start time that I frame index table jumps to next I frame successively; When carrying out fast reverse operation, by reading the play start time that above-mentioned I frame index table jumps to previous I frame successively.
Preferably, also preserve total number of the I frame in the video file in the I frame index table.
Preferably, when the form of video file is 3gp or MP4, the content that video parsing module 22 is used for reading the STSS of video file gets access to the frame number of each I frame of video file, and the content that reads the STTS of video file gets access to the play start time of each I frame in the video file.
By present embodiment, before displaying video, obtain the information of I frame in advance, and generate an I frame index table, when F.F., rewind down, operate then according to this concordance list.Need to resolve frame by frame the problem that causes speed very slow in the prior art thereby overcome, and resolve and directly be fast-forward to the fixed time then in the problem of searching the jump that the I frame causes again, promote speed and the accuracy of F.F., rewind down, improved user's experience.
Below be that example describes with the video file of 3gp and MP4 form.
In order better to describe, at first these two kinds of video file formats of 3gp and MP4 to be analyzed, these two kinds of video file formats are seemingly closer.Fig. 3 is according to the schematic diagram of 3gp related in the embodiment of the invention, MP4 file basic format, and the video file of 3gp and MP4 form includes file type, video heads information, video data district three parts.In 3gp and MP4 file, all configuration informations and data message are according to the pattern configurations of former subtree.Configuration root atom is the moov atom, and data root atom is the mdat atom.A lot of trak atoms are arranged in the moov atom, and the trak atom is used for representing different audio frequency and video specifying informations.The trak that the expression audio frequency is deposited information is an audio track, and what the expression video was deposited information is video track.Wherein, it is frame of video or audio frame that the sub-atom hdlr atom among each trak can be discerned this frame, represents frame of video if Hdlr is " vide ", if Hdlr then represents audio frame for " soun ".
Two sub-atom STSS and STTS are arranged among each trak, and this configuration block of STSS has mainly been described the frame number of all I frames of this video.Be explained below.
The STSS atom
00000024 length
73747373 STSS indicate
00000000 version information
The total number of 00000005 I frame
00000001 I frame index
0000001F
0000003D
0000015B
00000279
This configuration block of STTS has been described the reproduction time of these all frames of video, and unit is a millisecond.Be explained below.
The STTS atom
0000E790 length
73747473 STTS indicate
00000000 version information
The total number of 00001C F0
00000001 frame number, a frame
The frame time length of this frame of 00000B BB
The 00000002 same time span of two frames next
The frame time length of 00001197 this two frame
00000001
00000B?BB
00000001
0000119A
In the present embodiment, obtain total what the I frames of this video according to the content that reads STSS before video begins to play.Distribute a memory buffer according to the quantity of I frame then.Read the content of STTS, and, calculate the reproduction time of each I frame according to the sequence number of I frame.When the user needs F.F. or rewind down,, at every turn forward, perhaps jump to certain I frame backward the time and determine the time according to the position of I frame in the memory buffer.The time that so each user sees all is the time of an I frame, and decoder can begin to decode again from this time.
By this preferred embodiment, before displaying video, obtain the information of I frame in advance, and generate an I frame index table, when F.F., rewind down, operate then according to this concordance list, can promote the speed and the accuracy of F.F., rewind down like this, promote user experience, especially on low-end mobile phone, can effectively promote user experience.
Be that example describes with the player on the mobile phone below.
Fig. 4 is the structured flowchart according to the mobile phone player of the embodiment of the invention, as shown in Figure 4, this mobile phone player comprises: video parsing module 10, video decode module 20, player UI module 30, player top control module 40 are (wherein, player top control module, player UI module, video decode module have realized the function of above-mentioned processing module), wherein player top control module 40 is responsible for calling video parsing module 10 and is read the video file relevant configuration information, finishes initial work.After initialization is finished, the player top control module, control of video parsing module 10 comes reading video data, and calls video decode module 20 and come played data, and player UI module 30 reads the video playback time with the fixing cycle simultaneously, refreshes player interface.
In the present embodiment, can be before displaying video by software approach, utilize video parsing module 10 to obtain the information of I frame in advance, and generate an I frame index table, Fig. 5 is according to the tabular schematic diagram of embodiment of the invention I frame index, as shown in Figure 5, this table comprises the number of I frame, and the reproduction time of each I frame, then when the user carries out at F.F., rewind down to video file, operate according to this concordance list, can promote the speed and the accuracy of F.F., rewind down so greatly, promote user experience.
Fig. 6 is the flow chart (need to prove, do not relate to module in Fig. 6, combine module and describe in the description of following steps) that generates I frame time buffering area according to the embodiment of the invention, and this flow process comprises the steps:
Step S601, player top control module 40 calls video parsing module 10 and analyzes video, and video parsing module 10 is resolved the content of video file, obtains video trak.
Step S602, video parsing module 10 is resolved video trak, obtains the concrete data of the STSS and the STTS of this video, and these data are read in internal memory.
Step S603, video parsing module 10 is analyzed the content of STSS, obtains total what the I frames of this video, distributes a memory buffer according to the quantity of I frame then.
Step S604, video parsing module 10 reads the content of STTS according to the content of resolving, and obtains the time span of each frame.
Step S605, video parsing module 10 utilize every frame time length information of STTS according to the sequence number of I frame, calculate the play start time of each I frame.
Step S606, video parsing module 10 is saved in the reproduction time of total number of I frame and all I frames in the memory buffer.Generate I frame index table, the purpose of preserving total number is to avoid access memory to cross the border when search.
After generating I frame time buffering area, the user can carry out the operation of F.F. or rewind down to file, and Fig. 7 is the flow chart that carries out F.F., fast reverse operation according to the embodiment of the invention, and this flow process comprises the steps:
Step S701 carries out F.F. or fast reverse operation.
Judge that whether the current I frame is last the I frame on user's direction of operating, if not execution in step S702 then, if words execution in step S704 then.
Step S702 obtains the index of the next I frame of user's direction of operating in I frame index table according to the current time, and obtains the time of next I frame, and user's F.F. time, then player UI module 30 refreshed progress bar when equaling this I frame time.
Step S703 is fast-forward to the time of next I frame, and notifies player UI module 30 to draw progress bars.
Step S704, if fast reverse operation, and if the current I frame be first frame then start anew to play, if forwarding operation, and if the current I frame be last frame then finish to play.
If not last I frame, then continue to handle.
Through above operation, the time that each user sees all is the time of an I frame, so also can not produce time step phenomenon behind the EO.So just can comparatively effectively promote the visual experience of user when operation.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, carry out by calculation element thereby they can be stored in the storage device, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. fast forwarding and fast rewinding processing method during a video playback is characterized in that, comprising:
Obtain the play start time of each I frame in the video file in advance;
When carrying out forwarding operation, jump to the play start time of next I frame successively; When carrying out fast reverse operation, jump to the play start time of previous I frame successively.
2. method according to claim 1 is characterized in that,
In getting access to described video file, after the play start time of each I frame,, and be kept in the memory buffer the play start time generation I frame index table of described each I frame;
When carrying out forwarding operation, by reading the play start time that described I frame index table jumps to next I frame successively;
When carrying out fast reverse operation, by reading the play start time that described I frame index table jumps to previous I frame successively.
3. method according to claim 2 is characterized in that, total number of also preserving the I frame in the described video file in the described I frame index table.
4. according to each described method in the claim 1 to 3, it is characterized in that when the form of described video file was 3gp or MP4, the play start time of obtaining each I frame in the video file comprised:
Read described video file storage the content of sequence number STSS of each I frame get access to the frame number of each I frame in the described video file, the content of temporal information STTS that reads each frame of storage of described video file gets access to the play start time of each I frame in the described video file.
5. method according to claim 1 is characterized in that,
When carrying out forwarding operation, when the I frame that jumps to is last I frame in the described video file, if continue to carry out forwarding operation then play end; When carrying out fast reverse operation,, then start anew to play if the I that jumps to station is first I frame in the described video file.
6. fast forwarding and fast rewinding processing unit during a video playback is characterized in that, comprising:
The video parsing module is used for obtaining the play start time of each I frame of video file;
Processing module is used for jumping to the play start time of next I frame successively when carrying out forwarding operation; When carrying out fast reverse operation, jump to the play start time of previous I frame successively.
7. device according to claim 6 is characterized in that,
Described video parsing module is used for after the play start time that gets access to each I frame of described video file, with the reproduction time generation I frame index table of described each I frame, and is kept in the memory buffer;
Described processing module is used for when carrying out forwarding operation, by reading the play start time that described I frame index table jumps to next I frame successively; When carrying out fast reverse operation, by reading the play start time that described I frame index table jumps to previous I frame successively.
8. device according to claim 7 is characterized in that, total number of also preserving the I frame in the described video file in the described I frame index table.
9. device according to claim 6, it is characterized in that, when the form of described video file is 3gp or MP4, the content that described video parsing module is used for reading the STSS of described video file gets access to the frame number of each I frame of described video file, and the content that reads the STTS of described video file gets access to the play start time of each I frame in the described video file.
10. a portable terminal is characterized in that, fast forwarding and fast rewinding processing unit when comprising in the claim 6 to 9 each described video playback.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100026101A CN102123281A (en) | 2011-01-07 | 2011-01-07 | Fast forward and fast backward treatment method and device during video playing and mobile terminal |
| PCT/CN2011/071650 WO2012092725A1 (en) | 2011-01-07 | 2011-03-09 | Method, device and mobile terminal for processing fast forward/fast backward during video playing |
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| CN2011100026101A CN102123281A (en) | 2011-01-07 | 2011-01-07 | Fast forward and fast backward treatment method and device during video playing and mobile terminal |
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| CN103957471A (en) * | 2014-05-05 | 2014-07-30 | 华为技术有限公司 | Network video playing method and device |
| US10476928B2 (en) | 2014-05-05 | 2019-11-12 | Huawei Technologies Co., Ltd. | Network video playback method and apparatus |
| CN105451073A (en) * | 2015-11-16 | 2016-03-30 | 深圳Tcl数字技术有限公司 | MP4 video source transmission method and apparatus |
| CN105451073B (en) * | 2015-11-16 | 2018-11-02 | 深圳Tcl数字技术有限公司 | The transfer approach and device of MP4 video sources |
| CN105916035A (en) * | 2015-12-15 | 2016-08-31 | 乐视致新电子科技（天津）有限公司 | Display method for quick positioning of playing time point and display device thereof |
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| CN106385633B (en) * | 2016-09-27 | 2019-12-10 | 深圳市九洲电器有限公司 | Personal video recording method and system |
| CN106658201A (en) * | 2017-01-13 | 2017-05-10 | 北京元心科技有限公司 | Method and device for optimizing progress bar of player |
| CN106658201B (en) * | 2017-01-13 | 2019-08-06 | 北京元心科技有限公司 | Method and device for optimizing progress bar of player |
| CN108200434A (en) * | 2017-12-25 | 2018-06-22 | 四川迪佳通电子有限公司 | Flow media playing method and system |
| CN110072123A (en) * | 2018-01-24 | 2019-07-30 | 中兴通讯股份有限公司 | A kind of recovery playback method, video playing terminal and the server of video |
| CN110072123B (en) * | 2018-01-24 | 2022-04-15 | 中兴通讯股份有限公司 | Video recovery playing method, video playing terminal and server |
| CN114501166A (en) * | 2021-11-18 | 2022-05-13 | 武汉市烽视威科技有限公司 | DASH on-demand fast-forward and fast-backward method and system |
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| WO2012092725A1 (en) | 2012-07-12 |
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