CN103024561B - A kind of display methods and device that pulls progress bar - Google Patents
A kind of display methods and device that pulls progress bar Download PDFInfo
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Abstract
The invention provides a kind of display methods and device that pulls progress bar, while pulling by user, the time point of progress bar finds corresponding nearest timestamp in key frame index, and obtain byte offsets according to timestamp, then from video file, obtained key frame data by byte offsets and show this key frame. Therefore, in the time that user pulls continuously, without calculating present frame, substituting present frame with key frame shows real-time, avoid searching key frame and calculated the problem of the delay too frequently the causing demonstration of present frame, realized instant playback, improved the experience of user's fluency.
Description
Technical field
The present invention relates to video playback field, especially a kind of video playback pulls the display methods of progress barAnd device.
Background technology
Along with the development of computer technology and network technology, utilize the terminal such as personal computer, mobile phone onlineOr the various video files of local broadcasting are to become a kind of leisure way of people.
Existing video display devices mainly comprises the player module and the User Interface that run on terminalModule, as shown in Figure 1. Video display devices is in the time playing local video, by broadcasting in player modulePut in controller unit Control and Schedule data communication interface unit and document reading unit reading terminals and store mouldThe video file of storage in piece, through audio frequency and video separative element separating audio and video data, and respectivelyBy being played up by Voice & Video rendering unit again after Voice & Video decoding unit decodes, finally sendGive audio playing apparatus and User Interface module. User Interface module receipt decoding and play up afterVideo data through playing Logic control module control, be shown to user by broadcast window, user canBy the progress bar in broadcast window, the video of playing is pulled.
In the time that video display devices is play online, arrange one and connect respectively player module and networkThe transmission control unit (TCU) module of server, transmission control unit (TCU) module is by the video receiving from online video serverDocument data flow is kept in the memory module in terminal temporarily, then by player module and userInteractive interface module is presented to user.
User, in the time watching video, can pull video according to interest conventionally, and existing video showsDevice, if Storm Player, realplayer, windowsmediaplayer etc. are in pulling progress barThe general mode that adopts present frame location, the frame of location is parked the time by determining player progress barPresent frame, and broadcast window show be current frame image. Specifically, once drag userDrop after work, determine time point according to progress bar, obtain timestamp by time point, and pass through timestampFind the key frame corresponding with timestamp, decode present frame by key frame again finding after key frame.But, in the time that user pulls continuously, within the regular hour, continue to pull progress bar, progress barThe time point of parking is discontinuous, and accordingly present frame being calculated to required amount of calculation can be very large, and user needsWait for until find key frame and by key frame calculates demonstration present frame, pull consecutive hours at progress bar,Because search key frame and calculate the too frequent of present frame, therefore can there is the problem of display delay, rightLocal storage file, cannot instant playback present frame, especially, for online broadcasting, hasBuffering, therefore can cause user to experience not good for a long time.
Summary of the invention
The invention provides a kind of display methods and device that pulls progress bar, solve in prior art due to continuouslyWhat pull that progress bar causes cannot show present frame in time, and buffer time is long, and user experiences not good problem.
The technological means that the present invention takes is as follows: a kind of display methods that pulls progress bar, comprising:
In the time pulling progress bar, obtain some time points that pull with unit interval;
In the key frame index of video file, search with to pull time point corresponding according to the time point that pulls obtainingNearest timestamp;
Obtain byte offsets according to described nearest timestamp, and find with described nearest according to byte offsetsSome key frame data that timestamp is corresponding also show described key frame.
Further, before the display methods that pulls progress bar described in carrying out, also comprise and judge whether drag motions connectsContinuous step, is non-drag operation if current, obtains single progress bar and pulls time point, when pullingBetween point determine nearest timestamp, and look for corresponding key frame by described nearest timestamp, and according to passKey frame decoding goes out present frame, shows present frame.
Further, described method pulls after time point obtaining series, also comprises inquiry video file key frame ropeThe step of drawing, if inquire about unsuccessfully, obtains single progress bar and pulls time point, determines recently by time pointTimestamp, and find corresponding key frame by timestamp, and decode present frame according to key frame, aobviousShow present frame.
Further, described video file key frame index obtains or passes through network from be stored in local video fileServer is downloaded key frame index corresponding Online Video file to obtain.
Further, if when the video file of described broadcasting is Online Video file, pulls progress bar and determine while pullingBetween point, also comprise step: judge whether to store in this locality key frame index, if NO, download crucialFrame index, obtains progress bar and parks the nearest timestamp that time point is corresponding, determines byte offsets, and according toByte offsets is downloaded this nearest key frame data by network, continues former video literary composition at player interface simultaneouslyThe broadcasting of part, until the download of described key frame data is complete, is finally obtained the pass corresponding with described nearest timestampKey frame data also show.
Further, described key frame index is key frame time point and the corresponding rope of numerical value that represents byte offsetsDraw information table.
The present invention also provides a kind of video display devices, comprise run on the player module of terminal and with broadcastPut the User Interface module that device module connects;
Wherein, described User Interface module comprises that broadcast window unit, the play position with progress bar establishPut unit and memory cell, and the broadcasting logic control element that said units is dispatched; Described broadcastingDevice module comprises video file reading processing unit and playing controller unit;
The video file key frame index that described memory cell arrives for storing received;
Described play position setting unit, in the time pulling progress bar, is obtained some pulling with unit intervalTime point;
What described broadcasting logic control element obtained according to play position setting unit pulls time point inquiry storageKey frame index in unit is also determined the nearest timestamp corresponding with pulling time point, and according to described nearestTimestamp obtain byte offsets;
Described playing controller unit is used for according to crucial described in the request receiving of described broadcasting logic control elementFrame index and by described key frame index stores to described memory cell, also for according to the control of described broadcasting logicThe byte offsets control video file reading processing unit that unit processed provides reads and described nearest timestampCorresponding key frame data forms key frame, and key frame is shown in broadcast window unit.
Further, whether described broadcasting logic control element is also continuous for judging described drag motions, and when sentencingWhile breaking as non-drag operation, control play position setting unit is obtained single progress bar and is pulled time point, passes throughPull time point and determine nearest timestamp; Play logic control element also for passing through the described nearest timeStamp is looked for corresponding key frame, and controls video file reading processing unit and read key frame and decode present frame,And control broadcast window unit show present frame.
Further, described broadcasting logic control element is also for failed when inquiring about video file key frame index,Obtain single progress bar and pull time point, determine nearest timestamp by time point; Play logic control listUnit is also for looking for corresponding key frame by described nearest timestamp, and control video file reads processing listUnit reads key frame and decodes present frame, and controls broadcast window unit demonstration present frame.
Further, described playing controller unit is by obtaining in local video file or pass through network being stored inServer is downloaded and is obtained key frame index video file key frame index corresponding to Online Video file.
Further, described key frame index is that reproduction time is believed with the manipulative indexing of the numerical value that represents byte offsetsBreath table.
Further, described playing controller unit also for the video file that judges described broadcasting whether for looking onlineFrequency file;
Described broadcasting logic control element is also Online Video file for working as described playing controller unit judgesTime, judge whether to store in this locality key frame index, if NO, download, and control play position and establishPutting unit obtains progress bar and parks the nearest timestamp that time point is corresponding;
Described playing controller unit is further used in key frame index, determining byte according to nearest timestampSide-play amount, and download this nearest key frame data according to described byte offsets by network;
Described broadcasting logic control element is further used for controlling described broadcast window unit and continues former video fileBroadcasting until obtain the key frame data corresponding with described nearest timestamp and control broadcast window unit showKey frame.
The present invention also provides a kind of terminal, it is characterized in that, comprises the storage of storing described video fileModule and video display devices as above.
Further, described terminal also comprises for obtain Internet video data from network video serverThe transmission control unit (TCU) of stream; Wherein, described transmission control unit (TCU) comprises with described player and memory module and being connectedFirst interface module, the second interface module and the transmission control module being connected with network video server,Described transmission control module is used for obtaining Internet video data flow by described the second interface module, and by netNetwork video data stream offers described player by first interface, and by interim this Internet video data flowBe stored in described memory module.
The invention provides a kind of display methods and device that pulls progress bar, progress while pulling by userThe time point of bar finds corresponding nearest timestamp in key frame index, and obtains byte according to timestampSide-play amount, then from video file, obtained key frame data by byte offsets and show this key frame. CauseThis, in the time that user pulls continuously, without calculating present frame, substitute present frame with key frame fast in real timeSpeed shows, has avoided searching key frame and has calculated the problem too frequently of present frame, has realized instant aobviousShow, improved the fluency that user experiences.
Brief description of the drawings
Fig. 1 is the existing terminal schematic diagram that comprises video display devices;
Fig. 2 is a kind of flow chart that pulls display methods of the present invention;
Fig. 3 be play Online Video file pull display methods flow chart;
Fig. 4 is a kind of terminal schematic diagram that comprises video display devices of the present invention.
Detailed description of the invention
Realization of the present invention is the consideration based on such, and existing video file can be realized with following sideFormula is stored in the memory module of terminal:
| P1 | P2 | P3 |
| File header | Video data | Key frame index |
Video file comprises three parts, and Part I P1 is file header, and Part II P2 is video countsAccording to, Part III P3 is for representing key frame index.
Video file key frame index can be the right of reproduction time t and the numerical value n that represents byte offsetsAnswer index information table, as shown in the table,
| Time (t) | 1s | 2s | 3s | 4s | 5s | 6s | 7s | ...... |
| Byte offsets (n) | 70 | 45 | 30 | 12 | 90 | 31 | 50 | ...... |
By the document misregistration amount of video data corresponding to this index information table inquiry special time, can be by ropeNumerical value n (byte offsets) in fuse breath and the video data in packet are set up unique correspondingRelation, thus can obtain corresponding video data according to reproduction time.
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example is only for explaining thisInvention, is not intended to limit scope of the present invention.
As shown in Figure 2 for a kind of a kind of embodiment that pulls display methods of the present invention, comprising:
Steps A: judging whether video playback exists pulls, continues to play, if judgement pulls moving if notDo whether continuous, if otherwise obtain the single time point that pulls, determine the nearest time by pulling time pointStamp, and look for corresponding key frame by timestamp, and decode present frame according to key frame, show present frame.
Pulling continuously herein refers to the time point change continuously in time that pulls the progress bar of certain hour as mouseThe action of changing, and discontinuous pulling refers to the single time change of clicking certain time point as mouse on progress barThe action of changing.
Obtain and a series ofly perform step B after pulling time point with unit interval; In present embodiment, this is singleBit time interval is 0.1 second.
Step B: inquiry video file key frame index, unsuccessfully obtains single progress bar if inquire about and pulls the timePoint, determines nearest timestamp by time point, and finds corresponding key frame by timestamp, and according toKey frame decodes present frame, shows present frame, if success performs step C;
Step C: obtain video file key frame index, the key frame according to the time point obtaining at video fileIn index, search the nearest timestamp corresponding with pulling time point, and obtain in video file key frame indexByte offsets;
Step D: find the some key frame data corresponding with nearest timestamp aobvious according to byte offsetsShow.
As a kind of embodiment, in the time playing the video file of local storage, user is to the video literary composition of playingPart carries out after drag motions, first to user's drag motions whether for pulling and judge continuously, ifPull for disposable, obtain the single time point pulling, determine the nearest time by pulling time pointStamp, and look for corresponding key frame by timestamp, and decode present frame according to key frame, show currentFrame.
If drag motions is for pulling continuously, within the regular hour, carry out drag motions, with unitThe time interval is obtained a series of time point that pulls, and inquires about video file key frame index (index informationTable), if inquire about unsuccessfully, the video file that store this locality does not represent video file key frame indexWhen index information table,, still according to the mode of the present frame location of available technology adopting, locateFrame is for determining the present frame of player time that progress bar is parked, and broadcast window shows current frame image;If successful inquiring, obtains this index information table, according to the some keys of time point at video file that pullIn frame index, search the nearest timestamp corresponding with pulling time point, and in video file key frame indexObtain byte offsets, find the some crucial frame number corresponding with nearest timestamp according to byte offsetsAccording to also showing.
As another kind of embodiment, in the time that the video file of playing is Online Video file, user is to playingVideo file carry out after drag motions, first to user's drag motions whether for pulling and sentence continuouslyDisconnected, disposable pulling if, obtains the single time point pulling, still according to adopting in prior artWith the mode of present frame location, the frame of location ought for what determine the player time that progress bar is parkedFront frame, and broadcast window shows current frame image.
Same, if drag motions is for pulling continuously, within the regular hour, carry out drag motions,Obtain a series of time point that pulls with unit interval, and inquire about video file key frame index (ropeDraw information table), if inquire about unsuccessfully, in Online Video file, do not represent video file key frame indexIndex information table time, still according to the mode of the present frame location of available technology adopting, i.e. locationFrame for determining the present frame of player time that progress bar is parked, and broadcast window shows present frame figurePicture; If successful inquiring, enters this index information table by the webserver at Online Video file placeRow is downloaded to obtain this index information table, and obtain single video playback and pull timestamp according to pulling time point,And in index information table, search the byte offsets corresponding with this timestamp; Finally utilize this byte offsetAmount is found this nearest key frame data in the Online Video file data bag of the interim storage in this locality, if localIn the video data of interim storage, do not have this nearest key frame data, download this by network and close recentlyKey frame data, and continue former video file broadcasting until described key frame data download complete, obtain withThe key frame data that described nearest key frame information is corresponding also shows.
The present invention also provides a kind of video display devices and has comprised the terminal of video display devices, asShown in Fig. 4:
Video display devices comprises the user who runs on the player module of terminal and be connected with player moduleInteractive interface module;
Wherein, User Interface module comprises that broadcast window unit, the play position with progress bar arrange listUnit and memory cell, and the broadcasting logic control element that said units is dispatched; Player module bagDraw together video file reading processing unit and playing controller unit;
The video file key frame index that memory cell arrives for storing received;
Play position setting unit, in the time pulling progress bar, is obtained some time that pulls with unit intervalPoint;
What broadcasting logic control element obtained according to play position setting unit pulls time point inquiry memory cellIn key frame index and determine the nearest timestamp corresponding with pulling time point;
Playing controller unit will be for also closing according to the request receiving key frame index of playing logic control elementKey frame index is stored to memory cell, also looks for the timestamp control providing according to broadcasting logic control elementFrequency file reading processing unit reads the key frame data corresponding with timestamp and forms key frame, and by key frameShow in broadcast window unit.
Play logic control element also whether continuous for judging described drag motions, and when being judged as the non-behaviour of pullingWhile work, control play position setting unit is obtained single progress bar and is pulled time point, true by pulling time pointFixed nearest timestamp; Play logic control element also for looking for corresponding pass by described nearest timestampKey frame, and control video file reading processing unit and read key frame and decode present frame, and control and playWindows units shows present frame.
Play logic control element also for when the failure of inquiry video file key frame index, obtain single progressBar pulls time point, determines nearest timestamp by time point; Play logic control element also for passing throughNearest timestamp is looked for corresponding key frame, and controls video file reading processing unit and read key frame and separateCode goes out present frame, and controls broadcast window unit demonstration present frame.
Playing controller unit by be stored in local video file, obtain or by the webserver toThe video file key frame index that line video file is corresponding is downloaded and is obtained key frame index.
Whether playing controller unit is also Online Video file for the video file that judges described broadcasting;
Play logic control element also in the time that described playing controller unit judges is Online Video file, sentenceThe disconnected key frame index that whether stores in this locality, if otherwise download, and control play position setting unit and obtainGet progress bar and park the nearest timestamp that time point is corresponding;
Playing controller unit is further used in key frame index, determining byte offset according to nearest timestampAmount, and download this nearest key frame according to described byte offsets by network;
Broadcasting logic control element is further used for controlling described broadcast window unit and continues broadcasting of former video fileStraighten to obtaining described nearest key frame and controlling broadcast window unit and show key frame.
Video file reading processing unit comprises the data communication interface list being connected with playing controller respectivelyUnit, document reading unit, audio frequency and video separative element, audio decoding unit, video decoding unit, soundFrequency rendering unit, the playback interface unit being connected with User Interface module.
As what it will be appreciated by those skilled in the art that, video display devices as herein described can be understood asThe virtual bench of being realized by computer program, wherein each function is all complete by virtual module or unitBecome;
Further, multiple operation can be carried out respectively in each module or unit, so for by same mould, can also in this subsystem, there is corresponding submodule in the multiple operation that piece or unit are performed,For the purpose of simplifying the description, will not enumerate these submodules herein.
How to realize between (comprising judgement, inquiry etc.) and each module and unit for multiple operation asWhat mutual concrete mode, those skilled in the art can utilize computer program to realize, no longer superfluous hereinState.
The present invention also provides a kind of terminal, comprises that the memory module of store video files and video are aobviousShowing device and for obtain the transmission control unit (TCU) of Internet video data flow from network video server; Transmission controlDevice processed comprises the first interface module that is connected with player and memory module, is connected with network video serverThe second interface module and transmission control module, transmission control module is for obtaining by the second interface moduleInternet video data flow, and Internet video data flow is offered to described player by first interface, andThis Internet video data flow is stored in to memory module temporarily.
Therefore, a kind of display methods and device that pulls progress bar provided by the invention, pulls by userTime progress bar time point in key frame index, find corresponding nearest timestamp, and obtain according to timestampTo byte offsets, then from video file, obtained key frame data by byte offsets and show this keyFrame. Therefore,, in the time that user pulls continuously, without calculating present frame, substitute present frame with key frameShow real-time, avoided searching key frame and calculated the problem too frequently of present frame, realizedInstant playback, has improved the fluency that user experiences.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all at thisWithin the spirit and principle of invention, any amendment of making, be equal to replacement, improvement etc., all should be included inWithin the scope of protection of the invention.
Claims (14)
1. a display methods that pulls progress bar, comprising:
In the time pulling progress bar, obtain some time points that pull with unit interval;
In the key frame index of video file, search with to pull time point corresponding according to the time point that pulls obtainingNearest timestamp;
Obtain byte offsets according to described nearest timestamp, and find with described nearest according to byte offsetsSome key frame data that timestamp is corresponding also show described key frame.
2. method according to claim 1, is characterized in that, pulls the aobvious of progress bar described in carrying outBefore showing method, also comprising the step that judges that whether drag motions is continuous, is non-drag operation if current, obtainsGet single progress bar and pull time point, determine nearest timestamp by pulling time point, and by describedNear timestamp is looked for corresponding key frame, and decodes present frame according to key frame, shows present frame.
3. method according to claim 1, is characterized in that, described method is in the time obtaining series and pullBetween after point, also comprise the step of inquiry video file key frame index, if inquire about unsuccessfully, obtain single enterDegree bar pulls time point, determines nearest timestamp, and find corresponding pass by timestamp by time pointKey frame, and decode present frame according to key frame, show present frame.
4. method according to claim 1, is characterized in that, described video file key frame index fromBe stored in local video file, obtain or by the webserver by key frame rope corresponding Online Video fileDraw to download and obtain.
5. method according to claim 1, is characterized in that, if described video file is Online VideoWhen file, pull progress bar and determine and pull time point, also comprise step: judge whether in this locality storage relevantKey frame index, if NO, downloads key frame index, when obtaining progress bar and parking corresponding nearest of time pointBetween stamp, determine byte offsets, and download this nearest key frame data according to byte offsets by network,Continue the broadcasting of former video file until described key frame data is downloaded complete, last at player interface simultaneouslyObtain the key frame data corresponding with described nearest timestamp and show.
6. according to the method described in claim 1 to 5 any one, it is characterized in that described key frame indexFor key frame time point and the manipulative indexing information table of numerical value that represents byte offsets.
7. a video display devices, is characterized in that, comprise run on the player module of terminal and withThe User Interface module that player module connects;
Wherein, described User Interface module comprises that broadcast window unit, the play position with progress bar establishPut unit and memory cell, and the broadcasting logic control element that said units is dispatched; Described broadcastingDevice module comprises video file reading processing unit and playing controller unit;
The video file key frame index that described memory cell arrives for storing received;
Described play position setting unit, in the time pulling progress bar, is obtained some pulling with unit intervalTime point;
What described broadcasting logic control element obtained according to play position setting unit pulls time point inquiry storageKey frame index in unit is also determined the nearest timestamp corresponding with pulling time point, and according to described nearestTimestamp obtain byte offsets;
Described playing controller unit is used for according to crucial described in the request receiving of described broadcasting logic control elementFrame index and by described key frame index stores to described memory cell, also for according to the control of described broadcasting logicThe byte offsets control video file reading processing unit that unit processed provides reads and described nearest timestampCorresponding key frame data forms key frame, and key frame is shown in broadcast window unit.
8. video display devices according to claim 7, is characterized in that, described broadcasting logic controlWhether unit is also continuous for judging described drag motions, and in the time being judged as non-drag operation, controlling and playPosition setting unit is obtained single progress bar and is pulled time point, determines nearest timestamp by pulling time point;Play logic control element also for looking for corresponding key frame by described nearest timestamp, and control videoFile reading processing unit reads key frame and decodes present frame, and it is current to control the demonstration of broadcast window unitFrame.
9. video display devices according to claim 7, is characterized in that, described broadcasting logic controlUnit also, for when the failure of inquiry video file key frame index, obtains single progress bar and pulls time point,Determine nearest timestamp by time point; Play logic control element also for passing through the described nearest timeStamp is looked for corresponding key frame, and controls video file reading processing unit and read key frame and decode present frame,And control broadcast window unit show present frame.
10. video display devices according to claim 7, is characterized in that, described playing controller listUnit is by obtaining in local video file or corresponding to Online Video file by the webserver being stored inVideo file key frame index is downloaded and is obtained key frame index.
11. video display devices according to claim 7, is characterized in that, described key frame index isReproduction time and the manipulative indexing information table of numerical value that represents byte offsets.
12. video display devices according to claim 7, is characterized in that, described playing controller listUnit is also for judging whether described video file is Online Video file;
Described broadcasting logic control element is also Online Video file for working as described playing controller unit judgesTime, judge whether to store in this locality key frame index, if NO, download, and control play position and establishPutting unit obtains progress bar and parks the nearest timestamp that time point is corresponding;
Described playing controller unit is further used in key frame index, determining byte according to nearest timestampSide-play amount, and download this nearest key frame data according to described byte offsets by network;
Described broadcasting logic control element is further used for controlling described broadcast window unit and continues former video fileBroadcasting until obtain the key frame data corresponding with described nearest timestamp and control broadcast window unit showKey frame.
13. 1 kinds of terminals, is characterized in that, comprise memory module and as the power of storing described video fileProfit requires the video display devices described in 7 to 12 any one.
14. terminals according to claim 13, is characterized in that, described terminal also comprisesFor obtain the transmission control unit (TCU) of Internet video data flow from network video server; Wherein, described transmission controlDevice processed comprises the first interface module and the Web Video Service that are connected with described player module and memory moduleThe second interface module and transmission control module that device connects, described transmission control module is for passing through described secondInterface module is obtained Internet video data flow, and described in Internet video data flow is offered by first interfacePlayer, and this Internet video data flow is stored in to described memory module temporarily.
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