CN101458715A - Information publishing and playing method synchronized with video - Google Patents
Information publishing and playing method synchronized with video Download PDFInfo
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- CN101458715A CN101458715A CNA2008102474844A CN200810247484A CN101458715A CN 101458715 A CN101458715 A CN 101458715A CN A2008102474844 A CNA2008102474844 A CN A2008102474844A CN 200810247484 A CN200810247484 A CN 200810247484A CN 101458715 A CN101458715 A CN 101458715A
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Abstract
The invention discloses a method for publishing and playing information synchronizing with the video, the method comprises: adding the publish information on a video playing time point; synchronously displaying the publishing information on the time point added with the publishing information, when playing the video published with the information again. According to add the publishing information in the video, the invention can synchronously display the publishing information when playing the video, can increase the video interactive performance, can use the video to learn more conveniently and effectively.
Description
Technical field
The present invention relates to the Internet video field, particularly relate to information issue and player method a kind of and audio video synchronization.
Background technology
In amusement masses' field, obtained sufficient exploitation, based on the Video Applications of internet such as various videoblogs or channel for TV plays and movies website.This class is used has an essential characteristic: video is in the process of playing, and spectators are in the status of a passive reception information all the time.Different therewith is that in the long-distance education field, spectators tend to the wish that produces all kinds of queries and want to find answer when watching video.Various online forums of text based and search engine provide comparatively easily " question and answer " platform, but this class technology comes watching video and question and answer link to isolate, and are unfavorable in watching the process of video the absorption to information.
With text, picture, other information carriers such as audio frequency are compared, and video remains effective, the most direct carrier of knowledge.From the angle of learning knowledge, the disadvantage of video is to lack " interactivity ": student's knowledge that receiver, video transmitted passively, when running into query, can not put question to.Notice that the implication of " student " is made a general reference the user who learns by video herein, " teacher " then makes a general reference all users that answer " student " is putd question to.Usually, at the category of Internet video, addressed this problem two thinkings: 1) similar with video conference, video Network Based realizes that the academics and students's is alternately complete.This method attempts to simulate the effect that talks face to face.The shortcoming of this method maximum is: need the personnel of all participation in learning processes simultaneously online.2) provide separately the platform of an enquirement, such as online forum for the student.This method is kept apart video and enquirement, is unfavorable for the location of problem, is unfavorable for improving the results of learning of learning based on video request program.
Summary of the invention
The purpose of this invention is to provide a kind of in video display process, realize interactive, can release news (ask a question or answer a question), and this information and video can be carried out the method for synchronous playing.
For achieving the above object, technical scheme of the present invention provides information issue and player method a kind of and audio video synchronization, and may further comprise the steps: on the time point of video playback, interpolation releases news; Described when having added the video that releases news and playing once more, being added with on the time point that releases news, show described releasing news synchronously.
Wherein, described video is play based on the internet, is Flash Video form.
Wherein, described releasing news independently left in the database in the mode that writes down, and every records a time domain, and the moment of information issue has been write down in this territory.Corresponding record is associated by cue point mechanism and the video that the Flash video provides with releasing news.When described video is play once more, detect whether be set up cue point at any time, if then trigger a cue point incident in moment corresponding; If not, then continue displaying video.
Wherein, that adds at one time releases news when video is play once more, shows simultaneously.Above-mentioned releasing news is text message and/or voice messaging.
Technique scheme has following advantage: release news by adding in video, show synchronously that in video playback increased the interactive of video, it is convenient and effective to utilize video to learn.
Description of drawings
Fig. 1 is a kind of structural representation based on information issue browser and server mode and audio video synchronization and Play System of the embodiment of the invention;
Fig. 2 is a kind of information issue of and audio video synchronization of the embodiment of the invention and the demonstration synoptic diagram of player method;
Fig. 3 is the process flow diagram that a kind of Flash video player of realizing with ActionScript3 based on the VideoDisplay class of the embodiment of the invention embeds cue points.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
Core concept of the present invention: on the different time points of video playback, allow the user to ask a question in the mode of text or sound.Collect the problem that different users proposes in watching the process of same video, according to time point merging, storage problem.Afterwards user is illustrated in the problem of collecting on the different time points, allows the user that problem is answered in the mode of text or sound simultaneously, collect answer.This process is carried out always, and question and answer is accumulated always.
Need solve two following key issues for realizing video request program operational mode of the present invention and reaching the purpose that improves learning efficiency:
1) collection mechanism of imbedding problem and answer on the time point of video playback how.From the angle of data structure, such collection mechanism need be independent of video itself, need move repeatedly independently after video record is finished.To existing video, the also collection mechanism of imbedding problem and answer easily on different play time.Need merge the approximate problem of content that is proposed by different users at the same time, this needs the technology of natural language processing aspect.
2) how after problem proposes, find answer as well as possible as quickly as possible.There are two thinkings to solve this problem: 1, manual type.The system that the present invention realizes allows to answer a question mutually between the student.Can design corresponding incentive mechanism to encourage helping each other between the student for this reason.The system that the present invention realizes is also for the teacher provides a problem collecting platform, and teacher can answer at those problems that is repeatedly proposed on same time point.2, utilize existing Q/A technology based on search engine to provide an answer as well as possible for the problem that proposes, this part content is not belonging to the present invention.
According to the data presentation that the comScore of market analysis mechanism independently provides in by the end of December, 2008 in, the Internet video in the whole world 81% is to watch by the Flash technology of Adobe, has become first Internet video form based on the video format of Flash.At this, we provide the embodiment based on the Flash video format.
Fig. 1 has provided the specific implementation of the present invention based on browser and server mode.The square frame on the left side is represented client among Fig. 1, comprises video, audio playing module and audio recording module; The square frame representative server end on the right comprises APACHE http server, RED5 streaming media server, database.Square frame 1 in the server end is represented the phonetic matrix modular converter, is used for FLV format conversion position MP3 format.Because the client audio frequency that RED5 records is only supported the FLV form, and adopt MP3 format to be more conducive to save the storage space and the needed network bandwidth of broadcast of server." reading " and " writing " module of square frame 2,3 representation databases is mainly used in the problem and the answer of recording text information.The square frame 4 of client is represented video, audio playing module, realizes based on the VideoDisplay class of ActionScript3, video and audio frequency is adopted based under HTTP gradual pound broadcast mode.Square frame 5 is represented the audio recording module, based on the Microphone class realization of ActionScript3, the RTMP agreement is adopted in the transmission of audio frequency.
Most critical has two parts among Fig. 1: 1, to the synchronous playing of course video and problem.2, the real-time collection and the storage of phonetic problem.Below set forth respectively:
1, to the synchronous playing of course video and problem:
All curricula videos for student's program request all adopt FLV (Flash Video) form.In the video display process progressive download mode based on http protocol is adopted in the transmission of video file.Player is realized based on the VideoDisplay class of ActionScript3.The cue point of Flash video provide a kind of on certain time point of video playback the mechanism of trigger corresponding operation, this mechanism is used to text or phonetic problem and the answer that explicit user proposed on corresponding time point.The most important attribute of cue Point is exactly " time point ".In the process of video playback, behind the time point that arrives certain cue point, FlashPlayer will automatically carry out a user-defined Listener function, and passes to event argument of this Listener function.
Prompting point (cue point) is a point, and when playing the FLV file, video player is in cue point incident of this some place scheduling.You can add the prompting point to the FLV file when wanting for other element execution action on the webpage.For example, you may want videotex or figure, perhaps will with the Flash animation in synchronization, perhaps to influence the broadcast of FLV file, be specially suspend the FLV file, search difference or switch to different FLV files in video.Prompting point allows you to receive control in the ActionScript code so that the point in the FLV file is synchronous with other action on the webpage.
The prompting point has three types: 1) navigation (navigation cue poin) t, 2) incident (eventcue point), 3) ActionScript cue point.Wherein navigation hint point and event prompt point are also referred to as embedded prompting point, the 1st and the 2nd kind of cue point need in the video production process, be embedded into video, promptly be embedded in the meta-data pack of FLV document flow and FLV file.The third ActionScript cue point can be before video playback cuePointManage by VideoDisplay cuePoints Array be set be dynamically embedded into.
Navigation hint point: allow the particular frame in the search FLV file, because it is in that the time near appointment is created key frame in the FLV file as far as possible." key frame " is the data segment that occurs between the picture frame of FLV document flow.When search navigation prompting point, assembly will search this key frame and start cue Point incident.
Event prompt point: allow to time point in the FLV file and the external event on the webpage synchronous.Cue Point incident accurately took place in the time of appointment.Video import wizard or Flash Video Encoder be can use, navigation hint point and event prompt point in the FLV file, embedded.
ActionScript points out point: be a kind of external prompt point, can add by " the Flash visual prompts point " dialog box of assembly or by FLVPlayback.addAS cue point method.ActionScript prompting point is stored and followed the tracks of to this assembly outside the FLV file, therefore, these prompting points will be lower than embedded prompting point on accuracy.ActionScript prompting point degree of accuracy is 1/10th seconds.Can be by reducing the degree of accuracy that the playheadUpdateInterval property value improves ActionScript prompting point, because assembly can be pointed out dot generation cue Point incident for ActionScript when playback head upgrades.In the metadata of ActionScript and FLV file, the prompting point is expressed as the object that has following attribute: name, time, type and parameters.The name attribute is a character string, wherein is included as the title that the prompting point distributes.The time attribute is a numeral, and the time of origin of expression prompting point is with hour, minute, second and millisecond (HH:MM:SS.mmm) expression.The type attribute is a character string, and according to the type of the prompting point of creating, this character string can be ＂ navigation ＂, ＂ event ＂ or ＂ actionscript ＂.The parameters attribute is the right array of title-value that comprises appointment.When cue point incident takes place, can in event object, provide prompting point object by the info attribute.
2, the real-time collection and the storage of phonetic problem:
Because this implementation based on the browser server pattern, does not have special client software, therefore the real-time collection of voice is needed the support of streaming media server.This implementation adopts RED5 as streaming media server.RED5 is a kind of streaming media server of freely increasing income.At browser one end, the MicroPhone class of recording mainly based on Action Script3 of voice is realized.RED5 only supports the FLV storage format when gathering the client voice, therefore also need one with the format conversion unit of FLV format conversion to MP3 at server end.The voice storage format of MP3 is more conducive to save the storage space of server and plays the needed network bandwidth.
With regard to how in a video (FLV form) file, embedding synchronous question and answer further specify below.Here the concrete implication of " synchronously " is: in video display process, problem and answer will show on the time point that this problem is proposed first synchronously.Such as, user A has proposed a problem Q in the moment in the 50th second of watching certain video V.Problem Q can be seen in user B the 50th second in the process of watching video V.B also can answer with regard to problem Q, its answer also by in systematic collection and afterwards the playing process by synchronous playing, as shown in Figure 2.
In the present invention and the problem of video correspondence and answer independently leave in the database in the mode of record.Every records a time domain, and the moment that problem is suggested has been write down in this territory.In user's order video, the record corresponding with problem is associated by cuepoint mechanism and the video that the Flash video provides.The Flash video player will check oneself whether to be set up cue point at any time in the process of video playback, if just trigger a cue Point incident (event) in moment corresponding.Be performed with the user-defined call back function function of cue point event correlation.Call back function is demonstration problem and answer link in question and answer window (see figure 2).
What the video player of this implementation method adopted is the VideoDisplay class that Flash provides, the cuePointManage of VideoDisplay is set to mx.controls.videoClasses.CuePointManage, this class provides the whole bag of tricks to cue point operation, comprises that to embed new concrete embedded mode as follows.The call back function of VideoDisplay class and cue point event correlation is set to user-defined function cpHandler, and is as follows:
<mx：VideoDisplay?width＝＂400＂height＝＂300＂id＝＂videoPlayer＂
cuePointManagerClass＝＂mx.controls.videoClasses.CuePointManager＂
cuePoint＝＂cpHandler(event)；＂
/>
Fig. 3 has provided the execution flow process that the Flash video player of realizing with ActionScript3 based on the VideoDisplay class embeds cue points.Notice that whole flow process is carried out on user browser.
Attention: the triggering of cue point incident will be called the cpHandler function, and the cpHandler function will demonstration problem and answer in the question and answer window.If the user clicks problem or answer, the video of current broadcast will suspend, and the voice of playback problem or answer (if phonetic problem).
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1, information a kind of and audio video synchronization is issued and player method, it is characterized in that, may further comprise the steps:
On the time point of video playback, interpolation releases news; Described when having added the video that releases news and playing once more, being added with on the time point that releases news, show described releasing news synchronously.
2, information as claimed in claim 1 and audio video synchronization is issued and player method, it is characterized in that described video is play based on the internet.
3, information as claimed in claim 1 and audio video synchronization is issued and player method, it is characterized in that described video is a Flash Video form.
4, information as claimed in claim 3 and audio video synchronization is issued and player method, it is characterized in that described releasing news independently left in the database in the mode that writes down, and every records a time domain, and the moment of information issue has been write down in this territory.
5, information as claimed in claim 4 and audio video synchronization is issued and player method, it is characterized in that, corresponding record is associated by cue point mechanism and the video that the Flash video provides with releasing news.
6, information as claimed in claim 5 and audio video synchronization is issued and player method, it is characterized in that, when described video is play once more, detects whether be set up cue point at any time, if then trigger a cue point incident in moment corresponding; If not, then continue displaying video.
7, information as claimed in claim 1 and audio video synchronization is issued and player method, it is characterized in that that adds at one time releases news when video is play once more, shows simultaneously.
8, as claim 1～7 each information issue and player method described and audio video synchronization, it is characterized in that described releasing news is text message and/or voice messaging.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008102474844A CN101458715A (en) | 2008-12-31 | 2008-12-31 | Information publishing and playing method synchronized with video |
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| CNA2008102474844A CN101458715A (en) | 2008-12-31 | 2008-12-31 | Information publishing and playing method synchronized with video |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102098572A (en) * | 2011-01-26 | 2011-06-15 | 上海交通大学 | Customized streaming media embedding and playing system based on flash and realization method thereof |
| CN102135986A (en) * | 2011-02-28 | 2011-07-27 | 重庆大学 | Teaching videotape synchronous text message adding and paragraphing playing method based on internet |
| CN102340686A (en) * | 2011-10-11 | 2012-02-01 | 杨海 | Method and device for detecting attentiveness of online video viewer |
| CN102521294A (en) * | 2011-11-30 | 2012-06-27 | 苏州奇可思信息科技有限公司 | Remote education lesson teaching method based on voice frequency touch type courseware |
| CN104412577A (en) * | 2012-02-23 | 2015-03-11 | 大专院校网站公司 | Asynchronous video interview system |
| CN104581409A (en) * | 2015-01-22 | 2015-04-29 | 广东小天才科技有限公司 | Virtual interactive video playing method and device |
| CN104883288A (en) * | 2014-02-27 | 2015-09-02 | 北京风行在线技术有限公司 | Method and apparatus for providing information to be released |
| CN104954891A (en) * | 2015-05-26 | 2015-09-30 | 重庆大学 | Method for adding synchronous subtitles to videos in web pages and supportive to online modification and preview |
| CN105915970A (en) * | 2016-05-17 | 2016-08-31 | 创盛视联数码科技（北京）有限公司 | Network live broadcasting operation command sending method and device as well as reading method and device |
| CN107222788A (en) * | 2016-08-31 | 2017-09-29 | 北京正阳天马信息技术有限公司 | A kind of interaction question answering system implementation method based on video display process |
| CN111613104A (en) * | 2019-02-25 | 2020-09-01 | 山卫科技股份有限公司 | Cognitive learning system and system thinking learning method thereof |
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2008
- 2008-12-31 CN CNA2008102474844A patent/CN101458715A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102098572A (en) * | 2011-01-26 | 2011-06-15 | 上海交通大学 | Customized streaming media embedding and playing system based on flash and realization method thereof |
| CN102098572B (en) * | 2011-01-26 | 2013-02-27 | 上海交通大学 | Customized streaming media embedding and playing system based on flash and realization method thereof |
| CN102135986A (en) * | 2011-02-28 | 2011-07-27 | 重庆大学 | Teaching videotape synchronous text message adding and paragraphing playing method based on internet |
| CN102340686A (en) * | 2011-10-11 | 2012-02-01 | 杨海 | Method and device for detecting attentiveness of online video viewer |
| CN102340686B (en) * | 2011-10-11 | 2013-10-09 | 杨海 | Method and device for detecting attentiveness of online video viewer |
| CN102521294A (en) * | 2011-11-30 | 2012-06-27 | 苏州奇可思信息科技有限公司 | Remote education lesson teaching method based on voice frequency touch type courseware |
| CN104412577A (en) * | 2012-02-23 | 2015-03-11 | 大专院校网站公司 | Asynchronous video interview system |
| CN104883288A (en) * | 2014-02-27 | 2015-09-02 | 北京风行在线技术有限公司 | Method and apparatus for providing information to be released |
| CN104581409A (en) * | 2015-01-22 | 2015-04-29 | 广东小天才科技有限公司 | Virtual interactive video playing method and device |
| CN104954891A (en) * | 2015-05-26 | 2015-09-30 | 重庆大学 | Method for adding synchronous subtitles to videos in web pages and supportive to online modification and preview |
| CN105915970A (en) * | 2016-05-17 | 2016-08-31 | 创盛视联数码科技（北京）有限公司 | Network live broadcasting operation command sending method and device as well as reading method and device |
| CN107222788A (en) * | 2016-08-31 | 2017-09-29 | 北京正阳天马信息技术有限公司 | A kind of interaction question answering system implementation method based on video display process |
| CN111613104A (en) * | 2019-02-25 | 2020-09-01 | 山卫科技股份有限公司 | Cognitive learning system and system thinking learning method thereof |
| CN111613104B (en) * | 2019-02-25 | 2022-02-11 | 山卫科技股份有限公司 | Cognitive learning system and system thinking learning method thereof |
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Open date: 20090617 |