CN101917390B - Multifunctional network player - Google Patents
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- CN101917390B CN101917390B CN2009102428200A CN200910242820A CN101917390B CN 101917390 B CN101917390 B CN 101917390B CN 2009102428200 A CN2009102428200 A CN 2009102428200A CN 200910242820 A CN200910242820 A CN 200910242820A CN 101917390 B CN101917390 B CN 101917390B
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Abstract
The invention provides a multifunctional network player, which can achieve the functions of fixed play, multi-code stream selection, multi-picture switching and the like. The player comprises a playing module, a play switching module and a multi-code stream switching module, wherein the playing module is used for starting to play a video from a request time point; the play switching module is used for receiving multi-channel video signals from the same video source and switching a currently played signal into another requested signal according to a request; and the multi-code stream switching module is used for switching the code stream adopted by the current signal to a requested code stream according to the request. The multifunctional network player integrates the functions of fixed play, direct broadcast time-shift playback, multi-picture switching, multi-code stream switching, marking and searching, and local recording, and provides more and more novel services for users.
Description
Technical field
The present invention relates to the network video technique field, particularly relate to a kind of multifunctional network player.
Background technology
Along with the development of modern network technology, network begins to bring people various informative information.From the first pictures till now various forms of Internet videos, three-dimensional animation occur at network, people's audio visual has obtained very large satisfying at network.Another is inevitably awkward but people are faced with again: when network is seen lively clearly media demo, have nothing for it but and wait for transfer files and spend the plenty of time.In order to solve this contradiction, a kind of new medium technique arises at the historic moment, stream media technology that Here it is.
So-called Streaming Media refers to adopt the mode of stream transmission at the media formats of Internet broadcast.The stream transmission mode then is that the multimedia files such as whole A/V and 3D are divided into one by one compressed package through special compress mode,, in real time transmission continuous to subscriber computer by video server.In the system that adopts the stream transmission mode, the user needn't wait until as adopting downloading mode that whole file all downloads completely, plays behind the multimedia file decompress(ion)s such as A/V, 3D of decompression apparatus (hardware or software) to compression and watches but only need can utilize at user's computer through the startup time-delay of seconds or tens of seconds.The remainder of multimedia file will continue to download in the server on backstage this moment.
On subscriber computer, the broadcast of Streaming Media is to realize by network player.Network player is a webpage connector, and behind the page that operation is made, the Windows Media player that its meeting calling system carries is play the files in stream media that the user chooses in advance.
Present network player only is used for video playback mostly, and its function ratio is more single, can't satisfy the increasing demand of user.
Summary of the invention
Technical problem to be solved by this invention provides a kind of multifunctional network player, can realize the functions such as fixed point broadcast, many code stream selection, many Picture switchs.
In order to address the above problem, the invention discloses a kind of multifunctional network player, comprising:
Playing module is used for beginning displaying video from the time point of request;
The Broadcast Control handover module is used for receiving multi-channel video signal for same video source, and according to asking road signal with current broadcast to switch to another road signal of asking;
Described Broadcast Control handover module comprises: buffer unit is used for all the other several signals are carried out buffer memory;
Described buffer memory specifically comprises: preset cache-time, above behind the cache-time, the signal content of new access covers the signal content of a upper moment correspondence;
Many code streams handover module is used for switching to the code stream of asking at the code stream that playing process will be worked as the signal employing of last road according to request.
Preferably, described network player also comprises: the time shift playback module is used for the video that live permission playback has been broadcasted, and begins to play from the time point of request playback.
Preferably, described time point is corresponding with the key frame of video file, and described video file has been set up index to each key frame, begins from the key frame position to play according to described index.
Preferably, described playing module comprises: main window is used for playing wherein one road signal;
A plurality of windows are used for playing all the other several signals, and each time window is play one road signal.
Preferably, described Broadcast Control handover module also comprises:
Signal switch unit is used for the road signal that current main window is play is switched to another road signal of inferior window broadcast of asking.
Preferably, described network player also comprises:
Mark module is used for the video of current broadcast is carried out mark;
Search module is used for the searching key word according to user's input, and Search Results is showed at player, and described Search Results is the marking video of corresponding searching key word.
Preferably, described mark module carries out mark to the key frame in the video file of current broadcast; Then described playing module begins from this key frame position to play.
Preferably, described network player also comprises:
The locally storing module is used for the video of current broadcast is buffered in this locality with the form of fragment file, is complete video file with the fragment file synthesis then.
Preferably, described network player also comprises:
The purview certification module is used for authentication this locality and whether has the authority of including, if having, then allows at local cache fragment file; If do not have, then do not allow at local cache fragment file.
Compared with prior art, the present invention has the following advantages:
Multifunctional network player provided by the invention except basic video playback capability, also has following what's new:
1, has the fixed point playing function, owing to having adopted the stream microtomy, can begin to play-over video from the time point of user's request, and not need to wait for the broadcast of previous contents, therefore realized quick, the accurate location of video.
2, also have the time shift playback function in network direct broadcasting, namely can carry out unlimited for a long time direct playing and playback to live content, the user can not miss the live fragment of any excellence.
3, have many Picture switchs function, player provides main window and a plurality of windows, is used for playing simultaneously a plurality of pictures from multi-angled shooting, and the user can select and switch the shooting angle of oneself liking and watch.
4, have many code streams handoff functionality, the user can freely select a kind of code stream to play, and can also carry out code stream and switch in playing process, to adapt to the transmission state of network.For example, in the situation that the less low code stream of selecting of network bandwidth resources, and in the situation that the bandwidth resources abundance is selected high code stream, thereby the fluency of assurance video playback.And, by in playing process, adjusting video code flow, can also improve the concurrent user number that Internet video is play.
5, provide mark and search service, the user can carry out mark to own interested video, and server end can combine user's marking behavior with search engine, and the user can retrieve the video that mark is crossed on player.
6, has the locally storing function, allow to have the video that the user of authority will watch online and automatically be saved in this locality, if the user wishes again to watch certain video, just can directly obtain broadcast from this locality, and do not need to rely on network environment, be very easy to the user.
Description of drawings
Fig. 1 is the embodiment of the invention one described a kind of network player structure chart for video request program;
Fig. 2 is the embodiment of the invention two described a kind of network player structure charts for net cast.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
The invention provides a kind of network player of feature richness, the broadcast of integrated fixed point, direct broadcast time-shift playback, many Picture switchs, the switching of many code streams, mark and search, a plurality of functions of locally storing are for the user provides more, more novel service.
Multifunctional network player of the present invention is based on stream media technology, is widely used in multimedia news briefing, the online every aspect of the Internet Information Services such as live, the web advertisement, ecommerce, video request program (VOD), long-distance education, tele-medicine, network radio station, real-time video meeting.The below is elaborated as an example of typical network direct broadcasting and network program request example.
Embodiment one:
Along with the development of broadband networks and information household appliances, stream media technology can be applied to video on-demand system more and more widely.At present, a lot of large-scale news entertainment mediums such as the Chinese Central Television (CCTV), BTV etc., all provide program based on stream media technology at Internet.
With reference to Fig. 1, it is the embodiment of the invention one described a kind of network player structure chart for video request program.
Described network program request player can comprise:
Playing module 11 is used for beginning displaying video from the time point of request;
Broadcast Control handover module 12 is used for receiving multi-channel video signal for same video source, and according to asking road signal with current broadcast to switch to another road signal of asking;
Many code streams handover module 13 is used for switching to the code stream of asking according to the code stream of asking to work as the signal employing of last road.
Wherein, described playing module 11 is different from video playback of the prior art.In the prior art, behind certain video of user's program request, can only begin to play from the beginning broadcast of video file; But in the present embodiment, behind certain video of user's program request, can directly drag and play bar to certain position, begin to play-over from this position.
The implementation of described playing module 11 is as follows:
Be positioned at the video file of server end when storage, each key frame in the file has been set up index, therefore, when the network player request that is positioned at client is play certain video from certain time point, server end just can find key frame position corresponding to this time point very soon according to described index, then directly begin to the network player transmitting video data from this key frame position, network player also can directly begin displaying video from this key frame position.
For described Broadcast Control handover module 12, described multi-channel video signal is for same video source, and every road signal is the picture of a lens shooting, and namely player can broadcast the picture of a plurality of angle shots simultaneously in same broadcast time.For example, in certain singer's the concert video, in the process that this singer is singing, have multiple cameras and take from a plurality of angles simultaneously, so just generated multi-channel video signal, be transferred to simultaneously player.The road signal that the Broadcast Control handover module 12 of player will be given tacit consent to broadcasts, and simultaneously all the other several signals is carried out buffer memory.When the user wishes to see the picture of other angle, can select the cutaway picture.
Preferably, described playing module 11 can comprise:
Main window is used for playing wherein one road signal;
A plurality of windows are used for playing all the other several signals, and each time window is play one road signal.
That is: the broadcast window of player is divided into a larger main window and a plurality of less inferior window, and wherein main window is play wherein one road live signal, and all the other several roads live signals are cached in the player, and broadcasts in a plurality of windows simultaneously.The user can be at one time from inferior window preview to the broadcast of all the other several signals.
Accordingly, described Broadcast Control handover module 12 can comprise:
Buffer unit is used for all the other several signals are carried out buffer memory;
Signal switch unit is used for the road signal that current main window is play is switched to another road signal of inferior window broadcast of asking.
Preferably, described buffer unit is when carrying out the multiple signals buffer memory, can also be according to different situations, can set certain cache-time, such as 10 seconds or 5 minutes, surpass after the cache-time, will deposit the several signals content of up-to-date access in the described buffer unit in, and upper one several signals that constantly deposit in are override.Wherein, described cache-time can be according to factor flexibly customizings such as the size of concrete application demand and signal content and memory sizes.Like this, can guarantee can not take too much memory source, thereby can not affect the operation of server system in the situation that the limited realization of spatial cache Broadcast Control is switched.
The implementation of described Broadcast Control handover module 12 is as follows:
When the user wishes the Picture switch of certain time window is amplified when playing to main window, can choose inferior window and drag mouse and click this window, then triggered handover request.The broadcast handover module 12 of player is triggered, carrying out following signal switches: road signal content in the main window stops to play, the picture of simultaneously selected inferior window also stops, then one road signal of access time window is switched to the main window broadcast, cut main window at the picture that inferior window shows, begin to cut gradually broadcast from a side of main window, the picture that stops to broadcast in the main window simultaneously withdraws from main window gradually.After handoff procedure finished, what show in the main window was the picture of coming from inferior windows exchange, and main window begins to play the road signal that is switched.
The realization of above-mentioned Broadcast Control handover module 12 so that the user can watch a plurality of pictures of different shooting angles at one time, has been satisfied the different demands of different user to video playback.And the Picture switch process of primary and secondary window is level and smooth without pausing, and black field or picture can not occur and stop the phenomenon of pending buffer, thereby keep the continuity of playing.
For many code streams handover module 13, code stream selection and code stream handoff functionality are provided.In the present embodiment, same video source can corresponding multiple code stream, and player is to receive according to a kind of code stream wherein when receiving the multiple signals of a video source.That is: above-mentioned main window all adopts identical a kind of code stream to play with a plurality of windows.If above-mentioned Broadcast Control handover module 12 carries out the switching of picture signal, can continue to play another road signal that switching is come according to current code stream equally, only when the user selection code stream switched, many code streams handover module 13 just can all switch to the signal in current main window and time window alternative code stream and play.
Code stream can affect the fluency of video playback, and therefore, the user can be in the situation that network state bad (slower such as network speed) be selected low code stream, and in the situation that network state good (very fast such as network speed) is selected high code stream.Like this, even network speed is slower, owing to having selected the low code stream transmission of video, can reduce the resource occupying in the transmission of video process, thereby guarantee the fluency of video playback.
And if most of user can both select lower code stream to play as far as possible, then the bandwidth of each CU will reduce, and just can connect more user, improves the concurrent user number that Internet video is play, and namely improves the coverage rate that Internet video is play.
Preferably, described program request player also provides search and literal display function.The interface of described network player not only comprises broadcast window, also comprises the search service zone.Described broadcast window is used for playing the video that the user chooses, described search service zone provides search box and search result list zone, the user can input in the search box keyword and retrieve, Search Results is illustrated in the player, the user clicks certain video in the search result list, just can play in broadcast window.Above-mentioned broadcast and search service all are to be provided by player, rather than are provided by the webpage outside the player.
Therefore, described player can also comprise:
Mark module 14 is used for the video of current broadcast is carried out mark;
Search module 15 is used for the searching key word according to user's input, and Search Results is showed at player, and described Search Results is the marking video of corresponding searching key word.
Described mark refers to: the user watches by network player in the process of certain video, based on a variety of causes, as thinks that the contents value of this video must recommend or collect, and perhaps this video relatively has characteristics, can this video be made marks in the client of oneself.Network player provides mark button, and this button of user selection can be finished the mark action.
Server end can be collected the label information from a plurality of clients, utilizes these label informations can set up the mapping relations of the video file of searching key word and mark, thereby search service is provided.When the user behind player input keyword, server end can according to described mapping relations, preferentially will be done the video of mark as Search Results.
In addition, described mark module 12 can carry out mark to whole video file, also can carry out mark to the key frame in the video file.Therefore, when the user selected certain video to play from Search Results, if corresponding certain key frame of gauge point, then playing module 11 can directly begin from this key frame position to play.
Compared with prior art, the mark and the search service that provide of this player has following advantage:
1, in traditional network player, increases the video frequency searching function, so that video playback and retrieval, literal all have been integrated on the player, enriched greatly the function of player.
2, a kind of retrieval service pattern of innovation has been proposed, by the user stream medium datas such as audio frequency and video of accessing are carried out mark, can collect user's visit information, these visit informations of analysis and arrangement, the stream medium data that is labeled can be come the forward position of result for retrieval, preferentially the stream medium data that is labeled be searched for out.Because user's visit information can reflect user's hobby, present focus, fashion trend etc., the retrieval service of therefore utilizing visit information to set up also more can reflect user's Search Requirement, and Search Results is also more accurate.
3, can carry out mark to certain wonderful in the video file, the position of mark is corresponding with key frame in this document, like this, the user inputs certain video file of keyword search and when wishing to begin to watch from the position of marking, just can begin from this key frame position to play the accurate location of having realized video file.The user does not need to take time and waits for transmission and the broadcast of previous contents, just can be directly from video arbitrary gauge point begin to watch.
Preferably, described program request player also provides the locally storing function, and the video file that the user watched online can be saved in this locality automatically, if the user wishes again to watch certain file, just can directly obtain broadcast from this locality, and not need to rely on network environment, be very easy to the user.
Therefore, described player can also comprise:
Locally storing module 16 is used for the video of current broadcast is buffered in this locality with the form of fragment file, is complete video file with the fragment file synthesis then.
The present embodiment is based on the stream transmission technology, and a files in stream media is decomposed into a plurality of packets and is transferred to this locality from server end, and this locality receives in real time packet and can play.Traditional stream transmission need to arrange buffer memory in this locality, is used for the packet of storage certain hour section, and after the packet in the buffer memory all played, buffer memory abandoned the content of having play, and the follow-up content of not yet playing of buffer memory is come in the space that re-using is vacated.The effect of described buffer memory is to eliminate delay time and jitter, to guarantee that stream medium data can broadcast continuously.
Equally also need to buffer memory be set in this locality in the present embodiment, but, this buffer memory not only is used for guaranteeing the continuous broadcast of stream medium data, also needs all packets that receive in the files in stream media playing process are all stored, and stores with the form of fragment file.
The file synthesis method that the present embodiment adopts is: each fragment file indicates timestamp, according to described timestamp, just can be combined into correct primary flow media file to all fragment files according to time sequencing.
Preferably, can also the locally storing authority be set to different user, only in the situation that meet some condition (as for VIP client or the client that pays dues), just can obtain this authority.
Therefore, described player can also comprise:
The purview certification module is used for authentication this locality and whether has the authority of including, if having, then allows at local cache fragment file; If do not have, then do not allow at local cache fragment file.
In sum, above-mentioned network player for video request program can fix a point broadcast, many Picture switchs, the switching of many code streams, mark and search, a plurality of operations of locally storing, the user can select corresponding function according to different applicable cases.Therefore, for the user, this powerful network player that the present embodiment provides provides higher-quality service for the user.
Embodiment two:
Along with the development of Internet technology with popularize, watch directly that on Internet competitive sports, great celebration, commerce and trade exhibition become a lot of netizens' hope, and a lot of manufacturer wishes that product and the activity with oneself spreads throughout the world by form live on line.These demands have been facilitated the live formation of Internet.
The network player that is used for net cast is similar with the network player that is used for video request program, has a lot of identical functions, but also has some to be used for the function of direct broadcast service.
With reference to Fig. 2, be the embodiment of the invention two described a kind of network player structure charts for net cast.
Described live play device also comprises:
Playing module 21 is used for beginning displaying video from the time point of request;
Broadcast Control handover module 22 is used for receiving multi-channel video signal for same video source, and according to asking road signal with current broadcast to switch to another road signal of asking;
Many code streams handover module 23 is used for switching to the code stream of asking according to the code stream of asking to work as the signal employing of last road;
Mark module 24 is used for the video of current broadcast is carried out mark;
Search module 25 is used for the searching key word according to user's input, and Search Results is showed at player, and described Search Results is the marking video of corresponding searching key word;
Locally storing module 26 is used for the video of current broadcast is buffered in this locality with the form of fragment file, is complete video file with the fragment file synthesis then.
In addition, described live play device can also comprise:
Time shift playback module 27 is used for the video that live permission playback has been broadcasted, and begins to play from the time point of request playback.
Being achieved as follows of described time shift playback module 27:
The user if missed certain section just now live content, perhaps thinks again to watch just now live wonderful when watching live video, then can back drag the progress bar of player, and time shift playback module 27 is triggered, and sends request to server end.Server end since buffer memory live data, therefore can with just now the video of live mistake from buffer memory, read again, and be transferred to and carry out network player and play.And the time point of playback is corresponding with key frame, therefore can directly begin from the key frame position to play.
In sum, multifunctional network player provided by the invention except basic video playback capability, also has following what's new:
1, has the fixed point playing function, owing to having adopted the stream microtomy, can begin to play-over video from the time point of user's request, and not need to wait for the broadcast of previous contents, therefore realized quick, the accurate location of video.
2, also have the time shift playback function in network direct broadcasting, namely can carry out unlimited for a long time direct playing and playback to live content, the user can not miss the live fragment of any excellence.
3, have many Picture switchs function, player provides main window and a plurality of windows, is used for playing simultaneously a plurality of pictures from multi-angled shooting, and the user can select and switch the shooting angle of oneself liking and watch.
4, have many code streams handoff functionality, the user can freely select a kind of code stream to play, and can also carry out code stream and switch in playing process, to adapt to the transmission state of network.For example, in the situation that the less low code stream of selecting of network bandwidth resources, and in the situation that the bandwidth resources abundance is selected high code stream, thereby the fluency of assurance video playback.And, by in playing process, adjusting video code flow, can also improve the concurrent user number that Internet video is play.
5, provide mark and search service, the user can carry out mark to own interested video, and server end can combine user's marking behavior with search engine, and the user can retrieve the video that mark is crossed on player.
6, has the locally storing function, allow to have the video that the user of authority will watch online and automatically be saved in this locality, if the user wishes again to watch certain video, just can directly obtain broadcast from this locality, and do not need to rely on network environment, be very easy to the user.
Described network player can be applicable to a plurality of fields such as network direct broadcasting, program request.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
Above to a kind of multifunctional network player provided by the present invention, be described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (9)
1. a multifunctional network player is characterized in that, comprising:
Playing module is used for beginning displaying video from the time point of request;
The Broadcast Control handover module is used for receiving multi-channel video signal for same video source according to identical code stream, and according to asking road signal with current broadcast to switch to another road signal of asking;
Described Broadcast Control handover module comprises:
Buffer unit is used for all the other several signals are carried out buffer memory;
Described buffer memory specifically comprises: preset cache-time, above behind the cache-time, the signal content of new access covers the signal content of a upper moment correspondence;
Many code streams handover module is used for switching to the code stream of asking at the code stream that playing process will be worked as the signal employing of last road according to request.
2. network player according to claim 1 is characterized in that, also comprises:
The time shift playback module is used for the video that live permission playback has been broadcasted, and begins to play from the time point of request playback.
3. network player according to claim 1 and 2 is characterized in that:
Described time point is corresponding with the key frame of video file, and described video file has been set up index to each key frame, begins from the key frame position to play according to described index.
4. network player according to claim 1 is characterized in that, described playing module comprises:
Main window is used for playing wherein one road signal;
A plurality of windows are used for playing all the other several signals, and each time window is play one road signal.
5. network player according to claim 4 is characterized in that, described Broadcast Control handover module also comprises:
Signal switch unit is used for the road signal that current main window is play is switched to another road signal of inferior window broadcast of asking.
6. network player according to claim 1 is characterized in that, also comprises:
Mark module is used for the video of current broadcast is carried out mark;
Search module is used for the searching key word according to user's input, and Search Results is showed at player, and described Search Results is the marking video of corresponding searching key word.
7. network player according to claim 6 is characterized in that:
Described mark module carries out mark to the key frame in the video file of current broadcast;
Then described playing module begins from this key frame position to play.
8. network player according to claim 1 is characterized in that, also comprises:
The locally storing module is used for the video of current broadcast is buffered in this locality with the form of fragment file, is complete video file with the fragment file synthesis then.
9. network player according to claim 8 is characterized in that, also comprises:
The purview certification module is used for authentication this locality and whether has the authority of including, if having, then allows at local cache fragment file; If do not have, then do not allow at local cache fragment file.
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| CN101588488A (en) * | 2009-06-18 | 2009-11-25 | 北京浪弯融科科技有限责任公司 | Multiple-position streaming media transmitting method as well as multiple-position streaming media broadcasting method and system |
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2009
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1801929A (en) * | 2005-12-08 | 2006-07-12 | 复旦大学 | Method for network interaction television system realizing time-shift function |
| CN101287083A (en) * | 2008-05-15 | 2008-10-15 | 宏碁股份有限公司 | Digital television with picture switching function and method applied thereto |
| CN101330607A (en) * | 2008-08-01 | 2008-12-24 | 深圳市同洲电子股份有限公司 | Method and system supporting time-shifting function monitoring video as well as monitoring terminal thereof |
| CN101588488A (en) * | 2009-06-18 | 2009-11-25 | 北京浪弯融科科技有限责任公司 | Multiple-position streaming media transmitting method as well as multiple-position streaming media broadcasting method and system |
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