CN101179700B - Program source switch method and stream media play system - Google Patents
Program source switch method and stream media play system Download PDFInfo
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Abstract
The invention discloses a method for switching program source in stream media playing which includes: a program source switching command for switching a current first program source to a target second program source is transmitted to a stream media playing system; after receiving the program source switching command, the stream media playing system continues to collect and play stream media data of the first program source and starts to collect stream media data of the second program source; after effective data of the second program source is obtained, the collection of the stream media data of the first program source is stopped; at the same time, the stream media data of the second program source is started to play, and the switching from the first program source to the second program source is realized. The invention also discloses a related stream media playing system. By adopting the invention, period without any blank screen is realized during program source switching; besides, when the program source code rate is different after switching, a second encoding process is carried out for the stream media data, and a receiving terminal is not required to be notified to conduct code rate change.
Description
Technical field
The present invention relates to streaming media playing, relate in particular to a kind of program source switch method and corresponding stream media play system.
Background technology
Network flow-medium is play and is belonged to the emerging technology that grows up, particularly P2P (Peer To Peer) stream media technology recently, can pass through Internet real time communication audio/video program.In the playing programs process, can also realize the program source switching according to other audio-video frequency media streams such as commercial breaks such as sponsor's demand, film clips.
In the prior art, in the time of need carrying out the program source switching, directly the program source from current broadcast switches to the target program source, and when the code check of two program source was inequality, the notice receiving terminal was revised the code check setting of local player, changed with the code check that adapts to program source.
Because prior art is when carrying out the program source switching, directly stop earlier the program source of current broadcast, play the stream medium data that switches back target program source again, need the regular hour and start the stream medium data of playing the target program source, therefore, with causing the blank screen phase of certain time length between transfer period, make program discontinuous.In addition, in the prior art carry out program source when switching not to the current program source before switching with switch after the target program source to carry out code check adaptive, there is the picture distortion in switching slot, and needing in addition, the notice receiving terminal carries out rate conversion, thereby increased the data volume that transmits in the network, increased the network traffics expense.
Summary of the invention
The invention provides a kind of program source switch method and stream media play system, in order to solve exist in the prior art carry out program source long problem of blank screen time when switching; And when the program source code check that switches front and back was inequality, needing in addition, the notice receiving terminal carry out the problem that rate conversion causes increasing the network traffics expense.
The inventive method comprises:
Send the program source switching command that switches to target second program source from current first program source to stream media play system;
After described stream media play system receives described program source switching command, continue to gather and play the stream medium data of described first program source, and start the stream medium data of gathering described second program source;
Obtain the corresponding code check of described first program source and second program source, and compare the size of two program source code checks;
When both are identical, directly start the stream medium data of playing described second program source that collects;
When both not simultaneously, earlier the stream medium data from the described second program source collection is carried out decoding processing, adopt the coding parameter of the corresponding code check of described first program source that the stream medium data of decoded second program source is encoded again again; When getting access to the stream medium data of second program source after encoding again, stop to gather the stream medium data of described first program source, the stream medium data after the encoding again of described second program source is play in startup simultaneously.
According to said method of the present invention, also comprise: the stream medium data after described second program source of buffer memory is encoded again, and notify the Executive Module of the broadcast in the described stream media play system is pushed to described broadcast Executive Module with the stream medium data of buffer memory;
After described broadcast Executive Module receives notification message, stop to play the stream medium data of described first program source, receive the stream medium data and the broadcast that push second program source of coming.
According to said method of the present invention, also comprise:
When ending to play the stream medium data of described first program source, write down the playing progress rate or the timestamp of described first program source, when needs switched back described first program source, playing progress rate or the timestamp according to first program source of record therefrom continued to play in the stop place again.
Describedly send the program source switching command that switches to target second program source from current first program source, specifically comprise to stream media play system:
Send the program source switching command to described stream media play system manually; Perhaps
Preestablish the program source handoff list of switching in chronological order, when switching instant arrives, send the program source switching command from the described stream media play system of trend by a logic entity or physical entity.
The present invention provides a kind of stream media play system in addition, comprising:
Command analysis module is used to receive and resolve the program source switching command that switches to target second program source from current first program source; Determine second program source after the switching, be notified to the broadcast Executive Module;
Play Executive Module, be used to receive stream medium data and the broadcast that acquisition module is gathered; Behind the program source switching command that receives the command analysis module transmission, be transmitted to acquisition module;
Acquisition module is used to gather the stream medium data of program source; After receiving described program source switching command, continue to gather the stream medium data of described first program source and send to described broadcast Executive Module and play; Stream medium data that start to gather described second program source simultaneously sends to the broadcast Executive Module, plays the stream medium data that stops to gather described first program source behind the stream medium data of described second program source when described broadcast Executive Module;
The code check comparison module is used for obtaining the corresponding code check of described first program source and second program source after described acquisition module starts the stream medium data of gathering described second program source, and compares the size of two program source code checks; When both are identical, send first instruction to described acquisition module; When both not simultaneously, send second instruction to described acquisition module, and the code rate information of described first program source be notified to described secondary coding-decoding module;
After described acquisition module receives described first instruction, the stream medium data of second program source of gathering is directly sent to described broadcast Executive Module; After receiving described second instruction, the stream medium data of second program source of gathering is sent to described secondary coding-decoding module;
The secondary coding-decoding module, be used for the stream medium data of described second program source that receives is carried out decoding processing, adopt the coding parameter of the corresponding code check of described first program source that the stream medium data of decoded second program source is encoded again again, and the stream medium data of second program source after will encoding again send to described broadcast Executive Module.
Described acquisition module comprises:
The data acquisition submodule is used to gather the stream medium data of program source;
The first instruction implementation sub-module is used for receiving and resolves described first instruction, and the stream medium data of second program source of gathering is sent to described broadcast Executive Module;
The second instruction implementation sub-module is used for receiving and resolves described second instruction, and the stream medium data of second program source of gathering is sent to described secondary coding-decoding module.
Also comprise:
The data buffering pond is connected between described secondary coding-decoding module and the described broadcast Executive Module; Be used for the stream medium data of second program source after the described secondary coding-decoding module of buffer memory is encoded again, and notify described broadcast Executive Module, the stream medium data of buffer memory is pushed to described broadcast Executive Module;
After described broadcast Executive Module receives notification message, stop to play the stream medium data of described first program source, receive the stream medium data and the broadcast that push second program source of coming.
Include record sub module in the described broadcast Executive Module, be used to write down the playing progress rate or the timestamp of described first program source of being ended broadcast, when needs switched back described first program source, playing progress rate or the timestamp according to first program source of record therefrom continued to play in the stop place again.
Beneficial effect of the present invention is as follows:
(1) adopts the present invention, after stream media play system receives the program source switching command, continue the stream medium data of current first program source before collection and broadcast are switched, and start the stream medium data of collection switching back second program source; Behind the valid data that collect second program source, stop to gather the stream medium data of first program source again, start the stream medium data of playing second program source simultaneously, realize switching to second program source from first program source.That is to say, the present invention continues to play the stream medium data of current program source earlier, when the stream medium data of second program source has been ready to play immediately when carrying out the program source switching, restart the stream medium data of playing second program source, reduce blank screen phase duration thereby reach.
2, in method provided by the invention, obtain the corresponding code check of second program source after switching preceding first program source and switching earlier in the streaming media playing side, and compare the size of two program source code checks; When both not simultaneously, earlier the stream medium data from the second program source collection is carried out decoding processing, adopt the coding parameter of the corresponding code check of first program source that the stream medium data of decoded second program source is encoded again again; Make that the code check of second program source is consistent with the first program source code rate, thereby do not need to notify in addition receiving terminal to carry out rate conversion, solved the picture problem of dtmf distortion DTMF that switching slot exists, and overcome in the prior art owing to the program source code check different notice receiving terminals that need in switching front and back carry out the problem that rate conversion causes increasing the network traffics expense.
Description of drawings
Fig. 1 is a program source switch method embodiment flow chart provided by the invention;
Fig. 2 is a stream media play system structural representation provided by the invention;
Fig. 3 A, Fig. 3 B are respectively the signal schematic representation that the prior art program source is switched and the inventive method program source is switched.
Embodiment
Referring to Fig. 1, be program source switch method embodiment flow chart provided by the invention, comprise following concrete steps:
Step S101, send the program source switching command that switches to target second program source from current first program source to stream media play system;
After step S102, stream media play system receive the program source switching command, continue to gather and play the stream medium data of first program source, and start the stream medium data of gathering second program source;
Step S103, obtain and the corresponding code check of first program source and second program source relatively, judge whether both are identical; If identical, execution in step S104 then; If both are inequality, then go to step S105;
Step S104, the direct stream medium data of playing second program source that has collected that starts stop to gather the stream medium data of described first program source, realize switching to second program source from first program source;
Step S105, the stream medium data from the second program source collection is carried out decoding processing;
Step S106, adopt the coding parameter of the corresponding code check of first program source that the stream medium data of decoded second program source is encoded again again;
Step S107, when getting access to again the stream medium data of second program source behind the coding, stop to gather the stream medium data of described first program source, the stream medium data after the encoding again of second program source is play in startup simultaneously, realizes switching to second program source from first program source.
Stream media play system structural representation provided by the invention comprises as shown in Figure 2:
Play Executive Module 12, be used to receive stream medium data and the broadcast that acquisition module 13 is gathered; After the program source switching notice that receives command analysis module 11 transmissions, be transmitted to acquisition module 13;
Code check comparison module 14 is used to obtain the corresponding code check of first program source and second program source, and compares the size of two program source code checks; When both are identical, send first instruction to described acquisition module 13, after acquisition module 13 receives first instruction, the stream medium data of second program source of gathering directly sent to play Executive Module 12;
When code check comparison module 14 is judged the code check that switches former and later two program source when inequality, send second instruction to described acquisition module 13, after collection module 13 receives second instruction, the stream medium data of second program source of gathering is sent to secondary coding-decoding module 15; Code check comparison module 14 also is notified to secondary coding-decoding module 15 with the code rate information of first program source;
Secondary coding-decoding module 15, stream medium data to second program source that receives carries out decoding processing, adopt the coding parameter of the corresponding code check of first program source that the stream medium data of decoded second program source is encoded again again, and the stream medium data of second program source after will encoding again send to and plays Executive Module 12 and play.
In addition, between secondary coding-decoding module 15 and broadcast Executive Module 12, can also connect a data Buffer Pool 16; The stream medium data that is used for second program source after buffer memory secondary coding-decoding module 15 is encoded again, when data buffering pond 16 detected this locality and stores data, notice was play Executive Module 12, and the stream medium data of buffer memory is pushed to play Executive Module 12; After broadcast Executive Module 12 receives notification message, stop to play the stream medium data of first program source, receive the stream medium data and the broadcast that push second program source of coming.
The data acquisition submodule is used to gather the stream medium data of program source;
The first instruction implementation sub-module is used for receiving and resolves described first instruction, the stream medium data of second program source of gathering is sent to play Executive Module 12;
The second instruction implementation sub-module is used for receiving and resolves described second instruction, and the stream medium data of second program source of gathering is sent to secondary coding-decoding module 15.
Switching between above-mentioned first program source and second program source is the switching between former and later two program source of general reference, and non-limiting can only the switching between two program source.
Describe stream media play system provided by the invention with a concrete use scene below and how to realize the program source switching.
Suppose just film of broadcast on network of current stream media play system, above-mentioned first program source of the corresponding the present invention of broadcast source of this film is provided; According to the requirement of operator, need in the playing process of film, break for commercialsy, above-mentioned second program source of the corresponding the present invention of broadcast source of advertisement is provided.Concrete handoff procedure is as follows:
1) commercial breaks when setting arrives constantly, sends the program source switching command by staff's manual mode to stream media play system; The concrete send mode of program source switching command can adopt various implementation of the prior art, for example: by opening a personal-machine interface, click switching menu, select switching target program source etc.; Also can preestablish the program source handoff list of switching in chronological order, when switching instant arrives, send the program source switching command from the trend stream media play system by a logic entity or physical entity without manual intervention.
2) command analysis module 11 receives and resolves current switching command, determines the advertising programme source after the switching, is notified to play Executive Module 12 and current movie program need be switched to correspondent advertisement and play.
3) play Executive Module 12 switching command is transmitted to acquisition module 13.
4) after acquisition module 13 receives the program source switching command, continue to gather the stream medium data in current movie program source on the one hand and send to broadcast Executive Module 12 to play; Start the stream medium data of gathering the advertising programme source simultaneously;
In the stream medium data while of two program source gatherer process, code check comparison module 14 obtains the corresponding code rate information of two program source, and compares the size of two program source code checks; When both are identical, send first instruction to acquisition module 13, when both are inequality, send second instruction to described acquisition module 13;
If a) receive first instruction that code check comparison module 14 sends, then the stream medium data in the advertising programme source of gathering is directly sent to and play Executive Module 12; And stop to gather the movie program source data simultaneously;
B) if receive second instruction that code check comparison module 14 sends, then the stream medium data with the advertising programme source of gathering sends to secondary coding-decoding module 15, and continues to gather and send the movie program source data and play to playing Executive Module 12.
When 5) playing Executive Module 12 and receive the stream medium data in the advertising programme source that acquisition module 13 gathers, stop the movie program, start and play advertisement; Otherwise, continue the movie program.
When 6) secondary coding-decoding module 15 receives the advertising programme source and course media data of acquisition module 13 transmissions, carry out decoding processing earlier, adopt the coding parameter of the corresponding code check in movie program source of code check comparison module 14 notices that decoded ad stream media data is encoded again again, and send to data buffering pond 16.
7) the ad stream media data after data buffering pond 16 buffer memory secondary coding-decoding modules 15 are encoded again, and be notified to broadcast Executive Module 12, the stream medium data with local cache is pushed to broadcast Executive Module 12 simultaneously.
8) after broadcast Executive Module 12 receives the notification message of data buffering pond 16 transmissions, stop the stream medium data of movie program source, notify acquisition module to stop to gather the movie program source data simultaneously, receive data buffering pond 16 and push the ad stream media data and the broadcast of coming.
9) play Executive Module 12 when stopping the movie program, the playing progress rate or the timestamp in record movie program source, after advertising programme finished, playing progress rate or the timestamp automatic switchover telegram in reply shadow program source according to the movie program source of writing down continued therefrom stop place movie program again.
In sum, the present invention continues to play the stream medium data of current program source earlier, when the stream medium data of second program source has been ready to play immediately when carrying out the program source switching, restart the stream medium data of playing second program source, reduce blank screen phase duration thereby reach.As shown in Figure 3A, when adopting the program source switch method of prior art, the playing programs before switching and switch after playing programs between have a blank screen phase, duration is Δ T;
ΔT＝t
2-t
1
In the following formula, t
2For starting, plays constantly the second program source stream medium data after switching; t
1Constantly corresponding for switching, t when adopting art methods
1Being the first program source and course media data stops to play constantly.
Blank screen phase duration Δ T, by data acquisition module from receive switching command to collect and encode according to correct code check after with data push to Buffer Pool institute spended time at interval, switch before program source code rate, factors such as the network effective bandwidth decision of switching back program source code rate and transmitting stream medium data.
And employing the inventive method, (t when receiving switching command
1Constantly), do not stop to play the stream medium data of first program source immediately, but the stream medium data of current first program source is play in continuation, and gather the stream medium data of second program source simultaneously, (t when the stream medium data of second program source has been ready to play
2Constantly) restart the stream medium data of playing second program source, and stop to play the stream medium data of first program source simultaneously, that is to say that the stream medium data that the stream medium data of first program source stops to play with second program source starts broadcast almost at the same moment (t
2Constantly) take place, thereby reduced the blank screen duration, shown in Fig. 3 B.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (8)
1. a program source switch method is applied to streaming media playing, it is characterized in that, comprising:
Send the program source switching command that switches to target second program source from current first program source to stream media play system;
After described stream media play system receives described program source switching command, continue to gather and play the stream medium data of described first program source, and start the stream medium data of gathering described second program source;
Obtain the corresponding code check of described first program source and second program source, and compare the size of two program source code checks;
When both are identical, directly start the stream medium data of playing described second program source that collects, stop to gather the stream medium data of described first program source, realize switching to second program source from first program source;
When both not simultaneously, earlier the stream medium data from the described second program source collection is carried out decoding processing, adopt the coding parameter of the corresponding code check of described first program source that the stream medium data of decoded second program source is encoded again again; When getting access to the stream medium data of second program source after encoding again, stop to gather the stream medium data of described first program source, the stream medium data after the encoding again of described second program source is play in startup simultaneously, realizes switching to second program source from first program source.
2. the method for claim 1, it is characterized in that, also comprise: the stream medium data after described second program source of buffer memory is encoded again, and notify the Executive Module of the broadcast in the described stream media play system is pushed to described broadcast Executive Module with the stream medium data of buffer memory;
After described broadcast Executive Module receives notification message, stop to play the stream medium data of described first program source, receive the stream medium data and the broadcast that push second program source of coming.
3. method as claimed in claim 2 is characterized in that, also comprises:
When ending to play the stream medium data of described first program source, write down the playing progress rate or the timestamp of described first program source, when needs switched back described first program source, playing progress rate or the timestamp according to first program source of record therefrom continued to play in the stop place again.
4. the method for claim 1 is characterized in that, describedly sends the program source switching command that switches to target second program source from current first program source to stream media play system, specifically comprises:
Send the program source switching command to described stream media play system manually; Perhaps
Preestablish the program source handoff list of switching in chronological order, when switching instant arrives, send the program source switching command from the described stream media play system of trend by a logic entity or physical entity.
5. a stream media play system is characterized in that, comprising:
Command analysis module is used to receive and resolve the program source switching command that switches to target second program source from current first program source; Determine second program source after the switching, be notified to the broadcast Executive Module;
Play Executive Module, be used to receive stream medium data and the broadcast that acquisition module is gathered; Behind the program source switching command that receives the command analysis module transmission, be transmitted to acquisition module;
Acquisition module is used to gather the stream medium data of program source; After receiving described program source switching command, continue to gather the stream medium data of described first program source and send to described broadcast Executive Module and play; Stream medium data that start to gather described second program source simultaneously sends to the broadcast Executive Module, plays the stream medium data that stops to gather described first program source behind the stream medium data of described second program source when described broadcast Executive Module;
The code check comparison module is used for obtaining the corresponding code check of described first program source and second program source after described acquisition module starts the stream medium data of gathering described second program source, and compares the size of two program source code checks; When both are identical, send first instruction to described acquisition module; When both not simultaneously, send second instruction to described acquisition module, and the code rate information of described first program source be notified to the secondary coding-decoding module;
After described acquisition module receives described first instruction, the stream medium data of second program source of gathering is directly sent to described broadcast Executive Module; After receiving described second instruction, the stream medium data of second program source of gathering is sent to described secondary coding-decoding module;
The secondary coding-decoding module, be used for the stream medium data of described second program source that receives is carried out decoding processing, adopt the coding parameter of the corresponding code check of described first program source that the stream medium data of decoded second program source is encoded again again, and the stream medium data of second program source after will encoding again send to described broadcast Executive Module.
6. system as claimed in claim 5 is characterized in that, described acquisition module comprises:
The data acquisition submodule is used to gather the stream medium data of program source;
The first instruction implementation sub-module is used for receiving and resolves described first instruction, and the stream medium data of second program source of gathering is sent to described broadcast Executive Module;
The second instruction implementation sub-module is used for receiving and resolves described second instruction, and the stream medium data of second program source of gathering is sent to described secondary coding-decoding module.
7. system as claimed in claim 5 is characterized in that, also comprises:
The data buffering pond is connected between described secondary coding-decoding module and the described broadcast Executive Module; Be used for the stream medium data of second program source after the described secondary coding-decoding module of buffer memory is encoded again, and notify described broadcast Executive Module, the stream medium data of buffer memory is pushed to described broadcast Executive Module;
After described broadcast Executive Module receives notification message, stop to play the stream medium data of described first program source, receive the stream medium data and the broadcast that push second program source of coming.
8. system as claimed in claim 7, it is characterized in that, include record sub module in the described broadcast Executive Module, be used to write down the playing progress rate or the timestamp of described first program source of being ended broadcast, when needs switched back described first program source, playing progress rate or the timestamp according to first program source of record therefrom continued to play in the stop place again.
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| CN101552791B (en) * | 2009-05-22 | 2012-09-19 | 腾讯科技（深圳）有限公司 | Method and system for playing multiple media file |
| CN103096178A (en) * | 2011-11-02 | 2013-05-08 | 腾讯科技（深圳）有限公司 | Method and device for playing stream media file |
| CN103366779A (en) * | 2012-04-10 | 2013-10-23 | 中兴通讯股份有限公司 | Method and device for automatic setting of sound-effect parameters |
| CN102905188B (en) * | 2012-11-01 | 2015-09-30 | 北京奇艺世纪科技有限公司 | A kind of video code flow changing method and device |
| CN104837056A (en) * | 2014-02-10 | 2015-08-12 | 中兴通讯股份有限公司 | Method and device for switching network television programs, and television system |
| CN103796075A (en) * | 2014-02-27 | 2014-05-14 | 广州视源电子科技股份有限公司 | Method and device for switching television paths and channels |
| CN103997680B (en) * | 2014-06-06 | 2017-10-24 | 上海众源网络有限公司 | The switching method and device of a kind of video code flow |
| CN105657520A (en) * | 2014-11-18 | 2016-06-08 | 乐视网信息技术（北京）股份有限公司 | Video definition switching method and video player |
| CN104902287A (en) * | 2015-05-14 | 2015-09-09 | 无锡天脉聚源传媒科技有限公司 | Video switching playing method and device |
| CN105635844A (en) * | 2016-01-12 | 2016-06-01 | 腾讯科技（深圳）有限公司 | Method and device for playing video in browser |
| CN106534952B (en) * | 2016-09-28 | 2021-12-24 | 海信视像科技股份有限公司 | Source switching back-film source continuous playing method and smart television |
| CN106375837B (en) * | 2016-11-14 | 2017-10-10 | 武汉斗鱼网络科技有限公司 | A kind of advertisement cut-in method and device |
| CN108156487A (en) * | 2016-12-02 | 2018-06-12 | 北京邦天信息技术有限公司 | A kind of video broadcasting method and device |
| CN106658155A (en) * | 2016-12-29 | 2017-05-10 | 深圳Tcl数字技术有限公司 | Method and device for switching and playing of player |
| CN111970572B (en) * | 2018-01-31 | 2022-05-17 | 聚好看科技股份有限公司 | Method for controlling video occlusion map on smart television |
| CN112135007B (en) * | 2020-08-25 | 2023-04-18 | 惠州华阳通用电子有限公司 | Streaming media visual angle switching method and system |
| CN113453063B (en) * | 2021-06-18 | 2023-04-07 | Vidaa(荷兰)国际控股有限公司 | Resource playing method and display equipment |
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