CN101166264B - Playing method and system for stream media program switch - Google Patents
Playing method and system for stream media program switch Download PDFInfo
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- CN101166264B CN101166264B CN200610150531A CN200610150531A CN101166264B CN 101166264 B CN101166264 B CN 101166264B CN 200610150531 A CN200610150531 A CN 200610150531A CN 200610150531 A CN200610150531 A CN 200610150531A CN 101166264 B CN101166264 B CN 101166264B
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Abstract
Set-top box receives command of switching programs. Based on the command, set-top box requests for data from stream media server and receives data from new channel. In data from the new channel, audio data lags behind the video data. Controlling speed for playing back data in new channel to make speed for playing back audio data unchanged, and speed for playing back video data slackened till audio data and video data are played back synchronistically. The invention makes user feel that when key for switching channel is pressed down, the content in the new channel can be displayed on screen at once, or feel that display time delay is small when channel is switched so that user's tasting is improved greatly.
Description
Technical field
The present invention relates to the streaming media playing technology, relate in particular to a kind of flow-medium performance player method and the system when switching.
Background technology
Along with the development of broadband and stream media technology, the technology of IPTV (Internet ProtocolTelevision, Web TV) STB also progressively grows up.Generally all by sending on the network after the head end encoder Real Time Compression, in order to improve the image encoding effect, encoder generally all can preferentially send video data the programme televised live of IPTV, and voice data will lag behind video data several seconds.Schematically, the encoder sequence of giving out a contract for a project is as follows:
Voice data A10 A20 A30 A40 A50 ... A100
Video data V10 V20 V30 V40 V50 V60 V70 V80 ... V130
Wherein, expression reproduction times (timestamp) such as A10, A20 are 10,20 packets of audio data, and expression reproduction times such as V10, V20 are 10,20 video packets of data.From left to right, the presentation code device sequencing of giving out a contract for a project.In the above-mentioned example, almost all there are 30 chronomeres the time difference of each moment audio, video data.
Below hypothesis we get into when live, be A30 constantly, modem top box does not before receive that all video data begins to receive from V60.
For the broadcast of audio frequency and video, generally all require labial synchronous, it is identical or close just keeping the time stamp of the audio, video data of broadcast as far as possible.For above-mentioned data sequence, the method below generally all adopting is in the past play.Schematically, traditional player method one is following:
Voice data A30 A40 A50 A60 A70 ... A100 A110 A120
Video data NUL NUL NUL V60 V70 ... V100 V110 V120
NUL partly representes not have video data output here, shows the data of a blank screen or a last program, rather than the video data V60 that has just received.Owing to be live, can only get the current data of sending of streaming media server, and can not fetch data in advance, that is to say that when receiving video V60, audio A 60 is not also received, only received A30 at that time, A60 also need wait for 30 chronomeres.Here just play back audio A 30 earlier, played in order audio A 40, A50 again, and after audio A 60 was received by the time, video V60 began to show that follow-up video sequence begins to play.This situation, user's experience be, press the remote controller switching channels after, hear sound earlier, see the television image blank screen or rest on the picture of a channel, waited several seconds after, just begin to occur the picture of new channel, audio-visual synchronization broadcast.It is very slow that the user feels that channel switches, and have only audio frequency, do not have video, feels very awkward.
Also have player method to improve as follows, also do not play the voice data that begins, traditional player method two is following:
Voice data NUL NUL NUL A60 A70 ... A100 A110 A120
Video data NUL NUL NUL V60 V70 ... V100 V110 V120
NUL representes not play sound and video, and user's experience is, pressed remote controller after, do not have sound not have video yet, after a period of time of pausing, the audio-visual synchronization of new channel is play.
Two kinds of situation all need be waited for and receive the complete data in synchronization of audio frequency and video, mainly are ability display videos behind the A60, and the blank screen or the dead time in several seconds arranged.It is chronic that the user feels to wait for that channel switches, and the STB response speed is very slow, experiences with the conventional analogue TV operation and compare, and has very big contrast, feels very bad.
The root that this situation occurs is that encoder transmission data are asynchronous, and the STB demonstration need guarantee that audio frequency and video are play synchronously as far as possible.In order to improve the coding effect, existing encoder has nearly all adopted the mode of giving out a contract for a project of audio frequency hysteresis, and switch speed is with better experience effect is to the user faster therefore to want to provide one, and STB must overcome the defective that this encoder data is sent sequence.
Summary of the invention
Player method and system when main purpose of the present invention is to provide a kind of flow-medium performance to switch show when being used to be implemented in flow-medium performance (channel) switching and quicken, and overcome the defective that the encoder audio frequency is given out a contract for a project and lagged behind, and improve user's operating experience.
To achieve these goals, according to a first aspect of the invention, the player method when the invention provides a kind of flow-medium performance and switching.Player method may further comprise the steps:
Step S102, STB program receiving switching command;
Step S104, according to the program switching command, STB is from the streaming media server request and receive the data of new channel, and in the data of new channel, voice data lags behind video data;
Step S106, the broadcasting speed of the data of control new channel makes that the broadcasting speed of voice data is constant, the broadcasting speed of video data is slack-off, until voice data and video data synchronous playing.
In step S102, STB can come the program receiving switching command through the wireless signal that receives from remote controller.Preferably, remote controller comprises the program switch key, and the program switch key comprises increases key, reduce at least a in key and the numerical key, and remote controller is used for when pressing the program switch key, sending the wireless signal that comprises the corresponding command.
Preferably; In step S106; In case receive the data of new channel, play voice data and the video data that is received simultaneously with nonsynchronous mode at once, and make that the broadcasting speed of voice data is constant; The broadcasting speed of video data is slack-off, until voice data and video data synchronous playing.
In step S106, can make the broadcasting speed of video data slack-off through the mode that per four frames repeat a frame.If STB is in the pal mode of 25 frame/seconds,, make the broadcasting speed of video data slack-off then with the speed playing video data of 20 frame/seconds.If STB is in the TSC-system formula of 30 frame/seconds,, make the broadcasting speed of video data slack-off then with the speed playing video data of 24 frame/seconds.
To achieve these goals, according to a second aspect of the invention, the invention provides a kind of Play System that flow-medium performance switches that is used for.Play System comprises: STB is used for the program receiving switching command; Streaming media server is used to receive the program handoff request from STB, and sends the data of new channel to STB; Transmit control module is positioned at the STB side, is used to control the broadcasting speed of the data of new channel, makes that wherein the broadcasting speed of voice data is constant, and the broadcasting speed of video data is slack-off, until voice data and video data synchronous playing.
Play System can also comprise remote controller, is used for sending the wireless signal that comprises the program switching command to STB.Preferably, remote controller comprises the program switch key, and the program switch key comprises increases key, reduce at least a in key and the numerical key, and remote controller is used for when pressing the program switch key, sending the wireless signal that comprises the corresponding command.
Preferably; In case receive the data of new channel; Voice data and video data that transmit control module control is received are play with nonsynchronous mode at once simultaneously; And make that the broadcasting speed of voice data is constant, the broadcasting speed of video data is slack-off, until voice data and video data synchronous playing.
Transmit control module can make the broadcasting speed of video data slack-off through the mode that per four frames repeat a frame.If STB is in the pal mode of 25 frame/seconds, then transmit control module was controlled to be for 20 frame/seconds with the broadcasting speed of video data, so that the broadcasting speed of video data is slack-off.If STB is in the TSC-system formula of 30 frame/seconds, then transmit control module was controlled to be for 24 frame/seconds with the broadcasting speed of video data, so that the broadcasting speed of video data is slack-off.
Through technique scheme, when the invention enables the user to feel to press the channel switch key, new channel content can be shown on the screen at once, shows when sensation is switched that time delay is very little, and user experience is greatly improved.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to player method of the present invention;
Fig. 2 is the block diagram according to Play System of the present invention;
Fig. 3 is the system's composition diagram according to the embodiment of the invention; And
Fig. 4 is the system's main flow chart according to the embodiment of the invention.
Embodiment
Specify the present invention below with reference to accompanying drawing.
With reference to figure 1, the player method when switching according to flow-medium performance of the present invention may further comprise the steps:
Step S102, STB program receiving switching command.
STB can come the program receiving switching command through the wireless signal that receives from remote controller.Preferably, remote controller comprises the program switch key, and the program switch key comprises increases key, reduce at least a in key and the numerical key, and remote controller is used for when pressing the program switch key, sending the wireless signal that comprises the corresponding command.
Step S104, according to the program switching command, STB is from the streaming media server request and receive the data of new channel, and in the data of new channel, voice data lags behind video data.
Step S106, the broadcasting speed of the data of control new channel makes that the broadcasting speed of voice data is constant, the broadcasting speed of video data is slack-off, until voice data and video data synchronous playing.
Preferably; In case receive the data of new channel, play voice data and the video data that is received simultaneously with nonsynchronous mode at once, and make that the broadcasting speed of voice data is constant; The broadcasting speed of video data is slack-off, until voice data and video data synchronous playing.
Can make the broadcasting speed of video data slack-off through the mode that per four frames repeat a frame.If STB is in the pal mode of 25 frame/seconds,, make the broadcasting speed of video data slack-off then with the speed playing video data of 20 frame/seconds.If STB is in the TSC-system formula of 30 frame/seconds,, make the broadcasting speed of video data slack-off then with the speed playing video data of 24 frame/seconds.
With reference to Fig. 2, the Play System 10 that is used for the flow-medium performance switching comprises: STB 20 is used for the program receiving switching command; Streaming media server 30 is used to receive the program handoff request from STB 20, and sends the data of new channels to STB 20; Transmit control module 40 is positioned at STB 20 sides, is used to control the broadcasting speed of the data of new channel, makes that wherein the broadcasting speed of voice data is constant, and the broadcasting speed of video data is slack-off, until voice data and video data synchronous playing.
Play System 10 can also comprise remote controller, is used for sending the wireless signal that comprises the program switching command to STB 20.Preferably, remote controller comprises the program switch key, and the program switch key comprises increases key, reduce at least a in key and the numerical key, and remote controller is used for when pressing the program switch key, sending the wireless signal that comprises the corresponding command.
Preferably; In case receive the data of new channel; Voice data and video data that transmit control module 40 controls are received are play with nonsynchronous mode at once simultaneously; And make that the broadcasting speed of voice data is constant, the broadcasting speed of video data is slack-off, until voice data and video data synchronous playing.
Transmit control module 40 can make the broadcasting speed of video data slack-off through the mode that per four frames repeat a frame.If STB 20 is in the pal mode of 25 frame/seconds, then transmit control module 40 was controlled to be for 20 frame/seconds with the broadcasting speed of video data, so that the broadcasting speed of video data is slack-off.If STB 20 is in the TSC-system formula of 30 frame/seconds, then transmit control module 40 was controlled to be for 24 frame/seconds with the broadcasting speed of video data, so that the broadcasting speed of video data is slack-off.
The present invention relates to the realization technology of IPTV field of set-top, especially improve the method that the IPTV set-top box users is experienced.
When the invention discloses a kind of live broadcast stream media program, shorten programs of set-top box handoff response time method.The booster response system comprises remote controller, STB, display and streaming media server.Remote controller is provided with program (channel) switch key, and after the user pressed, STB switched to a new channel; Show the program of new channel, generally speaking, begin to have the blank screen time in several seconds; After using accelerated method of the present invention; Can overcome existing encoder data transmission audio frequency and video has the very defective of large time difference, shortens the blank screen time, improves the effect of user's operating experience greatly.
Add speed indication system and comprise following equipment: remote controller, STB, display and streaming media server.
At least be provided with on the remote controller: increase key, reduce key, numerical key.Remote controller can send wireless signal to STB.
STB can receive the wireless signal of remote controller, and carries out corresponding instruction according to corresponding button.
Display shows according to the control of STB accordingly.
Streaming media server sends corresponding media data according to respective protocol and STB communication to STB.
In order to overcome the defective that the encoder audio frequency is given out a contract for a project and lagged behind, this method is started with from changing broadcasting speed according to people's the impression custom different with image to sound, shifts to an earlier date the data playback of video constantly, and finally progressively lets audio-visual synchronization play.
When changing the audio frequency and video broadcasting speed, be noted that the broadcasting speed that can only change video; Because the broadcasting speed change at audio frequency is easy to discovered; And sound very unnatural, if it is change video playout speed, much smaller to user's experience influence; If it is not very big changing, generally be difficult for discovering.Schematically, player method of the present invention is following:
Voice data A10 A20 A30 A40 A50 ... A100 A110 A120
Video data V40 V40 V50 V50 V50 ... V100 V110 V120
As implied above, after STB was got media data, beginning was play not according to strict synchronism, but display image as early as possible plays sound, and let the user that a kind of impression of channel handover success is arranged.Then, let the broadcasting speed of video slow down, video data V40, the V50 of front done repeat play in the above-mentioned example; Be equivalent to slow down broadcasting speed, and audio frequency is pressed normal speed forward, audio frequency is faster than the broadcasting speed of video; Let audio frequency catch up with video at last gradually, realize synchronous playing.
Concrete control as follows, if STB is under the Phase Alternation Line system, 25 frame/seconds; We adopt per 4 frames to repeat the method displaying video of a frame, and the result is exactly the speed Switch Video content of 20 frame/seconds so, and correspondence is if the TSC-system formula; 30 frame/seconds, same also is adopts per 4 frames to repeat the method displaying video of a frame, and the result is 24 frames/second speed Switch Video contents; The pause effect is very slight; Ordinary circumstance note less than, but the video demonstration time shifted to an earlier date a lot, the sensation of giving the user is good more a lot of than in the past.
As can beappreciated from fig. 3 the positioning playing system is made up of remote controller, STB, display and streaming media server.
At least be provided with on the remote controller: increase key, reduce key, numerical key.Remote controller can send wireless signal to STB.
STB can receive the wireless signal of remote controller, and carries out corresponding instruction according to corresponding button.STB can be realized the controlled function of video request program.
Display shows according to the control of STB accordingly.
Streaming media server sends corresponding media data according to respective protocol and STB communication to STB.
With reference to Fig. 4, the implementation method of positioning playing is following:
1, STB gets into the playing programs process of net cast.
According to the method that STB provides, user selected channel gets into the programme televised live playing process.
2, the user presses program (channel) switch key, for example increases key, reduces key or numerical key, and STB is received key information, sends request to streaming media server, needs to receive the data of new channel.After the media data of new channel was received, decoding also showed.
3, controls playing speed is done and is quickened to show.If STB is under the Phase Alternation Line system, 25 frame/seconds, we adopt per 4 frames to repeat the method displaying video of a frame; The result is exactly the speed Switch Video content of 20 frame/seconds so, and correspondence is if the TSC-system formula, 30 frame/seconds; Same also is adopts per 4 frames to repeat the method displaying video of a frame, and the result is 24 frames/second speed Switch Video contents, and the pause effect is very slight; Ordinary circumstance note less than, but the video demonstration time shifted to an earlier date a lot, the sensation of giving the user is good more a lot of than in the past.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. the player method a when flow-medium performance switches is characterized in that, may further comprise the steps:
Step S102, STB program receiving switching command;
Step S104, according to said program switching command, said STB is from the streaming media server request and receive the data of new channel, and in the data of said new channel, voice data lags behind video data;
Step S106 controls the broadcasting speed of the data of said new channel, makes that the broadcasting speed of said voice data is constant, and the broadcasting speed of said video data is slack-off, until said voice data and said video data synchronous playing.
2. player method according to claim 1 is characterized in that, in step S102, said STB receives said program switching command through the wireless signal that receives from remote controller.
3. player method according to claim 2; It is characterized in that; Said remote controller comprises the program switch key; Said program switch key comprises increases key, reduce at least a in key and the numerical key, and said remote controller is used for when pressing said program switch key, sending the wireless signal that comprises the corresponding command.
4. player method according to claim 1; It is characterized in that, in step S106, in case receive the data of said new channel; Play said voice data and the said video data that is received simultaneously with nonsynchronous mode at once; And make that the broadcasting speed of said voice data is constant, the broadcasting speed of said video data is slack-off, until said voice data and said video data synchronous playing.
5. according to claim 1 or 4 described player methods, it is characterized in that in step S106, the mode that repeats a frame through per four frames makes the broadcasting speed of said video data slack-off.
6. player method according to claim 5 is characterized in that, if said STB is in the pal mode of 25 frame/seconds, then plays said video data with the speed of 20 frame/seconds, makes the broadcasting speed of said video data slack-off.
7. player method according to claim 5 is characterized in that, if said STB is in the TSC-system formula of 30 frame/seconds, then plays said video data with the speed of 24 frame/seconds, makes the broadcasting speed of said video data slack-off.
8. one kind is used for the Play System that flow-medium performance switches, and it is characterized in that, comprising:
STB is used for the program receiving switching command;
Streaming media server is used to receive the program handoff request from said STB, and the data of sending new channel to said STB, and wherein, in the data of said new channel, voice data lags behind video data;
Transmit control module is positioned at said STB side, is used to control the broadcasting speed of the data of said new channel, makes that wherein the broadcasting speed of voice data is constant, and the broadcasting speed of video data is slack-off, until said voice data and said video data synchronous playing.
9. Play System according to claim 8 is characterized in that, also comprises remote controller, is used for sending the wireless signal that comprises said program switching command to said STB.
10. Play System according to claim 9; It is characterized in that; Said remote controller comprises the program switch key; Said program switch key comprises increases key, reduce at least a in key and the numerical key, and said remote controller is used for when pressing said program switch key, sending the wireless signal that comprises the corresponding command.
11. Play System according to claim 8; It is characterized in that; In case receive the data of said new channel, said voice data and said video data that said transmit control module control is received are play with nonsynchronous mode at once simultaneously, and make that the broadcasting speed of said voice data is constant; The broadcasting speed of said video data is slack-off, until said voice data and said video data synchronous playing.
12. according to Claim 8 or 11 described Play Systems, it is characterized in that the mode that said transmit control module repeats a frame through per four frames makes the broadcasting speed of said video data slack-off.
13. Play System according to claim 12; It is characterized in that; If said STB is in the pal mode of 25 frame/seconds, then said transmit control module was controlled to be for 20 frame/seconds with the broadcasting speed of said video data, so that the broadcasting speed of said video data is slack-off.
14. Play System according to claim 12; It is characterized in that; If said STB is in the TSC-system formula of 30 frame/seconds, then said transmit control module was controlled to be for 24 frame/seconds with the broadcasting speed of said video data, so that the broadcasting speed of said video data is slack-off.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102413335A (en) * | 2010-09-20 | 2012-04-11 | 深圳Tcl新技术有限公司 | Manual adjustment device and method for program audio and video synchronization |
| CN103188565A (en) * | 2011-12-30 | 2013-07-03 | 北京朝歌数码科技股份有限公司 | Channel switching system and channel switching method |
| CN105025196B (en) * | 2015-07-06 | 2019-04-02 | 深圳Tcl数字技术有限公司 | The method, apparatus and television set of audio-visual synchronization |
| CN111355976B (en) * | 2020-03-31 | 2022-10-11 | 北京东方国信科技股份有限公司 | Video live broadcast method and system based on HEVC standard |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1472959A (en) * | 2002-07-30 | 2004-02-04 | 华为技术有限公司 | Device and method for realizing conversion between various VF flow formats |
| CN1491516A (en) * | 2001-10-18 | 2004-04-21 | ���µ�����ҵ��ʽ���� | Video/Audio reproducing apparatus, and reproducing method and program and medium |
| CN1700757A (en) * | 2004-05-13 | 2005-11-23 | 美国博通公司 | System and method for high-quality variable speed playback of audio-visual media |
| CN1720748A (en) * | 2002-12-04 | 2006-01-11 | 皇家飞利浦电子股份有限公司 | Synchronization of signals |
-
2006
- 2006-10-16 CN CN200610150531A patent/CN101166264B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1491516A (en) * | 2001-10-18 | 2004-04-21 | ���µ�����ҵ��ʽ���� | Video/Audio reproducing apparatus, and reproducing method and program and medium |
| CN1472959A (en) * | 2002-07-30 | 2004-02-04 | 华为技术有限公司 | Device and method for realizing conversion between various VF flow formats |
| CN1720748A (en) * | 2002-12-04 | 2006-01-11 | 皇家飞利浦电子股份有限公司 | Synchronization of signals |
| CN1700757A (en) * | 2004-05-13 | 2005-11-23 | 美国博通公司 | System and method for high-quality variable speed playback of audio-visual media |
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