CN101887739B - Method and device for synchronizing media play - Google Patents
Method and device for synchronizing media play Download PDFInfo
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- CN101887739B CN101887739B CN2010102196210A CN201010219621A CN101887739B CN 101887739 B CN101887739 B CN 101887739B CN 2010102196210 A CN2010102196210 A CN 2010102196210A CN 201010219621 A CN201010219621 A CN 201010219621A CN 101887739 B CN101887739 B CN 101887739B
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000001360 synchronised effect Effects 0.000 claims abstract description 144
- 238000004364 calculation method Methods 0.000 claims description 12
- 238000004458 analytical method Methods 0.000 claims description 11
- 230000000694 effects Effects 0.000 abstract 1
- 238000005070 sampling Methods 0.000 description 12
- 230000008030 elimination Effects 0.000 description 5
- 238000003379 elimination reaction Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 238000002203 pretreatment Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4305—Synchronising client clock from received content stream, e.g. locking decoder clock with encoder clock, extraction of the PCR packets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
The invention discloses a method for synchronizing media play, belonging to the electronic technical field, which can acquire data of each synchronous reference of media play, takes a local system clock as reference to analyze the fluctuation of data of each synchronous reference, takes the synchronous reference corresponding to the data which has minimum fluctuation to implement synchronous operation of media play. The embodiment of the invention correspondingly provides media play equipment. The embodiment of the invention monitors the reliability of various synchronous references at real time, can identify the synchronous reference according to the actual condition of media play, and realizes dynamic regulation synchronous reference of media play, greatly eliminates the problems of audio/video pause and frame missing and the like brought by PTS and PCR, thus enabling the actual playing effect to achieve optimal smooth degree and improving the experience of users.
Description
Technical field
The present invention relates to electronic technology field, relate in particular to synchronous method of media play and device.
Background technology
Apparatus for media playing generally all has the synchronizing function that audio frequency and video are play, and promptly picture and sound are synchronous playing, and the user is provided good viewing experience, especially when playing the news category program, labial is very crucial to user experience synchronously.
At present, the method for synchronization of apparatus for media playing has following several kinds: audio sync, synchronous, the audio video synchronization of program clock reference (PCR, Programe Clock Reference).Said audio sync, promptly audio frequency followed in video and captions, and (PTS, Play Time Stamp) carries out synchronously for benchmark with the voice playing time stamp; Said PCR is synchronous, i.e. a program clock reference providing of program transmitting terminal, and audio frequency and video and captions are that benchmark carries out synchronously with this clock reference; Said audio video synchronization, promptly audio frequency and captions are that benchmark is realized synchronously with video PTS.
Below being that example is explained concrete synchronizing process shown in Fig. 1:
1) at first, the media device player is specified a synchronous base when the beginning playing media file, like audio frequency.This benchmark can be specified when developing by the developer, and perhaps the user specifies through the interface of player.
2) then, the media device player extracts the PTS of audio frequency from media data flow according to the synchronous base of appointment in playing process, generates a reference clock with this PTS.
3) when the data that will play asynchronous benchmark (video), at first, the PTS of the data of the asynchronous benchmark that play will be with the 2nd) reference clock that generates of step is relatively.If the PTS of the data of playing equates basically that with reference clock then play, this equates basically to be meant that PTS drops near the interval the reference clock, in this interval, human eye generally is difficult for discovering nonsynchronous situation.If the data of playing are early than reference clock, promptly PTS＜reference clock is interval, just abandons.Otherwise reference clock is interval just to be waited for if be later than, and PTS drops in the reference clock interval and plays by the time.
The inventor finds that there is following shortcoming at least in the method for synchronous of prior art in realizing process of the present invention:
When playing startup, just specified synchronous base, through developer or user interface appointment, though the user can specify once more in playing process; But after specifying; Player is with regard to this synchronous base of passive use, and the synchronous base of this appointment might be unstable in the playing process, perhaps do not exist; Just can't realize this moment each played data synchronously, may cause the audio frequency and video card, pause, phenomenon such as jump.
Summary of the invention
The embodiment of the invention provides synchronous method of a kind of media play and device, dynamically adjusts the media play synchronous base according to the actual conditions of media play.
The embodiment of the invention realizes through following technical scheme:
The embodiment of the invention provides a kind of media play synchronous method, comprising:
Obtain the data of each synchronous base of media play in real time;
With the local system clock is the fluctuation of the data of each synchronous base of reference analysis;
As current synchronous base, carry out media play simultaneous operation with the corresponding synchronous base of fluctuation minimal data.
The embodiment of the invention provides a kind of apparatus for media playing, comprising: media play unit, acquiring unit, analytic unit, synchronous base are confirmed the unit;
Said media play unit is used for playing media file;
Said acquiring unit is used for obtaining in real time the data of each synchronous base of media play;
Said analytic unit, being used for the local system clock is the fluctuation of the data of each synchronous base of reference analysis;
Said synchronous base is confirmed the unit, is used for the synchronous base of the corresponding synchronous base of fluctuation minimal data as the simultaneous operation of current executed media play;
Said media play unit also is used for confirming the synchronous base execution media play simultaneous operation that the unit is definite with said synchronous base.
Technical scheme by the invention described above embodiment provides can be found out; The reliability of several kinds of synchronous bases of monitoring that the embodiment of the invention is real-time; Can confirm synchronous base according to the actual conditions of media play, realize dynamic adjustment media play synchronous base, problems such as the audio frequency and video pause that maximum elimination often brings because of PTS, PCR, frame losing; Make actual result of broadcast reach best smooth degree, improve user experience.
Description of drawings
Fig. 1 is a prior art audio-visual synchronization process;
Fig. 2 is the synchronous method flow diagram of embodiment of the invention media play;
Fig. 3 is an embodiment of the invention interval division sketch map;
Fig. 4 is an one embodiment of the invention apparatus for media playing structural representation;
Fig. 5 is an another embodiment of the present invention apparatus for media playing structural representation;
Fig. 6 is an analytic unit structural representation in the embodiment of the invention apparatus for media playing;
Fig. 7 confirms the cellular construction sketch map for synchronous base in the embodiment of the invention apparatus for media playing;
Fig. 8 is that each unit matching realizes the media sync sketch map in the embodiment of the invention apparatus for media playing.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, and it is understandable that, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
One embodiment of the invention provides a kind of media play synchronous method, to be example shown in Fig. 2, comprises the steps:
Step 10: the data of obtaining each synchronous base of media play in real time;
Step 11: with the local system clock is the fluctuation of the data of each synchronous base of reference analysis;
Step 12: as current synchronous base, carry out media play simultaneous operation with the corresponding synchronous base of fluctuation minimal data.
Wherein, in step 10, the data of said each synchronous base of media play comprise: one or more among program clock reference PCR, audio frequency PTS or the video PTS, and promptly can be as the data of media play synchronous base;
Wherein, in step 11, said is that the fluctuation of the data of each synchronous base of reference analysis comprises with the local system clock:
S110: the data of said each synchronous base that will obtain and local system clock (STC, SystemTime Clock) relatively write down the deviate of the data of each synchronous base;
S111: after the time of obtaining the data of said each synchronous base reaches the stipulated time, calculate the mean value of deviate of the data of each synchronous base that is write down respectively to each synchronous base; For example, can stipulate every sampling after 1 minute, calculate the mean value of deviate of the data of said each synchronous base respectively.
S112: the deviate of adding up the data of each synchronous base respectively drops on each interval counting, and drops on the weighted sum of counting of each interval and each interval each synchronous base of coefficient calculations according to said deviate; The said mean value that said interval obtains for the data computation with each synchronous base is that N of center definition is interval, and N is the natural number greater than zero;
The method of calculating weighted sum can adopt following formula:
Weighted sum=interval 1 counts * and interval 1 coefficient+interval 2 counts * interval 2 coefficients+...+interval N counts * interval N coefficient.
Wherein, said interval 1 to distance＜said interval 2 at said center to the distance at said center＜...＜said interval N is to the distance at said center; Said interval 1 coefficient＞said interval 2 coefficients＞...＞said interval N system.To various synchronous bases, interval and each interval coefficient of being divided is identical.
S113: confirm the fluctuation size according to said weighted sum, promptly fluctuating becomes big along with reducing of weighted sum.
Wherein, In step 12; Said with the corresponding synchronous base of fluctuation minimal data as current synchronous base; Carrying out media play simultaneous operation comprises: generate reference clock according to said definite synchronous base, and carry out media play simultaneous operation with the reference clock that said reference clock generation unit generates.
The reliability of several kinds of synchronous bases of monitoring that the embodiment of the invention is real-time; Actual conditions according to media play are confirmed synchronous base; Realized dynamic adjustment media play synchronous base; Problems such as the audio frequency and video pause that maximum elimination often brings because of PTS, PCR, frame losing make actual result of broadcast reach best smooth degree, improve user experience.
For further understanding the present invention, illustrate the process of confirming synchronous base below, comprise following operation:
1) in the media play process, real-time sampling obtains PCR, audio frequency PTS and video PTS;
2) will sample the PCR, audio frequency PTS and the video PTS that obtain respectively with local system clock STC relatively, the record deviate;
For example, for the audio frequency PTS0 that obtains, PTS 1 ..., PTSn-1, the deviate of record is PTSDELTA0, PTSDELTA1 ..., PTSDELTAn-1; Wherein,
PTSDELTA0＝PTS0-STC；
PTSDELTA1＝PTS1-STC；
PTSDELTAn-1＝PTSn-1-STC；
3) sampling time reaches to return and fixes time, and after 1 minute, is directed against all deviation calculation mean values of the data record of each synchronous base respectively;
For example, for the deviate TSDELTA0 of the audio frequency PTS that writes down, PTSDELTA1 ..., PTSDELTAn-1, calculating mean value Avg:
Avg＝(PTSDELTA0+PTSDELTA1+...+PTSDELTAn-1)/n；
It is understandable that the embodiment of the invention is to reach the opportunity of stipulated time as calculating mean value with the sampling time, judge the calculating mean value mode on opportunity but do not get rid of other, for example, also can be when sampling reaches stipulated number calculating mean value.
For PCR and video PTS, according to calculating the deviate with the local system clock with the same method of audio frequency PTS calculation deviation value.
4) be the center with each mean value, define 5 intervals, statistics drops on each interval sampling number: S1, S2, S3, S4, S5; As shown in Figure 3 for Avg being the interval form of center definition;
The defined interval form of PCR, audio frequency PTS and video PTS is identical, promptly the time difference between each interval identical, each Interval System is also identical, interval center be the Avg according to the data computation acquisition of each synchronous base.
5) according to said drop on each interval sampling number (S1, S2, S3, S4, S5) and the weighted sum of each interval each synchronous base of coefficient calculations; In this instance between the setting district 1 coefficient be 16, dropping on interval 1 sampling number is S1, interval 2 coefficients are 8; The sampling number that drops on interval 2 is S2, and interval 3 coefficients are 4, and the sampling number that drops on interval 3 is S3; Interval 4 coefficients are 2; The sampling number that drops on interval 4 is S4, and interval 5 coefficients are 1, and the sampling number that drops on interval 5 is S5; Then the weighted sum computing formula is:
Weighted sum=S1*16+S2*8+S3*4+S4*2+S5;
6) judge the fluctuation size according to the weighted sum size of each synchronous base, weighted sum is big, and sampled point is just concentrated, and thinks that then fluctuation is less.Come to confirm the quality of PCR and sound/frequency PTS thus, the synchronous base that the synchronous base that fluctuation is minimum is play as current media, and, carry out media play simultaneous operation according to the synchronous base generation reference clock of confirming.
The embodiment of the invention has realized dynamic adjustment media play synchronous base, and problems such as the audio frequency and video pause that maximum elimination often brings because of PTS, PCR, frame losing make actual result of broadcast reach best smooth degree, improve user experience.
The embodiment of the invention also provides a kind of apparatus for media playing, and to be example shown in Fig. 4, this apparatus for media playing comprises: media play unit 40, acquiring unit 41, analytic unit 42, synchronous base are confirmed unit 43;
Said media play unit 40 is used for playing media file;
Said acquiring unit 41 is used for obtaining in real time the data of each synchronous base of media play; The data of said each synchronous base of media play comprise: program clock reference PCR, audio frequency PTS and video PTS, and promptly can be as the data of media play synchronous base;
Said analytic unit 42, being used for the local system clock is the fluctuation of the data of each synchronous base of reference analysis;
Said synchronous base is confirmed unit 43, is used for the synchronous base of the corresponding synchronous base of fluctuation minimal data as the simultaneous operation of current executed media play;
Said media play unit 40 also is used for confirming the synchronous base execution media play simultaneous operation that the unit is definite with said synchronous base.
As shown in Figure 5, said media player can also comprise:
As shown in Figure 6, said analytic unit 42 may further include:
Mean value calculation subelement 422 is used for after the time that said acquiring unit obtains the data of said each synchronous base reaches the stipulated time, respectively to the deviate calculating mean value of the data of each synchronous base of said record:
Statistics subelement 423, the deviate that is used to add up the data of each synchronous base drops on each interval counting; Said interval is for each said mean value being N interval of center definition, and N is the natural number greater than zero;
Weighted sum computation subunit 424 is used for dropping on each interval counting and the weighted sum of each interval each synchronous base of coefficient calculations according to said deviate, and fluctuation becomes big along with reducing of weighted sum.
It is understandable that the structure of the said analytic unit of the embodiment of the invention is merely the cited a kind of embodiment of inventor, under the prerequisite that realizes the current function of analytic unit, other structures are divided all in protection range of the present invention.
As shown in Figure 7, said synchronous base confirms that unit 43 may further include:
Synchronous base is confirmed subelement 431, is used for the synchronous base of the corresponding synchronous base of fluctuation minimal data as the simultaneous operation of current executed media play;
Reference clock generates subelement 432, is used for generating reference clock according to the synchronous base of confirming.
As shown in Figure 8; Realize the media sync sketch map for cooperating between each unit of the described apparatus for media playing of the embodiment of the invention, media data is through pre-treatment, and this pre-treatment process embodiment of the invention is not done qualification to this; For example comprise the processing of demultiplexing; After the pre-treatment, acquiring unit obtains the data of each synchronous base, for example comprises: PCR, audio frequency PTS and video PTS.The time that clock supervision unit monitoring acquiring unit obtains the data of said each synchronous base; This time is offered analytic unit; After acquisition time reaches the stipulated time; This analytic unit begins the execution analysis operation, promptly is the fluctuation of the data of each synchronous base of reference analysis with the local system clock, and synchronous base is confirmed the analysis result of unit according to this analytic unit afterwards; Know the quality of each synchronous base; Confirm to calculate reference clock with the synchronous base of the corresponding synchronous base of fluctuation minimal data as the simultaneous operation of current executed media play according to this synchronous base of confirming, media play unit is carried out media play simultaneous operation according to this reference clock.
The reliability of several kinds of synchronous bases of monitoring that the said apparatus for media playing of the embodiment of the invention is real-time; Can confirm synchronous base according to the actual conditions of media play; Realized dynamic adjustment media play synchronous base; Problems such as the audio frequency and video pause that maximum elimination often brings because of PTS, PCR, frame losing make actual result of broadcast reach best smooth degree, improve user experience.
In sum; The reliability of several kinds of synchronous bases of monitoring that the embodiment of the invention is real-time; Can confirm synchronous base according to the actual conditions of media play, realize dynamic adjustment media play synchronous base, problems such as the audio frequency and video pause that maximum elimination often brings because of PTS, PCR, frame losing; Make actual result of broadcast reach best smooth degree, improve user experience.
One of ordinary skill in the art will appreciate that; Realize that all or part of step in the foregoing description method is to instruct relevant hardware to accomplish through program; Described program can be stored in the computer-readable recording medium, for example read-only memory (being called for short ROM), random access memory (being called for short RAM), disk, CD etc.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (7)
1. the method that media play is synchronous is characterized in that, comprising:
Obtain the data of each synchronous base of media play in real time;
With the local system clock is the fluctuation of the data of each synchronous base of reference analysis;
As current synchronous base, carry out media play simultaneous operation with the corresponding synchronous base of fluctuation minimal data, wherein, said is that the fluctuation of the data of each synchronous base of reference analysis comprises with the local system clock:
The data and the local system clock of said each synchronous base that obtains are compared, write down the deviate of the data of each synchronous base; After the time of the data of obtaining said each synchronous base reaches the stipulated time, calculate the mean value of deviate of the data of each synchronous base that is write down respectively to each synchronous base;
The deviate of adding up the data of each synchronous base respectively drops on each interval counting, and drops on the weighted sum of counting of each interval and each interval each synchronous base of coefficient calculations according to said deviate; Said interval is for the mean value that is calculated being N interval of center definition, and N is the natural number greater than zero; It is big that the fluctuation of the data of each synchronous base becomes along with reducing of weighted sum.
2. the method for claim 1 is characterized in that, saidly drops on each interval counting and the weighted sum of each interval each synchronous base of coefficient calculations comprises according to said deviate:
Weighted sum=interval 1 counts * and interval 1 coefficient+interval 2 counts * interval 2 coefficients+...+interval N counts * interval N coefficient.
3. method as claimed in claim 2 is characterized in that, said interval 1 distance to said center said interval 2 distances to said center ... < said interval N is to the distance at said center; Said interval 1 coefficient>said interval 2 coefficients>... said interval N coefficient.
4. method as claimed in claim 2 is characterized in that, to each synchronous base, interval and each interval coefficient of being divided is identical.
5. an apparatus for media playing is characterized in that, comprising: media play unit, acquiring unit, analytic unit, synchronous base are confirmed the unit;
Said media play unit is used for playing media file;
Said acquiring unit is used for obtaining in real time the data of each synchronous base of media play;
Said analytic unit, being used for the local system clock is the fluctuation of the data of each synchronous base of reference analysis;
Said synchronous base is confirmed the unit, is used for the synchronous base of the corresponding synchronous base of fluctuation minimal data as the simultaneous operation of current executed media play;
Said media play unit also is used for confirming the synchronous base execution media play simultaneous operation that the unit is definite with said synchronous base;
Said analytic unit further comprises:
Deviation record subelement is used for the data and the local system clock of said each synchronous base that obtains are compared, and writes down the deviate of the data of each synchronous base;
The mean value calculation subelement is used for after the time that said acquiring unit obtains the data of said each synchronous base reaches the stipulated time, calculates the mean value of deviate of the data of each synchronous base that is write down respectively to each synchronous base;
The statistics subelement, the deviate that is used to add up the data of each synchronous base drops on each interval counting; Said interval is for the mean value that is calculated being N interval of center definition, and N is the natural number greater than zero;
The weighted sum computation subunit is used for dropping on each interval counting and the weighted sum of each interval each synchronous base of coefficient calculations according to said deviate, and fluctuation becomes big along with reducing of weighted sum.
6. media player as claimed in claim 5 is characterized in that, also comprises:
Clock supervision unit is used to monitor the time that said acquiring unit obtains the data of said each synchronous base, offers said mean value calculation subelement as the opportunity of judging calculating mean value.
7. like claim 5 or 6 described media players, it is characterized in that said synchronous base confirms that the unit further comprises:
Synchronous base is confirmed subelement, is used for the synchronous base of the corresponding synchronous base of fluctuation minimal data as the simultaneous operation of current executed media play;
Reference clock generates subelement, is used for generating reference clock according to the synchronous base of confirming.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010102196210A CN101887739B (en) | 2010-06-25 | 2010-06-25 | Method and device for synchronizing media play |
| PCT/CN2011/074986 WO2011150826A1 (en) | 2010-06-25 | 2011-05-31 | Method and device for synchronization during media playback |
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| CN2010102196210A CN101887739B (en) | 2010-06-25 | 2010-06-25 | Method and device for synchronizing media play |
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| CN101887739B true CN101887739B (en) | 2012-07-04 |
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| CN101887739B (en) * | 2010-06-25 | 2012-07-04 | 华为技术有限公司 | Method and device for synchronizing media play |
| CN105721920B (en) * | 2014-12-04 | 2019-04-02 | 中国移动通信集团公司 | A kind of media cooperate with the method, apparatus and terminal of broadcasting in more equipment |
| US9532099B2 (en) * | 2015-03-24 | 2016-12-27 | Intel Corporation | Distributed media stream synchronization control |
| CN107515825B (en) * | 2017-08-22 | 2021-05-25 | 网易（杭州）网络有限公司 | Fluency testing method and device, storage medium and terminal |
| CN110858922A (en) * | 2018-08-23 | 2020-03-03 | 晨星半导体股份有限公司 | Operation method of digital video and audio device |
| CN114339353B (en) * | 2021-12-31 | 2023-09-29 | 晶晨半导体科技(北京)有限公司 | Audio/video synchronization method and device, electronic equipment and computer readable storage medium |
| CN114397671B (en) * | 2022-03-24 | 2022-08-16 | 智道网联科技(北京)有限公司 | Course angle smoothing method and device of target and computer readable storage medium |
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| CN1436001A (en) * | 2002-01-28 | 2003-08-13 | 北京华诺信息技术有限公司 | Method for synchronizing video with audio in decoding system |
| CN101083771A (en) * | 2006-05-31 | 2007-12-05 | 松下电器产业株式会社 | Stream data processing apparatus and stream data processing method |
| CN101710997A (en) * | 2009-11-04 | 2010-05-19 | 中兴通讯股份有限公司 | MPEG-2 (Moving Picture Experts Group-2) system based method and system for realizing video and audio synchronization |
| CN101729906A (en) * | 2008-10-16 | 2010-06-09 | 财团法人工业技术研究院 | Implement television system and synchronization playing stream service method thereof |
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| JP2005123789A (en) * | 2003-10-15 | 2005-05-12 | Matsushita Electric Ind Co Ltd | Av synchronization system |
| KR101263522B1 (en) * | 2004-09-02 | 2013-05-13 | 소니 주식회사 | Content receiver, video-audio output timing control method, and content providing system |
| CN101887739B (en) * | 2010-06-25 | 2012-07-04 | 华为技术有限公司 | Method and device for synchronizing media play |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1436001A (en) * | 2002-01-28 | 2003-08-13 | 北京华诺信息技术有限公司 | Method for synchronizing video with audio in decoding system |
| CN101083771A (en) * | 2006-05-31 | 2007-12-05 | 松下电器产业株式会社 | Stream data processing apparatus and stream data processing method |
| CN101729906A (en) * | 2008-10-16 | 2010-06-09 | 财团法人工业技术研究院 | Implement television system and synchronization playing stream service method thereof |
| CN101710997A (en) * | 2009-11-04 | 2010-05-19 | 中兴通讯股份有限公司 | MPEG-2 (Moving Picture Experts Group-2) system based method and system for realizing video and audio synchronization |
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| WO2011150826A1 (en) | 2011-12-08 |
| CN101887739A (en) | 2010-11-17 |
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