CN102740131A - Real-time transport protocol-based network television direct transmission method and system - Google Patents
Real-time transport protocol-based network television direct transmission method and system Download PDFInfo
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Abstract
The invention discloses a real-time transport protocol-based network television direct transmission method which comprises the steps of: coding: packing video source data received by a television transmission control platform into data messages in RTP/RTCP/RTSP (Real Time Protocol/Real-time Transport Control Protocol/Real Time Streaming Protocol) formats, inserting an additional field carrying accurate play time into each packed data message, and then sending the data message inserted with the additional field to a transmission system according to preset sending time, wherein the preset sending time is one preset safety time at least advancing the accurate play time carried by the additional field; transmitting: sending the data messages to a network play terminal by the transmission system through a distributing system; and playing through a network: after receiving the data messages, playing program contents of the data messages according to the accurate play time carried in the additional fields. The invention also discloses a real-time transport protocol-based network television direct transmission system. According to the invention, the problem of play delay in a network television transmission process can be effectively solved.
Description
Technical field
The present invention relates to stream media technology, relate in particular to a kind of IPTV method and system based on RTP.
Background technology
Along with popularizing of the Internet, TV tech, Development of Multimedia Technology utilize the demand of Network Transmission sound and vision signal also increasing.Medium such as broadcasting, TV also all hope to issue through the Internet oneself audio/video program.But audio frequency and video are generally all huger at the volume of when storage file, under network bandwidth condition of limited, often spend the transmission of dozens of minutes even a longer audio-video document of time waiting.The appearance of stream media technology, difficult situation improves to make the internet transmission audio frequency and video to a certain extent.
Stream media technology is exactly to put Website server to continuous image and acoustic information through after the processed compressed; Let the user watch, listen to, and do not wait whole compressed file to download to the network transmission technology that just can watch on the computer of oneself while downloading.This technology is created a buffering area earlier on the computer of user's end; Before broadcast, descend one piece of data as buffering in advance; Actual line speed is when playing the speed consumed at the networking; Playing program will be taken the data in one section buffering area, avoids the interruption of playing, and makes that also playback quality is able to guarantee.
Adopt stream media technology; Can realize stream transmission; With sound, image or animation by server to subscriber computer carry out continuously, the uninterrupted transmission, the user needn't wait until that whole file is all downloaded and finish, and the startup time-delay that only need pass through several seconds or tens seconds can be watched.When playing on the machines the user such as sound video, the remainder of file also can continue to download from server.
At present; Support the agreement of Streaming Media transmission to mainly contain RTP (Real-time Transport Protocol; RTP), RTCP Real-time Transport Control Protocol (Real-time Transport Control Protocol; RTCP) and real-time streaming protocol (Real-Time Streaming Protocol, RTSP) etc.
RTP is a network transmission protocol; Be defined as the host-host protocol of real time datas such as transmission of audio, video, analogue data; Compare with the transition layer protocol of the highly reliable transfer of data of traditional emphasis; The real time of data transmission that it stresses more, the service that this agreement provides comprise data sequence number, time mark, transmission control etc.
RTCP is in charge of transmission quality exchange of control information between the current application process.Between the RTP session, each participant periodically transmits the RTCP bag, contains the quantity of data packets of having sent, the statistics of losing such as quantity of data packets in the bag.Therefore, server can utilize these information dynamically to change transmission rate, even changes PT Payload Type.RTP and RTCP are used, and can make the efficiency of transmission optimization with effective feedback and minimum expense, so be particularly suitable for transmitting online real time data.
RTSP proposes by RealNetworks and Netscape are common, this protocol definition one-to-many application how to transmit multi-medium data through IP network effectively.RTSP is being positioned on the architecture on RTP and the RTCP, and it uses TCP or RTP to accomplish transfer of data.HTTP compares with RTSP, and HTTP transmits HTML, and the RTP transmission is multi-medium data.The HTTP request is sent by client computer, and server responds; When using RTSP, client-server can be sent request, and promptly RTSP can be two-way.
(Content Delivery Network CDN) is a kind of not effective means of good problem of internet performance that solves that in recent years develops rapidly to another kind of content distributing network.Its basic ideas are to avoid might influencing on the Internet bottleneck and the link of data transmission bauds and stability as far as possible, make content delivery sooner, more stable.One deck intelligent virtual network on basis, existing the Internet that is constituted through placing node server everywhere at network, CDN system design goal are according to being connected of network traffics and each node, load state and to integrated informations such as user's distance and response times user's request to be led again on the nearest service node of user.Its objective is to make the user can obtain required content nearby, solve the situation of Internet network congestion, improve the response speed of user capture website.
In addition, " point-to-point " (Point to Point) technology also obtains using comparatively widely, and it is called P2P again; It is a kind of network transmission technology; Participant's computing capability and bandwidth in the dependency network, when downloading, downloaded contents is uploaded in computer this locality.This downloading mode is distributed in data on a plurality of client terminals, has reduced the pressure of central server, and multiple speed is fast more more to be characterized in the people.
Though in the P2P network, server no longer is unique center of data, it is still coordinating the work of whole network, and the paralysis of server will cause the paralysis of whole network, and this is threaten network security greatly.In addition, P2P can not realize the real-time Transmission of media data, can't resolve the real-time Transmission problem of media data.
Above-mentioned diverse network transmission technology and agreement obtain extensive use in existing TV programme are live; In the live telecast process of prior art; At first the video source that produces in the presentation studio is sent to the tv telecasting control platform and carries out the program audit; Be sent to broadcasting system to video frequency program by the tv telecasting control platform then; Broadcasting system can transmit program through dual mode: a kind of is with wireless mode, is sent to relay station to program, by the receiving element transmission program of relay station toward each terminal of televising; Second kind is through the Internet, is sent to dissemination system to program, by the receiving element transmission program of dissemination system toward each netcast terminal.At last, the receiver of playback terminal receives data, and on playback terminal, presents picture and sound.
The above-mentioned second way is an IPTV.In the IPTV process, video source at first gets into the tv telecasting control platform, is sent in the coded system and encodes, and squeeze into station symbol, time mark, and wherein, target time time comes from national time service center.Packet through behind the coding sends to the netcast terminal by broadcasting system, dissemination system.
Yet; In the process of Network Transmission; Because other reasonses such as network jitter, line fault; Cause data transfer delay, cause TV programme to compare with the standard time (standard time is the GMT) and delay to a certain degree can occur, i.e. the playout-delay problem of IPTV generation in the time of netcast terminal plays.
Summary of the invention
Technical problem to be solved by this invention is: a kind of IPTV method based on RTP is provided, and this method can effectively solve the playout-delay problem in the IPTV process.
The further technical problem to be solved of the present invention is: a kind of network television direct broadcasting system based on RTP is provided, and this system can effectively solve the playout-delay problem in the IPTV process.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of IPTV method based on RTP comprises:
Coding step; The video source data that the tv telecasting control platform is received is packaged into the data message of RTP/RTCP/RTSP protocol format; And after one of insertion carries the added field of accurate reproduction time in the data message after each packing; The data message that will insert said added field according to preset transmitting time sends to broadcasting system, and said preset transmitting time is for shift to an earlier date its preset safety time of accurate reproduction time that carries at least;
Broadcast step, broadcasting system sends to the netcast terminal through the internet redistribution system with said data message;
Netcast step, netcast terminal receive after the said data message, and the accurate reproduction time that carries according to its added field is play the programme content of this data message.
Preferably, also include before the said netcast step:
Time calibration, step was calibrated the time setting at netcast terminal through time server.
Preferably, the said added field that carries accurate reproduction time be inserted in before the heading or heading and message data between.
Preferably, the mean value after the addition of the buffer time that network latency that said preset safety time is a data message and said netcast terminal are preset, perhaps, be set to 500 milliseconds-15 seconds.
Preferably, the said time is the standard Greenwich time.
Correspondingly; The invention also discloses a kind of network television direct broadcasting system based on RTP; The video source that is used for the tv telecasting control platform is received is transferred to the netcast terminal plays through broadcasting system, dissemination system; Said tv telecasting control platform includes video source receiving element and coded system, and said coded system specifically includes:
The protocol format converting unit is used for the video source data that the tv telecasting control platform receives is packaged into the data message of RTP/RTCP/RTSP protocol format;
Added field is inserted the unit, inserts an added field that carries accurate reproduction time in the data message after each packing;
Transmitting time is provided with the unit, is used to be provided with the transmitting time of each data message, and said transmitting time is for shift to an earlier date its preset safety time of accurate reproduction time that carries at least;
Said tv telecasting control platform also includes:
The data message transmitting element, each data message of transmitting time transmission that is used for according to said transmitting time the unit setting being set is to said broadcasting system;
Said netcast terminal specifically includes:
The Data Receiving unit is used to receive the data message that said dissemination system sends through the Internet;
The video playback unit, the accurate reproduction time that is used for carrying according to its added field is play the programme content of this data message.
Preferably, said netcast terminal also includes:
Time calibration, the unit was used for through time server the time setting at netcast terminal being calibrated.
Preferably, said transmitting time is provided with the unit and is connected with:
Preset safety time budget unit is used to obtain the network latency of data message, and averages after the buffer time addition with this network latency and the setting of netcast terminal, obtains said preset safety time; Perhaps
The preset unit of preset safety time, be used for directly said preset safety time be set to 500 milliseconds-15 seconds.
Preferably, the said added field that carries accurate reproduction time be inserted in before the heading or heading and message data between.
Preferably, the said time is the standard Greenwich time.
The invention has the beneficial effects as follows:
Embodiments of the invention are through inserting an added field that carries accurate reproduction time in the data message of protocol formats such as RTP/RTCP/RTSP; And carry previous preset safety time and data message is sent to the netcast terminal wait play, thereby solved the playout-delay problem in the IPTV process effectively at said accurate reproduction time.
Below in conjunction with accompanying drawing the present invention is made further detailed description.
Description of drawings
Fig. 1 is the method flow diagram of the embodiment of IPTV method based on RTP of the present invention.
Fig. 2 of the present inventionly is inserted in the data message sketch map before the heading based on added field among embodiment of IPTV method of RTP.
Fig. 3 is the data message sketch map that is inserted in the message centre based on added field among embodiment of IPTV method of RTP of the present invention.
Fig. 4 is the composition structure chart of the embodiment of network television direct broadcasting system based on RTP of the present invention.
Embodiment
A following embodiment who describes the IPTV method based on RTP provided by the invention with reference to figure 1-Fig. 3 in detail; As shown in Figure 1, the present embodiment realization once mainly may further comprise the steps based on the IPTV flow process of RTP:
In coding step S1; The video source data that the tv telecasting control platform is received is packaged into the data message of RTP/RTCP/RTSP protocol format; And after one of insertion carries the added field of accurate reproduction time in the data message after each packing; The data message that will insert said added field according to preset transmitting time sends to broadcasting system, and said preset transmitting time is for shift to an earlier date its preset safety time of accurate reproduction time that carries at least.
As a preferred implementation of present embodiment, as shown in Figure 2, the said added field that carries accurate reproduction time is inserted in before the heading; Perhaps, as shown in Figure 3, the said added field that carries accurate reproduction time is inserted between heading and the message data.
Buffer time N1 second generally can be preset in the netcast terminal of prior art, and in the playing network audio/video file, the video content of downloading one section duration earlier and be N1 second is ready to, and is stored in the local hard drive temporary folder, and it is more smooth that file is play.
During concrete the realization, said preset safety time can be set to the network latency of data message and the mean value after the addition of the buffer time that preset at said netcast terminal.Wherein, said network latency can be buffer time preset in the netcast terminal through the acquisition of data message required time, the said buffer time that distributing network sends through test network playback terminal reception broadcasting system.
Perhaps because in the ordinary course of things, the time of delay of IPTV all between 500 milliseconds to 15 seconds, thereby, generally can said preset safety time be set to 500 milliseconds-15 seconds.
In broadcasting step S2, broadcasting system sends to the netcast terminal through the internet redistribution system with said data message;
In netcast step S3, the netcast terminal receives after the said data message, and the accurate reproduction time that carries according to its added field is play the programme content of this data message.
In addition, also can include before the said netcast step S3:
Time calibration, step S4 calibrated the time setting at netcast terminal through time server (time server), and the time in the present embodiment is all adopted the standard Greenwich time, and the time after the calibration is the standard Greenwich time.
In addition, in said coding step S1, coded system can also be inserted station symbol and other information that needs in the data message after packing; In said netcast step S3, the netcast terminal can present information such as said station symbol and normal play time in broadcasting pictures, repeat no more.
Describe an embodiment of the network television direct broadcasting system based on RTP provided by the invention below in detail with reference to figure 4, the video source that present embodiment is used for the tv telecasting control platform is received is transferred to the netcast terminal plays through broadcasting system, dissemination system; As shown in Figure 4, present embodiment mainly includes tv telecasting control platform 1, broadcasting system 2, dissemination system 3 and netcast terminal 4, and tv telecasting control platform 1 includes video source receiving element 11 and coded system 12, and coded system 12 specifically includes:
Protocol format converting unit 121 is used for the video source data that the tv telecasting control platform receives is packaged into the data message of RTP/RTCP/RTSP protocol format;
Added field is inserted unit 122, inserts an added field that carries accurate reproduction time in the data message after each packing;
Transmitting time is provided with unit 123, is used to be provided with the transmitting time of each data message, and said transmitting time is for shift to an earlier date its preset safety time of accurate reproduction time that carries at least;
In addition, tv telecasting control platform 1 also includes:
Data message transmitting element 13, each data message of transmitting time transmission that is used for according to said transmitting time the unit setting being set is to said broadcasting system;
Said netcast terminal 4 specifically includes:
In addition, said netcast terminal 4 also includes:
Time calibration, the unit 43, were used for through time server (time server) the time setting at netcast terminal 4 being calibrated.
As a preferred implementation of present embodiment, the said added field that carries accurate reproduction time can be inserted in before the heading or between heading and the message data.
In addition, said transmitting time is provided with unit 123 and also is connected with:
Preset safety time budget unit 124 is used to obtain the network latency of data message, and averages after the buffer time addition with this network latency and the setting of netcast terminal, obtains said preset safety time; Perhaps
The preset unit of preset safety time (not shown), be used for said preset safety time be set to 500 milliseconds-15 seconds.
In addition, said coded system 12 also is used in and inserts station symbol and other information that needs in the data message after the packing; Said video playback unit 42 also is used in broadcasting pictures and presents information such as said station symbol and normal play time.
Present embodiment be previous embodiment method fully corresponding system, the various implementations in the previous embodiment all are applicable to present embodiment, part is to the greatest extent given unnecessary details no longer one by one.
Compared with prior art, the invention has the advantages that:
Through in the data message of protocol formats such as RTP/RTCP/RTSP, inserting an added field that carries accurate reproduction time; And carry previous preset safety time and data message is sent to the netcast terminal wait play, thereby solved the playout-delay problem in the IPTV process effectively at said accurate reproduction time.
The above is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also are regarded as protection scope of the present invention.
Claims (10)
1. IPTV method based on RTP is characterized in that this method may further comprise the steps:
Coding step; The video source data that the tv telecasting control platform is received is packaged into the data message of RTP/RTCP/RTSP protocol format; And after one of insertion carries the added field of accurate reproduction time in the data message after each packing; The data message that will insert said added field according to preset transmitting time sends to broadcasting system, and said preset transmitting time is for shift to an earlier date its preset safety time of accurate reproduction time that carries at least;
Broadcast step, broadcasting system sends to the netcast terminal through the internet redistribution system with said data message;
Netcast step, netcast terminal receive after the said data message, and the accurate reproduction time that carries according to its added field is play the programme content of this data message.
2. the IPTV method based on RTP as claimed in claim 1 is characterized in that, also includes before the said netcast step:
Time calibration, step was calibrated the time setting at netcast terminal through time server.
3. the IPTV method based on RTP as claimed in claim 2 is characterized in that:
The said added field that carries accurate reproduction time be inserted in before the heading or heading and message data between.
4. like each described IPTV method among the claim 1-3, it is characterized in that based on RTP:
Mean value after the addition of the buffer time that network latency that said preset safety time is a data message and said netcast terminal are preset, perhaps, be set to 500 milliseconds-15 seconds.
5. the IPTV method based on RTP as claimed in claim 4 is characterized in that:
The said time is the standard Greenwich time.
6. network television direct broadcasting system based on RTP; The video source that is used for the tv telecasting control platform is received is transferred to the netcast terminal plays through broadcasting system, dissemination system; Said tv telecasting control platform includes video source receiving element and coded system, it is characterized in that:
Said coded system specifically includes:
The protocol format converting unit is used for the video source data that the tv telecasting control platform receives is packaged into the data message of RTP/RTCP/RTSP protocol format;
Added field is inserted the unit, inserts an added field that carries accurate reproduction time in the data message after each packing;
Transmitting time is provided with the unit, is used to be provided with the transmitting time of each data message, and said transmitting time is for shift to an earlier date its preset safety time of accurate reproduction time that carries at least;
Said tv telecasting control platform also includes:
The data message transmitting element, each data message of transmitting time transmission that is used for according to said transmitting time the unit setting being set is to said broadcasting system;
Said netcast terminal specifically includes:
The Data Receiving unit is used to receive the data message that said dissemination system sends through the Internet;
The video playback unit, the accurate reproduction time that is used for carrying according to its added field is play the programme content of this data message.
7. the network television direct broadcasting system based on RTP as claimed in claim 6 is characterized in that, said netcast terminal also includes:
Time calibration, the unit was used for through time server the time setting at netcast terminal being calibrated.
8. the network television direct broadcasting system based on RTP as claimed in claim 7 is characterized in that, said transmitting time is provided with the unit and is connected with:
Preset safety time budget unit is used to obtain the network latency of data message, and averages after the buffer time addition with this network latency and the setting of netcast terminal, obtains said preset safety time; Perhaps
The preset unit of preset safety time, be used for directly said preset safety time be set to 500 milliseconds-15 seconds.
9. the network television direct broadcasting system based on RTP as claimed in claim 8 is characterized in that:
The said added field that carries accurate reproduction time be inserted in before the heading or heading and message data between.
10. like each described network television direct broadcasting system among the claim 6-9, it is characterized in that based on RTP:
The said time is the standard Greenwich time.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102970615A (en) * | 2012-11-21 | 2013-03-13 | 联想中望系统服务有限公司 | System for efficient transmission and coding/encoding of high-definition videos |
| CN112020192A (en) * | 2019-05-28 | 2020-12-01 | 成都鼎桥通信技术有限公司 | Control method and device of navigation aid lamp and storage medium |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300517A (en) * | 1999-02-12 | 2001-06-20 | 皇家菲利浦电子有限公司 | Method of and apparatus for isochronous data communication |
| CN1645835A (en) * | 2004-01-19 | 2005-07-27 | 三星电子株式会社 | System and method for providing unified messaging system service using voice over internet protocol |
| US20060233203A1 (en) * | 2005-04-13 | 2006-10-19 | Sony Corporation | Synchronized audio/video decoding for network devices |
| CN1885828A (en) * | 2006-06-20 | 2006-12-27 | 中国移动通信集团公司 | Mobile stream media timing method |
| CN101035262A (en) * | 2007-04-19 | 2007-09-12 | 深圳市融合视讯科技有限公司 | Video information transmission method |
| CN101179737A (en) * | 2006-11-08 | 2008-05-14 | 中兴通讯股份有限公司 | Method of converting compound protocol in multimedia broadcasting network |
| CN101272200A (en) * | 2008-05-13 | 2008-09-24 | 中兴通讯股份有限公司 | Multimedia stream synchronization caching method and system |
| CN101471946A (en) * | 2007-12-25 | 2009-07-01 | 厦门雅迅网络股份有限公司 | Method for implementing fixed point multimedia advertisement play through GPS orientation and GPRS network |
| CN101909063A (en) * | 2010-08-11 | 2010-12-08 | 中国电信股份有限公司 | Method and system for pushing video streaming based on layered coding |
| CN102067595A (en) * | 2009-03-16 | 2011-05-18 | 松下电器产业株式会社 | Audio-visual communication apparatus and communication method of same |
-
2012
- 2012-07-09 CN CN201210235997.XA patent/CN102740131B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300517A (en) * | 1999-02-12 | 2001-06-20 | 皇家菲利浦电子有限公司 | Method of and apparatus for isochronous data communication |
| CN1645835A (en) * | 2004-01-19 | 2005-07-27 | 三星电子株式会社 | System and method for providing unified messaging system service using voice over internet protocol |
| US20060233203A1 (en) * | 2005-04-13 | 2006-10-19 | Sony Corporation | Synchronized audio/video decoding for network devices |
| CN1885828A (en) * | 2006-06-20 | 2006-12-27 | 中国移动通信集团公司 | Mobile stream media timing method |
| CN101179737A (en) * | 2006-11-08 | 2008-05-14 | 中兴通讯股份有限公司 | Method of converting compound protocol in multimedia broadcasting network |
| CN101035262A (en) * | 2007-04-19 | 2007-09-12 | 深圳市融合视讯科技有限公司 | Video information transmission method |
| CN101471946A (en) * | 2007-12-25 | 2009-07-01 | 厦门雅迅网络股份有限公司 | Method for implementing fixed point multimedia advertisement play through GPS orientation and GPRS network |
| CN101272200A (en) * | 2008-05-13 | 2008-09-24 | 中兴通讯股份有限公司 | Multimedia stream synchronization caching method and system |
| CN102067595A (en) * | 2009-03-16 | 2011-05-18 | 松下电器产业株式会社 | Audio-visual communication apparatus and communication method of same |
| CN101909063A (en) * | 2010-08-11 | 2010-12-08 | 中国电信股份有限公司 | Method and system for pushing video streaming based on layered coding |
Non-Patent Citations (1)
| Title |
|---|
| 高科: "互联网中实时流媒体播放技术的研究", 《中国优秀硕士学位论文数据库 信息科技辑》, no. 07, 15 November 2005 (2005-11-15) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102970615A (en) * | 2012-11-21 | 2013-03-13 | 联想中望系统服务有限公司 | System for efficient transmission and coding/encoding of high-definition videos |
| CN112020192A (en) * | 2019-05-28 | 2020-12-01 | 成都鼎桥通信技术有限公司 | Control method and device of navigation aid lamp and storage medium |
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|---|---|
| CN102740131B (en) | 2015-12-02 |
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