WO2014026544A1 - 一种点播节目方法及装置 - Google Patents

一种点播节目方法及装置 Download PDF

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Publication number
WO2014026544A1
WO2014026544A1 PCT/CN2013/080463 CN2013080463W WO2014026544A1 WO 2014026544 A1 WO2014026544 A1 WO 2014026544A1 CN 2013080463 W CN2013080463 W CN 2013080463W WO 2014026544 A1 WO2014026544 A1 WO 2014026544A1
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WO
WIPO (PCT)
Prior art keywords
program
demand
list
module
top box
Prior art date
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PCT/CN2013/080463
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English (en)
French (fr)
Inventor
肖蓉
刘澍
张海
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US14/421,322 priority Critical patent/US20150215675A1/en
Priority to EP20130829648 priority patent/EP2871849A1/en
Publication of WO2014026544A1 publication Critical patent/WO2014026544A1/zh

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Classifications

    • 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
    • H04N21/47—End-user applications
    • H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H04N21/47202—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
    • H04N21/26258—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists for generating a list of items to be played back in a given order, e.g. playlist, or scheduling item distribution according to such list
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
    • H04N21/26283—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists for associating distribution time parameters to content, e.g. to generate electronic program guide data
    • 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
    • H04N21/47—End-user applications
    • H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H04N21/47217—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for controlling playback functions for recorded or on-demand content, e.g. using progress bars, mode or play-point indicators or bookmarks
    • 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
    • H04N21/47—End-user applications
    • H04N21/482—End-user interface for program selection
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6125—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via Internet
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/637—Control signals issued by the client directed to the server or network components
    • H04N21/6377—Control signals issued by the client directed to the server or network components directed to server
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/643—Communication protocols
    • H04N21/64322—IP
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/643—Communication protocols
    • H04N21/6437—Real-time Transport Protocol [RTP]

Definitions

  • the present invention relates to the field of on-demand program technology, and more particularly to an on-demand program and apparatus for an IPTV system carousel channel.
  • Interactive Internet TV is a broadband cable TV network that integrates various technologies such as Internet, multimedia, and communication to provide users with a variety of interactive services including digital TV. New technology. It can adapt well to the rapid development of today's networks and make full use of multiple network resources.
  • the VOD (Vedio On Demand) service is a main service of IPTV.
  • the operator displays the programs that are pre-released on the streaming media server on the EPG (Electronic Program Guide), and the user browses through the EPG. And selecting a program to be viewed, obtaining information of the program through the EPG, and transmitting the requested program information to the streaming server through signaling, and providing the media service to the user by the streaming server.
  • EPG Electronic Program Guide
  • the technical problem to be solved by the embodiments of the present invention is to provide a method and device for on-demand programming, which can achieve the purpose of on-demand customization and provide a user experience.
  • a method of on-demand programming including:
  • the set top box adds the selected program of the user to the customized column to generate a list of on-demand programs
  • an on-demand play request is initiated to the streaming server, and the on-demand play request carries the on-demand program list.
  • the on-demand play request is a real-time streaming protocol message
  • the step of the on-demand play request carrying the list of on-demand programs includes:
  • a message body extension field is added to the description signaling of the real-time streaming protocol message, and the message body includes the list of on-demand programs.
  • a set top box includes an electronic program menu module and a processing module, wherein:
  • the electronic program menu module is configured to: add a program selected by the user to the customization column to generate a list of the on-demand programs;
  • the processing module is configured to: after receiving the instruction of the user, initiate an on-demand play request to the streaming media server, and carry the on-demand program list in the on-demand play request.
  • the on-demand play request is a real-time streaming protocol message
  • the processing module is configured to carry the on-demand program list in the on-demand play request as follows: a message body extension field is added to the description signaling of the real-time streaming protocol message, and the message body includes the on-demand program list.
  • a method of on-demand programming including:
  • the streaming media server After receiving the on-demand play request carrying the on-demand program list, the streaming media server stores the list of the on-demand programs;
  • the programs are played to the corresponding set top box in the order of the program list.
  • the method further includes:
  • the streaming server when playing to the end position of the last program in the list of on-demand programs, sends an on-demand program end message to the set top box.
  • the method further includes:
  • the streaming media server receives the fast forward command, fast forward processing is performed on the program in the on-demand program list, and when fast-forwarding to the end position of the last program in the on-demand program list, the on-demand box is sent to the set-top box. End of program message, or
  • the program in the on-demand program list is Line rewind processing, when rewinding to the start position of the first program in the on-demand program list, sending an on-demand program start message to the set top box.
  • the method further includes:
  • the streaming server receives the fixed-point play request, the program is switched to a specified time point of the specified program of the fixed-point play request.
  • a streaming media server includes a first module and a second module, wherein:
  • the first module is configured to: after receiving an on-demand play request carrying an on-demand program list, storing the on-demand program list;
  • the second module is configured to: play a section to the corresponding set top box in the order of the program list.
  • the second module is further configured to: when playing to an end position of the last program in the on-demand program list, send an on-demand program end message to the set top box.
  • the second module is further configured to:
  • fast forward processing is performed on the program in the on-demand program list, and when fast-forwarding to the end position of the last program in the on-demand program list, the on-demand program end message is sent to the set top box;
  • the second module is further configured to:
  • the program is switched to a specified time point of the fixed point play request specifying the program.
  • the user can select a plurality of VOD programs to be viewed on the EPG, and make a program list, and the streaming media server automatically plays the programs in the list according to the program list, so as to achieve the purpose of on-demand customization.
  • the streaming media server automatically plays the programs in the list according to the program list, so as to achieve the purpose of on-demand customization.
  • FIG. 1 is a flowchart of a method for ordering a program according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a set top box according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a streaming media server according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of an IPTV system according to an embodiment of the present invention. Preferred embodiment of the invention
  • FIG. 1 is a flowchart of a method for ordering a program according to an embodiment of the present invention. As shown in FIG. 1, the method in this embodiment includes:
  • the set-top box adds the program selected by the user to the customized column, and generates an on-demand program list; S12. After receiving the instruction of the user, the set-top box initiates an on-demand play request to the streaming media server, where the on-demand play request carries the list of the on-demand program;
  • the streaming media server After receiving the on-demand play request that carries the on-demand program list, the streaming media server stores the on-demand program list.
  • the streaming media server plays the program to the corresponding set top box according to the sequence of the program list.
  • the VOD program customization section can be deployed on the EPG by the method of the embodiment, and the set top box
  • STB Set Top Box Users can customize their playlist by browsing the EPG, selecting VOD programs and adding columns. Then, the STB brings the customized VOD program list to the streaming media server through the extended field of the Real Time Streaming Protocol (RTSP) on-demand signaling, and the streaming media server stores the program list, and then automatically plays according to the list order. The program in the list.
  • RTSP Real Time Streaming Protocol
  • This embodiment may add a MessageBody extension field to the Describe (Description) signaling of the RTSP, which is actually a Compliance with Session Description Protocol (SDP) syntax.
  • the x-playlist attribute is defined as follows:
  • contentID indicates the identity of the content asset
  • Type identifies the type of content, which can be ad (identified ad content), vod (normal on-demand program), npvr (time-shifted program). This parameter is optional.
  • Bitrate is the code rate of the media file, in bps. This parameter is optional.
  • Range indicates the playback range in the format [ ⁇ start-npt>]-[ ⁇ stop-npt>].
  • Start-npt identifies the starting position of the content file playback
  • stop-npt identifies the end position of the content file playback.
  • Npt is in seconds.
  • the streaming service server For the contentID content file listed in the x-playlist, the streaming service server needs to play according to the range range.
  • This embodiment can be compatible with two modes of one content and multiple contents, that is, a normal play mode and a list play mode.
  • the streaming server system In normal play mode, when the normal start or reverse play to the start-npt or stop-npt point of the file, the streaming server system must issue an AN OU CE (announcement) command to the set-top box to identify the EOS (End of Stream). The end position of the playback) or BOS (Begin of Stream, the starting position of the video playback). This mode is equivalent to a normal VOD on demand.
  • the streaming media server plays them in the order listed in the SDP.
  • the list play mode when normal or reverse playback to the start-npt or stop-npt point of a file, the streaming server must automatically play the previous program or the next program according to the contents of all the lists; only when the list is reached
  • the BNO the beginning of the video playback
  • EOS End of Stream
  • the streaming server receives the fixed-point playback request, all the programs are arranged in order, and they are regarded as a continuous whole time.
  • the current program starts playing time and the current time can be Calculate the program and time point corresponding to the time period requested by the user, and provide services to the user by switching to the corresponding program and playing at a fixed point (specified time point).
  • the set top box of this embodiment includes an EPG module 201 and a processing module 202, where:
  • the EPG module 201 is configured to: add a program selected by the user to the customization column to generate a list of on-demand programs;
  • the processing module 202 is configured to: after receiving the user's instruction, initiate an on-demand play request to the streaming server, where the on-demand play request carries the on-demand program list.
  • the on-demand playback request is a real-time streaming protocol message.
  • the processing module 202 is configured to initiate an on-demand playback request to the streaming server in the following manner: A message body extension field is added to the description signaling of the real-time streaming protocol message, and the message body includes the list of on-demand programs.
  • FIG. 3 is a schematic diagram of a streaming media server according to an embodiment of the present invention.
  • the streaming media server of this embodiment includes a first module 301 and a second module 302, where:
  • the first module 301 is configured to: after receiving the on-demand play request carrying the on-demand program list, save Storing the list of on-demand programs;
  • the second module 302 is configured to: play the section to the corresponding set top box in the order of the program list.
  • the second module 302 is further configured to: when playing to the end position of the last program in the on-demand program list, send an on-demand program end message to the set top box.
  • the second module 302 may be further configured to: if receiving the fast forward command, perform fast forward processing on the program in the on-demand program list, when fast forwarding to the end position of the last program in the on-demand program list Sending an on-demand program end message to the set top box, or if the fast rewind command is received, rewinding the program in the on-demand program list, when rewinding to the first program in the on-demand program list At the start position, an on-demand program start message is sent to the set top box.
  • the second module 302 may be further configured to: if receiving the fixed-point play request, switch the program to a specified time point of the specified program of the fixed-point play request.
  • FIG. 4 is a schematic diagram of an IPTV system according to an embodiment of the present invention. As shown in FIG. 4, the system includes an STB401, an EPG 402, an IPTV service system 403, and a streaming media server 404, where:
  • the STB401 is configured to: interact with the EPG and the streaming server to obtain the service.
  • the EPG 402 is configured to: display and provide services such as content and channels that can be provided by the system.
  • a VOD customization column is added to customize the VOD list service.
  • the IPTV service system 403 is configured to: manage services such as content and channels on the streaming media server.
  • the streaming server 404 includes a protocol processing module 4041, a service processing module 4042, a streaming media module 4043, and a data management module 4044, where:
  • the protocol processing module 4041 receives and processes the request sent by the user to provide services to the user.
  • the service processing module 4042 is configured to: receive and process the service request sent by the IPTV service system, and implement content management on the streaming media server.
  • the streaming module 4043 is configured to: receive media service requests from the user management module and the channel management module to implement media control, analysis, storage, and transmission.
  • the data management module 4044 is configured to: manage and store various data.
  • the combination of the service processing module 4042 and the data management module 4043 is equivalent to the first module above.
  • Step 101 The IPTV service system sends a content distribution request to the streaming media server; the service processing module of the streaming media server notifies the streaming media module to pull the content down to After the streaming module is successfully pulled down, the information of the program duration is reported to the service processing module, and the service processing module saves the information such as the program ID and the duration of the program in the data management module, and successfully issues the information to the IPTV service system.
  • Step 102 The IPTV service system synchronizes the successfully released content to the EPG, and the EPG displays the content.
  • Step 103 The STB user browses the content through the EPG, adds the selected content to the customization column, and then the STB initiates a VOD play request to the streaming media server, and sends the program list specification in the customization column to the protocol processing module of the streaming media server in the request.
  • Step 104 The protocol processing module receives the VOD list play request, saves the program list information in the list to the data management module, and notifies the streaming media module to start playing the program in sequence, and the protocol processing module also needs to record the time requested by the user.
  • Step 105 The streaming media module plays the program, and sends the media stream to the STB user.
  • the streaming module reports the EOS end message to the protocol processing module, and the protocol processing module searches the database management module for the next program in the playlist, and notifies the streaming module to play the next program.
  • the protocol processing module records the current program and the time at which the current program starts playing. If the current program is the last one in the list, the protocol processing module sends an ANNOUNCE command to the STB user indicating that it has been played to the end.
  • the protocol processing module acquires the duration of all the programs in the playlist from the data management module, arranges all the programs in order, and regards them as a continuous time. Overall. Based on the previously recorded current program and the time at which the current program starts playing, compared with the current time, the currently played program position can be obtained. Then, according to the time point of the STB user's request, the corresponding program and time point can be located, and the corresponding program can be switched to the fixed point. For example, a program is a highlight from the first few minutes, and the user is scheduled to play at that point in time.
  • the protocol processing module locates the beginning of the first program of the entire playlist for playback.
  • the protocol processing module locates the end of the last program of the entire playlist.
  • the user can select a plurality of VOD programs to be viewed on the EPG, and make a program list, and the streaming media server automatically plays the programs in the list according to the program list, so as to achieve the purpose of on-demand customization.
  • the present invention has strong industrial applicability.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Human Computer Interaction (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

一种点播节目方法及装置，该方法包括：机顶盒将用户选中的节目加入定制栏，生成点播节目列表；接收到用户的指令后，向流媒体服务器发起点播播放请求，所述点播播放请求携带所述点播节目列表。根据上述技术方案，用户可以在EPG上选择多个想观看的VOD节目，制作成节目列表，流媒体服务器根据节目列表自动播放列表中的节目，以达到点播可定制的目的，提供用户体验。

Description

一种点播节目方法及装置
技术领域
本发明涉及点播节目技术领域， 尤其涉及 IPTV系统轮播频道的点播节 目方法及装置。
背景技术
交互式网络电视 (IPT V , Interactive Personality TV) ,是一种利用宽带有线 电视网， 其集成互联网、 多媒体、 通讯等多种技术于一体， 向用户提供包括 数字电视在内的多种交互式服务的崭新技术。 它能够很好地适应当今网络飞 速发展的趋势， 充分有效地利用多种网络资源。
点播（ VOD, Vedio On Demand )业务是 IPTV的一种主要业务， 通常由 运营商将预先在流媒体服务器上发布好的节目展示在电子节目菜单（EPG, Electronic Program Guide )上， 用户通过 EPG浏览和选择需要观看的节目， 通过 EPG获得节目的信息， 再通过信令将请求节目信息发送给流媒体服务 器， 由流媒体服务器为用户提供媒体服务。
但目前点播系统用户通常只能一次选择一个节目， 当节目收看结束， 需 要用户重新选择。 互动性较低， 用户体验较差。 发明内容
本发明实施例要解决的技术问题是提供一种点播节目方法及装置， 以实 现点播可定制的目的， 提供用户体验。
为了解决上述技术问题， 釆用如下技术方案：
一种点播节目的方法， 包括：
机顶盒将用户选中的节目加入定制栏， 生成点播节目列表；
接收到用户的指令后， 向流媒体服务器发起点播播放请求， 所述点播播 放请求携带所述点播节目列表。 可选地， 所述点播播放请求为实时流传输协议消息；
所述点播播放请求携带所述点播节目列表的步骤包括：
在实时流传输协议消息的描述信令中加入消息体扩展字段， 所述消息体 包括所述点播节目列表。
一种机顶盒， 包括电子节目菜单模块和处理模块， 其中：
所述电子节目菜单模块设置成： 将用户选中的节目加入定制栏， 生成点 播节目列表；
所述处理模块设置成： 接收到用户的指令后， 向流媒体服务器发起点播 播放请求， 在所述点播播放请求携带所述点播节目列表。
可选地， 所述点播播放请求为实时流传输协议消息，
所述处理模块设置成按照如下方式在所述点播播放请求携带所述点播节 目列表： 在实时流传输协议消息的描述信令中加入消息体扩展字段， 所述消 息体包括所述点播节目列表。
一种点播节目的方法， 包括：
流媒体服务器接收到携带点播节目列表的点播播放请求后， 存储所述点 播节目列表；
按照所述节目列表的顺序向对应的机顶盒播放节目。
可选地， 该方法还包括：
所述流媒体服务器如播放到所述点播节目列表中最后一个节目的结束位 置时， 向所述机顶盒发送点播节目结束消息。
可选地， 该方法还包括：
所述流媒体服务器如接收到快进命令， 则对所述点播节目列表中节目进 行快进处理， 当快进到所述点播节目列表中最后一个节目的结束位置时， 向 所述机顶盒发送点播节目结束消息， 或
所述流媒体服务器如接收到快退命令， 则对所述点播节目列表中节目进 行快退处理， 当快退到所述点播节目列表中第一个节目的起始位置时， 向所 述机顶盒发送点播节目开始消息。
可选地， 该方法还包括：
所述流媒体服务器如接收到定点播放请求， 则将节目切换到所述定点播 放请求的指定节目的指定时间点。
一种流媒体服务器， 包括第一模块和第二模块， 其中：
所述第一模块设置成： 接收到携带点播节目列表的点播播放请求后， 存 储所述点播节目列表；
所述第二模块设置成： 按照所述节目列表的顺序向对应的机顶盒播放节 。
可选地， 所述第二模块还设置成： 如播放到所述点播节目列表中最后一 个节目的结束位置时， 向所述机顶盒发送点播节目结束消息。
可选地， 所述第二模块还设置成：
如接收到快进命令， 则对所述点播节目列表中节目进行快进处理， 当快 进到所述点播节目列表中最后一个节目的结束位置时， 向所述机顶盒发送点 播节目结束消息；
如接收到快退命令， 则对所述点播节目列表中节目进行快退处理， 当快 退到所述点播节目列表中第一个节目的起始位置时， 向所述机顶盒发送点播 节目开始消息。
可选地， 所述第二模块还设置成：
如接收到定点播放请求， 则将节目切换到所述定点播放请求指定节目的 指定时间点。
上述技术方案的点播节目方法及装置，用户可以在 EPG上选择多个想观 看的 VOD节目， 制作成节目列表， 流媒体服务器根据节目列表自动播放列 表中的节目， 以达到点播可定制的目的， 提供用户体验。 附图概述
图 1为本发明实施例的点播节目的方法的流程图；
图 2为本发明实施例的机顶盒的示意图；
图 3为本发明实施例的流媒体服务器的示意图；
图 4为本发明实施例的 IPTV系统的示意图。 本发明的较佳实施方式
为使本发明的目的、 技术方案和优点更加清楚明白， 下文中将结合附图 对本发明的实施例进行详细说明。 需要说明的是， 在不冲突的情况下， 本申 请中的实施例及实施例中的特征可以相互任意组合。
图 1为本发明实施例的点播节目的方法的流程图， 如图 1所示， 本实施 例的方法包括：
Sl l、 机顶盒将用户选中的节目加入定制栏， 生成点播节目列表； S12、 机顶盒接收到用户的指令后， 向流媒体服务器发起点播播放请求， 所述点播播放请求携带所述点播节目列表；
513、 流媒体服务器接收到携带点播节目列表的点播播放请求后， 存储 所述点播节目列表；
514、 流媒体服务器按照所述节目列表的顺序向对应的机顶盒播放节目。 通过本实施例的方法可以在 EPG上部署 VOD 节目定制栏目， 机顶盒
( STB, Set Top Box )用户可以通过浏览 EPG, 选择 VOD节目并加入栏目 来定制自己的播放列表。 然后 STB通过实时流传输协议（RTSP, Real Time Streaming Protocol )点播信令的扩展字段，将用户定制好的 VOD节目列表带 给流媒体服务器， 流媒体服务器存储该节目列表， 然后按照列表顺序自动播 放列表中的节目。
本实施例可以在 RTSP 的 Describe (描述） 信令中加入消息体 ( ContentBody )扩展字段， 实际上是一个遵守会话描述协议（ SDP )语法的 消息体。通过 Content-Body给流服务系统携带一个或者多个 a=x-playlist属性 行， 用来指示需要播放的一个或者多个内容及其相关属性。
x-playlist属性定义如下：
a=x-playlist:<contentID><type>[bitrate][<range>]
语义要求：
a= ""是描述媒体属性的 SDP语法， 遵循 RFC2327。
contentID表示内容资产的标识
type标识了内容的类型， 可分别取值为 ad (标识广告内容)、 vod (普通点 播节目）、 npvr (时移节目）。 此参数为可选。
Bitrate为媒体文件的码率， 以 bps为单位。 此参数为可选。
range表示播放范围, 格式为 [<start-npt>]-[<stop-npt>]。 start-npt标识了 该内容文件播放的起始位置， stop-npt 标识了该内容文件播放的结束位置。 npt以秒为单位。
对于 x-playlist 所列出的 contentID 内容文件， 流服务服务器需要按照 range范围进行播放。
本实施例可以兼容一个内容和多个内容两种模式， 即普通播放模式和列 表播放模式。
( 1 )普通播放模式：
当此 SDP消息体中只有一个 x-playlist内容情况下， 称之为普通播放模 式。
普通播放模式下， 当正常或反向播放到该文件的 start-npt或 stop-npt点 时，流服务器系统必须向机顶盒发出 AN OU CE(宣告）命令，标识 EOS(End of Stream, 达到了视频播放的结束位置)或 BOS(Begin of Stream, 达到了视频 播放的起始位置)。 此模式等同于一般的 VOD点播。
( 2 ) 列表播放模式：
当此 SDP消息体中有多个 x-playlist内容情况下， 称之为列表播放模式， 由流媒体服务器按照其在 SDP中列出的顺序先后播放。 列表播放模式下， 当正常或反向播放到某文件的 start-npt或 stop-npt点 时， 流媒体服务器必须按照所有列表内容， 自动播放前面一个节目或后面一 个节目； 只有当达到了列表中第一个节目的 B0S(Begin of Stream, 视频播放 的起始位置)或列表中最后一个节目的 E0S(End of Stream, 视频播放的结束 位置)时， 才需要向机顶盒发出 ANNOUNCE命令。
此模式下， 当用户请求快进 /快退服务时， 从当前节目播放位置开始快进 /快退， 当快进 /快退到一个节目的 E0S/B0S 时， 查找播放列表中的下一个 / 上一个节目， 然后从下一个 /上一个节目的 B0S/E0S开始继续按同样的倍速 快进 /快退。 只有当到达第一个节目的 B0S或者最后一个节目的 EOS, 才向 机顶盒发出 ANNOUNCE命令。
当用户需要定点播放时， 流媒体服务器接收到定点播放请求时， 将所有 节目按顺序排列，将它们看成一个时间上连续的整体，根据当前播放的节目、 当前节目开始播放时间和当前时间可以计算出用户请求的时间段所对应的节 目及时间点， 通过切换到对应节目并定点 （指定时间点）播放， 为用户提供 服务。
图 2为本发明实施例的机顶盒的示意图， 如图 2所示， 本实施例的机顶 盒包括 EPG模块 201和处理模块 202, 其中：
EPG模块 201设置成： 将用户选中的节目加入定制栏， 生成点播节目列 表；
处理模块 202设置成： 接收到用户的指令后， 向流媒体服务器发起点播 播放请求， 所述点播播放请求携带所述点播节目列表。
其中， 所述点播播放请求为实时流传输协议消息，
所述处理模块 202设置成按照如下方式向流媒体服务器发起点播播放请 求： 在实时流传输协议消息的描述信令中加入消息体扩展字段， 所述消息体 包括所述点播节目列表。
图 3为本发明实施例的流媒体服务器的示意图， 如图 3所示， 本实施例 的流媒体服务器包括第一模块 301和第二模块 302, 其中：
第一模块 301设置成： 接收到携带点播节目列表的点播播放请求后， 存 储所述点播节目列表；
第二模块 302设置成： 按照所述节目列表的顺序向对应的机顶盒播放节 。
其中， 所述第二模块 302还设置成： 如播放到所述点播节目列表中最后 一个节目的结束位置时， 向所述机顶盒发送点播节目结束消息。
其中， 所述第二模块 302还可以设置成： 如接收到快进命令， 则对所述 点播节目列表中节目进行快进处理， 当快进到所述点播节目列表中最后一个 节目的结束位置时， 向所述机顶盒发送点播节目结束消息， 或如接收到快退 命令， 则对所述点播节目列表中节目进行快退处理， 当快退到所述点播节目 列表中第一个节目的起始位置时， 向所述机顶盒发送点播节目开始消息。
其中， 所述第二模块 302还可以设置成： 如接收到定点播放请求， 则将 节目切换到所述定点播放请求的指定节目的指定时间点。
图 4为本发明实施例的 IPTV系统的示意图，如图 4所示，包括 STB401、 EPG402、 IPTV业务系统 403和流媒体服务器 404, 其中：
STB401设置成： 与 EPG及流媒体服务器交互以获取服务。
EPG402设置成： 负责展示和提供系统可提供的内容、 频道等业务， 在 本发明实施例中， 增加 VOD定制栏目， 用于用户定制 VOD列表服务。
IPTV业务系统 403设置成： 管理流媒体服务器上的内容和频道等业务。 流媒体服务器 404包括协议处理模块 4041、业务处理模块 4042、流媒体 模块 4043和数据管理模块 4044, 其中：
协议处理模块 4041接收和处理用户发送的请求， 为用户提供服务。 业务处理模块 4042设置成：接收和处理 IPTV业务系统发送的业务请求， 在流媒体服务器上实现内容的管理。
流媒体模块 (相当于上文的第二模块 302 ) 4043设置成： 接收来自用户 管理模块和频道管理模块的媒体服务请求， 实现媒体的控制、 分析、 存储和 传输。
数据管理模块 4044设置成： 管理和存储各种数据。 业务处理模块 4042和数据管理模块 4043的组合相当于上文的第一模块
301。
基于以上的系统组成， 本实施例中实现 VOD定制及播放的方法如下： 步骤 101、 IPTV业务系统向流媒体服务器发送内容发布的请求； 流媒体 服务器的业务处理模块通知流媒体模块将内容下拉到本节点， 流媒体模块下 拉成功后，将节目时长等信息上报给业务处理模块，业务处理模块将节目 ID、 节目时长等信息保存在数据管理模块， 并向 IPTV业务系统上 发布成功。
步骤 102、 IPTV业务系统将发布成功的内容同步到 EPG, EPG将内容展 示出来。
步骤 103、 STB用户通过 EPG浏览内容， 将选中的内容加入定制栏， 然 后 STB向流媒体服务器发起 VOD播放请求， 在请求中将定制栏中的节目列 表规定发送给流媒体服务器的协议处理模块。
步骤 104、协议处理模块接收到 VOD列表播放请求，将列表中节目列表 信息保存到数据管理模块， 并按照顺序通知流媒体模块开始播放节目， 协议 处理模块还需要记录用户请求的时间。
步骤 105、 流媒体模块播放节目， 将媒体流发送至 STB用户。
当一个节目播放完毕时， 流媒体模块向协议处理模块上报 EOS 结束消 息， 协议处理模块向数据库管理模块查找播放列表中下一个节目， 通知流媒 体模块播放下一个节目。 每次切换节目， 协议处理模块记录下当前节目和当 前节目开始播放的时间。 如果当前节目是列表中最后一个， 协议处理模块向 STB用户发送 ANNOUNCE命令表示已经播放到尾。
当 STB用户请求快进 /快退服务时，从当前节目播放位置开始快进 /快退， 当快进 /快退到一个节目的 EOS/BOS时， 查找播放列表中的下一个 /上一个节 只有当到达第一个节目的 BOS或者最后一个节目的 EOS, 才向机顶盒发出 ANNOUNCE命令。
当 STB用户请求定点播放时，协议处理模块向数据管理模块获取播放列 表中所有节目的时长， 将所有节目按顺序排列， 将它们看成一个时间上连续 的整体。 根据之前记录的当前节目和当前节目开始播放的时间， 与当前时间 比较， 就能得出当前播放到的节目位置。 然后就可以根据 STB用户的请求定 位到的时间点， 定位到对应的节目和时间点， 切换到对应节目并定点播放。 比如某节目从第几分钟起是精彩片段， 用户就定点到该时间点定点播放。
当 STB用户请求一键到头时，协议处理模块定位到整个播放列表的第一 个节目的开头进行播放。
当 STB用户请求一键到尾时，协议处理模块定位到整个播放列表的最后 一个节目的结尾。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成， 所述程序可以存储于计算机可读存储介质中， 如只读 存储器、 磁盘或光盘等。 可选地， 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地， 上述实施例中的各模块 /单元可以釆用 硬件的形式实现， 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。
以上仅为本发明的优选实施例， 当然， 本发明还可有其他多种实施例， 在不背离本发明精神及其实质的情况下， 熟悉本领域的技术人员当可根据本 发明作出各种相应的改变和变形， 但这些相应的改变和变形都应属于本发明 所附的权利要求的保护范围。
工业实用性
上述技术方案的点播节目方法及装置，用户可以在 EPG上选择多个想观 看的 VOD节目， 制作成节目列表， 流媒体服务器根据节目列表自动播放列 表中的节目， 以达到点播可定制的目的， 提供用户体验。 因此本发明具有很 强的工业实用性。

Claims

权 利 要 求 书
1、 一种点播节目的方法， 包括：
机顶盒将用户选中的节目加入定制栏， 生成点播节目列表；
接收到用户的指令后， 向流媒体服务器发起点播播放请求， 所述点播播 放请求携带所述点播节目列表。
2、 如权利要求 1所述的方法， 其中：
所述点播播放请求为实时流传输协议消息；
所述点播播放请求携带所述点播节目列表的步骤包括：
在实时流传输协议消息的描述信令中加入消息体扩展字段， 所述消息体 包括所述点播节目列表。
3、 一种机顶盒， 包括电子节目菜单模块和处理模块， 其中：
所述电子节目菜单模块设置成： 将用户选中的节目加入定制栏， 生成点 播节目列表；
所述处理模块设置成： 接收到用户的指令后， 向流媒体服务器发起点播 播放请求， 在所述点播播放请求携带所述点播节目列表。
4、如权利要求 3所述的机顶盒， 其中： 所述点播播放请求为实时流传输 协议消息，
所述处理模块设置成按照如下方式在所述点播播放请求携带所述点播节 目列表： 在实时流传输协议消息的描述信令中加入消息体扩展字段， 所述消 息体包括所述点播节目列表。
5、 一种点播节目的方法， 包括：
流媒体服务器接收到携带点播节目列表的点播播放请求后， 存储所述点 播节目列表；
按照所述节目列表的顺序向对应的机顶盒播放节目。
6、 如权利要求 5所述的方法， 该方法还包括：
所述流媒体服务器如播放到所述点播节目列表中最后一个节目的结束位 置时， 向所述机顶盒发送点播节目结束消息。
7、 如权利要求 5所述的方法， 该方法还包括：
所述流媒体服务器如接收到快进命令， 则对所述点播节目列表中节目进 行快进处理， 当快进到所述点播节目列表中最后一个节目的结束位置时， 向 所述机顶盒发送点播节目结束消息， 或
所述流媒体服务器如接收到快退命令， 则对所述点播节目列表中节目进 行快退处理， 当快退到所述点播节目列表中第一个节目的起始位置时， 向所 述机顶盒发送点播节目开始消息。
8、 如权利要求 5所述的方法， 该方法还包括：
所述流媒体服务器如接收到定点播放请求， 则将节目切换到所述定点播 放请求的指定节目的指定时间点。
9、 一种流媒体服务器， 包括第一模块和第二模块， 其中：
所述第一模块设置成： 接收到携带点播节目列表的点播播放请求后， 存 储所述点播节目列表；
所述第二模块设置成： 按照所述节目列表的顺序向对应的机顶盒播放节 目。
10、 如权利要求 9所述的流媒体服务器， 其中：
所述第二模块还设置成： 如播放到所述点播节目列表中最后一个节目的 结束位置时， 向所述机顶盒发送点播节目结束消息。
11、如权利要求 9所述的流媒体服务器， 其中： 所述第二模块还设置成： 如接收到快进命令， 则对所述点播节目列表中节目进行快进处理， 当快 进到所述点播节目列表中最后一个节目的结束位置时， 向所述机顶盒发送点 播节目结束消息；
如接收到快退命令， 则对所述点播节目列表中节目进行快退处理， 当快 退到所述点播节目列表中第一个节目的起始位置时， 向所述机顶盒发送点播 节目开始消息。
12、如权利要求 9所述的流媒体服务器， 其中： 所述第二模块还设置成： 如接收到定点播放请求， 则将节目切换到所述定点播放请求指定节目的 指定时间点。
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