WO2010057391A1 - 一种流媒体播放控制方法、设备及系统 - Google Patents

一种流媒体播放控制方法、设备及系统 Download PDF

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Publication number
WO2010057391A1
WO2010057391A1 PCT/CN2009/073529 CN2009073529W WO2010057391A1 WO 2010057391 A1 WO2010057391 A1 WO 2010057391A1 CN 2009073529 W CN2009073529 W CN 2009073529W WO 2010057391 A1 WO2010057391 A1 WO 2010057391A1
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WO
WIPO (PCT)
Prior art keywords
streaming media
play
media file
time parameter
message
Prior art date
Application number
PCT/CN2009/073529
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English (en)
French (fr)
Inventor
王文答
李林飞
张玉鹏
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP09827140.6A priority Critical patent/EP2341754B1/en
Publication of WO2010057391A1 publication Critical patent/WO2010057391A1/zh
Priority to US13/114,511 priority patent/US8386632B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60Network streaming of media packets
    • H04L65/61Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H04L65/613Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for the control of the source by the destination
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2387Stream processing in response to a playback request from an end-user, e.g. for trick-play
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60Network 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 
    • H04N21/65Transmission of management data between client and server
    • H04N21/658Transmission by the client directed to the server
    • H04N21/6587Control parameters, e.g. trick play commands, viewpoint selection

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a streaming media playback control method, device, and system.
  • the playlist refers to adding the audio and video file information to be played to the list in turn, and playing the streaming media server to play according to the order in which the files in the playlist appear.
  • Standard Time Streaming Protocol between Terminal and Streaming Media Server Real Time Streaming
  • RTSP Real-Time Playlist Protocol
  • CMS publishes a streaming media file, and the streaming media file is synchronized to the streaming media server; the streaming media server and the CMS interact to generate an RTSP for the terminal to initiate on-demand delivery to the streaming media server.
  • RTPS Universal Resource Identifier
  • CMS then synchronizes the metadata of the streaming file (including URI, depiction, price information, etc.) to the electronic program guide (Electronic)
  • EPG Program, EPG Server
  • the terminal accesses the EPG, obtains the URI, and initiates access to the streaming server through the URI.
  • the RTSP interaction process is designed to control the playback of a single streaming media file, so in streaming media files During playback, all files in the entire playlist can only be played as one media file for playback control. If you want to locate a file in the playlist, you need to drag the progress bar of the player, or perform multiple forward and backward operations, just like controlling a single file.
  • the embodiment of the present invention provides a streaming media playback control method, device, and system, so as to enable playback of a current streaming media belonging to a playlist during playback of a streaming media file.
  • Other streaming media files in .
  • a streaming media playback control method provided by an embodiment of the present invention includes:
  • a streaming media playback control device provided by an embodiment of the present invention includes:
  • a receiving module configured to receive a pause message and a play message from the terminal device requesting to pause playing the current streaming media file, where the play message carries a second play time parameter for positioning a play location of the streaming media file;
  • a pause control module configured to: when the receiving module receives the pause message, suspend sending the media stream of the current streaming media file to the terminal device;
  • a first obtaining module configured to acquire, according to the pause message received by the receiving module, a first play time parameter of the current streaming media file paused;
  • a second obtaining module configured to acquire the second play time parameter from the play message received by the receiving module
  • a comparison module configured to compare a first play time parameter acquired by the first acquiring module with a second play time parameter acquired by the second acquiring module, to generate a comparison result
  • a play control module configured to select to play the current streaming media file according to the comparison result of the comparison module Other streaming files that are playlists.
  • a streaming media playback control system provided by an embodiment of the present invention includes:
  • the terminal device is configured to send, to the streaming media server, a pause message requesting to pause the current streaming media file, and a playback message carrying the second play time parameter for locating the playback location of the streaming media file, and send the streaming media server to send the message.
  • Media stream parsing and playing the media stream;
  • a streaming media server configured to receive a pause message and a play message from the terminal device, respectively acquire a first play time parameter of the current streaming media file pause according to the pause message and the play message, and And locating the second play time parameter of the streaming media play location, comparing the first play time parameter and the second play time parameter, and selecting other streaming media files of the playlist to which the current streaming media file belongs according to the comparison result.
  • FIG. 1 is a flowchart of a streaming media playback control method according to an embodiment of the present invention
  • FIG. 1A is a flowchart of a streaming media playback control method according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a streaming media playback control system according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a streaming media server according to an embodiment of the present invention.
  • FIG. 1 is a flowchart of a streaming media playback control method according to an embodiment of the present invention, including the following steps:
  • the pause message may be an RTSP pause message.
  • the terminal device interacting with the streaming media server to play the streaming media file, if the user wants to skip the streaming media file currently playing in the playlist, watching The next-level media file in the playlist may send an RTSP pause message to the streaming server through the terminal device, requesting the streaming media server to pause playing the currently playing streaming media file.
  • the media stream may be RTP (Real-time Transport)
  • the streaming server pauses to send the RTP media stream of the currently playing streaming media file to the terminal device, and acquires the current The streaming media file is paused for the first play time parameter.
  • the first play time parameter NPT1 of the current streaming media file paused may be obtained directly from the RTSP pause message, or the RTSP pause message may be obtained according to the play information of the streaming media file.
  • the NPT1 of the current streaming media file for example, the starting play point of the currently playing streaming media file is 0th second, and after receiving the RTSP pause message, the streaming media file is normally played for 100 seconds, then the NP The T1 value can be recorded as 100.
  • [39] 103 receiving a play message sent by the terminal device, and acquiring a second play time parameter, where the play message carries a second play time parameter for positioning a play position of the streaming media file;
  • the play message may be an RTSP play message
  • the terminal device after receiving the response of the streaming media server to the RTSP pause message, the terminal device sends an RTSP play message to the streaming media server, where the RTSP play message is carried for positioning.
  • the second play time parameter NPT2 of the streaming media file playback position may be an RTSP play message
  • [41] 104 Compare the first play time parameter and the second play time parameter, and select another streaming media file that plays the playlist to which the current streaming media file belongs according to the comparison result.
  • the step of selecting another streaming media file that plays the playlist to which the current streaming media file belongs according to the comparison result may include: if the comparison result is that the NPT2 parameter is greater than the NPT1, the current streaming media file The media stream of the next-level media file of the playlist is delivered to the terminal device; if the comparison result is that the NPT2 parameter is smaller than the NPT1, the start of the first-class media file from the playlist to which the current streaming media file belongs The location delivers a media stream to the terminal device.
  • the following examples illustrate the above playback control method:
  • the playlist includes a streaming media file, a file B, and a file C in sequence
  • the normal playback start point of the file A is 0 seconds
  • the normal playback start point of the file B is the 300th second.
  • the normal playback start point of file C is the 600th second.
  • the first play time parameter NPT1 of the current streaming media file acquired in 102 is 320
  • the second play time parameter NPT2 for positioning the streaming media file play position obtained in 103 is 400, and the comparison is performed.
  • NPT1 and NPT2 when the NPT2 is greater than the NPT1, the RTP media stream is sent to the terminal device from the start position of the next-class media file of the playlist to which the current streaming media file belongs, that is, from the start position of the file C.
  • the RTP media stream of file C is delivered to the terminal device in the 600th second.
  • the NPT2 is smaller than the NPT1, the RTP media stream is sent from the starting position of the first-class media file of the playlist to which the current streaming media file belongs, that is, from the starting position of the file A. The second starts to deliver the RTP media stream of file A to the terminal device.
  • FIG. 1A is a flowchart of a streaming media playback control method according to an embodiment of the present invention, including the following steps:
  • the terminal device obtains playlist information by accessing the EPG server of the streaming media service platform.
  • the playlist information herein may include a description of the playlist and a URI for initiating the on-demand.
  • the playlist 1 shown in FIG. 1A is a specific example of a playlist 1 including a file A, a file B, a file C, and a file D.
  • a specific example of rtsp://192.168.20.2:554/playlistl.smil is shown in Figure 1A as the originating URI.
  • the terminal device initiates an on-demand request to the streaming server through the originating on-demand URI in the playlist information, and the terminal device performs RTSP OPTION (option), DESCRIBE (description), SETUP (establishment), and the streaming media server.
  • RTSP OPTION optional
  • DESCRIBE description
  • SETUP establishment
  • PLAY play
  • the terminal device sends an OPTIONS request message to the streaming media server, and the streaming media server notifies the terminal device in the 0 PTIONS response message: the RTSP command supported by the streaming media server.
  • the terminal device sends a DESCRIBE request message to the streaming server to request a link (request The associated description parameter of the media file specified in the URL), the terminal device initializes the media decoder with the description parameter.
  • the terminal device sends a SETUP request message to the streaming media server, where the SETUP request message carries a transport protocol (such as TCP or UDP) that the client wants to use during data transmission, and the streaming media server sends a SETUP response message to the terminal device, and the SETUP response message It carries the transmission parameters specified by the streaming server including the transmission protocol.
  • the terminal device sends a P LAY request message to the streaming server to inform the streaming server that the media data can be transmitted using the transport mechanism specified in the SETUP request message.
  • the range parameter in the PLAY request message includes the playback range of the media data. After receiving the PLAY request message, the streaming server sends the media to the terminal device according to the media data specified by the range parameter, the playback point and the media data end playback point. data.
  • the streaming media server sends the RTP media stream of the playlist 1 file A to the terminal.
  • S5. The terminal receives the RTP media stream, and decodes and plays the received RPT media stream.
  • the user wants to skip the file A being played, watch the file B, the user operates the terminal, select the forward function button, and to S6, the terminal receives the command corresponding to the forward button.
  • the terminal sends an RTSP pause request message to the streaming server.
  • the streaming server returns a response to the pause request message to the terminal.
  • the streaming media server pauses to send the RTP media stream of the file A to the terminal, and the streaming media server records the npt value carried in the message. If the message does not carry the npt value, the streaming media server calculates the received pause according to the playing information. The npt value of the message, and the calculated npt value is recorded. The npt value recorded by the streaming server can be called nptpause, which is the first playing time parameter.
  • the terminal After receiving the response of the pause message sent by the streaming media server, the terminal sends an RTSP play request message to the streaming media server, where the play request message carries an npt value. Thereafter, the npt value carried in the play request message may be the npt value in the play request message of the forward function.
  • the streaming media server obtains an npt value from the Play request message, and the npt value may be referred to as nptplay, that is, the second play time parameter, and the value of nptplay may be represented as XXX .
  • Streaming server compares nptplay and npt pause, thanks to nptplay
  • the value is greater than the value of nptpause, so the streaming server plays from file B.
  • the streaming media server sends the RTP media stream of the file B to the terminal, and then, the value of npt is the file B pair.
  • the npt value corresponding to file B may or may not be xxx.
  • FIG. 2 is a structural diagram of a streaming media playback control system according to an embodiment of the present invention.
  • the system mainly includes: a terminal device 20 and a streaming media server 21.
  • the terminal device 20 is configured to send, to the streaming media server 21, a pause message requesting to pause the current streaming media file and a playback message for locating the playback location of the streaming media file, and receive the media stream delivered by the streaming media server 21, and the media stream is sent to the media stream. Parse and play;
  • the streaming media server 21 is configured to receive a pause message and a play message from the terminal device 20, and acquire, according to the pause message and the play message, a first play time parameter of the current streaming media file pause The second playing time parameter for positioning the streaming media playing position, comparing the first playing time parameter and the second playing time parameter, and selecting other streaming media files of the playlist to which the current streaming media file belongs according to the comparison result.
  • the streaming server 21 receives a pause message from the terminal device 20 requesting to pause the playback of the current streaming media file, requesting the streaming media server to pause playing the streaming media file currently being played. After receiving the pause message, the streaming server 21 pauses to send the media stream of the current streaming media file to the terminal device 20, and acquires the first play time parameter of the current streaming media file pause; for example, the currently played streaming media file.
  • the streaming server 21 receives the RTSP pause message, and the streaming file is normally played for 100 seconds, and the first play time parameter can be recorded as 100.
  • the streaming media server 21 receives the playback message sent by the terminal device 200, and the playback message carries a second playback time parameter for positioning the playback location of the streaming media file, and the streaming media server 21 acquires the second playback time parameter; Comparing the first play time parameter and the second play time parameter, if the comparison result is that the second play time parameter is greater than the first play time parameter, the streaming media server 21 is from the next best media of the playlist to which the current streaming media file belongs.
  • the starting position of the file is sent to the terminal device 20; if the comparison result is that the second playing time parameter is smaller than the first playing time parameter, the streaming media server 21 obtains the first-class media file from the playlist to which the current streaming media file belongs. The starting position delivers a media stream to the terminal device 20.
  • FIG. 3 is a schematic structural diagram of a streaming media server according to the present invention.
  • the streaming media server 21 mainly includes a receiving module 210, a pause control module 211, and a An acquisition module 212, a second acquisition module 213, a comparison module 214, and a playback control module 215, the functions and connections between the modules will be described in detail below.
  • the receiving module 210 is configured to receive a pause message and a play message from the terminal device requesting to pause playing the current streaming media file, where the play message carries a second play time parameter for locating the playback position of the streaming media file;
  • the pause message may be a real streaming media protocol RTSP pause message, and the play message may be an RTSP play message.
  • the suspension control module 211 is configured to: when the receiving module 210 receives the pause message, suspend sending the media stream of the current streaming media file to the terminal device; the media stream may be an RTP media stream.
  • the first obtaining module 212 is configured to acquire, according to the pause message received by the receiving module 210, the first play time parameter of the current streaming media file pause.
  • the first acquiring module 212 includes a determining unit 2120, configured to determine whether the first broadcast parameter of the current streaming media file pauses is carried in the pause message received by the receiving module 210;
  • the unit 2121 is configured to: when the determining result of the determining unit 2120 is YES, obtain the first playing time parameter from the pause message received by the receiving module 210; and the second obtaining executing unit 2122 is configured to
  • the determining unit 2120 determines that the result is no, and obtains, according to the streaming media file playing message, the first playing time parameter that the receiving module 210 receives the pause message ⁇ the current streaming media file.
  • the second obtaining module 213 is configured to obtain the second play time parameter from the play message received by the receiving module 210.
  • the comparison module 214 is configured to compare the first play time parameter acquired by the first obtaining module 212 with the second play time parameter acquired by the second obtaining module 213 to generate a comparison result;
  • the play control module 215 is configured to select, according to the comparison result of the comparison module 214, another streaming media file that plays a playlist to which the current streaming media file belongs.
  • the play control module 215 mainly includes a next file play control sub-unit 2150, configured to: when the comparison result of the comparison module 214 is that the second play time parameter is greater than the first play time parameter
  • the media stream is sent to the terminal device from the start position of the next-level media file of the playlist to which the current streaming media file belongs;
  • the previous file play control sub-unit 2151 is configured to: when the comparison result of the comparison module 214 is the After the second play time parameter is smaller than the first play time parameter, the media stream is sent from the start position of the first-class media file of the playlist to which the current streaming media file belongs to the terminal device.
  • the streaming media playback control method, device, and system provided by the embodiment of the present invention obtain the first pause of the current streaming media file by receiving a pause message for requesting to pause the current streaming media file from the terminal device. Playing the inter-day parameter, and receiving the play message sent by the terminal device, acquiring a second play time parameter for positioning the play position of the streaming media file from the play message, by comparing the first play time parameter and the first The second playing time parameter is selected, and then the other streaming media files of the playlist to which the current streaming media file belongs are selected according to the comparison result. In the process of playing the streaming media file, the other streaming media files in the playlist of the current streaming media can be selected to be played, which facilitates the user to select the streaming media file, thereby increasing the user experience.
  • the program can be stored in a computer readable storage medium, and the program, after execution, can include the flow of an embodiment of the methods described above.
  • the storage medium may be a magnetic disk, an optical disk, or a read-only storage memory (Read-Only)

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

公开了一种流媒体播放控制方法,包括:接收来自终端设备的请求暂停播放当前流媒体文件的暂停消息,暂停向所述终端设备发送当前流媒体文件的媒体流,并获取当前流媒体文件暂停时的第一播放时间参数,接收终端设备发送的播放消息,所述消息携带有用于定位流媒体文件播放位置的第二播放时间参数,比较所述第一播放时间参数和第二播放时间参数,根据比较结果选择播放当前流媒体文件所属播放列表的其它流媒体文件。相应的,还公开了一种流媒体播放控制设备及系统,实现了在流媒体文件播放过程中,可选择播放当前流媒体所属播放列表中的其它流媒体文件,便于用户对流媒体文件的选择操作,增加了用户体验感。

Description

说明书 一种流媒体播放控制方法、 设备及系统
[1] 本申请要求于 2008年 11月 24日提交中国专利局、 申请号为 200810219346.5、 发 明名称为"一种流媒体播放控制方法、 设备及系统"的中国专利申请的优先权, 其 全部内容通过弓 I用结合在本申请中。
[2] 技术领域
[3] 本发明涉及通信技术领域, 尤其涉及一种流媒体播放控制方法、 设备及系统。
[4] 发明背景
[5] 随着无线网络的发展, 基于流媒体系统进行视频点播、 直播业务的流媒体业务
, 越来越受到广大用户的喜爱。 在流媒体业务的使用过程中, 可以通过创建播 放列表功能来实现连续播放多个音视频文件。 播放列表是指将待播放的音视频 文件信息依次加入到列表中, 播放吋流媒体服务器按照播放列表中的文件出现 的先后顺序进行播放。 终端和流媒体服务器之间基于标准实吋流媒体协议 (Real Time Streaming
Protocol, RTSP) 过程进行交互, 对整个播放列表, 流媒体服务器按照一个单一 的文件进行播放控制。
[6] 流媒体业务的基本流程是: 系统管理员通过内容管理系统 (Content
Management
System, CMS) 发布流媒体文件, 所述流媒体文件被同步给流媒体服务器; 流 媒体服务器和 CMS交互生成供终端向流媒体服务器发起点播的 RTSP
通用资源标识符 (RTPS Universal Resource Identifier, RTPS
URI) ; CMS再将流媒体文件的元数据 (包括 URI、 描绘、 价格信息等) 同步给 电子节目单 (Electronic
Program, EPG) 服务器, 供向终端展示用。 终端访问 EPG, 获得 URI, 通过 URI 向流媒体服务器发起访问。
[7] 发明人在实现本发明的过程中, 发现在现有技术中,
RTSP交互过程是对单个流媒体播放文件的控制而设计的, 所以在流媒体文件的 播放过程中, 只能将整个播放列表中的所有文件当作一个媒体文件进行播放控 制。 如果要定位到播放列表中的某个文件, 则需要像控制单个文件一样, 拖动 播放器的进度条, 或者进行多次前进、 后退操作。
[8] 发明内容
[9] 鉴于上述现有技术所存在的问题, 本发明实施例提供了一种流媒体播放控制方 法、 设备及系统, 以实现在流媒体文件播放过程中, 可选择播放当前流媒体所 属播放列表中的其它流媒体文件。
[10] 本发明实施例提供的一种流媒体播放控制方法, 包括:
[11] 接收来自终端设备的请求暂停播放当前流媒体文件的暂停消息;
[12] 暂停向所述终端设备发送当前流媒体文件的媒体流, 并获取所述当前流媒体文 件暂停吋的第一播放吋间参数;
[13] 接收终端设备发送的播放消息, 所述播放消息携带有用于定位流媒体文件播放 位置的第二播放吋间参数;
[14] 比较所述第一播放吋间参数和所述第二播放吋间参数, 根据比较结果选择播放 当前流媒体文件所属播放列表的其它流媒体文件。
[15] 本发明实施例提供的一种流媒体播放控制设备, 包括:
[16] 接收模块, 用于接收来自终端设备的请求暂停播放当前流媒体文件的暂停消息 和播放消息, 所述播放消息携带有用于定位流媒体文件播放位置的第二播放吋 间参数;
[17] 暂停控制模块, 用于当所述接收模块接收到暂停消息吋, 暂停向所述终端设备 发送当前流媒体文件的媒体流;
[18] 第一获取模块, 用于根据所述接收模块接收到的暂停消息获取当前流媒体文件 暂停吋的第一播放吋间参数;
[19] 第二获取模块, 用于从所述接收模块接收到的所述播放消息中获取所述第二播 放吋间参数;
[20] 比较模块, 用于对所述第一获取模块获取的第一播放吋间参数和所述第二获取 模块获取的第二播放吋间参数进行比较, 生成比较结果;
[21] 播放控制模块, 用于根据所述比较模块的比较结果选择播放当前流媒体文件所 属播放列表的其它流媒体文件。
[22] 本发明实施例提供的一种流媒体播放控制系统, 包括:
[23] 终端设备, 用于向流媒体服务器发送请求暂停播放当前流媒体文件的暂停消息 和携带有用于定位流媒体文件播放位置的第二播放吋间参数的播放消息, 接收 流媒体服务器下发的媒体流, 对所述媒体流进行解析并播放;
[24] 流媒体服务器, 用于接收来自所述终端设备的暂停消息和播放消息, 根据所述 暂停消息和播放消息分别获取所述当前流媒体文件暂停吋的第一播放吋间参数 和用于定位流媒体播放位置的第二播放吋间参数, 比较所述第一播放吋间参数 和第二播放吋间参数, 根据比较结果选择播放当前流媒体文件所属播放列表的 其它流媒体文件。
[25] 本发明实施例在接收来自终端设备的请求暂停播放当前流媒体文件的暂停消息 吋, 获取所述当前流媒体文件暂停吋的第一播放吋间参数, 并接收终端设备发 送的播放消息, 从所述播放消息获取用于定位流媒体文件播放位置的第二播放 吋间参数, 通过比较所述第一播放吋间参数和所述第二播放吋间参数, 进而根 据比较结果选择播放当前流媒体文件所属播放列表的其它流媒体文件。 实现了 在流媒体文件播放过程中, 可选择播放当前流媒体所属播放列表中的其它流媒 体文件, 便于用户对流媒体文件的选择操作, 增加了用户体验感。
[26] 附图简要说明
[27] 为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实施例或 现有技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面描述中的 附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创 造性劳动性的前提下, 还可以根据这些附图获得其它的附图。
[28] 图 1是本发明实施例一种流媒体播放控制方法的流程图;
[29] 图 1A是本发明实施例一种流媒体播放控制方法的流程图;
[30] 图 2是本发明实施例一种流媒体播放控制系统的结构示意图;
[31] 图 3是本发明实施例一种流媒体服务器的结构示意图。
[32] 实施本发明的方式
[33] 下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是全部 的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有作出创造性劳 动前提下所获得的所有其它实施例, 都属于本发明保护的范围。
[34] 图 1是本发明实施例一种流媒体播放控制方法的流程图, 包括以下步骤:
[35] 101, 接收来自终端设备的请求暂停播放当前流媒体文件的暂停消息;
[36] 具体的, 所述暂停消息可以为 RTSP暂停消息, 在终端设备与流媒体服务器进 行交互播放流媒体文件的过程中, 如果用户想跳过播放列表中当前正在播放的 流媒体文件, 观看所述播放列表中的下一流媒体文件, 则可以通过终端设备向 流媒体服务器发送 RTSP暂停消息, 请求流媒体服务器暂停播放当前正在播放的 流媒体文件。
[37] 102, 暂停向所述终端设备发送当前流媒体文件的媒体流, 并获取所述当前流 媒体文件暂停吋的第一播放吋间参数;
[38] 具体的, 所述媒体流可以为 RTP (Real-time Transport
Protocol, 实吋传输协议) 媒体流, 流媒体服务器接收到来自终端设备发送的 RT SP暂停消息后, 暂停向所述终端设备发送当前正在播放的流媒体文件的 RTP媒体 流, 并获取所述当前流媒体文件暂停吋的第一播放吋间参数。 在具体实施吋, 可以直接从所述 RTSP暂停消息中获取所述当前流媒体文件暂停吋的第一播放吋 间参数 NPT1, 也可以根据流媒体文件的播放信息获取接收到所述 RTSP暂停消息 吋当前流媒体文件的 NPT1 , 例如, 当前播放的流媒体文件的起始播放点吋间为 第 0秒, 收到所述 RTSP暂停消息吋, 该流媒体文件正常播放了 100秒, 则所述 NP T1值可记录为 100。
[39] 103, 接收终端设备发送的播放消息, 获取第二播放吋间参数, 所述播放消息 携带有用于定位流媒体文件播放位置的第二播放吋间参数;
[40] 具体的, 所述播放消息可以为 RTSP播放消息, 终端设备在接收到流媒体服务 器对 RTSP暂停消息的响应后, 向流媒体服务器发送 RTSP播放消息, 所述 RTSP 播放消息携带有用于定位流媒体文件播放位置的第二播放吋间参数 NPT2。
[41] 104, 比较所述第一播放吋间参数和第二播放吋间参数, 根据比较结果选择播 放当前流媒体文件所属播放列表的其它流媒体文件。 [42] 此处, 所述根据比较结果选择播放当前流媒体文件所属播放列表的其它流媒体 文件的步骤具体可包括: 若比较结果为所述 NPT2参数大于所述 NPT1 , 则从当前 流媒体文件所属播放列表的下一流媒体文件的起始位置向终端设备下发媒体流 ; 若比较结果为所述 NPT2参数小于所述 NPT1 , 则从当前流媒体文件所属播放列 表的上一流媒体文件的起始位置向终端设备下发媒体流。 下面举例对上述播放 控制方法进行说明:
[43] 假设所述播放列表中依次包含有流媒体文件 、 文件 B、 文件 C, 文件 A的正常 播放起始点吋间为第 0秒, 文件 B的正常播放起始点吋间为第 300秒, 文件 C正常 播放起始点吋间为第 600秒。 假设在 102中获取的暂停吋当前流媒体文件的第一 播放吋间参数 NPT1为 320, 在 103中获取的用于定位流媒体文件播放位置的第二 播放吋间参数 NPT2为 400, 比较所述 NPT1和 NPT2, 得到所述 NPT2大于所述 NPT 1, 则从当前流媒体文件所属播放列表的下一流媒体文件的起始位置向终端设备 下发 RTP媒体流, 也即从文件 C的起始位置第 600秒开始向终端设备下发文件 C的 RTP媒体流。 同理, 若所述 NPT2小于所述 NPT1 , 则从当前流媒体文件所属播放 列表的上一流媒体文件的起始位置向终端设备下发 RTP媒体流, 也即从文件 A的 起始位置第 0秒开始向终端设备下发文件 A的 RTP媒体流。
[44] 图 1A是本发明实施例一种流媒体播放控制方法的流程图, 包括以下步骤:
[45] Sl、 终端设备通过访问流媒体业务平台的 EPG服务器获得播放列表信息。 这里 的播放列表信息可以包括播放列表的描述和发起点播的 URI等。
[46] 图 1A中示出的播放列表 1为播放列表的一个具体的例子, 播放列表 1包括文件 A 、 文件 B、 文件 C和文件 D。 图 1A中示出 rtsp://192.168.20.2:554/playlistl.smil为发 起点播的 URI的一个具体的例子。
[47] S2、 终端设备通过播放列表信息中的发起点播的 URI向流媒体服务器发起点播 请求, 终端设备会与流媒体服务器进行 RTSP的 OPTION (选项) 、 DESCRIBE ( 描述) 、 SETUP (建立) 、 PLAY (播放) 请求等消息交互。
具体的, 终端设备向流媒体服务器发送 OPTIONS请求消息, 流媒体服务器在 0 PTIONS响应消息中告知终端设备: 流媒体服务器支持的 RTSP命令。 终端设备向 流媒体服务器发送 DESCRIBE请求消息, 以请求链接 (request URL) 中指定的媒体文件的相关描述参数, 终端设备利用该描述参数对媒体解 码器进行初始化。 终端设备向流媒体服务器发送 SETUP请求消息, SETUP请求 消息中携带有客户端在数据传输吋希望使用的传送协议 (如 TCP或者 UDP等) , 流媒体服务器向终端设备发送 SETUP响应消息, SETUP响应消息中携带有流媒 体服务器指定的包括传送协议在内的传输参数。 终端设备向流媒体服务器发送 P LAY请求消息, 以告知流媒体服务器可以使用 SETUP请求消息中指定的传输机 制传送媒体数据。 PLAY请求消息中的 range (范围) 参数包含有媒体数据的播放 范围, 流媒体服务器接收到 PLAY请求消息后, 根据 range参数指定的媒体数据幵 始播放点和媒体数据结束播放点向终端设备发送媒体数据。
[49] S3、 流媒体服务器在处理终端的 PLAY请求消息后, 播放列表 1中的文件八。
[50] S4、 流媒体服务器向终端发送播放列表 1文件 A的 RTP媒体流。
[51] S5、 终端接收 RTP媒体流, 对接收到的 RPT媒体流进行解码并播放。
[52] 用户想跳过正在播放的文件 A, 观看文件 B, 用户操作终端, 选择前进功能按 键, 到 S6、 终端接收到前进按键对应的命令。
[53] S7、 终端向流媒体服务器发送 RTSP的 pause (暂停) 请求消息。 流媒体服务器 向终端返回 pause请求消息的响应。
[54] S8、 流媒体服务器暂停向终端发送文件 A的 RTP媒体流, 流媒体服务器记录消 息中携带的 npt值, 如果消息中没有携带 npt值, 则流媒体服务器根据播放信息计 算出接收到 pause消息吋的 npt值, 并记录该计算出的 npt值。 流媒体服务器记录的 npt值可以称为 nptpause, 即第一播放吋间参数。
[55] S9、 终端在接收到流媒体服务器发送的 pause消息的响应后, 向流媒体服务器 发送 RTSP的 play请求消息, play请求消息中携带有 npt值。 此吋, play请求消息中 携带的 npt值可以是前进功能的 play请求消息中的 npt值。
[56] S10、 流媒体服务器从 Play请求消息中获取 npt值, 该 npt值可以称为 nptplay, 即 第二播放吋间参数, nptplay的值可以表示为 XXX。 流媒体服务器比较 nptplay和 npt pause, 由于 nptplay
的值比 nptpause的值大, 因此, 流媒体服务器从文件 B幵始处播放。
[57] Sl l、 流媒体服务器向终端发送文件 B的 RTP媒体流, 此吋, npt的值为文件 B对 应的 npt值, 文件 B对应的 npt值可以为 χχχ, 也可以不为 xxx。
[58] S12、 终端接收 RTP媒体流, 对接收到的 RTP媒体流进行解码并播放, 从文件 A 的播放画面跳跃到文件 B的幵始画面, 下一文件选择功能的交互过程结束。 图 2 为本发明实施例一种流媒体播放控制系统的结构图。 所述系统主要包括: 终端 设备 20和流媒体服务器 21。 其中: 终端设备 20用于向流媒体服务器 21发送请求 暂停播放当前流媒体文件的暂停消息和定位流媒体文件播放位置的播放消息, 接收流媒体服务器 21下发的媒体流, 对所述媒体流进行解析并播放;
[59] 流媒体服务器 21, 用于接收来自所述终端设备 20的暂停消息和播放消息, 根据 所述暂停消息和播放消息分别获取所述当前流媒体文件暂停吋的第一播放吋间 参数和用于定位流媒体播放位置的第二播放吋间参数, 比较所述第一播放吋间 参数和第二播放吋间参数, 根据比较结果选择播放当前流媒体文件所属播放列 表的其它流媒体文件。
[60] 具体的说, 流媒体服务器 21接收来自终端设备 20的请求暂停播放当前流媒体文 件的暂停消息, 请求流媒体服务器暂停播放当前正在播放的流媒体文件。 流媒 体服务器 21在接收到暂停消息后, 暂停向终端设备 20发送当前流媒体文件的媒 体流, 并获取当前流媒体文件暂停吋的第一播放吋间参数; 例如, 当前播放的 流媒体文件的起始播放点吋间为第 0秒, 流媒体服务器 21接收到 RTSP暂停消息吋 , 该流媒体文件正常播放了 100秒, 则第一播放吋间参数可记录为 100。 流媒体 服务器 21接收终端设备 200发送的播放消息, 播放消息携带有用于定位流媒体文 件播放位置的第二播放吋间参数, 流媒体服务器 21获取第二播放吋间参数; 第 一播放吋间参数比较第一播放吋间参数和第二播放吋间参数, 如果比较结果为 第二播放吋间参数大于第一播放吋间参数, 则流媒体服务器 21从当前流媒体文 件所属播放列表的下一流媒体文件的起始位置向终端设备 20下发媒体流; 如果 比较结果为第二播放吋间参数小于第一播放吋间参数, 则流媒体服务器 21从当 前流媒体文件所属播放列表的上一流媒体文件的起始位置向终端设备 20下发媒 体流。
[61] 下面结合图 3对流媒体服务器 21进行描述, 图 3是本发明一种流媒体服务器的结 构示意图, 所述流媒体服务器 21主要包括接收模块 210、 暂停控制模块 211、 第 一获取模块 212、 第二获取模块 213, 比较模块 214以及播放控制模块 215, 下面 将对各模块的功能和之间的联系作详细的说明。
[62] 接收模块 210, 用于接收来自终端设备的请求暂停播放当前流媒体文件的暂停 消息和播放消息, 所述播放消息携带有用于定位流媒体文件播放位置的第二播 放吋间参数; 此处, 所述暂停消息可以为实吋流媒体协议 RTSP暂停消息, 所述 播放消息可以为 RTSP播放消息。
[63] 暂停控制模块 211, 用于当所述接收模块 210接收到暂停消息吋, 暂停向所述终 端设备发送当前流媒体文件的媒体流; 所述媒体流可以为 RTP媒体流。
[64] 第一获取模块 212, 用于根据所述接收模块 210接收到的暂停消息获取当前流媒 体文件暂停吋的第一播放吋间参数。 具体的, 所述第一获取模块 212包括判断单 元 2120, 用于判断所述接收模块 210接收到的暂停消息中是否携带有当前流媒体 文件暂停吋的第一播放吋间参数; 第一获取执行单元 2121, 用于在所述判断单 元 2120的判断结果为是吋, 从所述接收模块 210接收到的暂停消息中获取所述第 一播放吋间参数; 第二获取执行单元 2122, 用于在所述判断单元 2120判断结果 为否吋, 根据流媒体文件播放消息获取所述接收模块 210接收到所述暂停消息吋 当前流媒体文件的所述第一播放吋间参数。
[65] 第二获取模块 213, 用于从所述接收模块 210接收到的所述播放消息中获取所述 第二播放吋间参数。
[66] 比较模块 214, 用于对所述第一获取模块 212获取的第一播放吋间参数和第二获 取模块 213获取的第二播放吋间参数进行比较, 生成比较结果;
[67] 播放控制模块 215, 用于根据所述比较模块 214的比较结果选择播放当前流媒体 文件所属播放列表的其它流媒体文件。 具体的, 所述播放控制模块 215主要包括 下一文件播放控制子单元 2150, 用于当所述比较模块 214的比较结果为所述第二 播放吋间参数大于所述第一播放吋间参数吋, 从当前流媒体文件所属播放列表 的下一流媒体文件的起始位置向终端设备下发媒体流; 上一文件播放控制子单 元 2151, 用于当所述比较模块 214的比较结果为所述第二播放吋间参数小于所述 第一播放吋间参数吋, 从当前流媒体文件所属播放列表的上一流媒体文件的起 始位置向终端设备下发媒体流。 [68] 本发明实施例提供的流媒体播放控制方法、 设备及系统, 通过在接收来自终端 设备的请求暂停播放当前流媒体文件的暂停消息吋, 获取所述当前流媒体文件 暂停吋的第一播放吋间参数, 并接收终端设备发送的播放消息, 从所述播放消 息获取用于定位流媒体文件播放位置的第二播放吋间参数, 通过比较所述第一 播放吋间参数和所述第二播放吋间参数, 进而根据比较结果选择播放当前流媒 体文件所属播放列表的其它流媒体文件。 实现了在流媒体文件播放过程中, 可 选择播放当前流媒体所属播放列表中的其它流媒体文件, 便于用户对流媒体文 件的选择操作, 增加了用户体验感。
[69] 本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程, 是可 以通过计算机程序来指令相关的硬件来完成。 所述的程序可存储于一计算机可 读取存储介质中, 该程序在执行吋, 可包括如上述各方法的实施例的流程。 其 中, 所述的存储介质可为磁碟、 光盘、 只读存储记忆体 (Read-Only
Memory, ROM) 或随机存储记忆体 (Random Access Memory, RAM) 等。 显然, 本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的 精神和范围。 这样, 倘若本发明的这些修改和变型属于本发明权利要求及其等 同技术的范围之内, 则本发明也意图包含这些改动和变型在内。

Claims

权利要求书
[1] 一种流媒体播放控制方法, 其特征在于, 包括:
接收来自终端设备的请求暂停播放当前流媒体文件的暂停消息; 暂停向所述终端设备发送当前流媒体文件的媒体流, 并获取所述当前流媒 体文件暂停吋的第一播放吋间参数;
接收终端设备发送的播放消息, 所述播放消息携带有用于定位流媒体文件 播放位置的第二播放吋间参数;
比较所述第一播放吋间参数和所述第二播放吋间参数, 根据比较结果选择 播放当前流媒体文件所属播放列表的其它流媒体文件。
[2] 如权利要求 1所述的方法, 其特征在于, 所述根据比较结果选择播放当前流 媒体文件所属播放列表的其它流媒体文件的步骤包括:
若比较结果为所述第二播放吋间参数大于所述第一播放吋间参数, 则从当 前流媒体文件所属播放列表的下一流媒体文件的起始位置向终端设备下发 媒体流; 若比较结果为所述第二播放吋间参数小于所述第一播放吋间参数 , 则从当前流媒体文件所属播放列表的上一流媒体文件的起始位置向终端 设备下发媒体流。
[3] 如权利要求 1所述的方法, 其特征在于, 所述暂停消息中携带有所述第一播 放吋间参数, 所述获取所述当前流媒体文件暂停吋的第一播放吋间参数具 体为:
从所述暂停消息中获取接收到所述暂停消息吋当前流媒体文件的所述第一 播放吋间参数。
[4] 如权利要求 1所述的方法, 其特征在于, 所述获取所述当前流媒体文件暂停 吋的第一播放吋间参数具体为:
根据流媒体文件播放消息获取接收到所述暂停消息吋当前流媒体文件的所 述第一播放吋间参数。
[5] 如权利要求 1至 4任意一项所述的方法, 其特征在于, 所述暂停消息为实吋 流媒体协议 RTSP暂停消息; 所述播放消息为 RTSP播放消息; 所述媒体流 为实吋传输协议 RTP媒体流。
[6] 一种流媒体播放控制设备, 其特征在于, 包括:
接收模块, 用于接收来自终端设备的请求暂停播放当前流媒体文件的暂停 消息和播放消息, 所述播放消息携带有用于定位流媒体文件播放位置的第 二播放吋间参数;
暂停控制模块, 用于当所述接收模块接收到暂停消息吋, 暂停向所述终端 设备发送当前流媒体文件的媒体流;
第一获取模块, 用于根据所述接收模块接收到的暂停消息获取当前流媒体 文件暂停吋的第一播放吋间参数;
第二获取模块, 用于从所述接收模块接收到的所述播放消息中获取所述第 二播放吋间参数;
比较模块, 用于对所述第一获取模块获取的第一播放吋间参数和所述第二 获取模块获取的第二播放吋间参数进行比较, 生成比较结果; 播放控制模块, 用于根据所述比较模块的比较结果选择播放当前流媒体文 件所属播放列表的其它流媒体文件。
[7] 如权利要求 6所述的设备, 其特征在于, 所述播放控制模块包括:
下一文件播放控制子单元, 用于当所述比较模块的比较结果为所述第二播 放吋间参数大于所述第一播放吋间参数吋, 从当前流媒体文件所属播放列 表的下一流媒体文件的起始位置向终端设备下发媒体流;
上一文件播放控制子单元, 用于当所述比较模块的比较结果为所述第二播 放吋间参数小于所述第一播放吋间参数吋, 从当前流媒体文件所属播放列 表的上一流媒体文件的起始位置向终端设备下发媒体流。
[8] 如权利要求 6所述的设备, 其特征在于, 所述第一获取模块包括:
判断单元, 用于判断所述接收模块接收到的所述暂停消息中是否携带有当 前流媒体文件暂停吋的第一播放吋间参数;
第一获取执行单元, 用于在所述判断单元的判断结果为是吋, 从所述接收 模块接收到的暂停消息中获取所述第一播放吋间参数;
第二获取执行单元, 用于在所述判断单元判断结果为否吋, 根据流媒体文 件播放消息获取所述接收模块接收到所述暂停消息吋当前流媒体文件的所 述第一播放吋间参数。
[9] 如权利要求 6至 8任意一项所述的设备, 其特征在于, 所述暂停消息为实吋 流媒体协议 RTSP暂停消息; 所述播放消息为 RTSP播放消息; 所述媒体流 为实吋传输协议 RTP媒体流。
[10] 一种流媒体播放控制系统, 其特征在于, 包括:
终端设备, 用于向流媒体服务器发送请求暂停播放当前流媒体文件的暂停 消息和携带有用于定位流媒体文件播放位置的第二播放吋间参数的播放消 息, 接收流媒体服务器下发的媒体流, 对所述媒体流进行解析并播放; 流媒体服务器, 用于接收来自所述终端设备的暂停消息和播放消息, 根据 所述暂停消息和播放消息分别获取所述当前流媒体文件暂停吋的第一播放 吋间参数和用于定位流媒体播放位置的第二播放吋间参数, 比较所述第一 播放吋间参数和第二播放吋间参数, 根据比较结果选择播放当前流媒体文 件所属播放列表的其它流媒体文件。
PCT/CN2009/073529 2008-11-24 2009-08-26 一种流媒体播放控制方法、设备及系统 WO2010057391A1 (zh)

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