CN102148812A - Method, server and system for realizing server side playlist - Google Patents
Method, server and system for realizing server side playlist Download PDFInfo
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- CN102148812A CN102148812A CN2010102704913A CN201010270491A CN102148812A CN 102148812 A CN102148812 A CN 102148812A CN 2010102704913 A CN2010102704913 A CN 2010102704913A CN 201010270491 A CN201010270491 A CN 201010270491A CN 102148812 A CN102148812 A CN 102148812A
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Abstract
The embodiment of the invention discloses a method, a server and a system for realizing a server side playlist, which relate to the field of streaming media, and can realize the server side playlist comprising a media content of different coding parameters through a simpler information interaction process. The method for realizing the server side playlist comprises the steps as follows: the coding parameters of a next media content to be played to a terminal in the playlist are checked; when the coding parameters of the next media content to be played to the terminal are different from the coding parameters of a media content being played to the terminal, the coding parameters of the media content to be played to the terminal are sent to the terminal before the next media content to be played to the terminal is played to the terminal. The invention is applied to streaming media services, in particular to mobile streaming media services.
Description
Technical field
The present invention relates to the stream media technology field, relate in particular to the method, server and the system that realize the server end playlist.
Background technology
The server end playlist is the basis of realizing that advertisement and NVOD (accurate TV Video On Demand) etc. are professional, and described server end playlist is meant the listed files played in order a plurality of media contents of streaming media server according to the server end appointment.
Supposing has such playlist content at server end, requires to intercut at the assigned address of terminal request play content the promotional literature of appointment.At first, when user one reaches the standard grade, intercut 5 seconds ad content Ad01.mp4 for the first time for the user; After described 5 seconds advertisement plays, begin to play the media content Movie.mp4 of user's request; When described media content Movie.mp4 is played to 180 seconds, intercut 5 seconds ad content Ad01.mp4 for the second time; After described ad content Ad01.mp4 finishes, continue to play described media content Movie.mp4 from 180 seconds positions of the media content Movie.mp4 of user request; After described media content Movie.mp4 plays end, play ad content Ad02.mp4.
When the user asked to play described media content Movie.mp4, streaming media server was play according to above-mentioned playlist, and what the terminal use watched is the content of playing according to the server end playlist.
Streaming media server sends media data according to the listed files order of server end appointment to terminal, and terminal receives described media data and decodes according to the coding parameter of described media data, is correctly decoded the back and shows media content.Yet the coding parameter of a plurality of media contents may be different in the server end playlist, when terminal can not be correctly decoded the media content of multiple different coding parameter, just can not realize the server end playlist functionality.
In the prior art, defined a kind of scheme of server end playlist of the media content that can realize having the different coding parameter in MS-RTSP (the Real-Time Streaming Protocol Windows Media Extensions) agreement.Comprise:
1. terminal sends request of data to streaming media server.
2. after receiving described request of data, streaming media server sends a reply terminal information according to play list file, the content of clear and definite designated user request is a media content in the playlist in described information, and describes the coding parameter information and the duration of first media content in the described playlist.
3. streaming media server is play described first items of media content.
4. terminal is play described first media content according to the coding parameter information decoding that receives.
5. after described first media content was play end, the items of media content of the current broadcast of streaming media server notice terminal was play and is finished.
6. the coding parameter information and the duration of the items of media content that will play of the streaming media server notice terminal next one.
7. terminal sends the message that described next items of media content is play in request.
8. after receiving that described request is play the message of described next items of media content, streaming media server is play described next items of media content.
9. terminal realizes the picture of described next media content according to the new coding parameter items of media content that the described next one will play of decoding.
In the described scheme, because the content that streaming media server sends to all clear and definite designated user request of media content information of terminal is a media content in the playlist at every turn, and the coding parameter information and the duration information of a media content in the described playlist are only described, so, when playing wherein certain items of media content, the user just can only position in this items of media content duration, perhaps switch to one, the starting position of next program, and can not directly navigate to the non-start position of other items of media content.And in the in progress media content broadcast of current terminal end, when needing to play the next item down media content, streaming media server all will be notified the coding parameter information and the duration information of terminal the next item down items of media content, and terminal need send new playing request message, described the next item down media content is play in request, increased the interaction flow of message in the playing process, process is more loaded down with trivial details.
Summary of the invention
Embodiments of the invention provide a kind of method, server and system that realizes the server end playlist, just can realize comprising the server end playlist of the media content of different coding parameter by comparatively simple information interactive process.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of method that realizes the server end playlist comprises:
Detect next in the playlist need be to the coding parameter of the media content of terminal plays;
When the described next one need be to the coding parameter of the media content of terminal plays with to the coding parameter of the media content of terminal plays not simultaneously, need be before the media content of terminal plays, the described next one need be sent to described terminal to the coding parameter of the media content of terminal plays to the described next one of terminal plays.
A kind of server of realizing the server end playlist comprises:
Detecting unit, be used for detecting playlist is next need be to the coding parameter of the media content of terminal plays;
Transmitting element, be used for when the described next one need be to the coding parameter of the media content of terminal plays with not simultaneously to the coding parameter of the media content of terminal plays, need be before the media content of terminal plays, the described next one need be sent to described terminal to the coding parameter of the media content of terminal plays to the described next one of terminal plays.
A kind of system that realizes the server end playlist comprises:
Streaming media server, be used for detecting playlist is next need be to the coding parameter of the media content of terminal plays; When the described next one need be to the coding parameter of the media content of terminal plays with to the coding parameter of the media content of terminal plays not simultaneously, need be before the media content of terminal plays, the described next one need be sent to described terminal to the coding parameter of the media content of terminal plays to the described next one of terminal plays;
Terminal, being used to receive the described next one need be to the coding parameter of the media content of terminal plays, and according to the media content of the described next needs of the coding parameter information decoding that receives to terminal plays.
The method of the realization server end playlist that the embodiment of the invention provides, server and system, streaming media server is in the service process to terminal, detect next need be to the coding parameter of the media content of terminal plays, when the described next one need change to the coded message of the media content of terminal plays, the described next one of streaming media server notice terminal need need be to the initial data bag sign of the media content data of terminal plays to the coded message of the media content of terminal plays and the described next one, and terminal is receiving that the described next one need be after the coded message of the media content of terminal plays, not needing to resend the described next one need be to the playing request message of the media content of terminal plays, and terminal can use the new coded message need be to the broadcast of decoding of the media content of terminal plays to the described next one.Thereby terminal can not upgraded because of the coding parameter of media content data in the server end playlist, and decoding error occurs, and broadcast interface presents the phenomenon of blank screen.Technical scheme of the present invention can realize that the server end play list file is the server end playlist with media content of different coding parameter, streaming media server can be according to a plurality of media contents of listed files played in order of server end appointment, and do not need playing request message mutual repeatedly, the information interactive process in the implementation procedure is fairly simple.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a flow chart of realizing the method for server end playlist in the prior art;
Fig. 2 is the flow chart of the method for the described realization server end of embodiment of the invention playlist;
Fig. 3 is the flow chart of the method for the described improved realization server end playlist of the embodiment of the invention;
Fig. 4 is the structure chart of the server of the described realization server end of embodiment of the invention playlist;
Fig. 5 is the structure chart of the server of the described improved realization server end playlist of the embodiment of the invention;
Fig. 6 is the structure chart of the system of the described realization server end of embodiment of the invention playlist.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention provides a kind of method that realizes the server end playlist, as shown in Figure 2, comprises the steps:
201, streaming media server detect next in the playlist need be to the coding parameter of the media content of terminal plays.
202, need be when the described next one to the coding parameter of the media content of terminal plays with not simultaneously to the coding parameter of the media content of terminal plays, streaming media server need send to described terminal to the coding parameter of the media content of terminal plays with the described next one.
203, need be to the described next one of terminal plays to the media content of terminal plays.
The method of the described realization server end of present embodiment playlist, streaming media server is in the service process to terminal, detect next need be to the coding parameter of the media content of terminal plays, when the coded message of media content changes, the described next one of streaming media server notice terminal need need be to the initial data bag sign of the media content data of terminal plays to the coded message of the media content of terminal plays and the described next one, and terminal is receiving that the described next one need be after the coded message of the media content of terminal plays, not needing to resend the described next one need be to the playing request message of the media content of terminal plays, and terminal can use the new coded message need be to the broadcast of decoding of the media content of terminal plays to the described next one.Thereby terminal can not upgraded because of the coding parameter of media content data, and decoding error occurs, and broadcast interface presents the phenomenon of blank screen.Technical scheme of the present invention can realize that the server end play list file is the server end playlist with media content of different coding parameter, streaming media server can be according to a plurality of media contents of listed files played in order of server end appointment, and the information interactive process in the implementation procedure is fairly simple.
As a kind of improvement of present embodiment, the invention provides the method that another realizes the server end playlist, as shown in Figure 3, comprise the steps:
301, terminal is set up with streaming media server and is linked, and terminal sends the request message of the sign of carrying support renewal media content information to streaming media server.Described message can be OPTIONS.
As: terminal sends Require:update-sdp-with-message-feature.
302, streaming media server is according to self whether supporting that upgrading media content information replys response message 200OK.
When media information is upgraded in the streaming media server support, send and carry the response message 200OK that the sign of media content information is upgraded in the streaming media server support.Execution in step 303.
When streaming media server is not supported to upgrade media information, send and carry the response message 200OK that streaming media server does not upgrade the sign of media content information.Flow process finishes.As: streaming media server transmission Unsupported:update-sdp-with-message-feature can identify and not support to upgrade media content information.
The mode of step 301,302 described renewal media content information can be following dual mode:
The first, use signalling path to upgrade media content information.
When using signalling path to upgrade media content information, when the coding parameter of media content changed, streaming media server was by sending the mode of signaling message, the coded format of the media content that the notice terminal is new.
The second, use the data channel update media content information.
When using the data channel update media content information, when the coding parameter of media content changed, streaming media server was by sending the mode of packet, the coded format of the media content that the notice terminal is new.
303, terminal sends the message of describing terminal capability to streaming media server.Information such as the media content type of coding that can support such as terminal, code check.
In message described in the RTSP (real-time Transmission stream media protocol) can be ANNOUNCE message, can use the INFO notice in message described in the SIP (conversation initialized protocol).Present embodiment is an example with ANNOUNCE message, and described ANNOUNCE message can be carried SDP (Session Description Protocol) information and other service ability information, describes terminal capability in the SDP information, the media coding type that can support as terminal, code check etc.
304, after the ANNOUNCE message of the description terminal capability that receives the terminal transmission, streaming media server writes down the terminal ability information of describing among the described ANNOUNCE.As the foundation of streaming media server selection to the terminal plays media content.
Each media content in the streaming media server can be preserved the version of a plurality of different coding parameters, saves as simultaneously H.264 or the version of two coded formats H.263 such as file 1.The version that a plurality of different accuracies can also be arranged is preserved size such as file 1 and is 1M, 200Kbps, three versions of 3M.When middle-end sends file 1, the version that coding parameter that streaming media server can be supported according to terminal and code check are selected to respond sends.Support simultaneously H.264 or two coded formats H.263 that such as terminal code check is 2.5M, then streaming media server can be selected 3M, H.264 the file 1 of coding parameter is given terminal, and result of broadcast is relatively good.
When streaming media server find the coded format of certain media file be terminal can not support coded format the time, server can also be converted to the coded format of described media file a kind of coded format that terminal can be supported so, then described media content data is sent to terminal.
Streaming media server inspection and renewal media content are not limited to video code model and code check, can influence the parameter of terminal playing effect for all, and streaming media server can be checked and it be upgraded.
In information interactive process, terminal and streaming media server have carried out upgrading the negotiation of media content information ability, streaming media server has got access to the service ability such as decoding of terminal, like this in service process to terminal, when the coded message of media data changes, streaming media server can be when program switches need need be to the initial data bag sign of the media content data of terminal plays by message or the special described next one of packet notice terminal to the coded message of the media content of terminal plays and the described next one, terminal can use new coded message need decode to the media content of terminal plays to the described next one, can not upgrade because of the coding parameter of media content data, and decoding error appears, broadcast interface presents the phenomenon of blank screen.
Streaming media server has got access to the service ability of terminal in information interactive process, so when the media content code check does not match with the code check of terminal, it is that terminal is served that streaming media server also can be chosen suitable code check, thereby improves terminal use's result of broadcast.
305, streaming media server sends acknowledge message 200OK to terminal.
306, terminal sends the request of describing media content to streaming media server.Described request can be a DESCRIBE message.
307, streaming media server is according to the play rules of playlist, and structure is replied the message of terminal.Described message can be SDP information, carries whole duration informations of media content in the coding parameter of described media content and the playlist in described SDP information.
308, streaming media server is replied terminal response message 200OK, and carries the SDP information that contains whole duration informations of media content in media content coding parameter and the playlist.Suppose that the video code model that streaming media server carries is H263 in SDP information.
In the response message of DESCRIBE, what streaming media server was replied is the duration information of whole list content, and the coded message of first media content.Terminal does not need to discern that streaming media server plays is a playlist content, only need carry out data decode according to different coded messages.What terminal received is the playing duration of whole playlist content, so just can position in the reproduction time scope of whole playlist content, F.F., rewind down, time-out, play operation.
309, terminal sends the request of setting up the media data sendaisle.Described request can be a SETUP message.
3010, streaming media server notice terminal is set up the success of media data sendaisle.
3011, terminal sends playing request to streaming media server, request beginning playing media content.Described request can be a PLAY message.
3012, streaming media server notice terminal plays success.
3013, the media content of streaming media server in the described playlist of terminal plays.
3014, the coded format of supposing first media content video data is H263, and terminal can be showed media content by normal decoder.
3015, streaming media server detect next in the playlist need be to the coding parameter of the media content of terminal plays.When the described next one need carry out 3016 to the coding parameter of the media content of terminal plays with to the coding parameter of the media content of terminal plays not simultaneously; When the described next one need carry out 3018 to the coding parameter of the media content of terminal plays with when the coding parameter of the media content of terminal plays is identical.
3016, when terminal and streaming media server are all supported to upgrade media content information, streaming media server need send to described terminal to the coding parameter of the media content of terminal plays with the described next one.
The video code model of supposing new media content is MP4V, and streaming media server just sends to terminal with coded format MP4V.Receive for the ease of terminal that can to identify after the data be that the described next one need be to the media data of the media content of terminal plays, can also need together send to terminal to the described next one to sequence number, the timestamp of the RTP bag of the media content of terminal plays.
The described mode that the described next one need be sent to described terminal to the coding parameter of the media content of terminal plays of this step can be following dual mode:
The first, when terminal and streaming media server all supported to use signalling path to upgrade media content information, streaming media server need send to described terminal by sending signaling message to the coding parameter of the media content of terminal plays with the described next one.
Send the media coding parameter by the mode that sends signaling message, the request that needs terminal could send described signaling message, is suitable for the situation of clean culture.
The second, when terminal and streaming media server were all supported to use the data channel update media content information, streaming media server need send to described terminal by sending packet to the coding parameter of the media content of terminal plays with the described next one.
Send the media coding parameter by the mode that sends packet, can not need the request of terminal also can send, be suitable for the situation of multicast.
For server end playlist arranging system, because having mechanism notice terminal, streaming media server upgrades media data encoding information, server end playlist arranging system does not just need to be concerned about the coding parameter of media content in the playlist so, directly carrying out layout gets final product, server end playlist arranging system also need not carry out different codings at same media content and satisfy business demand, thereby can save the disk storage space of system.
When one or both ends were not supported to upgrade media content information in middle-end and the streaming media server, flow process finished.
3017, after first media content was play and finished, streaming media server was according to playlist switching media content.
3018, streaming media server need be to the media content of terminal plays to the described next one of terminal plays.
For server end playlist arranging system, if the coding parameter of the media content in the described playlist is all identical, server end playlist arranging system does not just need to be concerned about the coding parameter of media content in the playlist so, directly carrying out layout gets final product, server end playlist arranging system also need not carry out different codings at same media content and satisfy business demand, thereby can save the disk storage space of system more.
3019, terminal receive play message after, stream of reply media server 200OK message.
3020, terminal is decoded to the coding parameter of the media content of terminal plays according to described next needs and is play the media content of described next needs to terminal plays.
The method of the realization server end playlist that present embodiment provides, in information interactive process, terminal and streaming media server have carried out upgrading the negotiation of media content information ability, streaming media server has got access to the decoding and the support of terminal and has upgraded service ability such as media content information, like this in service process to terminal, when the coded message of media data changes, streaming media server can be when program switches need need be to the initial data bag sign of the media content data of terminal plays by message or the special described next one of packet notice terminal to the coded message of the media content of terminal plays and the described next one, and terminal is receiving that the described next one need be after the coded message of the media content of terminal plays, do not need to resend the playing request message of new media content, terminal can use the new coded message need be to the broadcast of decoding of the media content of terminal plays to the described next one.Thereby terminal can not upgraded because of the coding parameter of media content data, and decoding error occurs, and broadcast interface presents the phenomenon of blank screen.
Streaming media server has got access to the service ability of terminal in information interactive process, so when the media content code check does not match with the code check of terminal, it is that terminal is served that streaming media server also can be chosen suitable code check, thereby improves terminal use's result of broadcast.
Streaming media server can detect in the playlist next need be to the coding parameter of the media content of terminal plays; When the described next one need be to the coding parameter of the media content of terminal plays with terminal to the coding parameter of the media content of terminal plays not simultaneously, need be before the media content of terminal plays to the described next one of terminal plays, streaming media server sends the described next one to terminal need be to the coding parameter of the media content of terminal plays, terminal receives the described next one need be behind the coding parameter of the media content of terminal plays, need decode the described next one to the coding parameter of the media content of terminal plays according to the described next one need be to the media content of terminal plays, shows that the described next one need be to the picture of the media content of terminal plays.Technical scheme of the present invention can realize that listing file is the server end playlist with media content of different coding parameter, streaming media server can be according to a plurality of media contents of listed files played in order of server end appointment, and the information interactive process in the implementation procedure is fairly simple.
The embodiment of the invention provides a kind of server of realizing the server end playlist, as shown in Figure 4, comprising: detecting unit 41, transmitting element 42.
Described detecting unit 41 detect next in the playlists need be to the coding parameter of the media content of terminal plays.When the described next one need be to the coding parameter of the media content of terminal plays with to the coding parameter of the media content of terminal plays not simultaneously, need be before the media content of terminal plays to the described next one of terminal plays, described transmitting element 42 need send to described terminal to the coding parameter of the media content of terminal plays with the described next one.
The server of the described realization server end of present embodiment playlist, streaming media server is in the service process to terminal, described detecting unit detect next need be to the coding parameter of the media content of terminal plays, when the coded message of media content changes, the described next one of the transmitting element of streaming media server notice terminal need need be to the initial data bag sign of the media content data of terminal plays to the coded message of the media content of terminal plays and the described next one, and terminal is receiving that the described next one need be after the coded message of the media content of terminal plays, do not need to resend the playing request message of new media content, terminal can use the new coded message need be to the broadcast of decoding of the media content of terminal plays to the described next one.Thereby terminal can not upgraded because of the coding parameter of media content data, and decoding error occurs, and broadcast interface presents the phenomenon of blank screen.Technical scheme of the present invention can realize that the server end play list file is the server end playlist with media content of different coding parameter, streaming media server can be according to a plurality of media contents of listed files played in order of server end appointment, and the information interactive process in the implementation procedure is fairly simple.
As a kind of improvement of present embodiment, the invention provides the another kind of server of realizing the server end playlist, as shown in Figure 5, comprising: receiving element 51, record cell 52, detecting unit 53, transmitting element 54.
Whether described transmitting element 54 supports that according to streaming media server upgrading media content information sends response message to terminal.When media content information was upgraded in the streaming media server support, described transmitting element 54 sent and carries the response message that the sign of media content information is upgraded in the streaming media server support.When streaming media server was not supported to upgrade media content information, described transmitting element 54 sent and carries the response message that streaming media server does not support to upgrade the sign of media content information.Send out the message of description terminal capability in terminal after, the request message of the description terminal capability that described receiving element 51 receiving terminals send, the terminal ability information of describing in the described message of described record cell 52 records is as the foundation of streaming media server selection to the terminal plays media content.Described transmitting element 54 sends acknowledge message to terminal.Send out the request of description media content in terminal after.Streaming media server is according to the play rules of playlist, and structure is replied the message of terminal.Described message can be SDP information, and carries whole duration informations of media content in the coding parameter of described media content and the playlist in described SDP information.Described transmitting element 54 sends the SDP information of carrying the whole duration informations that contain media content in media content coding parameter and the playlist to terminal.After the request of media data sendaisle was set up in the terminal transmission, described transmitting element 44 sent the notice terminals and sets up the message of media data sendaisle success.Send playing request in terminal to streaming media server, after the request beginning playing media content, described transmitting element 54 sends plays successful message to terminal.The media content of described transmitting element 54 in the described playlist of terminal plays.The coded format of supposing first media content video data is H263, and terminal can be showed media content by normal decoder.
Described detecting unit 53 detect next in the playlists need be to the coding parameter of the media content of terminal plays.When the described next one need be to the coding parameter of the media content of terminal plays with to the coding parameter of the media content of terminal plays not simultaneously, described transmitting element 54 need send to described terminal to the coding parameter of the media content of terminal plays with the described next one.Receive for the ease of terminal that can to identify after the data be that the described next one need be to the media data of the media content of terminal plays, can also need together send to terminal to the described next one to sequence number, the timestamp of the RTP bag of the media content of terminal plays.After first media content was play end, streaming media server was according to playlist switching media content.Described transmitting element 54 need be to the media content of terminal plays to the described next one of terminal plays.Terminal is decoded to the coding parameter of the media content of terminal plays according to described next needs and is play the media content of described next needs to terminal plays.
When the described next one need be to the coding parameter of the media content of terminal plays with when the coding parameter of the media content of terminal plays be identical, described transmitting element 54 need be to the media content of terminal plays to the described next one of terminal plays.Terminal is decoded the described next one of broadcast according to original coding parameter need be to the media content of terminal plays.
The device of the realization server end playlist that present embodiment provides, in information interactive process, terminal and streaming media server have carried out upgrading the negotiation of media content information ability, streaming media server has got access to the decoding and the support of terminal and has upgraded service ability such as media content information, like this in service process to terminal, when the coded message of media data changes, streaming media server can be when program switches need need be to the initial data bag sign of the media content data of terminal plays by message or the special described next one of packet notice terminal to the coded message of the media content of terminal plays and the described next one, and terminal is receiving that the described next one need be after the coded message of the media content of terminal plays, do not need to resend the playing request message of new media content, terminal can use the new coded message need be to the broadcast of decoding of the media content of terminal plays to the described next one.Thereby terminal can not upgraded because of the coding parameter of media content data, and decoding error occurs, and broadcast interface presents the phenomenon of blank screen.
Streaming media server has got access to the service ability of terminal in information interactive process, so when the media content code check does not match with the code check of terminal, it is that terminal is served that streaming media server also can be chosen suitable code check, thereby improves terminal use's result of broadcast.
Streaming media server can detect in the playlist next need be to the coding parameter of the media content of terminal plays; When the described next one need be to the coding parameter of the media content of terminal plays with terminal to the coding parameter of the media content of terminal plays not simultaneously, need be before the media content of terminal plays to the described next one of terminal plays, streaming media server sends the described next one to terminal need be to the coding parameter of the media content of terminal plays, terminal receives the described next one need be behind the coding parameter of the media content of terminal plays, need decode the described next one to the coding parameter of the media content of terminal plays according to the described next one need be to the media content of terminal plays, shows that the described next one need be to the picture of the media content of terminal plays.Technical scheme of the present invention can realize that listing file is the server end playlist with media content of different coding parameter, streaming media server can be according to a plurality of media contents of listed files played in order of server end appointment, and the information interactive process in the implementation procedure is fairly simple.
The embodiment of the invention provides a kind of system that realizes the server end playlist, as shown in Figure 6, comprising: streaming media server 61, terminal 62.
Streaming media server 61 detects the coding parameter of the next media content that need play to terminal 62 in the playlists; The coding parameter of the coding parameter of the media content that need play to terminal 62 when the described next one and the media content of playing to terminal 62 is not simultaneously, play the described next one to terminal 62 need be before the media content that terminal 62 is play, described streaming media server 61 sends to described terminal 62 with the coding parameter of the media content that the described next one need be play to terminal 52.Terminal 62 receives the coding parameter of the media content that the described next one need play to terminal 62, and the media content of playing to terminal 62 according to the described next needs of the coding parameter information decoding that receives.
The system of the described realization server end of present embodiment playlist, streaming media server is in the service process to terminal, detect next need be to the coding parameter of the media content of terminal plays, when the coded message of media content changes, the described next one of streaming media server notice terminal need need be to the initial data bag sign of the media content data of terminal plays to the coded message of the media content of terminal plays and the described next one, and terminal is receiving that the described next one need be after the coded message of the media content of terminal plays, do not need to resend the playing request message of new media content, terminal can use the new coded message need be to the broadcast of decoding of the media content of terminal plays to the described next one.Thereby terminal can not upgraded because of the coding parameter of media content data, and decoding error occurs, and broadcast interface presents the phenomenon of blank screen.Technical scheme of the present invention can realize that the server end play list file is the server end playlist with media content of different coding parameter, streaming media server can be according to a plurality of media contents of listed files played in order of server end appointment, and the information interactive process in the implementation procedure is fairly simple.
As a kind of improvement of present embodiment, the embodiment of the invention provides the another kind of system that realizes the server end playlist, comprising: streaming media server, terminal.
The media content type of coding of described streaming media server reception description terminal support, the information of code check also write down the media content type of coding of described terminal support, the information of code check.Streaming media server is complementary to media content type of coding, the code check of type of coding, code check and the described terminal support of the media content of terminal plays.The request of described streaming media server receiving terminal is described the message of whole duration informations of all media contents in the coding parameter information of first media content in the described playlist of information and sending of media content in the playlist and the described playlist and is given terminal.Described streaming media server detect next in the playlist need be to the coding parameter of the media content of terminal plays, when the described next one need be to the coding parameter of the media content of terminal plays with to the coding parameter of the media content of terminal plays not simultaneously, need be before the media content of terminal plays to the described next one of terminal plays, described streaming media server need send to described terminal by sending signaling message to the coding parameter of the media content of terminal plays with the described next one; Perhaps described streaming media server need send to described terminal by sending packet to the coding parameter of the media content of terminal plays with the described next one.Terminal receives the described next one need be to the coding parameter of the media content of terminal plays, and according to the media content of the described next needs of the coding parameter information decoding that receives to terminal plays.When described streaming media server detects the described next one need be to the coding parameter of the media content of terminal plays with when the coding parameter of the media content of terminal plays be identical, described streaming media server need be to the media content of terminal plays to the described next one of terminal plays intact behind the media content of terminal plays to terminal plays.
The system of the realization server end playlist that present embodiment provides, in information interactive process, streaming media server has got access to the decoding and the support of terminal and has upgraded service ability such as media content information, like this in service process to terminal, when the coded message of media data changes, streaming media server can be when program switches need need be to the initial data bag sign of the media content data of terminal plays by message or the special described next one of packet notice terminal to the coded message of the media content of terminal plays and the described next one, and terminal is receiving that the described next one need be after the coded message of the media content of terminal plays, do not need to resend the playing request message of new media content, terminal can use the new coded message need be to the broadcast of decoding of the media content of terminal plays to the described next one.Thereby terminal can not upgraded because of the coding parameter of media content data, and decoding error occurs, and broadcast interface presents the phenomenon of blank screen.
Streaming media server has got access to the service ability of terminal in information interactive process, so when the media content code check does not match with the code check of terminal, it is that terminal is served that streaming media server also can be chosen suitable code check, thereby improves terminal use's result of broadcast.
Streaming media server can detect in the playlist next need be to the coding parameter of the media content of terminal plays; When the described next one need be to the coding parameter of the media content of terminal plays with terminal to the coding parameter of the media content of terminal plays not simultaneously, need be before the media content of terminal plays to the described next one of terminal plays, streaming media server sends the described next one to terminal need be to the coding parameter of the media content of terminal plays, terminal receives the described next one need be behind the coding parameter of the media content of terminal plays, need decode the described next one to the coding parameter of the media content of terminal plays according to the described next one need be to the media content of terminal plays, shows that the described next one need be to the picture of the media content of terminal plays.Technical scheme of the present invention can realize that listing file is the server end playlist with media content of different coding parameter, streaming media server can be according to a plurality of media contents of listed files played in order of server end appointment, and the information interactive process in the implementation procedure is fairly simple.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection range with claim.
Claims (17)
1. a method that realizes the server end playlist is characterized in that, comprising:
Detect next in the playlist need be to the coding parameter of the media content of terminal plays;
When the described next one need be to the coding parameter of the media content of terminal plays with to the coding parameter of the media content of terminal plays not simultaneously, need be before the media content of terminal plays, the described next one need be sent to described terminal to the coding parameter of the media content of terminal plays to the described next one of terminal plays.
2. the method for realization server end playlist according to claim 1, it is characterized in that, describedly the described next one need be sent to described terminal to the coding parameter of the media content of terminal plays be: the described next one need be sent to described terminal to the coding parameter of the media content of terminal plays by sending signaling message; Perhaps
By sending packet the described next one need be sent to described terminal to the coding parameter of the media content of terminal plays.
3. the method for realization server end playlist according to claim 1 is characterized in that, next in detecting playlist need be before the coding parameter of the media content of terminal plays, described method also comprises:
The message of media content is described in the receiving terminal request;
Send the message of whole duration informations of all media contents in the coding parameter information of first media content in the described playlist and the described playlist.
4. the method for realization server end playlist according to claim 3 is characterized in that, describes in the receiving terminal request before the message of media content, and described method also comprises:
Receive the media content type of coding of describing terminal and supporting, the information of code check;
Write down the media content type of coding of described terminal support, the information of code check;
Media content type of coding, code check to type of coding, code check and the described terminal support of the media content of terminal plays are complementary.
5. the method for realization server end playlist according to claim 3 is characterized in that, describes in the receiving terminal request before the message of media content, and described method also comprises:
The request message of the sign of media content information is upgraded in the support that receiving terminal sends;
Send the streaming media server support and upgrade the response message of the sign of media content information.
6. the method for realization server end playlist according to claim 5 is characterized in that, being designated of described renewal media content information: use signalling path to upgrade the sign of media content information; Perhaps
Use the sign of data channel update media content information.
7. the method for realization server end playlist according to claim 1, it is characterized in that, when the described next one need be to the coding parameter of the media content of terminal plays with when the coding parameter of the media content of terminal plays be identical, intact behind the media content of terminal plays to terminal plays, need be to the described next one of terminal plays to the media content of terminal plays.
8. a server of realizing the server end playlist is characterized in that, comprising:
Detecting unit, be used for detecting playlist is next need be to the coding parameter of the media content of terminal plays;
Transmitting element, be used for when the described next one need be to the coding parameter of the media content of terminal plays with not simultaneously to the coding parameter of the media content of terminal plays, need be before the media content of terminal plays, the described next one need be sent to described terminal to the coding parameter of the media content of terminal plays to the described next one of terminal plays.
9. the server of realization server end playlist according to claim 8, it is characterized in that described transmitting element need send to described terminal to the coding parameter of the media content of terminal plays with the described next one and be: transmitting element need send to described terminal by sending signaling message to the coding parameter of the media content of terminal plays with the described next one; Perhaps
Transmitting element need send to described terminal by sending packet to the coding parameter of the media content of terminal plays with the described next one.
10. the server of realization server end playlist according to claim 7 is characterized in that, described server also comprises:
Receiving element is used for the message that media content is described in the receiving terminal request;
Described transmitting element also is used for sending the message of whole duration informations of all media contents in the coding parameter information of described first media content of playlist and the described playlist.
11. the server of realization server end playlist according to claim 10 is characterized in that, described server also comprises:
Record cell is used to write down the media content type of coding of described terminal support, the information of code check;
Described receiving element also is used to receive the media coding type of describing terminal and supporting, the information of code check;
Streaming media server is complementary to media content type of coding, the code check of the terminal support of type of coding, code check and the described recording unit records of the media content of terminal plays.
12. the server of realization server end playlist according to claim 10 is characterized in that,
Described receiving element also is used to receive the request message that the sign of media content information is upgraded in the carried terminal support;
Described transmitting element also is used to send the response message of the sign of carrying streaming media server support renewal media content information.
13. a system that realizes the server end playlist is characterized in that, comprising:
Streaming media server, be used for detecting playlist is next need be to the coding parameter of the media content of terminal plays; When the described next one need be to the coding parameter of the media content of terminal plays with to the coding parameter of the media content of terminal plays not simultaneously, need be before the media content of terminal plays, the described next one need be sent to described terminal to the coding parameter of the media content of terminal plays to the described next one of terminal plays;
Terminal, being used to receive the described next one need be to the coding parameter of the media content of terminal plays, and according to the media content of the described next needs of the coding parameter information decoding that receives to terminal plays.
14. the system of realization server end playlist according to claim 13, it is characterized in that described streaming media server need send to described terminal to the coding parameter of the media content of terminal plays with the described next one and be: streaming media server need send to described terminal by sending signaling message to the coding parameter of the media content of terminal plays with the described next one; Perhaps
Streaming media server need send to described terminal by sending packet to the coding parameter of the media content of terminal plays with the described next one.
15. the system of realization server end playlist according to claim 13, it is characterized in that, described streaming media server also be used for detect that playlist is next need be before the coding parameter of the media content of terminal plays, the receiving terminal request is described the message of media content and is sent the message of whole duration informations of all media contents in the coding parameter information of first media content in the described playlist and the described playlist to terminal.
16. the system of realization server end playlist according to claim 14, it is characterized in that, described streaming media server also was used for before the message of media content is described in the receiving terminal request, and the media content type of coding of reception description terminal support, the information of code check also write down the media content type of coding of described terminal support, the information of code check;
Described streaming media server is complementary to media content type of coding, the code check of type of coding, code check and the described terminal support of the media content of terminal plays.
17. the system of realization server end playlist according to claim 13, it is characterized in that, when described streaming media server detects the described next one need be to the coding parameter of the media content of terminal plays with when the coding parameter of the media content of terminal plays be identical, described streaming media server need be to the media content of terminal plays to the described next one of terminal plays intact behind the media content of terminal plays to terminal plays.
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