CN102843351A - Streaming media service processing method, streaming media server and system - Google Patents
Streaming media service processing method, streaming media server and system Download PDFInfo
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Abstract
The invention discloses a streaming media service processing method, a streaming media server and a system, which are used for solving the problem of failure in dynamic code rate regulation on the code rate of a transmitted media file according to the bandwidth of the link in the media file transmission process. A communication system comprises a user terminal device and a streaming media server. The user terminal device is used for initiating a request for obtaining the streaming media file, and receiving and playing the slice data returned back by the streaming media server; the streaming media server is used for obtaining the bandwidth of the current link associated with the request for obtaining the streaming media file of the user terminal, wherein the bandwidth is indicated by a bandwidth value; corresponding slice data in the matched streaming media file are obtained from multiple streaming media files which are corresponding to the request and have different code rates, wherein the corresponding code rate of the streaming media file is matched with the bandwidth value; and the slice data are returned back to the user terminal, wherein the corresponding code rate of the streaming media file is matched with the bandwidth value.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of processing method, streaming media server and system of streaming media service.
Background technology
Along with the continuous development of 3G (3rd-generation, 3G (Third Generation) Moblie technology) technology, the continuous maturation of network technology, the user also increases substantially to the demand of streaming media service.At present, most streaming media service all are based on the streaming media service that HTTP (Hyper Text Transfer Protocol, HTTP) carries.
In the streaming media service that carries based on HTTP; Progressive Download (progressive download) is the main flow scheme; Be directly to pass through http protocol downloads of media file, or through the mode of playing while downloading the fluidisation service be provided, the said mode of playing while downloading is that media file is constantly sent to playback terminal; Playback terminal obtains the contents of media files that a part can be play, and just carries out media play.This mode makes period of reservation of number less, and still, the required media file of user is when beginning to transmit, and code check is just confirmed, can not be adjusted dynamically.Code check is meant the data bits of transmission in the unit interval; Owing to can not adjust code check dynamically, make media file in transmission, no matter be under high bandwidth or low bandwidth; All be with constant code check transmission; Thereby cause the waste of network transmission resource, or cause the deficiency of network transmission resource, influence user experience.
Summary of the invention
Embodiments of the invention provide a kind of processing method, streaming media server and system of streaming media service; Solve to a certain extent in the media file transmission course, the code check of the media file that is transmitted can not carry out the problem that the dynamic code rate adjustment is regulated according to the bandwidth of network.
Embodiments of the invention adopt following technical scheme:
The embodiment of the invention provides a kind of communication system, comprising:
Subscriber terminal equipment, the request that is used to initiate to obtain files in stream media, and receive and slice of data that the playing stream media server returns;
Streaming media server, be used to obtain with the request of obtaining files in stream media of user terminal the bandwidth of related current link, said bandwidth dedicated bandwidth value representation; According to said bandwidth value, from described request a plurality of files in stream media corresponding, different code checks obtain the corresponding slice of data in the files in stream media of coupling, wherein, said files in stream media corresponding code rate and said bandwidth value are complementary; And return said slice of data to said user terminal.
The present invention implements the also routine processing method that a kind of streaming media service is provided, and comprising:
Obtain with the request of obtaining files in stream media of user terminal the bandwidth of related current link, said bandwidth dedicated bandwidth value representation;
According to said bandwidth value, from described request a plurality of files in stream media corresponding, different code checks obtain the corresponding slice of data in the files in stream media of coupling, wherein, said files in stream media corresponding code rate and said bandwidth value are complementary;
Return said slice of data to said user terminal.
The embodiment of the invention provides a kind of streaming media server, comprising:
Acquiring unit, be used to obtain with the request of obtaining files in stream media of user terminal the bandwidth of related current link, said bandwidth dedicated bandwidth value representation;
Processing unit; Be used for according to said bandwidth value; From with described request a plurality of files in stream media corresponding, different code checks obtain the corresponding slice of data in the files in stream media of coupling, wherein, said files in stream media corresponding code rate and said bandwidth value are complementary;
Transmitting element is used for returning said slice of data to said user terminal.
The embodiment of the invention provides a kind of processing method, streaming media server and system of streaming media service; Can obtain the link bandwidth value of user terminal, according to said bandwidth value, from described request a plurality of files in stream media corresponding, different code checks obtain the corresponding slice of data in the files in stream media of coupling; And return to user terminal; Realize the dynamic code rate adjustment of files in stream media in transmission course, improved the Network Transmission utilance, promoted user experience.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the 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 the communication system block diagram of inventive embodiments;
Fig. 2 is the schematic flow sheet of processing method of a kind of streaming media service of inventive embodiments;
Fig. 3 is the schematic flow sheet of processing method of the another kind of streaming media service of inventive embodiments;
Fig. 4 is the structural representation of a kind of streaming media server of inventive embodiments.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, 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 are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The various technology of describing among this paper can be used for various wireless communication systems, for example current 2G, 3G communication system and next generation communication system; Global system for mobile communications (GSM, Global System for Mobile communications) for example, code division multiple access (CDMA; Code Division Multiple Access) system, time division multiple access (TDMA, Time Division Multiple Access) system; WCDMA (WCDMA, Wideband Code Division Multiple Access Wireless), frequency division multiple access (FDMA; Frequency Division Multiple Addressing) system, OFDM (OFDMA, Orthogonal Frequency-Division Multiple Access) system; Single Carrier Frequency Division Multiple Access (SC-FDMA) system, GPRS (GPRS, General Packet Radio Service) system; Long Term Evolution (LTE, Long Term Evolution) system, and other these type of communication systems.
User terminal; Can be that wireless terminal also can be a catv terminal; Wireless terminal can be to point to the equipment that the user provides voice and/or data connectivity, has the portable equipment of wireless connections function or is connected to other treatment facilities of radio modem.Wireless terminal can be through wireless access network (for example; RAN, Radio Access Network) communicate with one or more core net, wireless terminal can be a portable terminal; Like mobile phone (or being called " honeycomb " phone) with have the computer of portable terminal; For example, can be portable, pocket, hand-hold type, built-in computer or vehicle-mounted mobile device, they exchange language and/or data with wireless access network.For example, PCS (PCS, Personal Communication Service) phone, personal digital assistant equipment such as (PDA, Personal Digital Assistant).Wireless terminal also can be called system, remote terminal (Remote Terminal), access terminal (Access Terminal), user terminal (User Terminal), user agent (User Agent), subscriber equipment (User Device) or subscriber's installation (User Equipment).
Embodiment one
The embodiment of the invention provides a kind of communication system, and is as shown in Figure 1, comprising: subscriber terminal equipment 11 and streaming media server 12.
Said subscriber terminal equipment 11, the request that is used to initiate to obtain files in stream media, and receive and slice of data that the playing stream media server returns.
Need to prove that the Streaming Media in the embodiment of the invention includes but not limited to: video file or video flowing or audio file or audio stream.
When user terminal need carry out online files in stream media broadcast through network, at first initiate to obtain the files in stream media request to streaming media server, the request streaming media server returns the files in stream media of being asked.
In embodiments of the present invention, store a plurality of files in stream media of a large amount of different code checks in the said streaming media server, and said each files in stream media has one or more slice of datas, said slice of data is for waiting continuous data of duration.When streaming media server gets access to the request of files in stream media of user terminal, periodically selected slice of data is returned user terminal.The slice of data that user terminal also is used to receive and the playing stream media server returns.
Streaming media server 12, be used to obtain with the request of obtaining files in stream media of user terminal the bandwidth of related current link, said bandwidth dedicated bandwidth value representation; According to said bandwidth value, from described request a plurality of files in stream media corresponding, different code checks obtain the corresponding slice of data in the files in stream media of coupling, wherein, said files in stream media corresponding code rate and said bandwidth value are complementary; And return said slice of data to said user terminal.
So-called link is one section physical circuit from a node to adjacent node.In embodiments of the present invention; User terminal sends the request of obtaining files in stream media and arrives streaming media server; So that set up TCP (Transmission Control Protocol between user terminal and streaming media server; Transmission control protocol) connect, promptly set up the request of obtaining files in stream media between user terminal and the streaming media server related link.
Bandwidth refers to transmitted data on network certain from network a bit can be passed through to another point in the unit interval " the maximum data rate ", i.e. how many positions (bit/s) of per second transmission.Therefore, bandwidth is big more, and it is big more to flow to the data volume of the other end from an end at the appointed time, and promptly data transmission rate is fast more.The network bandwidth has influenced the transmission rate of data or file.But because the variation of network environment, the spendable bandwidth of user terminal changes, therefore; Before carrying out files in stream media transmission, detect earlier obtain the files in stream media request the bandwidth of related current link, obtain user's current bandwidth value; And according to send the slice of data that matees with said bandwidth value according to said bandwidth value; To improve utilization of network bandwidth, guarantee the playing fluency of files in stream media, and then promoted user experience.
In the communication system provided by the invention, under a kind of implementation, streaming media server 12 specifically is used for: obtain with the request of obtaining files in stream media of user terminal the bandwidth of related current link, said bandwidth dedicated bandwidth value representation; And according to the files in stream media sign of carrying in said bandwidth value and the described request; From description document, search the Streaming Media section attribute information of coupling; Wherein, Said Streaming Media section attribute information is corresponding with said files in stream media sign, and related code rate information and the said bandwidth value of said Streaming Media section attribute information is complementary; And according to said Streaming Media section attribute information; Obtain and return corresponding slice of data to said user terminal, said Streaming Media section attribute information comprises zero-time, concluding time and the storage address of each slice of data that said files in stream media comprises.
Further, said communication system also comprises bandwidth detection equipment 13, be used to detect subscriber terminal equipment the request of obtaining files in stream media the bandwidth of related current link, said bandwidth is represented with first bandwidth value;
At this moment; Streaming media server 12 specifically is used for: the files in stream media sign of carrying according to said first bandwidth value and described request; From description document, search the Streaming Media section attribute information of coupling; Wherein, Said Streaming Media section attribute information is corresponding with said files in stream media sign, and related code rate information and said first bandwidth value of said Streaming Media section attribute information be complementary, and the said Streaming Media attribute information of cutting into slices comprises zero-time, concluding time and the storage address of each slice of data that said files in stream media comprises; And, obtain and return the first corresponding slice of data to user terminal according to the storage address of the slice of data of zero-time ascending sort first.
In addition; Bandwidth detection equipment 13 also is used for when the request of obtaining files in stream media of receiving that user terminal sends, and after returning said first slice of data; With the first threshold time interval; Periodically detect the related current link bandwidth of described request, perhaps periodically the bandwidth on demand checkout equipment detects and provides the bandwidth of the related current link of described request, and said bandwidth is represented with second bandwidth value;
At this moment; Streaming media server 12 specifically is used for: the files in stream media sign of carrying according to said second bandwidth value and described request; From description document, search the Streaming Media section attribute information of coupling; Wherein, Said Streaming Media section attribute information is corresponding with said files in stream media sign, and related code rate information and said second bandwidth value of said Streaming Media section attribute information be complementary, and the said Streaming Media attribute information of cutting into slices comprises zero-time, concluding time and the storage address of each slice of data that said files in stream media comprises; And, obtain and return corresponding next slice of data to user terminal according to the storage address of the zero-time slice of data identical or continuous with the concluding time of said first slice of data or a last slice of data.
The next slice of data here can be second slice of data, the 3rd slice of data ... N slice of data or the like.
Need to prove; When bandwidth detection equipment 13 is periodic detect subscriber terminal equipments the request of obtaining files in stream media during the bandwidth of related current link; Different said bandwidth value can be identical constantly, so said streaming media server 12 returns corresponding first slice of data and second slice of data to user terminal; The 3rd slice of data; ... the code check of N slice of data can be identical, and still, the zero-time of second slice of data is identical or continuous with the necessary time of the end of said first slice of data; The zero-time of the 3rd slice of data is identical or continuous with the necessary time of the end of said second slice of data ... the zero-time of N slice of data is identical or continuous with the necessary time of the end of said N-1 slice of data.
Further, said communication system also comprises: transcoding equipment 14,
Be used for the replication stream media file, generate the first-class media file copy and the second media file copy;
The said first-class media file copy and the second files in stream media copy are carried out transcoding respectively, generate files in stream media copy with first code check and files in stream media copy with second code check;
Said files in stream media copy with first code check is cut into slices with the files in stream media copy with second code check, generate the slice of data of several durations such as grade.
It is thus clear that the embodiment of the invention provides a kind of communication system, can the link bandwidth of user terminal be detected; Send through the slice of data after transcoding and the section according to link bandwidth; And carry out to carry out the selection of bandwidth detection and slice of data before the slice of data at every turn, realized the dynamic code rate adjustment of streaming media service, all promoting to some extent of user terminal, streaming media server etc.; Concrete
1) with regard to user terminal, code check is adjusted according to Bandwidth Dynamic, under the low bandwidth situation; Can guarantee media file fluency, when bandwidth is sufficient, can promote Streaming Media (like audio or video) quality; Thereby having promoted the client streaming media playing experiences; In addition, in prior art, burst of the every broadcast of user terminal all will be initiated a new HTTP request; User terminal only need initiate once to obtain the request (being that whole process only needs a HTTP request) of files in stream media, significantly reducing alternately between user terminal and the streaming media server in the embodiment of the invention.In addition, for conventional art, the user terminal of the embodiment of the invention need not to resolve description document, thus the user terminal of the embodiment of the invention need not the customization, adaptability is stronger.
2) with regard to streaming media server, by the code check of streaming media server adjustment files in stream media, thereby make streaming media server possess the network bandwidth allocation ability, especially under the concurrent situation of height, this characteristic can more effectively be utilized the network bandwidth.
Embodiment two
The embodiment of the invention provides a kind of processing method of streaming media service, is based on while downloading the processing method of the streaming media service in the broadcast mode.Said broadcast mode is that files in stream media is constantly sent to user terminal while downloading, and user terminal just carries out media play after obtaining a part of files in stream media content that can play.In the prior art, after user terminal sent the files in stream media request message, the files in stream media that server transmission user terminal is asked was to user terminal; In case files in stream media begins transmission; No matter be under high link bandwidth or low link bandwidth, files in stream media all is with constant code check transmission, can not adjust; Thereby cause the waste of network transmission resource, or cause the deficiency of network transmission resource.
In order to solve in the files in stream media transmission course; The code check of the files in stream media that is transmitted can not carry out the problem that the dynamic code rate adjustment is regulated according to the bandwidth of network; As shown in Figure 2; The embodiment of the invention provides a kind of processing method of streaming media service, and the executive agent of this method can be a streaming media server, and this method comprises:
S101, obtain with the request of obtaining files in stream media of user terminal the bandwidth of related current link, said bandwidth dedicated bandwidth value representation.
In embodiments of the present invention, user terminal carries out online files in stream media when playing through network, initiates the request of obtaining files in stream media to streaming media server.After streaming media server receives the request of obtaining files in stream media that user terminal initiates, at first, set up TCP with said user terminal and be connected, promptly set up the request of obtaining files in stream media between user terminal and the streaming media server related link.
Then, streaming media server obtain with the request of obtaining files in stream media of user terminal the bandwidth of related current link, said bandwidth dedicated bandwidth value representation.
Bandwidth refers to transmitted data on network certain from network a bit can be passed through to another point in the unit interval " the maximum data rate ", i.e. how many positions (bit/s) of per second transmission.Therefore, bandwidth is big more, and it is big more to flow to the data volume of the other end from an end at the appointed time, and promptly data transmission rate is fast more.The network bandwidth has influenced the transmission rate of data or file.
S102, according to said bandwidth value, from described request a plurality of files in stream media corresponding, different code checks obtain the corresponding slice of data in the files in stream media of coupling, wherein, said files in stream media corresponding code rate and said bandwidth value are complementary.
Said slice of data is that transcoding device for flow media file is handled the data that the back is obtained, and concrete processing procedure comprises:
At first, the replication stream media file generates the first-class media file copy and the second files in stream media copy;
Secondly, the first-class media file copy and the second files in stream media copy are carried out transcoding respectively, generate files in stream media copy with first code check and files in stream media copy with second code check; Wherein, said code check is meant the data bits of transmission in the unit interval.
At last, said files in stream media copy with first code check is cut into slices with the files in stream media copy with second code check, generate the sub-slice of data of several durations such as grade.When carrying out slicing processes, be to cut into slices, for example, can whenever once cut into slices at a distance from ten seconds according to the time.The duration that can guarantee each slice of data like this is all the same.
Preferably, in order to make server that the more accurate slice of data of selecting to be fit to bandwidth arranged, server is all right:
The replication stream media file; Generate the 3rd files in stream media copy and the 4th files in stream media copy; Then said the 3rd files in stream media copy and the 4th files in stream media copy are carried out transcoding respectively, generate files in stream media copy with the 3rd code check and files in stream media copy with the 4th code check;
Again said files in stream media copy with the 3rd code check is cut into slices with the files in stream media copy with the 4th code check, generate the slice of data of several durations such as grade.
It is thus clear that; The files in stream media copy with first code check that generates, the files in stream media copy with second code check, the files in stream media copy that has the files in stream media copy of the 3rd code check and have the 4th code check have different code rate respectively; Therefore; When selecting to be fit to the slice of data of bandwidth, more code rate selection can be arranged according to server.
Said slice of data can be deposited in the streaming media server, also can deposit in the data storage device, when streaming media server needs, can directly obtain and gets final product.
Preferably, in order after transcoding equipment is accomplished transcoding, to generate description document fast for the required slice of data of user terminal coupling.Said description document is used for the attribute of each slice of data is described, and Streaming Media section attribute information comprises: the zero-time of slice of data, concluding time and storage address, and concrete, description document has two kinds of describing modes:
First kind of mode comprises same files in stream media sign, different code rate information in the said description document; And the incidence relation between the various flows media file under the different code checks section attribute information (being zero-time, concluding time and the storage address of each slice of data of comprising of the files in stream media under the different code checks); Exemplary, be that example describes with the video file, the title that is designated video file of said files in stream media; With " film 1 " expression, as shown in table 1:
Table 1
The second way; Relate to a complete description document, comprise in the description document comprising different files in stream media signs, different code rate information; And the incidence relation between the various flows media file under the different code checks section attribute information (being zero-time, concluding time and the storage address of each slice of data of comprising of the files in stream media under the different code checks); Exemplary, be that example describes with the video file, the title that is designated video file of said files in stream media; Represent three different video files respectively with " film 1 ", " film 2 ", " film 3 ", as shown in table 2:
Table 2
Wherein, Said files in stream media sign is used for; Be complementary with the files in stream media sign of carrying in the request of obtaining files in stream media of user terminal, said files in stream media sign is not limited only to the title of files in stream media, can also be the code or the identifier of files in stream media.Exemplary, the files in stream media sign of carrying in the request of obtaining files in stream media of said user terminal can be URL (URL, Uniform Resource Locator) mutually.URL is to the position of the resource that can obtain from the internet and a kind of succinct expression of access method, as long as can locate resource, system just can carry out various operations to resource, like access, renewal, replace and search its attribute.URL is equivalent to the expansion of a filename at network range, so a pointer of any accessible object on the machine that URL is with the internet links to each other.
In the embodiment of the invention; Streaming media server can be according to the files in stream media sign of carrying in said bandwidth value and the described request; From description document, search the Streaming Media section attribute information of coupling, wherein, said Streaming Media section attribute information is corresponding with said files in stream media sign; And related code rate information and the said bandwidth value of said Streaming Media section attribute information is complementary; And, obtaining corresponding slice of data according to said Streaming Media section attribute information, said Streaming Media section attribute information comprises zero-time, concluding time and the storage address of each slice of data that said files in stream media comprises.
Because bandwidth value refers to the figure place (bit/s) that the unit interval can transmit, code check also is meant the data bits (bit/s) of transmission in the unit interval, so can select near bandwidth value but the code check that is not more than is the code check of slice of data to be sent; The code check of files in stream media and quality are directly proportional, and code check is big more, and the quality of media file is high more; But, when carrying out network data transmission, also just high more to the requirement of network; So it is the present invention implements can be according to bandwidth value, selected near bandwidth value but the code check that is not more than said bandwidth value is the code check of slice of data to be sent; In the time of can being implemented in low bandwidth, the slice of data of code check is hanged down in transmission, has guaranteed the fluency of media file; When high bandwidth, transmit the section media file of high code check, improved utilization rate of network resource.
S103, return said slice of data to said user terminal.
Streaming media server can be according to Streaming Media cut into slices zero-time, concluding time and the storage address of each slice of data that said files in stream media in the attribute information comprises; Select the current needed slice of data of user terminal; And this slice of data returned to user terminal, so that user terminal is play.
In embodiments of the present invention; From description document, search the Streaming Media section attribute information of coupling; And return said slice of data according to Streaming Media section attribute information; All accomplished by streaming media server, user terminal only need send the request of once obtaining files in stream media and get final product, can reduce like this between user and the streaming media server alternately.Further, the slice of data that user terminal only needs the playing stream media server to return need not carry out extra searching or resolving, therefore, user terminal need not the playback equipment into customization, and then adaptability is stronger.
Need to prove; Because the bandwidth of current link changes; Unsettled, so the slice of data code check that returns maybe be inequality at every turn, still; Streaming media server must be continuous to the time of the slice of data that user terminal returns, continuous uninterrupted in the time of can guaranteeing files in stream media that user terminal plays like this.
As shown in Figure 3, the embodiment of the invention also provides a kind of processing method of streaming media service, comprising:
S201, user terminal send the request of obtaining files in stream media to streaming media server.
S202, streaming media server bandwidth on demand checkout equipment detect and provide the bandwidth of the related current link of described request, and said bandwidth is represented with first bandwidth value.
Need to prove; Bandwidth detection equipment can be that an independent equipment is connected with streaming media server; Be used to detect subscriber terminal equipment the request of obtaining files in stream media the bandwidth of related current link; Can be the detecting unit that is arranged in the streaming media server also, be used to obtain subscriber terminal equipment the request of obtaining files in stream media the bandwidth of related current link.
S203, bandwidth detection equipment return first bandwidth value to streaming media server.
S204, streaming media server are searched the Streaming Media section attribute information of coupling according to the files in stream media sign of carrying in said first bandwidth value and the described request from description document.
Wherein, Said Streaming Media section attribute information is corresponding with said files in stream media sign; And related code rate information and said first bandwidth value of said Streaming Media section attribute information is complementary, and said Streaming Media section attribute information comprises zero-time, concluding time and the storage address of each slice of data that said files in stream media comprises.
S205, streaming media server be according to the storage address of the slice of data of zero-time ascending sort first, obtains and to the first corresponding slice of data of user terminal.
Streaming media server is according to the zero-time of slice of data; The storage address of the slice of data of the slice of data of selection zero-time ascending sort first; And the storage address according to slice of data obtains the first corresponding slice of data, and said first slice of data is returned user terminal.
S206, user terminal are play said first slice of data.
Should be understood that, after step S206, send a slice of data to user terminal at set intervals.At set intervals, repeating step 207～211 finishes up to files in stream media.
In the embodiment of the invention, when streaming media server behind the first corresponding slice of data of user terminal, also comprise:
S207, streaming media server are with the first threshold time interval; Periodically detect the related current link bandwidth of described request; Perhaps periodically the bandwidth on demand checkout equipment detects and provides the bandwidth of the related current link of described request, and said bandwidth is represented with second bandwidth value.Need to prove that the first threshold time interval here can be provided with according to the practical application scene flexibly, also can in the process of using, change.
S208, bandwidth detection equipment return bandwidth to streaming media server and use second bandwidth value.
S209, streaming media server are searched the Streaming Media section attribute information of coupling according to the files in stream media sign of carrying in said second bandwidth value and the described request from description document.
Wherein, Said Streaming Media section attribute information is corresponding with said files in stream media sign; And related code rate information and said second bandwidth value of said Streaming Media section attribute information is complementary, and said Streaming Media section attribute information comprises zero-time, concluding time and the storage address of each slice of data that said files in stream media comprises.
S210, streaming media server are according to the storage address of the zero-time slice of data identical or continuous with the concluding time of said first slice of data or a last slice of data; Obtain corresponding next slice of data and return corresponding next slice of data (for example second slice of data, the 3rd slice of data ... N slice of data) to user terminal.
S211, user terminal are play said next slice of data.
Need to prove; For example; The code check of first slice of data and second slice of data and link bandwidth coupling, therefore first slice of data can be identical with the code check of second slice of data, also can be inequality; But the zero-time of second slice of data is identical with the concluding time of said first slice of data or continuous.
After user terminal is play said second slice of data; Also can continue with the first threshold time interval; Periodically detect the related current link bandwidth of described request; Perhaps periodically the bandwidth on demand checkout equipment detects and provides the bandwidth of the related current link of described request, and according to the files in stream media sign of carrying in said bandwidth value and the described request, from description document, searches the Streaming Media section attribute information of coupling; And obtain and return the 3rd, the 4th corresponding slice of data or the like to said user terminal according to the Streaming Media section attribute information of coupling, till a complete files in stream media end of transmission.Need to prove that all slice of datas that returned all are the files in stream media of same sign, user terminal only need send the request of once obtaining files in stream media to server, so just can reduce between user terminal and the server alternately.Further; User terminal is play, In the view of the user behind the slice of data that receives the server transmission; Be continuous, a complete files in stream media (like video file), the code check of slice of data that can not should be selection is different and influence the user's viewing effect.Can guarantee the media file normal transmission, and then user terminal can smooth broadcast according to the cut into slices selection transmission of media file of bandwidth value for streaming media server.
Need to prove, in embodiments of the present invention, before the step S201, also comprise S2011.
S2011, transcoding equipment carry out transcoding with files in stream media to be handled, and obtains the one or more slice of datas in the files in stream media of different code checks, and generates corresponding description document.
The description document of the embodiment of the invention can be one or more, should be understood that, if a description document, the incidence relation of wherein describing can be with reference to aforementioned table two; If a plurality of description document, with respect to the files in stream media to different code checks, respectively to a description document should be arranged, the incidence relation of wherein describing can be with reference to aforementioned table one.
Concrete, the first replication stream media file of said transcoding equipment generates the first-class media file copy and the second media file copy;
Then, the said first-class media file copy and the second files in stream media copy are carried out transcoding respectively, generate files in stream media copy with first code check and files in stream media copy with second code check;
At last, said files in stream media copy with first code check is cut into slices with the files in stream media copy with second code check, generate the slice of data of several durations such as grade.
S2012, transcoding equipment send to streaming media server with the slice of data and the description document that generate.
Streaming media server is preserved slice of data that receives and description document, and after streaming media server received the request of obtaining files in stream media that user terminal sends, slice of data searched and got access to streaming media server can according to description document.
But; In embodiments of the present invention, step S2011 and S2012 are the preconditions of step S201～S211, in case slice of data generates; Can directly be obtained by streaming media server, be not that each user terminal sends and obtains the Streaming Media request and all will carry out transcoding process.
It is thus clear that the embodiment of the invention provides a kind of method of dynamic code rate adjustment, can the link bandwidth of user terminal be detected; Send through the slice of data after transcoding and the section according to link bandwidth; And carry out to carry out the selection of bandwidth detection and slice of data before the slice of data at every turn, realized the dynamic code rate adjustment of streaming media service, all promoting to some extent of user terminal, streaming media server etc.; Concrete
1) with regard to user terminal, code check is adjusted according to Bandwidth Dynamic, under the low bandwidth situation; Can guarantee media file fluency, when bandwidth is sufficient, can promote Streaming Media (like audio or video) quality; Thereby having promoted the client streaming media playing experiences; In addition, in prior art, burst of the every broadcast of user terminal all will be initiated a new HTTP request; User terminal only need initiate once to obtain the request (being that whole process only needs a HTTP request) of files in stream media, significantly reducing alternately between user terminal and the streaming media server in the embodiment of the invention.In addition, for conventional art, the user terminal of the embodiment of the invention need not to resolve description document, thus the user terminal of the embodiment of the invention need not the customization, adaptability is stronger.
2) with regard to streaming media server, by the code check of streaming media server adjustment files in stream media, thereby make streaming media server possess the network bandwidth allocation ability, especially under the concurrent situation of height, this characteristic can more effectively be utilized the network bandwidth.
Embodiment three
As shown in Figure 4, the embodiment of the invention provides a kind of streaming media server 400, comprising: acquiring unit 401, processing unit 402 and transmitting element 403, wherein,
Acquiring unit 401, be used to obtain with the request of obtaining files in stream media of user terminal the bandwidth of related current link, said bandwidth dedicated bandwidth value representation;
Transmitting element 403 is used for returning said slice of data to said user terminal.
In the embodiment of the invention, under a kind of implementation, said processing unit 402 specifically is used for:
According to the files in stream media sign of carrying in said bandwidth value and the described request; From description document, search the Streaming Media section attribute information of coupling; Wherein, Said Streaming Media section attribute information is corresponding with said files in stream media sign, and related code rate information and the said bandwidth value of said Streaming Media section attribute information be complementary, and according to the said Streaming Media attribute information of cutting into slices; Obtain corresponding slice of data, said Streaming Media section attribute information comprises zero-time, concluding time and the storage address of each slice of data that said files in stream media comprises.
Should be understood that a complete files in stream media comprises one or more sections, from time shaft; Section can be divided into the head section; Middle slice and tail section should be understood that these sections can be the identical sections of code check; Also can be the different section of code check, specifically decide according to the bandwidth under the practical application scene;
Cut into slices to head; Said acquiring unit 401 specifically is used for: after receiving the request of obtaining files in stream media that user terminal sends; Detect the related current link bandwidth of described request; Perhaps the bandwidth on demand checkout equipment detects and provides the bandwidth of the related current link of described request, and said bandwidth is represented with first bandwidth value.
Said processing unit 402 specifically is used for: the files in stream media sign of carrying according to said first bandwidth value and described request; From description document, search the Streaming Media section attribute information of coupling; Wherein, Said Streaming Media section attribute information is corresponding with said files in stream media sign; And related code rate information and said first bandwidth value of said Streaming Media section attribute information is complementary, and said Streaming Media section attribute information comprises zero-time, concluding time and the storage address of each slice of data that said files in stream media comprises; According to the storage address of the slice of data of zero-time ascending sort first, obtain the first corresponding slice of data.
Said transmitting element 403 specifically is used for: return said first slice of data to said user terminal.
To middle slice or tail section; In embodiments of the present invention, said acquiring unit 401 specifically is used for: when the request of obtaining files in stream media of receiving that user terminal sends, and after returning said first slice of data; With the first threshold time interval; Periodically detect the related current link bandwidth of described request, perhaps periodically the bandwidth on demand checkout equipment detects and provides the bandwidth of the related current link of described request, and said bandwidth is represented with second bandwidth value.
Said processing unit 402 specifically is used for: the files in stream media sign of carrying according to said second bandwidth value and described request; From description document, search the Streaming Media section attribute information of coupling; Wherein, Said Streaming Media section attribute information is corresponding with said files in stream media sign; And related code rate information and said second bandwidth value of said Streaming Media section attribute information is complementary, and said Streaming Media section attribute information comprises zero-time, concluding time and the storage address of each slice of data that said files in stream media comprises; And; Storage address according to the zero-time slice of data identical or continuous with the concluding time of said first slice of data or a last slice of data; Obtain corresponding next slice of data (for example second slice of data, the 3rd slice of data ... N slice of data).
Said transmitting element 403 specifically is used for: return said next slice of data (for example second slice of data, the 3rd slice of data ... N slice of data) to said user terminal.
In the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, do not have the part that details among certain embodiment, can be referring to the associated description of other embodiment.
The embodiment of the invention provides a kind of streaming media server; Can obtain the link bandwidth value of user terminal; Send through the slice of data after transcoding and the section according to bandwidth value, and carry out to carry out the selection of bandwidth detection and slice of data before the slice of data at every turn, realized the dynamic code rate adjustment of files in stream media in transmission course; Improve the Network Transmission utilance, promoted user experience.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be accomplished through the relevant hardware of program command; Aforesaid program can be stored in the computer read/write memory medium; This program the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of said claim.
Claims (13)
1. a communication system is characterized in that, comprising:
Subscriber terminal equipment, the request that is used to initiate to obtain files in stream media, and receive and slice of data that the playing stream media server returns;
Streaming media server, be used to obtain with the request of obtaining files in stream media of user terminal the bandwidth of related current link, said bandwidth dedicated bandwidth value representation; According to said bandwidth value, from described request a plurality of files in stream media corresponding, different code checks obtain the corresponding slice of data in the files in stream media of coupling, wherein, said files in stream media corresponding code rate and said bandwidth value are complementary; And return said slice of data to said user terminal.
2. system according to claim 1 is characterized in that,
Said streaming media service implement body is used for: obtain with the request of obtaining files in stream media of user terminal the bandwidth of related current link, said bandwidth dedicated bandwidth value representation; And according to the files in stream media sign of carrying in said bandwidth value and the described request; From description document, search the Streaming Media section attribute information of coupling; Wherein, Said Streaming Media section attribute information is corresponding with said files in stream media sign, and related code rate information and the said bandwidth value of said Streaming Media section attribute information is complementary; And according to said Streaming Media section attribute information; Obtain and return corresponding slice of data to said user terminal, said Streaming Media section attribute information comprises zero-time, concluding time and the storage address of each slice of data that said files in stream media comprises.
3. system according to claim 2 is characterized in that, further comprises:
Bandwidth detection equipment, be used to detect subscriber terminal equipment the request of obtaining files in stream media the bandwidth of related current link, said bandwidth is represented with first bandwidth value;
Said streaming media service implement body is used for: the files in stream media sign of carrying according to said first bandwidth value and described request; From description document, search the Streaming Media section attribute information of coupling; Wherein, Said Streaming Media section attribute information is corresponding with said files in stream media sign; And related code rate information and said first bandwidth value of said Streaming Media section attribute information is complementary, and said Streaming Media section attribute information comprises zero-time, concluding time and the storage address of each slice of data that said files in stream media comprises; And, obtain and return the first corresponding slice of data to user terminal according to the storage address of the slice of data of zero-time ascending sort first.
4. system according to claim 2 is characterized in that,
Said bandwidth detection equipment; Also be used for when the request of obtaining files in stream media of receiving that user terminal sends; And after returning said first slice of data,, periodically detect the related current link bandwidth of described request with the first threshold time interval; Perhaps periodically the bandwidth on demand checkout equipment detects and provides the bandwidth of the related current link of described request, and said bandwidth is represented with second bandwidth value;
Said streaming media service implement body is used for: the files in stream media sign of carrying according to said second bandwidth value and described request; From description document, search the Streaming Media section attribute information of coupling; Wherein, Said Streaming Media section attribute information is corresponding with said files in stream media sign; And related code rate information and said second bandwidth value of said Streaming Media section attribute information is complementary; Said Streaming Media section attribute information comprises zero-time, concluding time and the storage address of each slice of data that said files in stream media comprises, and according to the storage address of the zero-time slice of data identical or continuous with the concluding time of said first slice of data or a last slice of data, obtains and return to user terminal the next slice of data of correspondence.
5. system according to claim 1 is characterized in that, further comprises:
Transcoding equipment is used for the replication stream media file, generates the first-class media file copy and the second files in stream media copy;
The said first-class media file copy and the second files in stream media copy are carried out transcoding respectively, generate files in stream media copy with first code check and files in stream media copy with second code check;
Said files in stream media copy with first code check is cut into slices with the files in stream media copy with second code check, generate the slice of data of several durations such as grade.
6. the processing method of a streaming media service is characterized in that, comprising:
Obtain with the request of obtaining files in stream media of user terminal the bandwidth of related current link, said bandwidth dedicated bandwidth value representation;
According to said bandwidth value, from described request a plurality of files in stream media corresponding, different code checks obtain the corresponding slice of data in the files in stream media of coupling, wherein, said files in stream media corresponding code rate and said bandwidth value are complementary;
Return said slice of data to said user terminal.
7. method according to claim 6 is characterized in that,
Said according to said bandwidth value, from described request a plurality of files in stream media corresponding, different code checks obtain the corresponding slice of data in the files in stream media of coupling, comprising:
According to the files in stream media sign of carrying in said bandwidth value and the described request; From description document, search the Streaming Media section attribute information of coupling; Wherein, Said Streaming Media section attribute information is corresponding with said files in stream media sign, and related code rate information and the said bandwidth value of said Streaming Media section attribute information be complementary, and according to the said Streaming Media attribute information of cutting into slices; Obtain corresponding slice of data, said Streaming Media section attribute information comprises zero-time, concluding time and the storage address of each slice of data that said files in stream media comprises.
8. method according to claim 7 is characterized in that,
Said obtain with the request of obtaining files in stream media of user terminal the bandwidth of related current link, said bandwidth dedicated bandwidth value representation comprises:
After receiving the request of obtaining files in stream media that user terminal sends, detect the related current link bandwidth of described request, perhaps the bandwidth on demand checkout equipment detects and provides the bandwidth of the related current link of described request, and said bandwidth is represented with first bandwidth value;
Wherein, Said according to the files in stream media sign of carrying in said bandwidth value and the described request, from description document, search the Streaming Media section attribute information of coupling, wherein; Said Streaming Media section attribute information is corresponding with said files in stream media sign; And related code rate information and the said bandwidth value of said Streaming Media section attribute information is complementary, and according to said Streaming Media section attribute information, obtains corresponding slice of data; Said Streaming Media section attribute information comprises zero-time, concluding time and the storage address of each slice of data that said files in stream media comprises, comprising:
According to the files in stream media sign of carrying in said first bandwidth value and the described request; From description document, search the Streaming Media section attribute information of coupling; Wherein, Said Streaming Media section attribute information is corresponding with said files in stream media sign, and related code rate information and said first bandwidth value of said Streaming Media section attribute information be complementary, and the said Streaming Media attribute information of cutting into slices comprises zero-time, concluding time and the storage address of each slice of data that said files in stream media comprises;
According to the storage address of the slice of data of zero-time ascending sort first, obtain the first corresponding slice of data;
Wherein, saidly return said slice of data to said user terminal and comprise: return said first slice of data to said user terminal.
9. method according to claim 8 is characterized in that,
Said obtain with the request of obtaining files in stream media of user terminal the bandwidth of related current link, said bandwidth dedicated bandwidth value representation comprises:
When the request of obtaining files in stream media of receiving that user terminal sends; And after returning said first slice of data; With the first threshold time interval; Periodically detect the related current link bandwidth of described request, perhaps periodically the bandwidth on demand checkout equipment detects and provides the bandwidth of the related current link of described request, and said bandwidth is represented with second bandwidth value;
Wherein, Said according to the files in stream media sign of carrying in said bandwidth value and the described request, from description document, search the Streaming Media section attribute information of coupling, wherein; Said Streaming Media section attribute information is corresponding with said files in stream media sign; And related code rate information and the said bandwidth value of said Streaming Media section attribute information is complementary, and according to said Streaming Media section attribute information, obtains corresponding slice of data; Said Streaming Media section attribute information comprises zero-time, concluding time and the storage address of each slice of data that said files in stream media comprises, comprising:
According to the files in stream media sign of carrying in said second bandwidth value and the described request; From description document, search the Streaming Media section attribute information of coupling; Wherein, Said Streaming Media section attribute information is corresponding with said files in stream media sign, and related code rate information and said second bandwidth value of said Streaming Media section attribute information be complementary, and the said Streaming Media attribute information of cutting into slices comprises zero-time, concluding time and the storage address of each slice of data that said files in stream media comprises;
According to the storage address of the zero-time slice of data identical or continuous, obtain corresponding next slice of data with the concluding time of said first slice of data or a last slice of data;
Wherein, saidly return said slice of data to said user terminal and comprise: return said next slice of data to said user terminal.
10. a streaming media server is characterized in that, comprising:
Acquiring unit, be used to obtain with the request of obtaining files in stream media of user terminal the bandwidth of related current link, said bandwidth dedicated bandwidth value representation;
Processing unit; Be used for according to said bandwidth value; From with described request a plurality of files in stream media corresponding, different code checks obtain the corresponding slice of data in the files in stream media of coupling, wherein, said files in stream media corresponding code rate and said bandwidth value are complementary;
Transmitting element is used for returning said slice of data to said user terminal.
11. streaming media server according to claim 10 is characterized in that,
Said processing unit specifically is used for: the files in stream media sign of carrying according to said bandwidth value and described request; From description document, search the Streaming Media section attribute information of coupling; Wherein, Said Streaming Media section attribute information is corresponding with said files in stream media sign, and related code rate information and the said bandwidth value of said Streaming Media section attribute information be complementary, and according to the said Streaming Media attribute information of cutting into slices; Obtain corresponding slice of data, said Streaming Media section attribute information comprises zero-time, concluding time and the storage address of each slice of data that said files in stream media comprises.
12. streaming media server according to claim 11 is characterized in that,
Said acquiring unit specifically is used for: after receiving the request of obtaining files in stream media that user terminal sends; Detect the related current link bandwidth of described request; Perhaps the bandwidth on demand checkout equipment detects and provides the bandwidth of the related current link of described request, and said bandwidth is represented with first bandwidth value;
Said processing unit specifically is used for: the files in stream media sign of carrying according to said first bandwidth value and described request; From description document, search the Streaming Media section attribute information of coupling; Wherein, Said Streaming Media section attribute information is corresponding with said files in stream media sign; And related code rate information and said first bandwidth value of said Streaming Media section attribute information is complementary, and said Streaming Media section attribute information comprises zero-time, concluding time and the storage address of each slice of data that said files in stream media comprises; According to the storage address of the slice of data of zero-time ascending sort first, obtain the first corresponding slice of data;
Said transmitting element specifically is used for: return said first slice of data to said user terminal.
13. streaming media server according to claim 12 is characterized in that,
Said acquiring unit specifically is used for: when the request of obtaining files in stream media of receiving that user terminal sends; And after returning said first slice of data; With the first threshold time interval; Periodically detect the related current link bandwidth of described request, perhaps periodically the bandwidth on demand checkout equipment detects and provides the bandwidth of the related current link of described request, and said bandwidth is represented with second bandwidth value;
Said processing unit specifically is used for: the files in stream media sign of carrying according to said second bandwidth value and described request; From description document, search the Streaming Media section attribute information of coupling; Wherein, Said Streaming Media section attribute information is corresponding with said files in stream media sign; And related code rate information and said second bandwidth value of said Streaming Media section attribute information is complementary, and said Streaming Media section attribute information comprises zero-time, concluding time and the storage address of each slice of data that said files in stream media comprises; And, according to the storage address of the zero-time slice of data identical or continuous, obtain corresponding next slice of data with the concluding time of said first slice of data or a last slice of data;
Said transmitting element specifically is used for: return said next slice of data to said user terminal.
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