CN103826139A - CDN system, watching server and streaming media data transmission method - Google Patents
CDN system, watching server and streaming media data transmission method Download PDFInfo
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- CN103826139A CN103826139A CN201410068931.5A CN201410068931A CN103826139A CN 103826139 A CN103826139 A CN 103826139A CN 201410068931 A CN201410068931 A CN 201410068931A CN 103826139 A CN103826139 A CN 103826139A
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Abstract
The invention provides a CDN system, a watching server and a streaming media data transmission method. The streaming media data transmission method is applied to the watching server and includes the steps of firstly, receiving a streaming media data request of a watcher client side; secondly, judging a streaming media protocol supported by the watcher client side according to the streaming media data request; thirdly, generating a corresponding data file through requested streaming media data according to the streaming media protocol supported by the watcher client side and sending the data file to the watcher client side. Through the method, on one hand, an additional CDN system is prevented from being erected, and running cost is reduced; on the other hand, an issuer only needs to issue the data file corresponding to the simplex streaming media protocol to the CDN system, issuing cost is reduced, and issuing time is shortened.
Description
Technical field
The present invention relates to network communications technology field, relate in particular to a kind of streaming media data transmission method, watch server and comprise the CDN system that this watches server.
Background technology
Along with the Internet fast development in recent years, CDN(Content Delivery Network, content distributing network) technology accesses fast the Web page and upgrades the aspects such as page form data for a large number of users and provide and provide powerful support for.CDN technology refers at network places node server everywhere, thereby on existing Internet basic, forms one deck intelligent virtual network architecture.By CDN technology, can avoid as far as possible likely affecting on the Internet bottleneck and the link of data transmission bauds and stability, the content of website is distributed to the network " edge " that approaches user most, make user can obtain required content nearby, thereby can improve the response speed of user's access websites, promote user and experience.
The form of mode transmission of audio, video and multimedia file in network that stream transmission refers to flow; Files in stream media is the media file of supporting to adopt stream transmission and broadcasting.Stream transmission mode is that the multimedia file such as Audio and Video is divided into compressed package one by one through special compress mode, by server to device end continuously, transmit in real time.In employing stream transmission, user needn't wait until as non-stream transmission that whole file all downloads complete ability and can play, but only need to can on device end, utilize corresponding player to play the files in stream media having received through the startup time delay of short time, remaining part will be proceeded to download, until finish.
In recent years, along with the fast development of electronic technology, device end that can playing stream media file is more and more; The terminals such as such as computer, PAD and mobile phone all can playing stream media file.But because the player of configuration is different, the supported stream media protocol of device end that different vendor produced or carried different operating system is very different.The device end that for example Apple produces is supported HLS(HTTP Live Streaming conventionally, dynamic code rate self adaptation) broadcasting of protocol streams media file, and Windows Phone supports MMS(Multi Media Server, a kind of streaming media transportation protocol) broadcasting of protocol streams media file, Android Phone supports RTSP(Real Time Streaming Protocol, real time streaming transport protocol) broadcasting of protocol streams media file, the Flash player of computer end is supported RTMP(Real Time Messaging Protocol, real-time messages transportation protocol) broadcasting of protocol streams media file.
Therefore, for can with the player adaptation of supporting various flows media protocol, in prior art, publisher is issuing video file and need to issue the data of different-format.For example, the data file that needs publisher to issue respectively the stream media protocols such as corresponding HLS, MMS, RTSP and RTMP arrives corresponding CDN system; Also need to different CDN systems be set for every kind of stream media protocol.And in the time that beholder asks stream medium data file, the stream media protocol that can support according to beholder's device end, selects the different CDN system of access.
Like this, need to additionally set up multiple CDN systems on the one hand, need on the other hand publisher repeatedly to issue for identical video file, cause the waste of cost, time and computational resource.
Summary of the invention
The object of the invention is to for the subproblem in background technology or whole issue, a kind of streaming media data transmission method is provided, watches server and comprises the CDN system that this watches server.
First aspect, the invention provides a kind of streaming media data transmission method, is applied to and watches server; Described method comprises:
S1. receive the stream medium data request of beholder's client;
S2. judge according to described stream medium data request the stream media protocol that described beholder's client is supported;
S3. the stream media protocol of supporting according to described beholder's client, utilizes requested stream medium data to generate corresponding data file and is sent to described beholder's client.
Second aspect, the invention provides another kind of streaming media data transmission method, is applied to and at least comprises the CDN network of watching server and publisher server; Described method comprises step:
Publisher server receives the stream medium data of the single stream media protocol of correspondence of publisher's client upload;
Watch the streaming media data transmission method generated data file cocurrent that server provides according to above-mentioned first aspect to deliver to described beholder's client.
The third aspect, the invention provides one and watches server, is applied to CDN network; Comprise:
Request receiving module: for receiving the stream medium data request of beholder's client;
Agreement judge module: for the stream media protocol that judges that according to described stream medium data request described beholder's client is supported;
Data conversion module: for the stream media protocol of supporting according to described beholder's client, utilize requested stream medium data to generate corresponding data file and be sent to described beholder's client.
Fourth aspect, the invention provides a kind of CDN system, comprises the server of watching that publisher server, transfer server and the above-mentioned third aspect provide; Described publisher server receives the stream medium data of the single stream media protocol of correspondence of publisher's client upload.
From above technical scheme, in data transmission method provided by the present invention, first judge according to the stream medium data request of beholder's client the stream media protocol that beholder's client is supported; Then, the stream media protocol of supporting according to beholder's client, utilizes requested stream medium data to generate corresponding data file and is sent to beholder's client.Therefore, by the present invention, can only need to set up the CDN system of corresponding a kind of stream media protocol, in the time of beholder's client end request stream medium data, object flow media data be carried out to corresponding conversion.Like this, avoid additionally setting up CDN system on the one hand, reduced operation cost; Only need on the other hand data file that publisher issues corresponding single stream media protocol to CDN system, reduced issue cost and issuing time.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic flow sheet of a kind of streaming media data transmission method in one embodiment of the present invention;
Fig. 2 is the schematic flow sheet of another kind of streaming media data transmission method in one embodiment of the present invention;
Fig. 3 is a kind of module diagram of watching server in one embodiment of the present invention;
Fig. 4 is the configuration diagram of a kind of CDN system in one embodiment of the present invention.
Embodiment
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment mono-
First a kind of streaming media data transmission method is provided in the present embodiment, has been applied to and watches server, this watches server is a part of CDN system; Beholder, in the time watching video, can directly watch server to send request to this.As shown in fig. 1, described streaming media data transmission method mainly comprises the following steps:
S1. in the time that beholder wants to watch video, can be by beholder's client of device end to watching server to send stream medium data request; Watch server can receive the stream medium data request that beholder's client sends;
S2. watch server to judge according to the stream medium data request receiving the stream media protocol that described beholder's client is supported;
If S3. watch server this locality to have requested stream medium data, or watch server to arrive described requested stream medium data to transfer server or publisher server request, the stream media protocol of watching server to support according to described beholder's client, utilizes requested stream medium data to generate corresponding data file and is sent to described beholder's client.
Below take real-time social video as example, for the streaming media data transmission method in the present embodiment is described in detail.
As shown in Figure 2, in the time that spectators watch real-time video, can be by beholder's client of device end to watching server to send stream medium data request; Watch server can receive the stream medium data request that beholder's client sends.
Watch server to judge according to the stream medium data request receiving the stream media protocol that described beholder's client is supported; For example, the stream media protocol that beholder's client is supported may be HLS, HDS(HTTP Dynamic Streaming), MMS, RTSP and RTMP etc.; Wherein, HLS and HDS are progressive download agreement, its basic skills is to be a data block by the media stream transition of every section of default duration, the data block that thereby continuous files in stream media can be divided into One's name is legion is transmitted, and the lightweight index file that is simultaneously handed down to a continuous renewal of requestor is controlled download and the broadcasting to cutting apart the data block obtaining.And MMS, RTSP and RTMP are RTP, be all after the request that receives requestor, directly to requestor's media stream.
If judge, the stream media protocol of described beholder's client support is progressive download agreement, be HLS or HDS, the progressive download agreement of watching server to support according to described beholder's client, requested stream medium data is converted to the data block of corresponding format, and generating indexes file is sent to described beholder's client; Client is receiving after index file, according to index file from watching server download corresponding data block and play.
Take HSL as example, in prior art, be distributed to data block and the corresponding index file under the HSL agreement of publisher server by publisher, because network transmission speed cannot ensure, therefore index file is difficult to guarantee identical with the no-load speed of data block, therefore, may occur that very much the index file that beholder asks upgrades, and data block corresponding to this index file also do not arrive the situation of watching server, causes beholder to ask cannot play less than corresponding data piece.And in the present invention, because being is data block by media stream transition and generates corresponding index file watching on server, therefore substantially there is not the nonsynchronous phenomenon of index file and data block.
If the stream media protocol of described beholder's client support is RTP, according to described RTP, requested stream medium data is converted to the Media Stream of corresponding format and is sent to described beholder's client.For example, the RTP of supporting according to described beholder's client, the Streaming Media transducer of instantiation respective type; The Streaming Media transducer that utilizes example to dissolve, is converted to described requested stream medium data the Media Stream of corresponding format.Be MMS such as judging the stream media protocol of described beholder's client support in step S2, in described step S3, the Streaming Media transducer of the corresponding MMS (Microsoft Media Server) Protocol of instantiation, is converted to requested stream medium data the data file under MMS (Microsoft Media Server) Protocol and is sent to described beholder's client; Beholder's client can directly be play it after the data file of watching server to send.
Further, in the present embodiment, also provide a kind of server of watching of realizing said method; As shown in Figure 3, described in, watch server to comprise CPU, internal memory, nonvolatile memory and other hardware; In described internal memory, operation has request receiver module, agreement judge module number and according to modular converter; Although the module of request analysis described in the present embodiment, ISP enquiry module, position enquiring module and node distribution module are software module, hold intelligiblely, it can, for realizing the hardware module of concrete function, not do particular determination at this yet.Described watching in server:
Request receiving module is mainly used in receiving the stream medium data request of beholder's client; Agreement judge module is mainly used in judging according to described stream medium data request the stream media protocol that described beholder's client is supported; Data conversion module is mainly used in the stream media protocol of supporting according to described beholder's client, utilizes requested stream medium data to generate corresponding data file and is sent to described beholder's client.
Further, described data conversion module specifically for:
In the time that the stream media protocol of described beholder's client support is progressive download agreement, according to described progressive download agreement, requested stream medium data is converted to the data block of corresponding format, and generating indexes file is sent to described beholder's client; Described progressive download agreement comprises HLS agreement and HDS agreement; In the time that the stream media protocol of described beholder's client support is RTP, according to described RTP, requested stream medium data is converted to the Media Stream of corresponding format and is sent to described beholder's client; Described RTP comprises RTMP agreement, RTSP agreement and MMS (Microsoft Media Server) Protocol.
In addition, described according to described RTP, the Media Stream that requested stream medium data is converted to corresponding format can comprise: according to described RTP, and the Streaming Media transducer of instantiation respective type; Utilize described Streaming Media transducer, described requested stream medium data is converted to the Media Stream of corresponding format.
Embodiment bis-
A kind of embodiment provided streaming media data transmission method is applied in CDN network, can reduces setting up of CDN system.Therefore, in the present embodiment, also provide a kind of streaming media data transmission method that at least comprises the CDN network of watching server and publisher server that is applied to; The method comprising the steps of:
Publisher can only issue video file for a kind of stream media protocol, and publisher server receives the stream medium data of the single stream media protocol of correspondence of publisher's client upload;
When publisher server receives when watching the stream medium data request of server or transfer server, if there is requested stream medium data this locality, requested stream medium data is sent to requestor.When transfer server receives when watching the stream medium data request of server, if there is requested stream medium data this locality, requested stream medium data is sent to and watches server; If originally there is requested stream medium data this locality, to requested stream medium data described in the publisher server request of the described requested stream medium data of issue; In the time that requested stream medium data is arrived in request, requested stream medium data is sent to and watches server.This part similarly to the prior art, does not repeat them here.
In the time watching server to receive the stream medium data request from beholder's client, deliver to described beholder's client according to a kind of provided streaming media data transmission method generated data file cocurrent of embodiment.
Further, the CDN system of watching server that also provides a kind of embodiment of comprising to provide in the present embodiment; In addition, this CDN system also comprises the part such as publisher server and transfer server; Described publisher server receives the stream medium data of the single stream media protocol of correspondence of publisher's client upload.
Comprehensive above-described embodiment is known, in the present invention, can only need to set up the CDN system of corresponding a kind of stream media protocol, in the time of beholder's client end request stream medium data, object flow media data is carried out to corresponding conversion.Like this, avoid additionally setting up CDN system on the one hand, reduced operation cost; Only need on the other hand data file that publisher issues corresponding single stream media protocol to CDN system, reduced issue cost and issuing time.In addition,, for the progressive download agreement of similar HLS and so on, can significantly reduce the asynchrony phenomenon of data block and index file.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (10)
1. a streaming media data transmission method, is applied to and watches server; It is characterized in that, comprising:
S1. receive the stream medium data request of beholder's client;
S2. judge according to described stream medium data request the stream media protocol that described beholder's client is supported;
S3. the stream media protocol of supporting according to described beholder's client, utilizes requested stream medium data to generate corresponding data file and is sent to described beholder's client.
2. streaming media data transmission method according to claim 1, is characterized in that, described step S3 also comprises:
If S31. the stream media protocol of described beholder's client support is progressive download agreement, according to described progressive download agreement, requested stream medium data is converted to the data block of corresponding format, and generating indexes file is sent to described beholder's client;
If S32. the stream media protocol of described beholder's client support is RTP, according to described RTP, requested stream medium data is converted to the Media Stream of corresponding format and is sent to described beholder's client.
3. streaming media data transmission method according to claim 1 and 2, is characterized in that, described according to described RTP, the Media Stream that requested stream medium data is converted to corresponding format comprises:
According to described RTP, the Streaming Media transducer of instantiation respective type;
Utilize described Streaming Media transducer, described requested stream medium data is converted to the Media Stream of corresponding format.
4. streaming media data transmission method according to claim 2, is characterized in that, described progressive download agreement comprises HLS agreement and HDS agreement; Described RTP comprises RTMP agreement, RTSP agreement and MMS (Microsoft Media Server) Protocol.
5. a streaming media data transmission method, is applied to and at least comprises the CDN network of watching server and publisher server; It is characterized in that, described method comprises step:
Publisher server receives the stream medium data of the single stream media protocol of correspondence of publisher's client upload;
Watch server to deliver to described beholder's client according to the method generated data file cocurrent described in claim 1-4 any one.
6. watch a server, be applied to CDN network; It is characterized in that, comprising:
Request receiving module: for receiving the stream medium data request of beholder's client;
Agreement judge module: for the stream media protocol that judges that according to described stream medium data request described beholder's client is supported;
Data conversion module: for the stream media protocol of supporting according to described beholder's client, utilize requested stream medium data to generate corresponding data file and be sent to described beholder's client.
7. the server of watching according to claim 6, is characterized in that, described data conversion module specifically for:
In the time that the stream media protocol of described beholder's client support is progressive download agreement, according to described progressive download agreement, requested stream medium data is converted to the data block of corresponding format, and generating indexes file is sent to described beholder's client;
In the time that the stream media protocol of described beholder's client support is RTP, according to described RTP, requested stream medium data is converted to the Media Stream of corresponding format and is sent to described beholder's client.
8. according to the server of watching described in claim 6 or 7, it is characterized in that, described according to described RTP, the Media Stream that requested stream medium data is converted to corresponding format comprises:
According to described RTP, the Streaming Media transducer of instantiation respective type;
Utilize described Streaming Media transducer, described requested stream medium data is converted to the Media Stream of corresponding format.
9. the server of watching according to claim 7, is characterized in that, described progressive download agreement comprises HLS agreement and HDS agreement; Described RTP comprises RTMP agreement, RTSP agreement and MMS (Microsoft Media Server) Protocol.
10. a CDN system, is characterized in that, comprises publisher server, transfer server and according to the server of watching described in claim 6-9 any one; Described publisher server receives the stream medium data of the single stream media protocol of correspondence of publisher's client upload.
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