CN101127898A - Slice storage and streaming service method for stream media system and multimedia files - Google Patents
Slice storage and streaming service method for stream media system and multimedia files Download PDFInfo
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Abstract
The utility model provides a stream media service system, comprising a plurality of media engines, each composed of a stream service device with the capacity of stream service and a slice storing device holding multimedia file slices; and a media director, which is composed of a storage manager governing the storage positions of the multimedia file slices and a stream service director dispatching and switching stream service. The utility model also provides the method of slicing multimedia file, the storing method with slices as storage units as well as the method of stream service dispatching and switching. By adopting the system and methods in the utility model, the grid storage and grid stream service can share a cluster server so as to cut hardware cost, diminish grid copy, reduce grid flux as well as improve the IO capacity and stream service capacity of the stream media server and in turn provide the stream media service of high performance-price ratio.
Description
Technical field
The present invention relates to multimedia communication and Web TV (IPTV) field, relating in particular in the dicing method of multimedia file, a kind of stream media service system with the media file is the grid storage of memory cell and grid service method for stream, and stream media service system.
Background technology
Along with the development of multimedia network communication technology, high bit rate multimedia streaming is transmitted especially the stream transmission of high bit rate video and has been developed into the millions of customer from handling thousands of simultaneous users.For example, be the streaming media service of the high code check of representative with IPTV, developed into the stage at hundred general-purpose families, provide storage and stream service can't satisfy such demand by the powerful machines of concentrating.Therefore, the server based on cluster even many clusters provides grid storage and grid stream service manner to become inevitable solution.
In general grid memory technology, since transparent fully to file type, no matter any file all can simply be divided isometric piece, to store different zones into.Such grid storage, because the index information concentrated area of entire media file is stored in certain zone, for streaming media service, each piece of each media file all can't stand-alone service, all must just can flow service after copying the stream service cluster to from the storage cluster.Fig. 3 illustrates the piecemeal grid storage format schematic diagram of prior art.Piecemeal grid storage format of the prior art is just done simple piecemeal to file, and is indifferent to content and form inside the file.The result of its piecemeal is, the index information of this media file usually is split to wherein in certain piecemeal, and remaining all piecemeals all do not have index information.Therefore, these piecemeals all can't independently flow service.As shown in Figure 3, owing to storage and streaming server in the prior art belong to two physically independent clusters, therefore only store the piecemeal 1,2 that multimedia file is divided at storage back end (7) ... k.Back end (7) is respectively stored in storage Control Node (6) control, the documentary piecemeal positional information of storage in storage Control Node (6).Because the piecemeal of prior art is indifferent to the content and the form of file the inside, therefore, as shown in Figure 3, for example, the media content index information of whole file is only arranged in piecemeal k.Like this, as shown in Figure 4, each piece of each media file all can't stand-alone service, all must just can flow service after copying the stream service cluster to from the storage cluster.Fig. 4 illustrates the prior art grid storage stream media system schematic diagram that service separates with grid stream.Reason owing to the piecemeal grid storage format shown in Fig. 3, service usually is two different clusters physically with grid stream in the grid storage in this architecture, network exchange by inside between them reads the file block that is stored in each different memory cell successively and copies in certain streaming media service unit, and then flows service successively.Promptly, as shown in Figure 3, for example, the media content index information that whole file is only arranged in piecemeal k, and when being called with the piecemeal of the corresponding content of stream service request, the piecemeal k that has the media content index information of whole file must be called simultaneously, like this, just can not only call the storage back end that piecemeal was stored in of the content corresponding with flowing service request.As shown in Figure 4, streaming server node 1 ..., n (8) constitutes stream service node cluster, storage back end 1 ..., n (7) constitutes storage back end cluster, service node is respectively flowed in stream service control node (9) control, back end is respectively stored in storage Control Node (6) control.After user (5) sends the stream service request, storage Control Node (6) will constitute the piecemeal 1,2 of a multimedia file originally according to the piecemeal positional information of the file of storage ... n reads successively and copies in the stream service node 1 through the inner exchanging network, like this, in stream service node 1, just not only include the piecemeal of the content corresponding, also comprise the piecemeal k of the media content index information that has whole file with the stream service request.Like this, the stream service node just can be handled, and flows service through external network to the user.
Therefore, in this architecture, exist storage and two physically independent clusters of stream service, carry out data interaction by network exchange between them.In this scheme, the cost of exchange is very expensive, also usually becomes bottleneck on the performance.And service adheres to different cluster servers separately with stream in storage, can not make full use of the hardware resource of every station server, has also increased hardware cost.
Summary of the invention
An object of the present invention is to reduce hardware cost, reduce network-copy, reduce network traffics, and promote the IO ability and the stream service ability of streaming media server, thereby the streaming media service of high performance-price ratio is provided.
The invention provides a kind of dicing method of multimedia file, comprising: utilize the multimedia file food slicer that multimedia file is cut into slices, make resulting each the section all comprise the part of media content and with the corresponding index information of this part of media content; Each section is stored in each media engine in the mode of disperseing.
In one aspect of the invention, the information of the media engine that section is stored in is stored in the medium director with information, the index information of the media content of this section of sign.
In one aspect of the invention, described section is basic storage and stream service unit.
In one aspect of the invention, described section is based on that fixed length size or fixed medium reproduction time length carries out.
In one aspect of the invention, described multimedia file food slicer is a software processing module, can handle various general multimedia file formats, also can handle the proprietary file form; The file format of handling the formed section file in back through the multimedia file food slicer can be the proprietary file form, also can be general multimedia file format.
It is the grid storage and the grid service method for stream of memory cell that the present invention also provides in a kind of stream media service system with the media file, wherein stream media service system comprises medium director and a plurality of media engine, each described media engine all has stream storage capacity and stream service ability simultaneously, described method comprises: store the media engine positional information that the file section is stored in the medium director, it should flow service request and be dispatched to corresponding media engine according to the memory location of the pairing section file of content of stream service request; When the stream service of this section is finished, switch to new media engine and flow service according to the memory location of the subsequent slice of this document.
In one aspect of the invention, described section has a plurality of backups, with described a plurality of back-up storage in different media engine.
In one aspect of the invention, media engine is the elementary cell of a grid storage and the service of grid stream, and described section is directly handled this media engine after the media engine of storing reads, and directly provides the stream service to the user.
In one aspect of the invention, when the stream of a section is served near end, stored next section and the media engine that flows service ability is arranged flowing to serve to guide into by medium director (4), continue to provide stream to serve, whole process need not user interactions.
The present invention also provides a kind of stream media service system, comprising: a plurality of media engine, each media engine comprise stream service unit with stream service ability and the section storage device that stores the section of multimedia file; The medium director comprises the storage manager of the media engine position that the section of management multimedia file is stored in and the stream service director of scheduling and the service of switching stream.
The present invention with respect to prior art centralized storage and stream service, has improved concurrent stream service ability by memory function and stream service function is integrated in media engine greatly.
On this basis, the grid storage is served with grid stream just can share identical cluster or many cluster servers (i.e. media engine among the figure), that is to say, each server unit (media engine) is the grid memory cell, it is again grid stream service unit, thereby improve each server unit service efficiency, reduce hardware cost and exchange cost.
A multimedia file is handled the back through the multimedia file food slicer and is formed a plurality of sections, and each section all is a file that comprises part of media content and index information thereof.The multimedia file section is carried out the grid storage as the unit, and its location storage in media engine is in the medium director, and like this, the medium director can be inquired about this positional information.Simultaneously, the multimedia file section is carried out the service of grid stream as a basic stream service unit.Adopt method of the present invention, can make grid storage and the service of grid stream share cluster server (media engine), thereby reduce hardware cost, reduce network-copy, lower network traffics, and promote the IO ability and the stream service ability of streaming media server, thereby the streaming media service of high performance-price ratio is provided.
Description of drawings
After the reference accompanying drawing has been read the specific embodiment of the present invention, advantage of the present invention, feature, and various aspects will be apparent, wherein:
Fig. 1 is the basic architecture block diagram of stream media service system of the present invention, and it shows the grid storage format based on the multimedia file of cutting into slices of the present invention;
Fig. 2 is a multimedia file section principle schematic of the present invention;
Fig. 3 illustrates the piecemeal grid storage format and the corresponding stream media service system schematic diagram of prior art;
Fig. 4 illustrates the prior art grid storage stream media system schematic diagram that service separates with grid stream;
Fig. 5 illustrates the system schematic based on grid storage of the present invention and the shared cluster server of grid stream service;
Fig. 6 is an integrated system architectural block diagram of the present invention.
Embodiment
The invention provides a kind of stream media service system, comprising: a plurality of media engine, each media engine comprise stream service unit with stream service ability and the section storage device that stores the multimedia file section; The medium director comprises the storage manager of the memory location of management multimedia file section, and the stream service director of dispatching and switch the stream service.The present invention also provides the dicing method of multimedia file, is storage means and the stream service dispatch and the changing method of unit with the section.A multimedia file is handled the back through the multimedia file food slicer and is formed a plurality of sections that comprise part of media content and index information thereof, disperses to store in each media engine, and generate location index information in storage manager.The medium director is according to the memory location of the pairing file section of the content of stream service request, should flow service request and be dispatched to corresponding media engine, and when the stream service of certain section is finished, switch in the new media engine according to the service of flowing of the memory location of the subsequent slice of this document, finish up to this stream service.Adopt system and method for the present invention, can make grid storage and the service of grid stream share cluster server, thereby reduce hardware cost, reduce network-copy, lower network traffics, and promote the IO ability and the stream service ability of streaming media server.Thereby provide the streaming media service of high performance-price ratio.
With reference to the accompanying drawings, the specific embodiment of the present invention is described in further detail.
Fig. 1 is the basic architecture block diagram of stream media service system of the present invention, and it shows the grid storage format based on the multimedia file of cutting into slices of the present invention.The stream media service system of Fig. 1 comprises a plurality of media engine (3) and medium director (4).Each media engine comprises certain storage capacity and stream service ability, elementary cell as a grid storage and the service of grid stream, it comprises stream service unit (301) with stream service ability and the section storage device (302) that stores the section of multimedia file, as shown in Figure 1, media engine 1 comprises section 2, k, media engine 2 comprises section 1,2, or the like.It is compared with the prior art among Fig. 3, a difference is that respectively storing of Fig. 3 do not flowed service unit in the back end, as shown in Figure 4, stream service unit of the prior art is what to separate with the storage back end, and the present invention is integrated in them in the media engine.The storage back end of stream service unit (301) and section storage device (302) function and Fig. 4 and stream service node are similar, and (except this point: media content index information promptly of the present invention also will be cut, and be placed in the section with corresponding media content, prior art is then put the media content index information of whole file together, probably in a section), therefore, stream service unit (301) and section storage device (302) can be realized by those skilled in the art with reference to storage back end and the stream service node of Fig. 4.Another difference media content search information of whole file in Fig. 3 of the prior art of Fig. 1 and Fig. 3 is to put together to be stored in some piecemeals, and the present invention assigns to them in each section, be about to the multimedia file section, make resulting each the section all comprise the part of media content and with the corresponding index information of this part of media content, promptly elder generation divides the media content of multimedia file, will find out with it with the corresponding index information of media content that is divided into portion then to be placed in the same media engine as a section.That is, described section comprise the part of media content and with the corresponding index information of this part of media content, be basic storage and stream service unit.Medium director (4) receives the stream service request, determine the media engine that section be stored in corresponding with the content of this stream service request, this stream service request is dispatched to the media engine that this is determined, and the stream service unit (301) in this media engine of determining reads section from section storage device (302) and flows service.That is to say that the medium director is the controller that grid storage and grid stream are served, according to the memory location and the stream service ability of the pairing section of content of flowing service request, scheduling and switching user's stream service request.Medium director (4) can be realized by software or hardware by the function of top summary and following detailed description by those skilled in the art.Except media engine shown in Figure 1 (3) and medium director (4), shown in Fig. 2 and 6, system of the present invention also can comprise multimedia file food slicer (2).Utilize described multimedia file food slicer (2) that multimedia file is cut into slices, make resulting each section all comprise the part of media content and with the corresponding index information of this part of media content, and each section is stored in the storage device of respectively cutting into slices (302) in each media engine (3) in the mode of disperseing.Meanwhile, multimedia file food slicer (2) can be stored in the positional information of the section media engine that be stored in information, the index information with the media content of this section of sign in the storage manager (402) of medium director (4).Section can be carried out based on fixed length size, also can carry out based on fixed medium reproduction time length.Described multimedia file food slicer is a software processing module, is realized by software by those skilled in the art, can handle various general multimedia file formats, also can handle the proprietary file form; Handle the formed section file in back through the multimedia file food slicer, its file format can be the proprietary file form, also can be general multimedia file format.In Fig. 5, a multimedia file is divided into k section, and each section all is form behind the flow path switch through section one an independently media file, comprises part of media content and their file index information, as basic stream service unit.According to configuration, the storage of the grid of each section can have a plurality of backups.The positional information of the backup of section and section is kept in the medium director.
Fig. 2 illustrates multimedia file section principle schematic of the present invention.With reference to Fig. 2, any one multimedia file all will form after through the section of multimedia file food slicer and cut into slices 1 ..., k, the media content index information (101) of the whole file that contains in the multimedia file (1) also is divided in each section, as the corresponding index information of media content in cutting into slices with this.And store in the grid storage architecture shown in Figure 1.
As Fig. 1, Fig. 5 and shown in Figure 6, described medium director (4) comprising: storage manager (402), as mentioned above, multimedia file food slicer (2) will have been cut into slices the positional information of the media engine that is stored in the information of the media content of this section of sign, storage manager (402) that index information is stored in medium director (4) accordingly; Stream service director (401), after receiving the streaming server request, media content according to the stream service request is sought in storage manager (402) and the corresponding media engine that stores into of this media content (3), because the information of the media content of sign section, corresponding index information and media engine (3) position of storing into have been stored in this storage manager (402) accordingly, this stream service director (401) just can be learnt and the corresponding media engine that stores into of this media content (3), just can dispatch this media engine (3) work then, the stream service unit (301) in this media engine (3) is directly handled this media engine (3) after its section storage device (302) reads section.
As shown in Figure 6, multimedia file food slicer (2) is cut into slices multimedia file (1), make resulting each the section all comprise the part of media content and with the corresponding index information of this part of media content, and each section is stored in the section storage device (302) of each media engine (3) in the mode of disperseing, the information of the media engine that is stored in of will cut into slices in addition is stored in the medium director (4) with information, the index information of the media content that identifies this section.Because the information of the media engine that section is stored in has been stored in the storage manager (402) of medium directors (4) explicitly with information, the index information of the media content of this section of sign, therefore after stream service director (401) has received the streaming server request, in storage manager (402), seek and the corresponding media engine that stores into of this media content (3) according to the media content in the stream service request.When this stream service director (401) learn with the corresponding media engine that stores into of this media content (3) after, dispatch this media engine (3) work, stream service unit (301) in this media engine (3) is directly handled this media engine (3) after its section storage device (302) reads section, directly user (5) is flowed service.
Because in the present invention, the media content size difference that each stream service request is asked, might one the stream service request media content of asking need a plurality of sections to satisfy, at this moment, before the stream service of a section finishes (when preferably the service of the stream of a section is near end), other section is corresponding with described stream service request in addition if medium director (4) is judged, dispatch the media engine (3) that stores described other section by medium director (4), continue to provide the stream service.
In addition, as shown in Figure 1, a section can have a plurality of backups, such as, section 1 is backed up simultaneously in media engine 2 and n.Like this, if the section 1 in the media engine 2 goes wrong, can also dispatch the section 1 among the media engine n.
Fig. 5 is based on the system schematic of grid storage of the present invention and the shared cluster server (media engine) of grid stream service.As we can see from the figure, adopt after the grid memory technology based on section, each section all is independently to flow service unit.Therefore, grid storage and grid streaming server can be shared a cluster server physically.Section is read from section storage device (302) and just can do various business after directly handle the back in the stream service unit (301) of this media engine, and directly provides the stream service to user (5).When the service of the stream of a section when finishing, by the medium director stream service is being guided into the media engine that the next one stores next section and the stream service ability is arranged, continue to provide the stream service, need not user interactions in the whole process.
Stream service unit (301), section storage device (302) in storage manager (402) in the medium director of the present invention (4) and stream service director (401), the media engine (3) can be realized by software or hardware according to function recited above by those skilled in the art.
Describe the specific embodiment of the present invention above with reference to the accompanying drawings.But those skilled in the art can understand, and under situation without departing from the spirit and scope of the present invention, can also do various changes and replacement to the specific embodiment of the present invention.These changes and replace all drop in claims of the present invention institute restricted portion.
Claims (10)
1. the dicing method of a multimedia file comprises:
Utilize multimedia file food slicer (2) with multimedia file section, make resulting each section all comprise the part of media content and with the corresponding index information of this part of media content;
Each section is stored in each media engine (3) in the mode of disperseing.
2. the method for claim 1 is characterized in that also comprising: the information of the media engine that is stored in of will cutting into slices is stored in the medium director (4) with information, the index information of the media content of this section of sign.
3. the method for claim 1 is characterized in that, described section is basic storage and stream service unit.
4. the method for claim 1 is characterized in that, described section is based on that fixed length size or fixed medium reproduction time length carries out.
5. the method for claim 1 is characterized in that, described multimedia file food slicer is a software processing module, can handle various general multimedia file formats, also can handle the proprietary file form; The file format of handling the formed section file in back through the multimedia file food slicer can be the proprietary file form, also can be general multimedia file format.
6. be the grid storage and the grid service method for stream of memory cell with the media file in the stream media service system, wherein stream media service system comprises medium director (4) and a plurality of media engine (3), each described media engine (3) all has stream storage capacity and stream service ability simultaneously, and described method comprises:
Store the media engine positional information that the file section is stored in the medium director (4), it should flow service request and be dispatched to corresponding media engine according to the memory location of the pairing section file of content of stream service request;
When the stream service of this section is finished, switch to new media engine and flow service according to the memory location of the subsequent slice of this document.
7. method as claimed in claim 6 is characterized in that described section has a plurality of backups, with described a plurality of back-up storage in different media engine.
8. method as claimed in claim 6 is characterized in that, media engine is the elementary cell of a grid storage and the service of grid stream, and described section is directly handled this media engine after the media engine of storing reads, and directly provides the stream service to the user.
9. method as claimed in claim 6, wherein, when the stream of a section is served near end, store next section and the media engine that flows service ability is arranged flowing to serve to guide into by medium director (4), continue to provide the stream service, whole process need not user interactions.
10. stream media service system comprises:
A plurality of media engine (3), each media engine comprise stream service unit (301) with stream service ability and the section storage device (302) that stores the section of multimedia file;
Medium director (4) comprises the storage manager (402) and the scheduling of the media engine position that the section of management multimedia file is stored in and switches the stream service director (401) of stream service.
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| CNA2007101537714A CN101127898A (en) | 2007-09-20 | 2007-09-20 | Slice storage and streaming service method for stream media system and multimedia files |
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| WO2009097716A1 (en) * | 2008-01-31 | 2009-08-13 | Huawei Technologies Co., Ltd. | A method of slicing media content, a method, device and system for providing media content |
| CN102088620A (en) * | 2010-12-01 | 2011-06-08 | 中兴通讯股份有限公司 | Method for downloading media file in content distribution network and client |
| CN102200935A (en) * | 2011-04-27 | 2011-09-28 | 烽火通信科技股份有限公司 | Method for storing data in stream media system |
| CN102231847A (en) * | 2011-03-14 | 2011-11-02 | 新奥特（北京）视频技术有限公司 | Direct and accurate frame positioning method supporting stream media files |
| CN101645923B (en) * | 2009-04-14 | 2012-09-05 | 中国科学院声学研究所 | File segmentation method and calculation method of popularity of segmented fragments |
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| WO2009097716A1 (en) * | 2008-01-31 | 2009-08-13 | Huawei Technologies Co., Ltd. | A method of slicing media content, a method, device and system for providing media content |
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| CN102088620B (en) * | 2010-12-01 | 2014-06-18 | 中兴通讯股份有限公司南京分公司 | Method for downloading media file in content distribution network and client |
| CN102231847A (en) * | 2011-03-14 | 2011-11-02 | 新奥特（北京）视频技术有限公司 | Direct and accurate frame positioning method supporting stream media files |
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