CN102136289B - Methods, devices and systems for storing and reading media contents - Google Patents
Methods, devices and systems for storing and reading media contents Download PDFInfo
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- CN102136289B CN102136289B CN 201010615967 CN201010615967A CN102136289B CN 102136289 B CN102136289 B CN 102136289B CN 201010615967 CN201010615967 CN 201010615967 CN 201010615967 A CN201010615967 A CN 201010615967A CN 102136289 B CN102136289 B CN 102136289B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4333—Processing operations in response to a pause request
Abstract
The embodiment of the invention discloses methods, devices and systems for storing and reading media contents. The method for storing the media contents comprises the following steps of: receiving the media contents of a live broadcast time shifting service; generating fast-backward files of the media contents, allocating storage fragments to the fast-backward files and storing the fast-backward files in the storage fragments; and if fast-backward files are under generation after the storage fragments are fully written, continually allocating storage fragments to the fast-backward files and storing the fast-backward files which are not stored in newly-allocated storage fragments until all fast-backward files are stored. The fast-backward files the sizes of which cannot be predicted are stored by using the fragments and a large storage space is not needed to be allocated to the fast-backward files the sizes of which cannot be predicted in advance, so that the pre-occupied system storage space is reduced, and the allocation of the storage space is matched with the requirement on storage.
Description
Technical field
The present invention relates to technical field of memory, particularly a kind of storage means of media content, read method, device and system.
Background technology
Usually all can use method and the storage device of data storages in technical field of memory, for example the storage of the live rewind down file of the required generation of realization time shift is exactly a kind of in numerous storage demands in video request program (Video On Demand, VOD).
Along with time-moving television popularizing in live telecast, the user can be by the time shift of real-time channel live, and everyone can see and others different TV, has changed the same time of people, sees the tradition of same TV, the personalization that round Realization is real.Time shift just refers to F.F., rewind down, the pausing operation to live telecast, the user passes through remote controller, can suspend the live broadcast channel, as X2, X4, the F.F. of X6, X8, the fast reverse operation used as the digital versatile disc (Digital Versatile Disc, DVD).
In the time shift system, in order to support the time shift rewind down, need to generate in real time auxiliary rewind down file.
The development of content delivery network, the hierarchical approaches storage is adopted in the content storage.The data staging storage refers to that Data object leaves in the memory device of different stage (disk, disk array, CD server, tape library), administers software by the classification storage and realizes the Autonomic Migration Framework of Data object between memory device.The rule of Data Migration can manual control, the best storage strategy of normally determining according to factors such as the access frequency of data, retention time, capacity, performance requirements.In the ranked data storage organization, the lower-cost storage resources such as tape library is used for depositing the lower information of access frequency, and the costs such as disk or disk array are high, fireballing equipment, are used for storing the important information of frequent access.VOD content and the live content of recording leave the central store node in; Under this storage mode, central store sets up an index file (index file) can for each live content static or that record, is used for record original document, rewind down file, the fileinfo of F.F. file and the positional information of media data.
In the generative process of live recorded content, original contents, the fast forwarding and fast rewinding content, index file the three generate simultaneously, and along with live progress, the content of recording constantly increases, and rewind down file, F.F. file, index file all need to upgrade dynamically.The index file that edge fluidisation server dynamically updates is by reference realized the location to live recorded content;
Generally speaking, the fluidisation server all is according to the byte order fluidisation to the fluidisation of file, realize the result of broadcast that falls back, requires the Content placement that generates first in the rear end of file storage.When setting live recorded content generation, the duration of live recorded content can be set usually, system sets the size of rewind down file according to the duration * file bit rate of live recorded content.For file system, determine end of file position (also can be the concluding time) after, just mean and determined file size; At this time, if the live time of recording is estimated deficiency, such as basketball or this match that may adopt the added-time mode to determine victory or defeat of tennis, if it is too little that fixture is estimated, according to definite rewind down file size of the time of estimating, when the match overtime, the live content that can cause prolonging can't write the rewind down file.In order to evade this problem, usually need to regenerate a file, and copy original rewind down data; Caused so several problems: 1, a large amount of data copies has caused the overhead of system; 2, the file destroyed that regenerates the index relative of index file to associated documents, can cause rewind down file program request failure.
According to the file of live recorded content time setting fixed size, if the VOD content finishes in advance, then wasted memory space; If the time lengthening of VOD content then can cause follow-up content can't generate the rewind down data; Such problem is prevalent in need to be allocated memory space in advance and need under the situation that the file size of storage can not determine before distribution, the problem that causes the demand of the memory space of distribution and storage to mate.
Summary of the invention
The technical problem that the embodiment of the invention will solve provides a kind of storage means, read method, device and system of media content, the coupling of the distribution of realization memory space and the demand of storage.
For solving the problems of the technologies described above, the storage means embodiment of media content provided by the present invention can be achieved through the following technical solutions:
Receive the media content of direct broadcast time-shift business;
Generate the rewind down file of described media content, for described rewind down file allocation storage burst, store the rewind down file into the storage burst; If described storage burst is write the rewind down file that is generating in addition completely afterwards, then continue as described rewind down file allocation storage burst, store the rewind down file of not storing into newly assigned storage burst; Until the whole storages of rewind down file are complete.
A kind of read method of media content comprises:
The receiving media content request message, described media content request message comprises outside index and the context of the rewind down file that will read;
The storage burst that is identified for storing described rewind down file according to outside index and the context of described rewind down file;
Reading described rewind down file cocurrent from described storage burst send.
A kind of storage device of media content comprises:
The file receiving element is for the media content that receives the direct broadcast time-shift business;
File generating unit is for the rewind down file that generates described media content;
Judging unit is for the rewind down file that judges whether generating in addition;
Storage control unit is used to described rewind down file allocation storage burst, stores the rewind down file into the storage burst; If described storage burst is write the rewind down file that is generating in addition completely afterwards, then continue as described rewind down file allocation storage burst, store the rewind down file of not storing into newly assigned storage burst; Until the whole storages of rewind down file are complete.
A kind of reading device of media content comprises:
The request receiving unit is used for the receiving media content request message, and described media content request message comprises outside index and the context of the rewind down file that will read;
Retrieval unit is used for the storage burst that outside index and context according to described rewind down file are identified for storing described rewind down file;
Transmitting element is used for sending and reads described rewind down file from described storage burst.
A kind of storage system of media content, comprise: storage device and reading device, it is characterized in that: the reading device of the media content that the storage device of the media content of any one that storage device provides for the embodiment of the invention, reading device provide for the embodiment of the invention.
Technique scheme has following beneficial effect: store the rewind down file that can't predict size by burst, needn't allocate large memory space in advance for the rewind down file that can't predict size, reduced like this system memory space that takies in advance, the coupling of the distribution of realization memory space and the demand of storage.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is embodiment of the invention method flow schematic diagram;
Fig. 2 is embodiment of the invention method flow schematic diagram;
Fig. 3 is embodiment of the invention storage file structure schematic diagram;
Fig. 4 is embodiment of the invention apparatus structure schematic diagram;
Fig. 5 is embodiment of the invention apparatus structure schematic diagram;
Fig. 6 is embodiment of the invention apparatus structure schematic diagram;
Fig. 7 is embodiment of the invention apparatus structure schematic diagram;
Fig. 8 is embodiment of the invention apparatus structure schematic diagram;
Fig. 9 is embodiment of the invention system configuration schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
A kind of storage means of media content as shown in Figure 1, comprising:
101: the media content that receives the direct broadcast time-shift business; Generate the rewind down file of above-mentioned media content;
The media content of the direct broadcast time-shift business here may be disposable continuous reception, also may be desultory reception, and the present specification that how to receive for the media content of direct broadcast time-shift business will not limit.
102: for above-mentioned rewind down file allocation storage burst, store the rewind down file into the storage burst; If above-mentioned storage burst is write the rewind down file that is generating in addition completely afterwards, then continue as above-mentioned rewind down file allocation storage burst, store the rewind down file of not storing into newly assigned storage burst; Until the whole storages of rewind down file are complete.
Further, be applied in the storing process of live rewind down file, the storage order that above-mentioned rewind down file stores the storage burst into writes successively for the rear end forward end from the storage burst.
Above-described embodiment, store the rewind down file that to predict size by burst, needn't allocate large memory space in advance for the rewind down file that can't predict size, reduce like this system memory space that takies in advance, the coupling of the distribution of realization memory space and the demand of storage.
The size of storage burst can all be equally large, and the size of the storage burst of each sub-distribution also can be set according to predetermined rule, will not limit this embodiment of the invention, for example can fixed size, and the form memory allocated burst that also can size successively decrease.All right for the retrieval of conveniently later rewind down file in addition:
Be storage burst allocation identification ID, this ID is used for the positional information of this storage burst of expression, namely stores the routing information of burst.In order clearly to express the storage burst of different rewind down files, can also increase for the sign of storage burst the prefix of the outside index name of rewind down file, for example will store the outside index name+ID of burst called after rewind down file.
In addition, also need to set up the burst index; Above-mentioned burst index is in order to the mapping relations between the sign of the context that represents the rewind down file that above-mentioned storage burst is stored and above-mentioned storage burst, and particularly, the context of rewind down file represents with bytes range.
The storage means embodiment of the invention of corresponding media content also provides a kind of read method of media content, as shown in Figure 2, comprising:
201: the receiving media content request message, above-mentioned media content request message comprises outside index and the context of the rewind down file that will read;
202: the storage burst that is identified for storing above-mentioned rewind down file according to outside index and the context of above-mentioned rewind down file;
The storage burst that is identified for storing above-mentioned rewind down file according to the outside index of above-mentioned rewind down file and context comprises: according to outside index and the context inquiry burst index of above-mentioned rewind down file, determine the sign of above-mentioned storage burst, wherein, the sign of above-mentioned storage burst is used for representing the positional information of above-mentioned storage burst; Determine above-mentioned storage burst according to the sign of above-mentioned storage burst.
203: from above-mentioned storage burst, read above-mentioned rewind down file cocurrent and send.The transmission destination of the content that sends here may be the transmit leg of media content request message, also may be the third party device of the side of reading of the transmit leg of media content request message and media content, will not limit this embodiment of the invention.
Below will and be read as example with the generation of live rewind down file, in the mode of system above-described embodiment will be further detailed.
When live recorded content generated, the rewind down file generated and stored according to the mode of burst, and each burst generates next burst after writing and expiring, until the whole storages of the data of rewind down file are complete.Each burst can be set according to certain rule, and a kind of rule is to set according to the mode of fixed size; Signal such as storage file is shown in Figure 3, and overlapping square pattern has represented four bursts 301: rewind down content (italic grid part) writes to the rewind down file header from the rewind down tail of file; Live recorded content, when F.F. content and rewind down content generate, the index information of its media content also is synchronized in the index file (index file), for example: each video or audio sample index information hereof can be synchronized in the Index file, and along with live evolution, index information constantly increases.In the burst rule, also comprise the naming rule of setting burst; Slicing files is named according to naming rule.A kind of simple implementation is: each burst distributes an ID, and ID is relevant with burst position hereof.For example, be assigned as 1 for first burst is assigned as 0, the second burst, the rewind down file is ABCD to the index of outside, and then the name of burst is called ABCD_0, ABCD_1.
The equipment of the storage of rewind down file fragmentation and distribution can comprise: user's request processing logic, and burst content location logic, the rewind down file generator, and content sends logic.As shown in Figure 4:
401: storage server receives the request rewind down file of external user;
402: system at first carries out burst content location logic;
403: through burst content location logic, obtain ID and the byte-accessed of burst; Wherein store path and the filename of the corresponding slicing files of the ID of burst.
404: the module that content sends is obtained the rewind down content according to burst ID and bytes range from quick burst maker (can memory device corresponding diagram 3), then send the needed rewind down content of user to the user.
In the present embodiment, central store can generate the rewind down file according to the length of actual programme televised live when processing live recorded content, save system memory space; It is elongated or shorten to adapt to time of live recorded content, generates suitable rewind down file; For the rewind down file, can increase and increase along with the time, reduced taking in advance system memory space.
A kind of storage device of media content as shown in Figure 5, comprising:
File receiving element 501 is for the media content that receives the direct broadcast time-shift business;
Judging unit 503 is for the rewind down file that judges whether generating in addition;
More specifically, above-mentioned storage control unit 504 is used for the memory allocated burst and comprises: according to the regular allocation fixed size that pre-establishes or the big or small storage burst that successively decreases.
As shown in Figure 6, said apparatus also comprises:
As shown in Figure 7, said apparatus also comprises:
Unit 701 set up in index, is used for setting up the burst index, and above-mentioned burst index is in order to the mapping relations between the sign of the context that represents the rewind down file that above-mentioned storage burst is stored and above-mentioned storage burst.
More specifically, above-mentioned storage control unit 504 is used for storing the rewind down file into the storage burst and comprises: be used for storing the rewind down file storage order of storage into for writing successively from the rear end forward end of storing burst.
A kind of reading device of media content as shown in Figure 8, comprising:
Transmitting element 803 is used for sending and reads above-mentioned rewind down file from above-mentioned storage burst.
More specifically, above-mentioned retrieval unit 802 is used for outside index and context inquiry burst index according to above-mentioned rewind down file, determines the sign of above-mentioned storage burst, and wherein, the sign of above-mentioned storage burst is used for representing the positional information of above-mentioned storage burst; Determine above-mentioned storage burst according to the sign of above-mentioned storage burst.
A kind of storage system of media content, as shown in Figure 9, comprise: storage device 901 and reading device 902, the storage device of the media content that provides for embodiment of the invention any one of storage device 901 wherein, the reading device of the media content that reading device 902 embodiment of the invention any one provide.
Above-described embodiment, store the rewind down file that to predict size by burst, needn't allocate large memory space in advance for the rewind down file that can't predict size, reduce like this system memory space that takies in advance, the coupling of the distribution of realization memory space and the demand of storage.
One of ordinary skill in the art will appreciate that all or part of step that realizes in above-described embodiment method is to come the relevant hardware of instruction to finish by program, above-mentioned program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
More than storage means, read method, device and the system of a kind of media content that the embodiment of the invention is provided be described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, to sum up, this description should not be construed as limitation of the present invention.
Claims (14)
1. the storage means of a media content is characterized in that, comprising:
Receive the media content of direct broadcast time-shift business;
Generate the rewind down file of described media content, for described rewind down file allocation storage burst, store the rewind down file into described storage burst; If described storage burst is write the rewind down file that is generating in addition completely afterwards, then continue as described rewind down file allocation storage burst, store the rewind down file of not storing into newly assigned storage burst; Until the whole storages of rewind down file are complete;
The storage order that described rewind down file stores the storage burst into writes successively for the rear end forward end from the storage burst.
2. described method according to claim 1 is characterized in that described memory allocated burst comprises:
According to the regular allocation fixed size that pre-establishes or the big or small storage burst that successively decreases.
3. described method according to claim 1 is characterized in that, also comprises: be described storage burst allocation identification, described sign is used for representing the positional information of described storage burst.
4. described method according to claim 3 is characterized in that, also comprises: the prefix that increases the outside index name of described rewind down file for the sign of described storage burst.
5. described method according to claim 3 is characterized in that, also comprises:
Set up the burst index, described burst index is in order to the mapping relations between the sign of the context that represents the rewind down file that described storage burst is stored and described storage burst.
6. the read method of a media content is characterized in that, comprising:
The receiving media content request message, described media content request message comprises outside index and the context of the rewind down file that will read;
The storage burst that is identified for storing described rewind down file according to outside index and the context of described rewind down file; Described rewind down file in the storage order of storage burst is: write successively from the rear end forward end of storage burst;
Reading described rewind down file cocurrent from described storage burst send.
7. described method according to claim 6 is characterized in that, the storage burst that is identified for storing described rewind down file according to the outside index of described rewind down file and context comprises:
According to outside index and the context inquiry burst index of described rewind down file, determine the sign of described storage burst, wherein, the sign of described storage burst is used for representing the positional information of described storage burst;
Determine described storage burst according to the sign of described storage burst.
8. the storage device of a media content is characterized in that, comprising:
The file receiving element is for the media content that receives the direct broadcast time-shift business;
File generating unit is for the rewind down file that generates described media content;
Judging unit is for the rewind down file that judges whether generating in addition;
Storage control unit is used to described rewind down file allocation storage burst, stores the rewind down file into the storage burst; If described storage burst is write the rewind down file that is generating in addition completely afterwards, then continue as described rewind down file allocation storage burst, store the rewind down file of not storing into newly assigned storage burst; Until the whole storages of rewind down file are complete;
Described storage control unit is used for storing the rewind down file into the storage burst and comprises: be used for storing the rewind down file into store burst storage order and write successively for the rear end forward end from the storage burst.
9. described device according to claim 8 is characterized in that, described storage control unit is used for the memory allocated burst and comprises: the storage burst that successively decreases according to the regular allocation fixed size that pre-establishes or size.
10. described device according to claim 8 is characterized in that, also comprises:
Numbered cell is used to described storage burst allocation identification, and described sign is used for representing the positional information of described storage burst.
11. described device is characterized in that according to claim 10, also comprises:
The unit set up in index, is used for setting up the burst index, and described burst index is in order to the mapping relations between the sign of the context that represents the rewind down file that described storage burst is stored and described storage burst.
12. the reading device of a media content is characterized in that, comprising:
The request receiving unit is used for the receiving media content request message, and described media content request message comprises outside index and the context of the rewind down file that will read;
Retrieval unit is used for the storage burst that outside index and context according to described rewind down file are identified for storing described rewind down file; Described rewind down file in the storage order of storage burst is: write successively from the rear end forward end of storage burst;
Transmitting element is used for sending the described rewind down file that reads from described storage burst.
13. described device according to claim 12, it is characterized in that, described retrieval unit, be used for outside index and context inquiry burst index according to described rewind down file, determine the sign of described storage burst, wherein, the sign of described storage burst is used for representing the positional information of described storage burst; Determine described storage burst according to the sign of described storage burst.
14. the storage system of a media content, comprise: storage device and reading device, it is characterized in that: storage device is the storage device of the media content of claim 8 to 11 any one, and reading device is the reading device of the media content of claim 12 or 13.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010615967 CN102136289B (en) | 2010-12-30 | 2010-12-30 | Methods, devices and systems for storing and reading media contents |
| PCT/CN2011/084712 WO2012089096A1 (en) | 2010-12-30 | 2011-12-27 | Storage method and reading method of media contents, and device and system |
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| CN 201010615967 CN102136289B (en) | 2010-12-30 | 2010-12-30 | Methods, devices and systems for storing and reading media contents |
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| CN102136289B true CN102136289B (en) | 2013-03-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102136289B (en) * | 2010-12-30 | 2013-03-13 | 华为技术有限公司 | Methods, devices and systems for storing and reading media contents |
| CN102708107A (en) * | 2011-12-13 | 2012-10-03 | 北京安天电子设备有限公司 | Method and system for storing appended files |
| WO2012092901A2 (en) * | 2012-02-13 | 2012-07-12 | 华为技术有限公司 | Media storage system and method |
| CN103152377B (en) * | 2012-12-13 | 2016-05-11 | 中国科学院深圳先进技术研究院 | A kind of data access method towards ftp service |
| CN103108029B (en) * | 2012-12-13 | 2016-06-29 | 中国科学院深圳先进技术研究院 | The data access method of vod system |
| CN104796741B (en) * | 2015-04-15 | 2018-03-16 | 姚世明 | A kind of media sharing square law device of network hierarchy and resource burst |
| CN108763479A (en) * | 2018-05-29 | 2018-11-06 | 宁波三星医疗电气股份有限公司 | File management method based on terminal document system |
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| CN1886988B (en) * | 2003-10-22 | 2012-07-04 | 视频网络Ip控股有限公司 | Non-linear interactive video navigation |
| US20100064317A1 (en) * | 2004-12-09 | 2010-03-11 | Koninklijke Philips Electronics, N.V. | Method and apparatus for playing back a program |
| CN101102465A (en) * | 2006-07-03 | 2008-01-09 | 长江计算机(集团)公司 | A time shift system for playing digital TV |
| US7924456B1 (en) * | 2007-01-12 | 2011-04-12 | Broadbus Technologies, Inc. | Data distribution and buffering |
| CN102136289B (en) * | 2010-12-30 | 2013-03-13 | 华为技术有限公司 | Methods, devices and systems for storing and reading media contents |
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| CN102136289A (en) | 2011-07-27 |
| WO2012089096A1 (en) | 2012-07-05 |
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