CN101917388A - Streaming media data storage method and device - Google Patents
Streaming media data storage method and device Download PDFInfo
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- CN101917388A CN101917388A CN2009102428111A CN200910242811A CN101917388A CN 101917388 A CN101917388 A CN 101917388A CN 2009102428111 A CN2009102428111 A CN 2009102428111A CN 200910242811 A CN200910242811 A CN 200910242811A CN 101917388 A CN101917388 A CN 101917388A
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Abstract
The invention provides a streaming media data storage method and a streaming media data storage device for solving the problem that the video cannot be accurately positioned. The method comprises the following steps of: segmenting a streaming media file into a plurality of stream slices; establishing index information for each stream slice; establishing a corresponding relationship between the index information and the streaming media file; and storing the streaming media file and the index information respectively. Preferably, the index information can be established for each key frame. The streaming media data storage method and a streaming media data storage device realize the accurate positioning of the video, and a user can directly watch the video from any time point without waiting for transmission and playing of the previous contents.
Description
Technical field
The present invention relates to technical field of data storage, particularly relate to a kind of streaming media data storage method and device.
Background technology
Along with popularizing of the Internet, utilize the demand of Network Transmission sound and vision signal also increasing.After medium such as the radio and television online, also all wish to issue the audio/video program of oneself by the Internet.But the volume of audio frequency and video file when storage is generally all very huge.At the network bandwidth also very under the condition of limited, the transmission of flower dozens of minutes even a longer audio-video document of time waiting can't but be a nerve-wracking thing.The appearance of stream media technology makes the situation of internet transmission audio frequency and video difficulty improve to a certain extent.
The mode of traditional multimedia messagess such as Network Transmission audio frequency and video is to play after downloading fully again, downloads and usually will spend several minutes even a few hours.And the employing stream media technology, just can realize stream transmission, with sound, image or animation by server to subscriber computer carry out continuously, the uninterrupted transmission, the user needn't wait until that whole file is all downloaded and finish, and only need can watch through the startup time-delay of several seconds or tens seconds.When playing on the machines the user such as sound video, the remainder of file also can continue to download from server.
At present, the mode of stored stream media file is whole file storage on the server, and the location of video is operated by the video time point.For example, the user asks online broadcast section video, server need find the video file at this section video place earlier, adopt stream media technology that this video file is transferred to subscriber computer then, when this section video transmission of user request behind subscriber computer, the user can skip over the content of front, watches this section video by the selection direct-on-line of time point, and the remainder of video file also can continue to download from server.
The storage mode of this stream medium data makes the online broadcast of video whole file need be transmitted, and can not accurately navigate to the play position that the user needs, the user also needs to wait for a period of time, by the time after the video Data Transmission of play position front is come, just can watch desired video.
Summary of the invention
Technical problem to be solved by this invention provides a kind of streaming media data storage method and device, to separate the pinpoint problem that must not carry out video.
In order to address the above problem, the invention discloses a kind of streaming media data storage method, comprising:
Files in stream media is divided into a plurality of stream sections;
Index information is set up in each stream section;
Set up the corresponding relation of index information and files in stream media;
Files in stream media and index information are stored respectively.
Preferably, each stream section is then set up index information to each key frame with the key frame sign.
Preferably, described method also comprises:
According to the position of described index information retrieval key frame in files in stream media, and directly begin to play from the time point of this key frame.
Preferably, store described files in stream media into hard disk, described index information is stored into database.
The present invention also provides a kind of stream medium data storage device, comprising:
The file division unit is used for files in stream media is divided into a plurality of stream sections;
Set up indexing units, be used for index information is set up in each stream section;
Map unit is used to set up the corresponding relation of index information and files in stream media;
Memory cell is used for files in stream media and index information are stored respectively.
Preferably, each stream section is with the key frame sign, and the then described indexing units of setting up is set up index information to each key frame.
Preferably, described device also comprises:
Retrieval unit is used for according to described index information retrieval key frame in the position of files in stream media, and directly begins to play from the time point of this key frame.
Preferably, described memory cell comprises:
Database is used to store described index information;
Hard disk is used to store described files in stream media.
Compared with prior art, the present invention has the following advantages:
The invention provides a kind of streaming media data storage method of novelty, this method is divided into a plurality of stream sections with files in stream media, then index information is set up in each stream section, and set up the corresponding relation of index information and files in stream media, at last files in stream media and index information are stored respectively.
The present invention has been owing to set up index to a plurality of streams section of files in stream media, so during certain section video in playing this files in stream media, just can directly find the position of this section video in whole files in stream media by index information, and play.Like this, the user does not need to take time and waits for the transmission and the broadcast of previous contents, just can be directly from video arbitrary time point begin to watch.Therefore, the present invention has realized the accurate location of video.
Description of drawings
Fig. 1 is the flow chart of the embodiment of the invention one described a kind of streaming media data storage method;
Fig. 2 is the flow chart of the embodiment of the invention two described a kind of stream medium data player methods;
Fig. 3 is the structure chart of the embodiment of the invention three described a kind of stream medium data storage devices;
Fig. 4 is the structure chart of the embodiment of the invention four described a kind of stream medium data Play Systems.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
In stream media technology, stored stream media file on the server, and according to user request with transmission of flow media data to client terminal playing.The present invention proposes a kind of streaming media data storage method of novelty, adopt the stream microtomy, with the files in stream media storage of cutting into slices, thereby realization is to the accurate location of stream medium data.
Be elaborated below by embodiment.
Embodiment one:
With reference to Fig. 1, be the flow chart of the embodiment of the invention one described a kind of streaming media data storage method.
Server at first was divided into section with file before the stored stream media file, described section can be understood as data block, and being about to a whole file division is a plurality of data blocks.
Preferably, in stream medium data, can identify each section by key frame.Frame is the least unit of stream medium data, key frame is special frame, be used for defining the variation in the video image, it is residing that frame of key operations in image motion or the variation, comprise motion of objects and characteristics (as size and color), the interpolation that interpolation or deletion object and frame move in scene etc.Whenever, when wishing image, the user changes, perhaps wish to take place certain action, must use key frame.Picture frame between key frame and the key frame can be created by software.
Can set up index information to each key frame;
Key frame in each files in stream media is set up after the index, also needed corresponding files in stream media to set up secondary index, promptly first order index can find certain files in stream media, and second level index can find certain key frame in this document.
Wherein, first order index can the files in stream media name be set to indexing key words, and second level index can the key frame sign be set to indexing key words.
Files in stream media has been built after the index, just whole file can have been stored, also stored index information simultaneously.Usually, files in stream media can be stored on the bigger storage medium in spaces such as hard disk, and index information is stored on the memory database, the system of being convenient to reads at any time.
Need to prove that the stored stream media file is not with stream section storage on the hard disk, is still with whole file storage, the stream microtomy just is used for setting up stream section index.
Based on above-mentioned storage mode, just can accurately navigate to certain key frame, from key frame time corresponding point beginning play stream media data.
Embodiment two:
With reference to Fig. 2, be the flow chart of the embodiment of the invention two described a kind of stream medium data player methods.
The user opens the broadcast window of certain video, and drags click and begin to play from certain time point, and this moment, the server to network terminal sent request, had comprised the video name that will play in the described request, and the information such as time point that begin to play.
Utilize index information, can in the one-level index, find corresponding video file, in secondary index, in this video file, find corresponding key frame position then according to the time point that begins to play according to the video file name of asking.
Server is directly from the key frame position reading of data of this video file, and passes to subscriber computer and play.
Above-mentioned flow process can be used for the stream medium data of net cast or online request and plays, server can accurately navigate to the position of certain key frame, the user does not need to take time and waits for the transmission and the broadcast of this key frame previous contents, just can be directly from video arbitrary time point begin to watch.
Embodiment three:
With reference to Fig. 3, be the structure chart of the embodiment of the invention three described a kind of stream medium data storage devices.
Described device mainly comprises:
File division unit 31 is used for files in stream media is divided into a plurality of stream sections;
Set up indexing units 32, be used for index information is set up in each stream section;
Map unit 33 is used to set up the corresponding relation of index information and files in stream media;
Memory cell 34 is used for files in stream media and index information are stored respectively.
Preferably, each stream section can identify by key frame, and the then described indexing units 32 of setting up can be set up index information to each key frame.
Described index information can be multiple index, and fairly simple a kind of mode is to set up secondary index, and wherein first order index is with files in stream media indexing key words by name, and second level index is designated indexing key words with the key frame in the files in stream media.
Preferably, described memory cell 34 can comprise:
Database is used to store described index information, is arranged on internal memory usually and is convenient to system and reads;
Hard disk is used to store described files in stream media, and memory space is bigger usually, and is whole file storage.
Above-mentioned storage device can be used for the stream medium data storage of net cast or online request, utilizes described storage device can accurately navigate to certain key frame, from key frame time corresponding point beginning play stream media data.
Preferably, described device can also comprise:
Retrieval unit is used for according to described index information retrieval key frame in the position of files in stream media, and directly begins to play from the time point of this key frame.
Described device realized stream medium data fast, accurate location, can accurately navigate to the position of certain key frame, the user does not need to take time and waits for the transmission and the broadcast of this key frame previous contents, just can be directly from video arbitrary time point begin to watch.
Embodiment four:
With reference to Fig. 4, be the structure chart of the embodiment of the invention four described a kind of stream medium data Play Systems.
Described system mainly comprises client 1 and server end 2, and described client 1 is used for request and play stream media data, and described server end 2 is used for adopting stream microtomy stored stream media data, and the request of customer in response end 1.
Described server end 2 comprises streaming media server 21, Streaming Media storage cluster 22 and index server 23, wherein:
Streaming media server 21 is used for 1 request of customer in response end;
Streaming Media storage cluster 22 is used for the stored stream media file;
Index server 23 is used for the key frame of files in stream media is set up index information and storage, according to index information retrieval key frame.
The processing procedure of described system is as follows:
Client 1 sends request to streaming media server 21, after streaming media server 21 is received request, resolves video name and play time that acquisition need be obtained, and notice index server 23; Index server 23 is retrieved according to index information, at first the retrieve video name lookup is to corresponding video file, further retrieve the key frame position of play time correspondence described in this video file then, after retrieving the key frame position, notification streams media server 21; Streaming media server 21 reads the stream medium data that begins from key frame from Streaming Media storage cluster 22, and 1 request of customer in response end, and the data that will begin from this key frame position return to client 1; After client 1 is received stream medium data, just can directly begin to play from this key frame time corresponding point.
Described system has realized the accurate location of stream medium data, has shortened user's stand-by period simultaneously.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For device and system embodiment, because it is similar substantially to method embodiment, so description is fairly simple, relevant part gets final product referring to the part explanation of method embodiment.
More than to a kind of streaming media data storage method provided by the present invention and device, 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, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (8)
1. a streaming media data storage method is characterized in that, comprising:
Files in stream media is divided into a plurality of stream sections;
Index information is set up in each stream section;
Set up the corresponding relation of index information and files in stream media;
Files in stream media and index information are stored respectively.
2. method according to claim 1 is characterized in that:
Each stream section is then set up index information to each key frame with the key frame sign.
3. method according to claim 2 is characterized in that, also comprises:
According to the position of described index information retrieval key frame in files in stream media, and directly begin to play from the time point of this key frame.
4. method according to claim 1 is characterized in that:
Store described files in stream media into hard disk, described index information is stored into database.
5. a stream medium data storage device is characterized in that, comprising:
The file division unit is used for files in stream media is divided into a plurality of stream sections;
Set up indexing units, be used for index information is set up in each stream section;
Map unit is used to set up the corresponding relation of index information and files in stream media;
Memory cell is used for files in stream media and index information are stored respectively.
6. device according to claim 5 is characterized in that:
Each stream section is with the key frame sign, and the then described indexing units of setting up is set up index information to each key frame.
7. device according to claim 6 is characterized in that, also comprises:
Retrieval unit is used for according to described index information retrieval key frame in the position of files in stream media, and directly begins to play from the time point of this key frame.
8. device according to claim 5 is characterized in that, described memory cell comprises:
Database is used to store described index information;
Hard disk is used to store described files in stream media.
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| CN2009102428111A CN101917388A (en) | 2009-12-17 | 2009-12-17 | Streaming media data storage method and device |
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| CN2009102428111A CN101917388A (en) | 2009-12-17 | 2009-12-17 | Streaming media data storage method and device |
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