CN105872797A - Live broadcast time shifting method and device - Google Patents
Live broadcast time shifting method and device Download PDFInfo
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- CN105872797A CN105872797A CN201510848876.6A CN201510848876A CN105872797A CN 105872797 A CN105872797 A CN 105872797A CN 201510848876 A CN201510848876 A CN 201510848876A CN 105872797 A CN105872797 A CN 105872797A
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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
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47217—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for controlling playback functions for recorded or on-demand content, e.g. using progress bars, mode or play-point indicators or bookmarks
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/232—Content retrieval operation locally within server, e.g. reading video streams from disk arrays
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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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8455—Structuring of content, e.g. decomposing content into time segments involving pointers to the content, e.g. pointers to the I-frames of the video stream
-
- 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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
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- Engineering & Computer Science (AREA)
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- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Human Computer Interaction (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention provides a live broadcast time shifting method and device, wherein the method provided by the invention mainly comprises following steps of obtaining a data request, wherein the data request is used for applying an index file, and the index file is used for recording the index of a video file; locally searching the index file corresponding to first time in the data request; sending the index file corresponding to second time to a live broadcast client if there is no index file corresponding to first time in the local, thus enabling the live broadcast client to obtain and play the video file according to the index in the index file corresponding to the second time, wherein the second time is the time point at which there is the corresponding index file in the local, and the time difference of the second time and the first time is the minimum. Compared with the prior art, the method and the device have the advantages that when the index file corresponding to the first time cannot be searched, the index file corresponding to the second time is directly sent to the live broadcast client, wrong prompt is unnecessarily sent, the video is unnecessarily started by the user, and the user operations are simplified.
Description
Technical field
The present invention relates to communication technical field, the method and apparatus particularly relating to a kind of direct broadcast time-shift.
Background technology
During direct broadcast time-shift refers to net cast, user can arbitrarily play back the live interior of time in the past
Holding, i.e. for the video of the most live mistake, user can click on the operations such as rewind, F.F. and time-out at any time.
It follows that utilize direct broadcast time-shift technology will not allow again user miss live during splendid contents.
But, but there is problems in that during existing net cast to enter when user drags progress bar
During row forwarding operation, usually progress bar can be dragged to the time point that current live time point is later, and
The video data of the time point not correspondence that current live time point is later.Therefore, server can be by
Miscue is sent to live client, after user sees this miscue, it is necessary to reopens this and regards
Frequency ability normal play, operates the most loaded down with trivial details.
Summary of the invention
The method and apparatus that the invention provides a kind of direct broadcast time-shift, in order to solve to work as in prior art user
When dragging the video data that the time point after progress bar does not has correspondence, miscue can be shown, now, use
Family must restart this video ability normal play, so that the problem that operation is the most loaded down with trivial details.
On the one hand, the present invention provides a kind of method of direct broadcast time-shift, described method to include:
Obtaining request of data, described request of data is used for applying for that index file, described index file are used for remembering
The index of record video file；
Index file corresponding to the very first time in described request of data is searched in this locality；
If this locality does not has index file corresponding to the described very first time, then by the index literary composition corresponding second time
Part is sent to live client, in order to described live client is civilian according to the index that described second time is corresponding
Index in part obtains and playing video file, and wherein, described second time is local containing corresponding rope
Quotation part and the time point minimum with the time difference of the described very first time.
On the other hand, the present invention provides the device of a kind of direct broadcast time-shift, described device to include:
Acquiring unit, is used for obtaining request of data, and described request of data is used for applying for index file, described
Index file is for recording the index of video file；
Search unit, first in searching, in this locality, the described request of data that described acquiring unit obtains
The index file that time is corresponding；
Transmitting element, is used for when the lookup result of described lookup unit is that this locality does not has the described very first time pair
During the index file answered, the index file corresponding second time is sent to live client, in order to described
Live client obtains and plays video literary composition according to the index in index file corresponding to described second time
Part, wherein, described second time be local containing corresponding index file and with the described very first time time
The time point that difference is minimum.
The method and apparatus of the direct broadcast time-shift that the present invention provides, it is possible to after obtaining request of data, in this locality
Search index file corresponding to the very first time in request of data, corresponding when not finding the very first time
During index file, directly send minimum with the time difference very first time to live client and contain corresponding index
The index file that second time of file is corresponding, in order to live client is according to index corresponding to the second time
Index in file obtains and playing video file, and thus may indicate that user is nearest away from the very first time
The time point having video data was the second time, and without sending miscue to live client, thus
User without restart video just can normal play, and then simplify user operation.
Accompanying drawing explanation
In order to be illustrated more clearly that the present invention or technical scheme of the prior art, below will to embodiment or
In description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present invention, for those of ordinary skill in the art, do not paying
On the premise of creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The flow chart of the method for a kind of direct broadcast time-shift that Fig. 1 provides for the embodiment of the present invention；
The flow chart of the method for the another kind of direct broadcast time-shift that Fig. 2 provides for the embodiment of the present invention；
The composition frame chart of the device of a kind of direct broadcast time-shift that Fig. 3 provides for the embodiment of the present invention；
The composition frame chart of the device of the another kind of direct broadcast time-shift that Fig. 4 provides for the embodiment of the present invention；
The entity structure schematic diagram of a kind of server that Fig. 5 provides for the embodiment of the present invention.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with this
Accompanying drawing in bright embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention,
Obviously, described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based on
Embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise
The every other embodiment obtained, broadly falls into the scope of protection of the invention.
A kind of method embodiments providing direct broadcast time-shift, as it is shown in figure 1, the method includes:
101, request of data is obtained.
Wherein, request of data is used for applying for index file, and index file is for recording the index of video file.
In actual applications, the live video stream of acquisition can be cut into multiple identical duration or difference by server
The ts file (i.e. video file) of duration, then generates the m3u8 file recording these ts file indexes
(i.e. index file).When the ts file that live user end to server application is corresponding sometime, need
Want first corresponding to this time of server application m3u8 file, then according to the ts of record in m3u8 file
The index of file obtains the address of ts file, and according to this address to server application ts file, gets
Ts file is i.e. can play after ts file.In m3u8 file, record has time started (i.e. the 1st ts file
Time started), the title (or being directly the address of ts file) of ts file and ts file time
The contents such as length.
It should be noted that request of data is carried the application time corresponding to index file that needs, i.e. use
Family drags the time after progress bar or current live time.
102, the index file that the very first time in request of data is searched in this locality is corresponding.
Wherein, the very first time is that the user carried in request of data drags time after progress bar or current
The live time.Such as, the current live time is 17:30:50, if user does not drag progress bar, then counts
Being 17:30:50 according to the very first time in request, if user will drag progress bar to 17:15:00, then data are asked
The very first time in asking is 17:15:00.
After server receives request of data, the very first time can be obtained from request of data, then look into
Look for and local whether store index file corresponding to the very first time, have the very first time corresponding if locally stored
Index file, then to the index file that the live client transmission very first time is corresponding, if this locality does not has first
The index file that time is corresponding, then perform step 103.
If 103 this locality do not have index file corresponding to the very first time, then by the index literary composition corresponding second time
Part is sent to live client, in order to live client is according to the rope in index file corresponding to the second time
Draw acquisition playing video file.
Wherein, the second time was the local index file containing correspondence and the time difference minimum with the very first time
Time point, the i.e. local index file corresponding containing the second time, and the second time and the very first time time
Difference minimum.When this locality does not has index file corresponding to the very first time, server is not sent out to live client
Send miscue, but by containing manipulative indexing file and second time minimum with the time difference very first time
Corresponding index file is sent to live client, in order to live client is according to rope corresponding to the second time
Index in quotation part obtains and playing video file.
It should be noted that in actual applications, server is probably with live client and directly counts
According to alternately, it is also possible to indirectly carry out data interaction (i.e. needing other equipment to forward), at this not
Limit.
In actual applications, when the time after user drags progress bar exceedes the current live time, service
Device local the most not to should the index file of time and video file, if now will be with this time difference time
The index file (i.e. current live time) that the minimum time is corresponding is sent to live client, it is possible to refer to
Video after showing user's current live time cannot be watched, and can only watch current live time and current
Video before the live time.
Additionally, the embodiment of the present invention can apply in cloud live broadcast system.In cloud live broadcast system, relaying
The live video stream that server meeting Real-time Collection photographic head is recorded, and live video stream is cut into multiple ts
File, generates the m3u8 file comprising ts file index, is saved in this locality.When the live client of cloud needs
When obtaining sometime corresponding ts file, need first to CDN (Content Delivery Network,
Content distributing network) server sends for applying for the request of data of m3u8 file；Work as CDN server
After receiving this request of data, can first judge the local m3u8 file whether storing correspondence, if having,
Then directly sending m3u8 file to the live client of cloud, if not having, then can send number to front server
According to request；After front server receives request of data, can first judge whether this locality has stored equally right
The m3u8 file answered, if having, is then sent to the live client of cloud through CDN server by m3u8 file,
If no, then request of data can be sent to Relay Server；After Relay Server receives request of data,
Can first judge the local m3u8 file whether storing correspondence, if having, then through front server, CDN
M3u8 file is sent to the live client of cloud by server, if not having, then can search with time apllied
Between m3u8 file corresponding to minimum time time difference, and by the m3u8 file that finds through front server,
CDN server is sent to the live client of cloud, in order to the live client of cloud is by the m3u8 literary composition received
Index in part obtains and plays the ts file of correspondence.
The method of the direct broadcast time-shift that the embodiment of the present invention provides, it is possible to after obtaining request of data, in this locality
Search index file corresponding to the very first time in request of data, corresponding when not finding the very first time
During index file, directly send minimum with the time difference very first time to live client and contain corresponding index
The index file that second time of file is corresponding, in order to live client is according to index corresponding to the second time
Index in file obtains and playing video file, and thus may indicate that user is nearest away from the very first time
The time point having video data was the second time, and without sending miscue to live client, thus
User without restart video just can normal play, and then simplify user operation.
Further, according to above-described embodiment, an alternative embodiment of the invention additionally provides a kind of live
The method of time shift, as in figure 2 it is shown, the method includes:
201, request of data is obtained.
This step is identical with the specific implementation of above-mentioned steps 101, repeats no more.
202, the index file that the very first time in request of data is searched in this locality is corresponding.
Above-mentioned steps 101 is mentioned in index file record have the time started, video file title (or
The address of person's video file) and the content such as duration of video file, therefore, server can be according to rope
In quotation part, content about the time determines which index file is index file corresponding to the very first time.
Concrete, server travels through locally stored index file；Determine the index file pair of current traversal
The time period answered；If the time period comprises the very first time, it is determined that when the index file of current traversal is first
Between corresponding index file；If the time period does not comprise the very first time, it is determined that the index file of current traversal
It not index file corresponding to the very first time.
Wherein, when the time period that the index file determining current traversal is corresponding, server can obtain rope
In quotation part, the summation (i.e. total duration) of the duration of all video files, then obtains time started, root
According to time started and total duration, determine the termination time, thus obtain and be made up of time started and termination time
Time period.If the time period that certain index file is corresponding comprises the very first time, then server may determine that this
Index file contains the index of the video file corresponding with the very first time such that it is able to obtain video file
Play out；If the time period that all index files are corresponding does not all comprise the very first time, then server is permissible
Determine the local index file the most corresponding with the very first time, do not have and the very first time pair so that it is determined that local
The video file answered.
If 203 this locality do not have index file corresponding to the very first time, then according to locally stored index file,
Determined for the second time.
If this locality does not has index file corresponding to the very first time, then explanation this locality is the most corresponding with the very first time
Video file.Now, server can be by the index literary composition corresponding second time nearest with the very first time
Part is sent to live client, in order to live client obtains also according to the index file that the second time is corresponding
Play corresponding video file.
In actual applications, the index file that server local does not has the very first time corresponding mainly have two former
Cause: (1) very first time is more than the current live time, and it is corresponding that server does not the most collect the very first time
Live video stream；(2) if the video file stored before and index file can periodically be deleted by server,
And the very first time is less than the current live time, then server by the index file corresponding very first time and
Video file is deleted.
Accordingly, it is determined that the specific implementation of the second time can be: if the very first time is more than current live
Time, then the time difference terminating the time in the time period that the calculating very first time is corresponding with index file, and will
The termination time minimum with the time difference very first time was defined as the second time；If the very first time is less than current live
Time, then the time difference of the time started in the time period that the calculating very first time is corresponding with index file, and will
The time started minimum with the time difference very first time was defined as the second time.
204, the index file corresponding second time is sent to live client, in order to live client root
Obtain and playing video file according to the index in the index file that the second time is corresponding.
In actual applications, when server does not finds index file corresponding to the very first time, Ke Yizhi
Connect and the index file corresponding second time is sent to live client；First can also will comprise for the second time
Data response be sent to live client, then receive the number carrying for the second time that live client sends
According to request.
Wherein, data response is used for the index file indicating live second time of client application corresponding, i.e.
The response of these data is for notifying that live client does not has the index file of the corresponding very first time, and has correspondence
Index file and the time minimum with the time difference very first time were the second time, can apply for that the second time is corresponding
Index file.
Further, according to said method embodiment, an alternative embodiment of the invention additionally provides one
The device of direct broadcast time-shift, this device is applied to server side, as it is shown on figure 3, this device includes: obtain
Unit 31, lookup unit 32 and transmitting element 33.Wherein,
Acquiring unit 31, is used for obtaining request of data, and request of data is used for applying for index file, index literary composition
Part is for recording the index of video file；
In actual applications, server the live video stream of acquisition can be cut into multiple identical duration or
The ts file (i.e. video file) of different durations, then generates the m3u8 recording these ts file indexes
File (i.e. index file).When the ts file that live user end to server application is corresponding sometime,
Need first corresponding to this time of server application m3u8 file, then according to record in m3u8 file
The index of ts file obtains the address of ts file, and according to this address to server application ts file, obtains
Ts file is i.e. can play after ts file.In m3u8 file, record has time started (i.e. the 1st ts literary composition
The time started of part), the title (or being directly the address of ts file) of ts file and ts file
The contents such as duration.
It should be noted that request of data is carried the application time corresponding to index file that needs, i.e. use
Family drags the time after progress bar or current live time.
Search unit 32, when being used for first in the request of data that acquiring unit 31 obtains is searched in this locality
Between corresponding index file；
Wherein, the very first time is that the user carried in request of data drags time after progress bar or current
The live time.
Transmitting element 33, is that this locality does not has the very first time corresponding for working as the lookup result searching unit 32
Index file time, the index file corresponding second time is sent to live client, in order to live visitor
Family end obtains and playing video file according to the index in index file corresponding to the second time, wherein, the
Two times were the local index file containing correspondence and the time point minimum with the time difference of the very first time.
It should be noted that in actual applications, server is probably with live client and directly counts
According to alternately, it is also possible to indirectly carry out data interaction (i.e. needing other equipment to forward), at this not
Limit.
In actual applications, when the time after user drags progress bar exceedes the current live time, service
Device local the most not to should the index file of time and video file, if now transmitting element 33 will be with
The index file (i.e. current live time) that the time of this time difference time minimum is corresponding is sent to live client
End, it is possible to the video after instruction user's current live time cannot be watched, when can only watch current live
Between and the current live time before video.
The device of the direct broadcast time-shift that the embodiment of the present invention provides, it is possible to after obtaining request of data, in this locality
Search index file corresponding to the very first time in request of data, corresponding when not finding the very first time
During index file, directly send minimum with the time difference very first time to live client and contain corresponding index
The index file that second time of file is corresponding, in order to live client is according to index corresponding to the second time
Index in file obtains and playing video file, and thus may indicate that user is nearest away from the very first time
The time point having video data was the second time, and without sending miscue to live client, thus
User without restart video just can normal play, and then simplify user operation.
Further, as shown in Figure 4, transmitting element 33, including:
Determine subelement 331, for according to locally stored index file, determined for the second time；
Send subelement 332, for index literary composition corresponding to the second time that subelement 331 determines will be determined
Part is sent to live client.
In actual applications, the index file that server local does not has the very first time corresponding mainly have two former
Cause: (1) very first time is more than the current live time, and it is corresponding that server does not the most collect the very first time
Live video stream；(2) if the video file stored before and index file can periodically be deleted by server,
And the very first time is less than the current live time, then server by the index file corresponding very first time and
Video file is deleted.
Therefore, further, as shown in Figure 4, subelement 331 is determined, including:
Computing module 3311, by based on when the very first time more than the current live time time, calculate the very first time
The time difference terminating the time in the time period corresponding with index file；
Determine module 3312, for the end minimum with the time difference very first time obtained by computing module 3311
Only the time was defined as the second time；
Computing module 3311, is additionally operable to, when the very first time is less than the current live time, calculate the very first time
The time difference of the time started in time period corresponding with index file；
Determining module 3312, be additionally operable to obtain computing module 3311 is minimum with the time difference very first time
Time started was defined as the second time.
Further, transmitting element 33, it is additionally operable to be sent to directly the index file corresponding second time
Before broadcasting client, the data comprising for the second time response being sent to live client, data response is used
In the index file that instruction live second time of client application is corresponding, i.e. these data response is used for notifying directly
Broadcast client and there is no the index file of the corresponding very first time, and have index file and and the very first time of correspondence
The time of the minimum time difference was the second time, the index file that the second time of can applying for is corresponding.
As shown in Figure 4, this device also includes:
Receive unit 34, for receiving the request of data carrying for the second time that live client sends.
Further, as shown in Figure 4, unit 32 is searched, including:
Traversal subelement 321, for traveling through locally stored index file；
Determine subelement 322, corresponding for determining the index file that traversal subelement 321 currently travels through
Time period；
Wherein, when determining that subelement 322 determines time period corresponding to the index file of current traversal, can
To obtain the summation (i.e. total duration) of the duration of all video files in index file, then obtain and start
Time, finally according to time started and total duration, determine the termination time, thus obtain by the time started and
The time period of termination time composition.
Determine subelement 322, be additionally operable to when the time period comprises the very first time, determine the rope of current traversal
Quotation part is index file corresponding to the very first time；When the time period does not comprises the very first time, determine current
The index file of traversal is not index file corresponding to the very first time.
This device embodiment is corresponding with preceding method embodiment, and for ease of reading, this device embodiment is no longer
Detail content in preceding method embodiment is repeated one by one, it should be understood that in the present embodiment
Device corresponding can realize the full content in preceding method embodiment.
It should be noted that for the device of above-mentioned direct broadcast time-shift, every embodiment of the present invention uses and arrives
The function of unit module can pass through hardware processor (hardware processor) and realize.
It is exemplary, as it is shown in figure 5, Fig. 5 shows a kind of server that the embodiment of the present invention provides
Entity structure schematic diagram, this server may include that processor (processor) 41, communication interface
(Communications Interface) 42, memorizer (memory) 43 and bus 44, wherein, processor
41, communication interface 42, memorizer 43 complete mutual communication by bus 44.Communication interface 42
May be used for the information transmission between server and client.Processor 41 can call in memorizer 43
Logical order, to perform following method: obtain request of data, request of data is used for applying for index file,
Index file is for recording the index of video file；The very first time in request of data is searched in this locality is corresponding
Index file；If this locality does not has index file corresponding to the very first time, then by the rope corresponding second time
Quotation part is sent to live client, in order to live client is according in index file corresponding to the second time
Index obtain and playing video file, wherein, the second time be local containing corresponding index file and
The time point minimum with the time difference of the very first time.
Additionally, the logical order in above-mentioned memorizer 43 can be realized by the form of SFU software functional unit
And during as independent production marketing or use, can be stored in a computer read/write memory medium.
Based on such understanding, the portion that prior art is contributed by technical scheme the most in other words
Dividing or the part of this technical scheme can embody with the form of software product, this computer software produces
Product are stored in a storage medium, including some instructions with so that a computer equipment (can be
Personal computer, server, or the network equipment etc.) perform method described in each embodiment of the present invention
All or part of step.And aforesaid storage medium includes: USB flash disk, portable hard drive, read only memory
(Read-Only Memory, ROM), random access memory (Random Access Memory,
RAM), the various medium that can store program code such as magnetic disc or CD.
Device embodiment described above is only schematically, wherein said illustrates as separating component
Unit can be or may not be physically separate, the parts shown as unit can be or
Person may not be physical location, i.e. may be located at a place, or can also be distributed to multiple network
On unit.Some or all of module therein can be selected according to the actual needs to realize the present embodiment
The purpose of scheme.Those of ordinary skill in the art are not in the case of paying performing creative labour, the most permissible
Understand and implement.
Through the above description of the embodiments, those skilled in the art is it can be understood that arrive each reality
The mode of executing can add the mode of required general hardware platform by software and realize, naturally it is also possible to by firmly
Part.Based on such understanding, the portion that prior art is contributed by technique scheme the most in other words
Dividing and can embody with the form of software product, this computer software product can be stored in computer can
Read in storage medium, such as ROM/RAM, magnetic disc, CD etc., including some instructions with so that one
Computer equipment (can be personal computer, server, or the network equipment etc.) performs each to be implemented
The method described in some part of example or embodiment.
Last it is noted that above example is only in order to illustrate technical scheme, rather than to it
Limit；Although the present invention being described in detail with reference to previous embodiment, the ordinary skill of this area
Personnel it is understood that the technical scheme described in foregoing embodiments still can be modified by it, or
Person carries out equivalent to wherein portion of techniques feature；And these amendments or replacement, do not make corresponding skill
The essence of art scheme departs from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. the method for a direct broadcast time-shift, it is characterised in that described method includes:
Obtaining request of data, described request of data is used for applying for that index file, described index file are used for remembering
The index of record video file；
Index file corresponding to the very first time in described request of data is searched in this locality；
If this locality does not has index file corresponding to the described very first time, then by the index literary composition corresponding second time
Part is sent to live client, in order to described live client is civilian according to the index that described second time is corresponding
Index in part obtains and playing video file, and wherein, described second time is local containing corresponding rope
Quotation part and the time point minimum with the time difference of the described very first time.
Method the most according to claim 1, it is characterised in that by the index literary composition corresponding second time
Part is sent to live client, including:
According to locally stored index file, determine described second time；
The index file corresponding described second time is sent to described live client.
Method the most according to claim 2, it is characterised in that according to locally stored index file,
Determine described second time, including:
If the described very first time is more than the current live time, then calculate the described very first time and index file pair
The time difference terminating the time in the time period answered, and by the termination time minimum with the described time difference very first time
It is defined as described second time；
If the described very first time is less than the current live time, then calculate the described very first time and index file pair
The time difference of the time started in the time period answered, and by the time started minimum with the described time difference very first time
It is defined as described second time.
4. according to the method according to any one of claim 1-3, it is characterised in that by the second time
Before corresponding index file is sent to live client, described method farther includes:
The data comprising described second time response is sent to described live client, and described data respond
For indicating index file corresponding to the second time described in live client application；
Receive the request of data carrying described second time that described live client sends.
Method the most according to claim 4, it is characterised in that search described request of data in this locality
In index file corresponding to the very first time, including:
Travel through locally stored index file；
Determine the time period that the index file of current traversal is corresponding；
If the described time period comprises the described very first time, it is determined that the index file of described current traversal is institute
State index file corresponding to the very first time；
If the described time period does not comprise the described very first time, it is determined that the index file of described current traversal is not
It is index file corresponding to the described very first time.
6. the device of a direct broadcast time-shift, it is characterised in that described device includes:
Acquiring unit, is used for obtaining request of data, and described request of data is used for applying for index file, described
Index file is for recording the index of video file；
Search unit, first in searching, in this locality, the described request of data that described acquiring unit obtains
The index file that time is corresponding；
Transmitting element, is used for when the lookup result of described lookup unit is that this locality does not has the described very first time pair
During the index file answered, the index file corresponding second time is sent to live client, in order to described
Live client obtains and plays video literary composition according to the index in index file corresponding to described second time
Part, wherein, described second time be local containing corresponding index file and with the described very first time time
The time point that difference is minimum.
Device the most according to claim 6, it is characterised in that described transmitting element, including:
Determine subelement, for according to locally stored index file, determine described second time；
Send subelement, for by the index literary composition corresponding described described second time determining that subelement determines
Part is sent to described live client.
Device the most according to claim 7, it is characterised in that described determine subelement, including:
Computing module, is used for when the described very first time is more than the current live time, when calculating described first
Between time difference terminating the time in time period corresponding with index file；
Determine module, for the termination minimum with the described time difference very first time obtained by described computing module
Time is defined as described second time；
Described computing module, is additionally operable to, when the described very first time is less than the current live time, calculate described
The time difference of the time started in the time period that the very first time is corresponding with index file；
Described determining module, be additionally operable to obtain described computing module is minimum with the described time difference very first time
Time started be defined as described second time.
9. according to the device according to any one of claim 6-8, it is characterised in that described transmitting element,
It is additionally operable to before the index file corresponding second time is sent to live client, described will be comprised
The data response of two times is sent to described live client, and the response of described data is used for indicating live client
The index file that end application described second time is corresponding；
Described device farther includes:
Receiving unit, the data carrying described second time sent for receiving described live client please
Ask.
Device the most according to claim 9, it is characterised in that described lookup unit, including:
Traversal subelement, for traveling through locally stored index file；
Determine subelement, for determining the time that index file that described traversal subelement currently travels through is corresponding
Section；
Described determine subelement, be additionally operable to when the described time period comprises the described very first time, determine described
The index file of current traversal is index file corresponding to the described very first time；Do not comprise when the described time period
During the described very first time, determine that the index file of described current traversal is not rope corresponding to the described very first time
Quotation part.
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| CN201510848876.6A CN105872797A (en) | 2015-11-27 | 2015-11-27 | Live broadcast time shifting method and device |
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