CN104735089B - content processing method and device - Google Patents
content processing method and device Download PDFInfo
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- CN104735089B CN104735089B CN201510184881.1A CN201510184881A CN104735089B CN 104735089 B CN104735089 B CN 104735089B CN 201510184881 A CN201510184881 A CN 201510184881A CN 104735089 B CN104735089 B CN 104735089B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
Abstract
Provide a kind of content processing method and content processing apparatus of client.The content processing method of the client includes：Multimedia is received from server indicate description MPD by client；It is based on MPD by client and content is provided.Wherein if formerly the summation in the section time limit of the timeshiftBufferDepth and first MPD of MPD is more than the value obtained by subtracting the availabilityStarttime of current MPD from NOW, then the MPD includes the list of combined segment, the combined segment includes the section listed in first MPD, and wherein timeshiftBufferDepth is the time limit of live content being formerly partly buffered in server, availabilityStarttime is that become the useful time and NOW be the time point that user is watching live content to MPD.
Description
The application be the applying date be on April 26th, 2011, application No. is 201110104767.5 it is entitled " play
The divisional application of the application case of the method and apparatus of live content ".
Technical field
The present invention relates to the live content of digit broadcasting system (live content) processing methods.More specifically, this hair
A kind of bright content processing method for being related to client and a kind of content processing apparatus of client, and further relate to one kind and be used for
The method that the playlist of inclusive segment is provided to client, the inclusive segment can be adaptive with hypertext transfer protocol (HTTP)
It spreads in the live stream service of transport format offer and accesses.
Background technology
In order to receive and while broadcasting content, so that terminal can pass through the change that seamless switching adapts to available bandwidth
The mode of change to client device provide content, it is necessary to the terminal be provided previously about with for inclusive segment reproduction time and
The information of the relevant content of bandwidth.The file for being used for transmission the information about content is referred to as multimedia expression description
(Multimedia Presentation Description, MPD) file.In order to when changing environment in normally support more matchmakers
Body transmits, and should update the MPD file from server transport to client over time.In real-time live broadcast
In the case of, when generating live content, it is necessary to update corresponding MPD file.
Fig. 1 is the flow chart for illustrating the process for handling live content in server according to prior art.
With reference to figure 1, when step 111 is received to the broadcast time request of past content, server is in step
The availability (that is, whether server check content is saved in the server) of 113 inspection contents.If determined in step 113
The content can be used on the server, then corresponding content is sent to client by server in step 115.On the contrary, if this is interior
Appearance is unavailable on the server, then error message is sent to client by server in step 117.
During illustrating in Fig. 1, client request content, and it is not aware that whether the content currently can play, because
This, when inclusive segment can be used, server sends the inclusive segment, on the contrary, server sends refuse information.However, such content
Processing method can lead to the wasting of resources and delaying content, cause the decline of content catering service quality.
Invention content
Each aspect of the present invention is to solve the problems, such as at least the above and/or defect, and provide at least the following advantages.
Therefore, it is an aspect of the present invention to provide a kind of content processing method of client, the method includes：Pass through visitor
Family end receives multimedia from server and indicates description MPD；It is based on MPD by client and content is provided, wherein if first MPD
The summation in the section time limit of timeshiftBufferDepth and first MPD is more than by subtracting current MPD's from NOW
AvailabilityStarttime and the value obtained, then the MPD includes the list of combined segment, and the combined segment includes first MPD
In the section listed, and wherein timeshiftBufferDepth is formerly partly being buffered in server for live content
Time limit, availabilityStarttime are that become the useful time and NOW be that user is watching in fact to MPD
The time point of appearance.
Another aspect of the present invention is to provide a kind of content processing apparatus of client, and described device includes：First more matchmakers
Body surface shows description MPD memories, configures to store the MPD received from server；And controller, configuration provide to be based on MPD
Content.Wherein if formerly MPD timeshiftBufferDepth and first MPD the section time limit summation be more than by from
The value for subtracting the availabilityStarttime of current MPD in NOW and obtaining, then the MPD includes the list of combined segment, institute
It includes the section listed in first MPD to state combined segment, and wherein timeshiftBufferDepth is the first portion of live content
Divide the time limit being buffered in server, availabilityStarttime, which is MPD, becomes useful time and NOW
It is the time point that user is watching live content.
Another aspect of the present invention is to provide a kind of live content playing method and device of digit broadcasting system, is connecing
While the live streaming service that receipts are provided with hypertext transfer protocol (HTTP) self adaptation stream transformat by server
The playlist of inclusive segment can be generated.That is, each aspect of the present invention provides a kind of client use in live steaming transfer
Seamless broadcast in the multimedia that receives indicate that description (MPD) obtains the method in the list of current time Playable content section.
Another aspect of the present invention is to provide a kind of the live content playback method and device of digit broadcasting system, makes
Client can provide a user currently playable playlist, to the content for preventing client request from not can play.
Another aspect of the present invention is to provide a kind of the live content playback method and device of digit broadcasting system, when in reality
When the intermediate update MPD of condition steaming transfer, it includes to be arranged from the section of new and old MPD that the content supplier of server, which is generated,
Available section of available segments list in table, and provide this section of list to client.
First exemplary embodiment according to the present invention, server send the MPD with content correlated information to client
File.Client checks playable inclusive segment in real time using MPD file, preserves first content correlated information, and pass through ginseng
The playable section of the first content correlated information retrieval content is examined to generate playlist.When the user of client uses broadcasting
When the request for resetting first content is made in list, client determines whether requested content can play and inform the user really
Determine result.
Second exemplary embodiment according to the present invention, when the content supplier of server side is in the centre of live steaming transfer
When updating MPD, server retrieves playable section from the section list of new MPD and first MPD, to generate playlist, and
And the playlist is sent to client.
According to an aspect of the present invention, a kind of content processing method that server is flowed to client offer is provided.It is described
Method includes：If first multimedia indicates the section time limit of the timeshiftBufferDepth and first MPD of description (MPD)
Summation is more than the value obtained by subtracting the availabilityStarttime of current MPD from NOW, then it includes group to generate
The MPD of the list of section is closed, the combined segment includes the section listed in first MPD；MPD is sent to client.
In exemplary realization, generating combination MPD includes：In the availabilityStarttime and NOW of current MPD
Between interval in current MPD sections and be present in (the first MPD's of timeshiftBufferDepth- of the first MPD of NOW-
Section the time limit) start and first MPD sections in the interval that CheckTime terminates.
In exemplary realization, generating combination MPD includes：If the summation of timeshiftBufferDepth and section time limit
Less than or equal to the value obtained by subtracting the availabilityStarttime of current MPD from NOW, it includes working as to generate
The MPD of the list of the section of preceding MPD.
According to an aspect of the present invention, a kind of content processing method of client is provided.The method includes：It receives more
Media representation describes (MPD)；If the summation in the section time limit of the timeshiftBufferDepth and first MPD of first MPD is big
In the value obtained by subtracting the availabilityStarttime of current MPD from NOW, then it includes in first MPD to generate
The list of the combined segment for the section listed.
In exemplary realization, generating combined segment includes：The availabilityStarttime and NOW of current MPD it
Between interval in current MPD sections and be present in (the section of the first MPD of timeshiftBufferDepth- of the first MPD of NOW-
Time limit) start and first MPD sections in the interval that CheckTime terminates.
In exemplary realization, generating combined segment includes：If the summation of timeshiftBufferDepth and section time limit
Less than or equal to the value obtained by subtracting the availabilityStarttime of current MPD from NOW, then generate current
The list of the section of MPD.
In exemplary realization, the method further includes：When request content playback time, the section for the content that request is reset is determined
With the presence or absence of in list；When being present in list with the section for the content reset when request, for the content requests of request playback
Server, and play the content for asking to reset for responding the request and receiving.
In exemplary realization, the method further includes：When request content playback time, the list is shown to user；When
User's request content playback time for the content requests server that request is reset, and plays and responds the request and asking for receiving
Seek the content of playback.
According to an aspect of the present invention, a kind of contents processing dress for providing the server of stream to client is provided
It sets.Described device includes：First multimedia indicates description (MPD) memory, for storing first MPD；And playlist retrieval
Module, if the summation in the section time limit of timeshiftBufferDepth and first MPD for first MPD be more than by from
The value for subtracting the availabilityStarttime of current MPD in NOW and obtaining, then generation includes the list of combined segment
MPD, the combined segment includes the section listed in first MPD, wherein MPD is sent to client by the server.
In exemplary realization, the combined segment includes：The availabilityStarttime and NOW of current MPD it
Between interval in current MPD section and be present in (the first MPD's of timeshiftBufferDepth- of the first MPD of NOW-
Section the time limit) start and first MPD sections in the interval that CheckTime terminates.
In exemplary realization, which further includes：If timeshiftBufferDepth and the summation in section time limit are small
In or equal to the value that is obtained by subtracting the availabilityStarttime of current MPD from NOW, then it includes working as to generate
The MPD of the list of the section of preceding MPD.
According to an aspect of the present invention, a kind of content processing apparatus of client is provided.Described device includes：It is formerly more
Media representation describes (MPD) memory, for storing the MPD received；With playlist retrieval module, if for first
The summation in the section time limit of the timeshiftBufferDepth of MPD and first MPD is more than by subtracting current MPD's from NOW
AvailabilityStarttime and the value obtained generate the list for the combined segment for including the section listed in first MPD.
In exemplary realization, the combined segment includes：The availabilityStarttime and NOW of current MPD it
Between interval in current MPD sections and be present in (the section of the first MPD of timeshiftBufferDepth- of the first MPD of NOW-
Time limit) start and the section of first MPD in the interval that CheckTime terminates.
In exemplary realization, described device further includes：If the summation of timeshiftBufferDepth and section time limit
Less than or equal to the value obtained by subtracting the availabilityStarttime of current MPD from NOW, then client life
At the list of the section of current MPD.
According to an aspect of the present invention, a kind of content processing method of system is provided.The method includes：If formerly
Multimedia indicates that the summation in the section time limit of the timeshiftBufferDepth and first MPD of description (MPD) is more than by from NOW
In subtract the availabilityStarttime of current MPD and the value that obtains, then generated by server include combined segment row
The MPD of table, the combined segment include the section listed in first MPD；MPD is sent to client；By client by current MPD
In include the list of section be stored as playlist；When request content playback time, determine content that request is reset whether there is in
In playlist；With when request reset content be present in playlist when, for request reset content requests server,
And play the content that the request received in response to the request is reset.
Description of the drawings
From the following description carried out in conjunction with attached drawing, the upper surface of certain exemplary embodiments of the invention and other aspects,
Feature and advantage will be apparent from, wherein：
Fig. 1 is the flow chart for illustrating the process for handling live content in server according to prior art；
Fig. 2 is the figure of the timeline used in diagram live content processing method according to an exemplary embodiment of the present invention；
Fig. 3 is the stream of the operation of the client in diagram live content processing method according to an exemplary embodiment of the present invention
Cheng Tu；
Fig. 4 is the configuration of the client of diagram support live content processing method according to an exemplary embodiment of the present invention
Block diagram；
Fig. 5 is illustrated in live content processing method according to an exemplary embodiment of the present invention between client and server
Message flow signaling diagram.
Through attached drawing, it is to be noted that describe same or analogous component, feature and knot using identical reference numeral
Structure.
Specific implementation mode
The following description that refer to the attached drawing is provided, with the sheet for assisting comprehensive understanding such as to be limited by claims and its equivalent
The exemplary embodiment of invention.It includes the various specific details that auxiliary understands, but these will be considered as only example
Property.It therefore, those of ordinary skill in the art will understand that can without departing substantially from spirit and scope of the invention
With carry out embodiment described herein variations and modifications.In addition, succinct for clarity, it is convenient to omit known function and structure
The description made.
The term and word used in described and claimed below is not limited to document meaning, but is only used by inventor
To make the understanding of the present invention clearly consistent.Therefore, for it will be apparent to those skilled in the art that the present invention exemplary reality
The following description for applying example is merely provided for illustration purpose, rather than hair defined in limitation appended claims and its equivalent
Bright purpose.
It will be appreciated that the singulative of "one" and "the" includes plural reference, unless context clearly contrary.
Thus, for example, including the reference to one or more surfaces to the reference of " assembly surface ".
Although utilizing specific characteristic (such as the physical name defined in open internet protocol TV (IPTV) forum (OIPF)
Claim) carry out exemplary embodiment description, but specific characteristic and entity name be used only for help understand the present invention example
Property embodiment.However, it should be obvious to a one skilled in the art that in those no features and using without defined in OIPF
Title entity in the case of the present invention may be implemented.Therefore, it is convenient to omit the known function that is incorporated to herein and structure
Detailed description, to avoid the theme of fuzzy exemplary embodiment of the present invention.
It is described using exemplary embodiment of the present invention, to solve above-mentioned technical problem.Defined in OIPF
Entity name be described, to simplify the explanation of exemplary embodiment of the present invention, however, it be not intended to limit the present invention
Scope, and can be applied to the system with similar techniques background.
Exemplary embodiment of the present invention has been contemplated for the content in the increasingly increased environment of use of online content
Seamless transit purpose.According to the variation of available transmission bandwidth and/or the performance of user equipment, skill is transmitted using self adaptation stream
Art using variable bit-rate to send content.In self adaptation stream transmission, user terminal is with according to hypertext transfer protocol
(HTTP) section (segment) that divides receives and broadcasting content for unit.However, the invention is not limited thereto, and can make
Self adaptation stream transmission is provided with other suitable agreements or the communication technology.
The first exemplary embodiment of the present invention focus on it is a kind of when client with HTTP self adaptation streams transformat just from
The device and method that the playlist that client can access is obtained when server receives live stream.The second of the present invention is exemplary
Embodiment is focused on a kind of for being given birth to when live stream is just sent to client by server with HTTP self adaptation stream transformats
At the device and method for concurrently sending playlist that client can access.
In the live content processing method according to the digital broadcasting of the first exemplary embodiment of the present invention, server will be interior
Hold relevant information to be sent to client and update the content correlated information.Client obtains the playable section of content in real time, protects
In the presence of first content correlated information, the first content correlated information is searched for retrieve the playable section of content, and generate
Including this can play the playlist of section.When user is using the first content of corresponding playlist request, client checks institute
The playability of the content of request, and inform the user playability result.
When client handles live content in the broadcast system with content delivering server and content providing server
When, client receives updated multimedia from content delivering server and indicates description (MPD) file (that is, current MPD file),
And it is extracted from first MPD and current MPD file and can play section, to generate the playlist of playable section.If from
Family receives content playback request, then whether in the play list client determines requested content, to exist when the content
Request content provides server and sends the content when in playlist.When content not in the play list when, content catering service
Error message is output to user by device, to which user does not ask the content to content providing server.
After generating playlist, client to the present customers playlist, as a prompt to user with
One of the content listed in request playlist.Before making content playback request, user this can broadcast to client request
Table is emplaced, to which user can be supplied to the playlist of user to ask one in Playable content by reference to client
It is a.In the second exemplary embodiment, when live steaming transfer medium content provider updates MPD, content supplier generates
Including from the playlist of the current MPD and first MPD playable sections extracted, and the playlist is sent to client.
Fig. 2 is the figure of the timeline used in diagram live content processing method according to an exemplary embodiment of the present invention.
It is being used in the exemplary embodiment of Fig. 2 to meet third generation affiliate with time correlation term with reference to figure 2
Project (3GPP) standard criterion.With reference to figure 2, " NOW " indicates that user is watching the time point of live content,
" timeShiftBufferdepth " indicate live content formerly be partly buffered in the content memorizer of server when
Between the time limit.Here, single MPD file can be with the timeShiftBufferdepth of different length.Term " the section time limit
(segment duration) " indicates that the time span of the section of content, " CheckTime " indicate that client is sent out to service provider
Send the time point for the newer MPD file request message of MPD file.In addition, " availabilityStartTime " is indicated
MPD file becomes the useful time.
Fig. 3 is the stream of the operation of the client in diagram live content processing method according to an exemplary embodiment of the present invention
Cheng Tu.
With reference to figure 3, client based on the acquisition of information in MPD file addressable section of current point in time list.
It is exactly, according to the first exemplary embodiment, the mistake of MPD file update playlist to be utilized in the seamless broadcast of live steaming transfer
Cheng Zhong, client obtain the list of the playable section of content in current point in time.As shown in figure 3, when arrived CheckTime
When, in step 311, client is determined by by the timeShiftBufferdepth of first MPD file and first MPD file
Whether the value that the section time limit is added and obtains is more than by subtracting the availabilityStartTime of Current Content section from NOW
The value of acquisition, the first MPD file are followed by the MPD file of Current Content section later.In other words, client determines following
Whether expression formula is true：[the section time limit in the first MPD of timeshiftbufferdepth+ in first MPD]>[NOW- is current
AvailabilityStartTime in MPD].If [the timeshiftbufferdepth in first MPD in step 311
+ first section time limit in MPD] be more than [availabilityStartTime in the current MPD of NOW-], then client is in step
Some sections in the section of first MPD file and section from current MPD file are combined as a section list in 313.If in step
[the section time limit in the first MPD of timeshiftbufferdepth+ in first MPD] is not more than [in the current MPD of NOW- in 311
AvailabilityStartTime], then follow the steps 315, and client is from the current MPD for the section being spaced at present
Middle searched segments list, the current interval can be expressed as [NOW-timeShiftBufferDepth- time limits] start and
CheckTime terminates.
Specifically, if determined [in the first MPD of timeshiftbufferdepth+ in first MPD in step 311
The section time limit] be more than [availabilityStartTime in the current MPD of NOW-], then client is subordinated to the section of first MPD
The inclusive segment that can play in current time is retrieved in the middle.That is, client retrieval can be by by first MPD's
The section time limit of timeShiftBufferDepth and first MPD subtract each other from current time NOW and time point of value for obtaining with
The list of the section played between CheckTime.Client is also retrieved to be subordinated in the section of current MPD and can be broadcast in current time NOW
The section put.That is, client retrieval can play between the availabilityStartTim and current time NOW of current MPD
Section list.Started in [the section time limit of the first MPD of timeShiftBufferDepth- of the first MPD of NOW-] by combination
And ending at the process of the section of the playable current MPD in interval of the CheckTime of first MPD, client is generated current
The playlist of section playable time point NOW.
Client preserves the playlist generated as described above.Later, if user asks to play at first time point
The section of the content of broadcasting, and if requested content is in the playlist preserved, client is in the corresponding time
Point sends the request message to this section to server.Otherwise, error message is sent to user by server, without being provided to content
Corresponding section is transmitted in server request.Client can be configured to inform the user current point in time playable time point, from
And user need not ask the content that not can play all for naught.
Fig. 4 is the diagram server or client according to an exemplary embodiment of the present invention for supporting live content processing method
Configuration block diagram.
With reference to figure 4, first MPD memories 410 store the first MPD other than the MPD of currently playing inclusive segment.It broadcasts
Put the list that list retrieval module 420 retrieves the section that client can be played with request server.Playlist retrieval module 420 can
To generate playlist while the process described in executing the embodiment such as Fig. 3.The retrieval of adaptive algorithm actuator 430 is suitable
The section of the content of available bandwidth and equipment performance for client.When playlist detector 440 determines that user is requested
Between section at point whether be included in the playlist generated by playlist retrieval module 420.
Fig. 5 is illustrated in live content processing method according to an exemplary embodiment of the present invention between client and server
Message flow signaling diagram.
With reference to figure 5, content delivering server 505 is to generate the service of the MPD for providing content to client 503
Device, and content delivering server 505 belongs to service provider.If user 501 is in step 511 by content request message 511
503 are sent to, then self adaptation stream content request message 513 is sent to content delivering server by client 503.Once receiving
Self adaptation stream content request message, content delivering server 505 just configure the MPD#1 as the first MPD file in step 515
File, for supporting the self adaptation stream of content to transmit.Content delivering server 505 is then sent in step 517 to client 503
The MPD#1 files generated for transmission corresponding contents.If MPD#1 files are received, client 503 is by the independent of content
Section is connected to the uniform resource locator (URL) that live content provides server 507.In other words, client 503 is in step
The content that 519 requests are positioned via the URL of corresponding document, and live content provides server 507 in step 521 by client
503 requested sections are sent to client 503.Therefore, user 501 can such as requested content of viewing shown in step 523.
When service provider updates MPD, content delivering server 505 just configures in step 525 and is used as next MPD file
MPD#2 files, for supporting the self adaptation stream of content to transmit.Meanwhile client 503 preserves in step 527 and is used as first MPD
The MPD#1 files of file monitor signaling to detect the arrival of the CheckTime of MPD#1 files in step 529.When having arrived
When up to CheckTime, client 503 sends MPD to content delivering server 505 in step 531 and updates request message.Once connecing
It receives MPD and updates request message, content delivering server 505 sends MPD#2 files in step 533 to client 503.
If receiving MPD#2 files, in step 535, shown in the exemplary embodiment of client 503 according to fig. 3
Process generate playlist.Here, first MPD can be MPD#1, and current MPD can be MPD#2.
In step 537, user resets the content at first time point to the request of client 503.Then, in step 539, visitor
Family end 503 determines that the section at the time point asked by user 503 whether there is in current play list.If requested
Inclusive segment is present in the playlist that step 535 generates, then in step 541, client provides server to live content
The 507 corresponding sections of request, and live content provides server 507 and is sent to client by requested section in step 543
503.Therefore, user can watch the content at first time point in step 545.If at the time point of user's request
Section not in current play list, then error message is output to user 501 by client 503 in step 551.
As described above, if user's request is first in the state of when being generated in client 503 and preserving playlist
Content playback at time point, then client 503, which determines, asks the content reset to whether there is in playlist.If request
The content of playback is present in playlist, then the control of client 503 is reset so that while executing the process at step 540
User 501 can watch from live content and provide the content that server 507 is asked and received.Otherwise, if asking to reset interior
Appearance is not present in playlist, then error message is output to user 501 by client 503 in step 551, without to fact
Content providing server 507 asks the content reset.In this way, content according to an exemplary embodiment of the present invention
Treating method and apparatus can prevent client from unnecessarily asking not available content, to reduce the wasting of resources and avoid
To the replay delay of user.
Client 503 can be configured to the playlist for the section that displaying currently can play, to which user does not ask to broadcast
The section put.It is, client 503 may be displayed on the playlist of step 535 generation, to which user 501 checks the broadcasting
List.In this case, user 501 only can make request to the playable section listed in playlist.Show another
Example implementations, user can ask playlist to client 503, can be provided by reference to client 503 to user
Playlist asks available content.
The second exemplary embodiment of the present invention is described below.
In the second exemplary embodiment of the present invention, when generating the new MPD for updating MPD, server generates packet
Include the new MPD of still addressable section in the section managed in first MPD of list (i.e. playlist).Server is to client
503 transmission of end includes the new MPD of newly-generated playlist, to update first MPD.In the second exemplary implementation of the present invention
In example, the operation of the exemplary embodiment of Fig. 3 can be executed by content delivering server 505.When content supplier updates
When MPD for live streaming service, new MPD must include available section of all sections to first MPD.When first MPD's
TimeShiftBufferdepth and the summation in section time limit are more than by subtracting current MPD's from NOW
AvailabilityStartTime and when the value obtained, new MPD includes all media segments, wherein media segment and the period
At the beginning of summation be present in since the time limit of NOW-timeshiftBufferDepth- current MPD and first MPD and
In the interval that CheckTime terminates.
When the timeShiftBufferdepth and the summation in section time limit of first MPD are more than by being subtracted from NOW currently
The availabilityStartTime of MPD and when the value obtained, playlist includes all media segments, wherein media segment and
Summation at the beginning of the period is present in the phase in NOW-timeShiftBufferDepth- current MPD and first MPD
In interval between limit and CheckTime.
When the summation in timeShiftBufferdepth and section time limit is more than by subtracting current MPD's from NOW
AvailabilityStartTime and when the value obtained, new MPD includes all media segments, wherein respective media section and this when
Between summation at the beginning of section being started with the time limit of NOW-timeshiftBufferDepth- current MPD and first MPD and
There is the mediaPresentationDuration being finally worth with CheckTime, NOW and availabilityStartTime+
In one end interval in.
When content supplier's update is used for the MPD of live steaming transfer, new MPD should include comprising the section in first MPD
All available segments of list.If the timeShiftBuffer and the summation in the section time limit in first MPD in first MPD are more than
AvailabilityStartTime in the current MPD of NOW-, then playlist should include the combination of each media segment, for matchmaker
Body section is fallen in such interval at the beginning of media segment with the summation of time started period, with NOW-
The timeShiftBufferDepth- time limits are started and are terminated with the CheckTime of current MPD and first MPD.
In the fact of the digit broadcasting system including at least one server and client side accoding to exemplary embodiment
In content processing method and device, when playback request of user's input pin to specific content, if the content is available, client
Corresponding content is asked to server, otherwise, error message is output to user by client.Therefore, live content of the invention
Treating method and apparatus can prevent the request to unavailable content when handling the live content of digit broadcasting system.Therefore,
The level of resources utilization and contents processing efficiency can be improved, and reduces replay delay, service quality is promoted to improve.
Although the present invention, the skill of this field has shown and described by reference to certain exemplary embodiments of the present invention
Art personnel will be understood that, without departing substantially from the spirit and scope of the invention defined by appended claims and its equivalent the case where
Under, various change in form and details can be carried out wherein.
Claims (12)
1. a kind of content processing method of client, the method includes：
Present multimedia, which is received, from server indicates description MPD；
The request for section is sent to server based on current MPD,
Wherein if the phase of the section of the time limit (timeshiftBufferDepth) and first MPD of the buffer of first MPD
The summation of limit is more than the time for becoming useful by subtracting current MPD from determining time point (NOW)
(availabilityStarttime) value obtained, then the current MPD includes the information about the section in first MPD, and
The time limit in its stage casing includes the information about the time span in the expression time limit for section.
2. the method as described in claim 1 further includes：
The list based on current MPD and addressable section of first MPD is generated,
Wherein addressable section of list includes：The information of the combination of section about current MPD and first MPD, wherein described section
At the beginning of with the period at the beginning of summation fall in the time limit from section described in NOW-timeshiftBufferDepth-
Start and in the interval of a value end of CheckTime and NOW.
3. method as claimed in claim 2, wherein if time limit of the section of timeshiftBufferDepth and current MPD
Summation is less than or equal to the value obtained by subtracting the availabilityStarttime of current MPD from NOW, then can visit
The list for the section asked includes the information about the section of current MPD.
4. method as claimed in claim 2, further includes：
If receiving content playback request, identify whether addressable section of list includes being asked about corresponding to content playback
The information for the section asked；And
If addressable section of list includes the information about the section asked corresponding to content playback, transmission corresponds to
The request of the section of content playback request.
5. method as claimed in claim 2, further includes：
Show addressable section of list.
6. method as claimed in claim 4, further includes：
If addressable section of list does not include the information about the section asked corresponding to content playback, mistake is provided and is disappeared
Breath.
7. a kind of content processing apparatus of client, described device include：
Transceiver is configured to send and receive signal；With
Controller couples the transceiver and configures：
Present multimedia, which is received, from server indicates description MPD；
The request for section is sent to server based on current MPD,
Wherein if the phase of the section of the time limit (timeshiftBufferDepth) and first MPD of the buffer of first MPD
The summation of limit is more than the time for becoming useful by subtracting current MPD from determining time point (NOW)
(availabilityStarttime) value obtained, then the current MPD includes the information about the section in first MPD, and
The time limit in its stage casing includes the information about the time span in the expression time limit for section.
8. device as claimed in claim 7, the wherein controller are further configured to：
The list based on current MPD and addressable section of first MPD is generated,
Wherein addressable section of list includes：The information of the combination of section about current MPD and first MPD, wherein described section
At the beginning of fall with the summation of time started period and opened from the time limit of section described in NOW-timeshiftBufferDepth-
Begin and in the interval of a value end of CheckTime and NOW.
9. device as claimed in claim 8, wherein if time limit of the section of timeshiftBufferDepth and current MPD
Summation is less than or equal to the value obtained by subtracting the availabilityStarttime of current MPD from NOW, then can visit
The list for the section asked includes the information about the section of current MPD.
10. device as claimed in claim 8, wherein controller are further configured to：
If receiving content playback request, identify whether addressable section of list includes being asked about corresponding to content playback
The information for the section asked；And
If addressable section of list includes the information about the section asked corresponding to content playback, transmission corresponds to
The request of the section of content playback request.
11. device as claimed in claim 8, wherein controller are further configured to：
Control described device shows addressable section of list.
12. device as claimed in claim 11, wherein controller are further configured to：
If addressable section of list does not include the information about the section asked corresponding to content playback, mistake is provided and is disappeared
Breath.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2010-0038677 | 2010-04-26 | ||
| KR20100038677 | 2010-04-26 | ||
| KR10-2010-0039289 | 2010-04-28 | ||
| KR1020100039289A KR101652255B1 (en) | 2010-04-26 | 2010-04-28 | Method for playing of live contents in broadcasting system |
| CN201110104767.5A CN102238419B (en) | 2010-04-26 | 2011-04-26 | Method and apparatus for playing live content |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110104767.5A Division CN102238419B (en) | 2010-04-26 | 2011-04-26 | Method and apparatus for playing live content |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104735089A CN104735089A (en) | 2015-06-24 |
| CN104735089B true CN104735089B (en) | 2018-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510184881.1A Active CN104735089B (en) | 2010-04-26 | 2011-04-26 | content processing method and device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5787981B2 (en) |
| KR (1) | KR101652255B1 (en) |
| CN (1) | CN104735089B (en) |
| AU (1) | AU2011245930B2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10735486B2 (en) * | 2012-12-28 | 2020-08-04 | Qualcomm Incorporated | Device timing adjustments and methods for supporting dash over broadcast |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003235032A (en) * | 2002-02-08 | 2003-08-22 | Nippon Telegr & Teleph Corp <Ntt> | Distribution information providing method, apparatus, and program thereof |
| JP4303085B2 (en) * | 2003-10-23 | 2009-07-29 | 三菱電機株式会社 | Content provision service system |
| US8504709B2 (en) * | 2006-05-03 | 2013-08-06 | Sony Corporation | Adaptive streaming buffering |
| US9432433B2 (en) * | 2006-06-09 | 2016-08-30 | Qualcomm Incorporated | Enhanced block-request streaming system using signaling or block creation |
| JP2009260947A (en) * | 2008-03-17 | 2009-11-05 | Sharp Corp | Vod content selecting and reproducing apparatus |
| JP5667646B2 (en) * | 2010-01-18 | 2015-02-12 | テレフオンアクチーボラゲット エル エム エリクソン（パブル） | Method and apparatus for HTTP media stream delivery |
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2010
- 2010-04-28 KR KR1020100039289A patent/KR101652255B1/en active IP Right Grant
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- 2011-04-19 AU AU2011245930A patent/AU2011245930B2/en not_active Ceased
- 2011-04-19 JP JP2013507868A patent/JP5787981B2/en not_active Expired - Fee Related
- 2011-04-26 CN CN201510184881.1A patent/CN104735089B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| AU2011245930A1 (en) | 2012-11-08 |
| KR101652255B1 (en) | 2016-09-09 |
| CN104735089A (en) | 2015-06-24 |
| JP5787981B2 (en) | 2015-09-30 |
| KR20110119490A (en) | 2011-11-02 |
| AU2011245930B2 (en) | 2015-08-20 |
| JP2013526204A (en) | 2013-06-20 |
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