CN108235136A - A kind of data playing method and terminal device - Google Patents
A kind of data playing method and terminal device Download PDFInfo
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- CN108235136A CN108235136A CN201810215225.7A CN201810215225A CN108235136A CN 108235136 A CN108235136 A CN 108235136A CN 201810215225 A CN201810215225 A CN 201810215225A CN 108235136 A CN108235136 A CN 108235136A
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 230000003139 buffering effect Effects 0.000 claims description 32
- 238000012545 processing Methods 0.000 claims description 28
- 230000003111 delayed effect Effects 0.000 claims description 5
- 238000003860 storage Methods 0.000 abstract description 19
- 230000008569 process Effects 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 10
- 230000006870 function Effects 0.000 description 8
- 238000004891 communication Methods 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
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- 238000011068 loading method Methods 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
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- 230000003068 static effect Effects 0.000 description 2
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- 230000003044 adaptive effect Effects 0.000 description 1
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- 238000004364 calculation method Methods 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4331—Caching operations, e.g. of an advertisement for later insertion during playback
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440263—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the spatial resolution, e.g. for displaying on a connected PDA
-
- 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
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/8547—Content authoring involving timestamps for synchronizing content
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Computer Security & Cryptography (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The embodiment of the present invention discloses a kind of data playing method and terminal device, it is related to audio and video process field, the delay between the live data of the played data and server storage played on terminal device can be avoided to increase, the generation of live play failure scenarios is reduced or avoided.This method includes：The terminal device live data that load server is sent in the buffer；Terminal device reads currently playing data in the buffer, and plays currently playing data；Terminal device determines the delay of currently playing data and live data according to the current live time of live data and the reproduction time of currently playing data；Terminal device adjusts the broadcasting speed of currently playing data according to delay.
Description
Technical field
The embodiment of the present invention is related to audio and video process field more particularly to a kind of data playing method and terminal device.
Background technology
DASH (Dynamic Adaptive Streaming over HTTP, the dynamic self-adapting stream based on HTTP) video
Transport protocol is a kind of a kind of agreement that video is transmitted based on internet, can be with the variation of dynamically adapting network bandwidth, according to band
Wide size, player can select the video data of different bandwidth to play out.DASH agreements can transmit program request type
Video frequency program VOD (Video on Demand) can also transmit the video frequency program of live streaming (Live) type.
The characteristics of due to live video, the live data of live video are to generate and be stored in real time server, and
After live data generates a period of time (being typically to arrive a dozens of minutes in), and since server space is limited, number is broadcast live
According to can only preserve a period of time, after to the time, server will delete live data.If user's viewing live streaming for a long time
Video, and have happening for multiple network congestion during live video, then the played data seen on terminal device
There is increasing delay between meeting and the live data of server storage, and after network recovery, this delay can not be also
It is former.Once this delay has exceeded the allowed band of server, (above-mentioned one minute to more than ten minutes, this is live streaming with server
The memory space of data distribution is related), play video council failure.It needs to replay at this time.It may result in live video in this way
In the case of unstable networks, even if bandwidth is very high, it is still unavoidable from final broadcasting failure.
Invention content
The embodiment of the present invention provides a kind of data playing method and terminal device, can avoid what is played on terminal device
Delay between played data and the live data of server storage increases, and live video is reduced or avoided and plays failure scenarios
Occur.
In a first aspect, a kind of data playing method is provided, including：Terminal device in the buffer load server send it is straight
Multicast data；Terminal device reads currently playing data in the buffer, and plays currently playing data；Terminal device is according to live streaming number
According to current live time and the reproduction times of currently playing data determine the delay of currently playing data and live data；Eventually
End equipment adjusts the broadcasting speed of currently playing data according to delay.In said program, terminal device can be currently playing
In the playing process of data, it can be determined according to the current live time of live data and the reproduction time of currently playing data
The delay of currently playing data and live data, then according to the broadcasting speed of the currently playing data of delay adjustment, such as when
Broadcasting speed is improved when being delayed larger, normal playback speed etc. is maintained when being delayed relatively low, it in this way can be to avoid on terminal device
Delay between the played data of broadcasting and the live data of server storage increases, and live play failure scenarios are reduced or avoided
Generation.
Second aspect provides a kind of terminal device, including：
Load-on module, the live data sent for load server in the buffer；
Playing module for reading currently playing data in the buffer, and plays the currently playing data；
Processing module, for the broadcasting of the current live time according to the live data and the currently playing data
Time determines the delay of the currently playing data and the live data；
The playing module, the delay for being determined according to the processing module adjust the currently playing data
Broadcasting speed.
The third aspect provides a kind of terminal device, including：Communication interface, processor, memory, bus；The memory
For storing computer executed instructions, the processor is connect with the memory by the bus, when the terminal device
During operation, the processor performs the computer executed instructions of the memory storage, so that the terminal device performs as above
The method stated.
Fourth aspect provides a kind of computer storage media, including instructing, when run on a computer so that institute
It states computer and performs method as described above.
It is to be appreciated that any terminal device or computer storage media of above-mentioned offer are used to perform and be carried above
The corresponding method of first aspect of confession, therefore, attainable advantageous effect can refer to first aspect above method and
The advantageous effect of corresponding scheme in following detailed description, details are not described herein again.
Description of the drawings
It in order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art
Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the present invention
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of data playing method schematic diagram that the embodiment of the present invention provides；
Fig. 2 is a kind of data playing method schematic diagram that another embodiment of the present invention provides；
Fig. 3 is a kind of data playing method schematic diagram that another embodiment of the present invention provides；
Fig. 4 is a kind of data playing method schematic diagram that one more embodiment of the present invention provides；
Fig. 5 is the flow diagram of a kind of data playing method that the embodiment of the present invention provides；
Fig. 6 is the mapping relations schematic diagram of a kind of broadcasting speed that the embodiment of the present invention provides and delay factor；
Fig. 7 is a kind of data playing method schematic diagram that another embodiment of the present invention provides；
Fig. 8 is a kind of data playing method schematic diagram that another embodiment of the present invention provides；
Fig. 9 is the structure diagram of a kind of terminal device that the embodiment of the present invention provides；
Figure 10 is the structure diagram of a kind of terminal device that another embodiment of the present invention provides.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
First, by taking DASH transmission of video agreements as an example, the player plays live content on terminal device is illustrated
It is as follows：
With reference to shown in Fig. 1, reference clock axis, if current time is T1, the content of live video is exactly that time point T1 is opened
The content A of beginning.As shown in Figure 1, for content A after treatment, live data synchronous storage on the server can be generated.Due to
Server-assignment gives live data limited for storing the space of live data, therefore can only storing duration B on the server,
And the live data of B durations is always the live content of nearest a period of time, i.e., one section of live data self-synchronizes to server
Afterwards, after timing B durations, server will delete this section of live data, i.e. this section of live data only can be when server retains B
It is long.
In addition, the broadcasting demand to adapt to terminal device, when starting to play, in order to adapt to the unstable of network, plays
Device can load a small amount of live data of buffering from server as played data and be used for playing, illustrative such as the buffering of C durations
Data, this data are typically the content of several seconds to tens seconds.Then it is in buffering duration C knots when player really starts to play
Start the content played after beam on the T2 times.Time point T1 of this content usually than being really broadcast live, which is slightly delayed, (uses δ
T is represented).
Normal in network, the video playout speed of player and the speed of live streaming are identical, therefore δ T begin
It remains unchanged eventually, the content that user sees usually slightly postpones (several seconds to tens seconds, that is, buffer duration C) than true content.
If interference in short-term occurs in network, the data-transmission interruptions or excessively slow between server and terminal device can be caused
Slowly, then bandwidth is not enough to maintain normal play.According to existing way, the standard in DASH agreements, terminal device can be to broadcast
Put the video that device is switched to the measures such as lower resolution ratio loading low definition.But if bandwidth has arrived regarding for visibility minimum
After the lower limit that frequency can allow, player can only play the played data in caching to maintain network replies normal, if
Data cached broadcasting is over, then player switchs to halted state automatically.As shown in Figure 2.After player pause, what player broadcasted
Video time (T2) and the time difference (δ T) of true live video time (T1) can be widened.
After network recovery, terminal device can be that player continues to load the later data of T2, while restore to play.Until
All data loadings are completed or the buffering of player is filled.As shown in Figure 3.In figure T3 be buffering data be loaded into when
Between position.Due to network, terminal device plays the speed of live video and the speed of server generation live data under normal circumstances
Identical, playout-delay (δ T) can be always maintained at constant.If during live video is played, network repeatedly interferes, just
Network interim card shown in Fig. 2 can repeatedly occur.The video time (T2) and true live video time that then terminal device broadcasts
(T1) time difference (δ T) can be bigger and bigger.It is happened until shown in Fig. 4.
Refering to what is shown in Fig. 4, since δ T are increasing, always there are one time point, the data of current cache can not include clothes
The data being deleted on business device.At this moment terminal device will be unable to the data to server request to player plays.According to DASH
Agreement regulation, player can be fed back to application plays failure, and stops playing.In order to solve this problem, it is common at present
Way is to increase the memory source that buffering uses.But do so usually can waste a large amount of memory source on the terminal device, and
And the video of user's viewing actually also can be increasing with true slowed-down video.
It is increased for the delay between the played data and server that avoid playing on terminal device, live streaming is reduced or avoided and broadcasts
Put the generation of failure scenarios.Embodiments herein provides a kind of data playing method, with reference to shown in Fig. 5, includes the following steps：
101st, the terminal device live data that load server is sent in the buffer.
102nd, terminal device reads currently playing data in the buffer, and plays currently playing data.
Specifically, for video data, video data feeding decoder is first decoded by terminal device, then to decoding
Video data afterwards carries out rendering output；For audio data, audio data feeding decoder is first decoded by terminal device,
Then rendering output is carried out to decoded audio data.
103rd, terminal device is determined according to the current live time of live data and the reproduction time of currently playing data
The delay of currently playing data and live data.
104th, terminal device adjusts the broadcasting speed of currently playing data according to delay.
Wherein for video data, the adjustment needs of broadcasting speed are adjusted before decoder is sent into, specific whole
End equipment changes the timestamp of currently playing data according to delay before the decoding.So as to fulfill the adjustment to broadcasting speed.For
Audio data, the adjustment of broadcasting speed need to be adjusted after decoder decoding, and specific terminal device is according to delay pair
Decoded currently playing data carry out time-stretching processing, such as use similar superposition (the Waveform Similarity of waveform
And Overlap Add, WSOLA) method to currently playing data carry out time-stretching processing.Certainly the side of modification broadcasting speed
Also there are many details are not described herein again for formula.
In addition following manner realization specifically may be used in step 104：
Mode one：Terminal device adjusts the broadcasting speed of currently playing data according to delay δ T and buffering duration C.Herein it
Preceding terminal device needs to obtain the buffering duration C of currently playing data, the broadcasting of a length of installing terminal equipment during certain buffering
Device application attribute determine, the length of acquiescence or user it is adjustable.Specifically, can according to formula F=(δ T-C)/C,
Computation delay factor F adjusts the broadcasting speed of currently playing data according to delay factor F.
The relationship of broadcasting speed V and delay factor F after adjustment, can be mapped according to relationship shown in fig. 6：Work as F
When≤1, played according to former speed.Work as F>When 1, accelerate to play according to delay factor F, F is bigger, and broadcasting speed V is faster, maximum speed
The upper limit can be controlled by user option Vmax.
Usually consider user experience, the broadcasting speed after general adjustment is no more than 1.3 times of normal playback speed.According to broadcasting
The empirical data of speed is put, a variety of mapping functions can be defined, it is only a kind of example to scheme above.
Broadcasting speed is after conciliation, since the broadcasting speed of terminal device is faster than normal broadcasting speed, by one section
After time, delay δ T are gradually decreased in tolerance interval automatically, at this moment delay factor F is restored to 1, and broadcasting speed restores just
Often, reach final state as shown in Figure 7.
Mode two：Terminal device is according to delay, buffering duration and the broadcasting speed for retaining the currently playing data of duration adjustment
Degree, wherein broadcasting speed meet so that δ T-C≤B, wherein δ T are delay, and C is buffering duration, and B is retains duration.Before this
Terminal device needs to obtain the buffering duration C of currently playing data, the player of a length of installing terminal equipment during certain buffering
The attribute of application determines, the length of acquiescence or user it is adjustable.Terminal device also needs to the number used according to server
Reservation duration of the server to live data is determined according to transport protocol.Illustratively retain duration as defined in DASH agreements.
With reference to shown in Fig. 8, as long as δ T-C≤B, then it can ensure that server is sent to the number buffered in terminal device caching
According to not deleted data in the upper server that can continue, the data that broadcasting speed is not in then current cache later are adjusted in this way
The phenomenon that data being deleted on server can not be included, live play fails caused by so as to avoid delay.
In said program, terminal device can be in the playing process of currently playing data, can be according to live data
The current live time and the reproduction times of currently playing data determine the delay of currently playing data and live data, then
The broadcasting speed of currently playing data is adjusted according to the delay, such as broadcasting speed is improved when delay is larger, it is relatively low being delayed
When maintain normal playback speed etc., can add in this way to avoid the delay between the played data and server played on terminal device
Greatly, the generation of live play failure scenarios is reduced or avoided.
The embodiment of the present invention provides a kind of terminal device, applied to above-mentioned data playing method is implemented, with reference to Fig. 9 institutes
Show including：
Load-on module 91, the live data sent for load server in the buffer；
Playing module 92 for reading currently playing data in the buffer, and plays the currently playing data；
Processing module 93, for according to the current live time of the live data and broadcasting for the currently playing data
Put the delay that the time determines the currently playing data and the live data；
Playing module 92, for adjusting the broadcasting speed of currently playing data according to the delay that processing module 93 determines.
In a kind of illustrative scheme, processing module 93 is additionally operable to obtain the buffering durations of currently playing data；It plays
Module 92 is specifically used for the delay determined according to processing module 93 and buffering duration adjusts the broadcasting speed of currently playing data.
In a kind of illustrative scheme, playing module 92 is specifically used for according to formula F=(δ T-C)/C, computation delay because
Sub- F, wherein δ T are delay, and C is buffering duration；The broadcasting speed of currently playing data is adjusted according to delay factor.
In a kind of illustrative scheme, processing module 93 is additionally operable to be determined according to the Data Transport Protocol that server uses
Server is to the reservation duration of live data；Processing module 93 is additionally operable to obtain the buffering duration of currently playing data；Handle mould
Block 93, specifically for adjusting the broadcasting speed of the currently playing data according to delay, buffering duration and reservation duration, wherein
Broadcasting speed meets so that δ T-C≤B, wherein δ T are delay, and the C is buffering duration, and B is retains duration.
In a kind of illustrative scheme, currently playing data include video data；Processing module 93, specifically for basis
The timestamp of the currently playing data is changed in delay.
In a kind of illustrative scheme, currently playing data include audio data；Processing module 93, specifically for basis
Delay carries out time-stretching processing to decoded currently playing data.
Wherein, all related contents for each step that above method embodiment is related to can quote corresponding function module
Function description, effect details are not described herein.
In the case of using integrated module, terminal device includes：Storage unit, processing unit and interface unit.
Processing unit to the action of terminal device for carrying out control management, for example, processing unit is used to that terminal device to be supported to perform Fig. 5
In process S101-104；Interface unit is used to that terminal device to be supported to obtain live data from server.Storage unit, for depositing
Store up the program code and data of terminal device.
Wherein, using processing unit as processor, storage unit is memory, and interface unit is for communication interface.Wherein,
Terminal device is with reference to shown in Figure 10, including communication interface 1001, processor 1002, memory 1003 and bus 1004, communication
Interface 1001, processor 1002 are connected by bus 1004 with memory 1003.
Processor 1002 can be a general central processor (Central Processing Unit,
CPU), microprocessor, application-specific integrated circuit (Application-Specific Integrated
Circuit, ASIC) or one or more integrated circuits for application scheme program to be controlled to perform.
Memory 1003 can be read-only memory (Read-Only Memory, ROM) or can store static information and refer to
The other kinds of static storage device enabled, random access memory (Random Access Memory, RAM) or can store
Information and the other kinds of dynamic memory or Electrically Erasable Programmable Read-Only Memory of instruction
(Electrically Erasable Programmable Read-only Memory, EEPROM), CD-ROM (Compact
Disc Read-Only Memory, CD-ROM) or other optical disc storages, optical disc storage (including compression optical disc, laser disc, light
Dish, Digital Versatile Disc, Blu-ray Disc etc.), magnetic disk storage medium or other magnetic storage apparatus or can be used in carrying or
Storage with instruction or data structure form desired program code simultaneously can by any other medium of computer access, but
It is without being limited thereto.Memory can be individually present, and be connected by bus with processor.Memory can also be integrated with processor
Together.
Wherein, memory 1003 for store perform application scheme application code, and by processor 1002
Control performs.Communication interface 1001 is used to receive the content of external equipment input, such as the live data that server is sent.Processing
Device 1002 is used to perform the application code stored in memory 1003, so as to fulfill the side described in the embodiment of the present application
Method.
In addition, also providing a kind of calculate stores media (or medium), including carrying out in above-described embodiment when executed
The instruction of the operation of method.
In addition, a kind of computer program product is also provided, including above-mentioned calculating storage media (or medium).
It should be understood that in various embodiments of the present invention, the size of the serial number of above-mentioned each process is not meant to perform suitable
The priority of sequence, the execution sequence of each process should be determined with its function and internal logic, without the implementation of the reply embodiment of the present invention
Process forms any restriction.
Those of ordinary skill in the art may realize that each exemplary lists described with reference to the embodiments described herein
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is performed with hardware or software mode, specific application and design constraint depending on technical solution.Professional technician
Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed
The scope of the present invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit can refer to the corresponding process in preceding method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method, it can be with
It realizes by another way.For example, apparatus embodiments described above are only schematical, for example, the unit
It divides, only a kind of division of logic function can have other dividing mode, such as multiple units or component in actual implementation
It may be combined or can be integrated into another system or some features can be ignored or does not perform.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, equipment or unit
It closes or communicates to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical unit, you can be located at a place or can also be distributed to multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
That each unit is individually physically present, can also two or more units integrate in a unit.
If the function is realized in the form of SFU software functional unit and is independent product sale or in use, can be with
It is stored in a computer read/write memory medium.Based on such understanding, technical scheme of the present invention is substantially in other words
The part contribute to the prior art or the part of the technical solution can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, is used including some instructions so that a computer equipment (can be
People's computer, server or network equipment etc.) perform all or part of the steps of the method according to each embodiment of the present invention.
And aforementioned storage medium includes：USB flash disk, mobile hard disk, read-only memory (English full name:Read-only memory, English letter
Claim：ROM), random access memory (English full name：Random access memory, English abbreviation：RAM), magnetic disc or light
The various media that can store program code such as disk.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in change or replacement, should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of data playing method, which is characterized in that including：
The terminal device live data that load server is sent in the buffer；
The terminal device reads and plays currently playing data in the buffer；
The terminal device is according to the current live time of the live data and the reproduction time of the currently playing data
Determine the delay of the currently playing data and the live data；
The terminal device adjusts the broadcasting speed of the currently playing data according to the delay.
2. data playing method according to claim 1, which is characterized in that the method further includes：
The terminal device obtains the buffering duration of the currently playing data；
The terminal device adjusts the broadcasting speed of the currently playing data according to the delay, including：
The broadcasting speed of the currently playing data is adjusted according to the delay and the buffering duration.
3. data playing method according to claim 2, which is characterized in that described according to the delay and during the buffering
The long broadcasting speed for adjusting the currently playing data, including：
According to formula F=(δ T-C)/C, computation delay factor F, wherein δ T are the delay, and C is the buffering duration；
The broadcasting speed of the currently playing data is adjusted according to the delay factor.
4. data playing method according to claim 1, which is characterized in that the method further includes：
The terminal device determines the server to the live data according to the Data Transport Protocol that the server uses
Reservation duration；
The terminal device obtains the buffering duration of the currently playing data；
The terminal device adjusts the broadcasting speed of the currently playing data according to the delay, including：
The broadcasting speed of the currently playing data is adjusted according to the delay, the buffering duration and the reservation duration,
Wherein described broadcasting speed meets so that δ T-C≤B, wherein δ T are the delay, and C is the buffering duration, and B is the reservation
Duration.
5. according to claim 1-4 any one of them data playing methods, which is characterized in that the currently playing data include
Video data；
The terminal device adjusts the broadcasting speed of the currently playing data according to the delay, including：
The terminal device changes the timestamp of the currently playing data before the decoding according to described be delayed.
6. according to claim 1-4 any one of them data playing methods, which is characterized in that the currently playing data include
Audio data；
The terminal device adjusts the broadcasting speed of the currently playing data according to the delay, including：
The terminal device carries out time-stretching processing according to the delay to the decoded currently playing data.
7. a kind of terminal device, which is characterized in that including：
Load-on module, the live data sent for load server in the buffer；
Playing module, for reading and playing currently playing data in the buffer；
Processing module, for the current live time according to the live data and the reproduction time of the currently playing data
Determine the delay of the currently playing data and the live data；
The playing module, the delay for being determined according to the processing module adjust the broadcasting of the currently playing data
Speed.
8. terminal device according to claim 7, which is characterized in that
The processing module is additionally operable to obtain the buffering duration of the currently playing data；
The playing module is specifically used for according to adjusting the delay and the buffering duration that the processing module determines
The broadcasting speed of currently playing data.
9. terminal device according to claim 8, which is characterized in that the playing module be specifically used for according to formula F=
(δ T-C)/C, wherein computation delay factor F, δ T are the delay, and the C is the buffering duration；According to the delay factor
Adjust the broadcasting speed of the currently playing data.
10. terminal device according to claim 7, which is characterized in that
The processing module is additionally operable to determine the server to described straight according to the Data Transport Protocol that the server uses
The reservation duration of multicast data；
The processing module is additionally operable to obtain the buffering duration of the currently playing data；
The processing module, specifically for working as according to the delay, the buffering duration and the reservation duration adjustment
The broadcasting speed of preceding played data, wherein the broadcasting speed meets so that δ T-C≤B, wherein δ T are the delay, the C is
The buffering duration, the B are the reservation duration.
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