CN109819310A - A kind of stream medium data playback method and device - Google Patents
A kind of stream medium data playback method and device Download PDFInfo
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- CN109819310A CN109819310A CN201910072178.XA CN201910072178A CN109819310A CN 109819310 A CN109819310 A CN 109819310A CN 201910072178 A CN201910072178 A CN 201910072178A CN 109819310 A CN109819310 A CN 109819310A
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Abstract
This application discloses a kind of stream medium data playback method and devices, to prevent stream medium data from terminating in advance broadcasting.A kind of stream medium data playback method provided by the embodiments of the present application, comprising: receiving stream media data simultaneously inject bottom player；When receiving the broadcasting that browser issues terminates order, however, it is determined that need delayed execution to play end operation, then terminate the broadcasting of the bottom player streaming media data at the first time according to currently playing velocity lag.
Description
Technical field
This application involves TV technology more particularly to a kind of stream medium data playback methods and device.
Background technique
Currently, Stream Media Application, such as Youtube, VUDU, Amazon, Netflix is widely used in television field, this
A little applications increasingly become a kind of trend of television field.
In currently playing Youtube video, browser is held from the data that server (server end of browser) obtains
Continuous constantly being injected into device of televising is decoded operation, then plays；When the data that browser issues are video or sound
After the end frame (End Off Stream, EOS) of frequency, browser has the time value Pts_eos of last frame, in playing process
In, top-level travel device constantly obtains the time value currentTime of currently practical broadcasting from bottom player end, if currently
Value currentTime is more than or equal to Pts_eos, then top-level travel device will be considered that broadcasting terminates, and stopping can be called to play pause behaviour
Make, issues end play command.
But the currentTime that in a practical situation, top-level travel device obtains cannot be guaranteed it is accurately that there are when system
Between it is poor, especially scene is played in speed, under the scene that Network status constantly changes or resolution ratio constantly switches.Although
CurrentTime is required in Youtube certification, for example to guarantee the currentTime time obtained after stopping operation
Value is accurately within 32miliseconds (millisecond)；For playing MSE content, need to guarantee the currentTime time obtained
Value is accurately within 250miliseconds (millisecond).
Therefore the currentTime value obtained is often the time value pts for being greater than currently playing data frame, so that playing
There may be the data for having been injected into bottom player to have enough time playing not yet in process, but since browser at this time is thought
The time value of last frame is reached, calls and stops play operation, terminated in advance so as to cause broadcasting.
Summary of the invention
The embodiment of the present application provides a kind of stream medium data playback method and device, to prevent stream medium data from shifting to an earlier date
Terminate to play.
A kind of stream medium data playback method provided by the embodiments of the present application, comprising:
Receiving stream media data simultaneously inject bottom player；
When receiving the broadcasting that browser issues terminates order, however, it is determined that need delayed execution to play end operation, then
Terminate the broadcasting of the bottom player streaming media data at the first time according to currently playing velocity lag.
In this way, receiving stream media data and injecting bottom player；When the broadcasting knot for receiving browser and issuing
When beam order, however, it is determined that need delayed execution to play end operation, then terminate institute at the first time according to currently playing velocity lag
The broadcasting of bottom player streaming media data is stated, to prevent stream medium data from terminating in advance broadcasting.
Optionally, the determination needs delayed execution to play end operation, specifically includes:
The current play time and the stream medium data for obtaining the stream medium data play the broadcasting for terminating to need
Total duration；
If the current play time of the stream medium data is less than the broadcasting total duration for playing and terminating to need, it is determined that need
Delayed execution plays end operation.
Optionally, described that the bottom player streaming media data are terminated according to currently playing velocity lag at the first time
Broadcasting, comprising: obtain the currently playing speed of the bottom player；
The first time is calculated according to first broadcasting speed；
Postponing the first time terminates the broadcasting of the bottom player streaming media data.
Optionally, the calculation formula of the first time are as follows:
Wherein, t is that at the first time, speedrate is the first broadcasting speed of bottom player, and pts1 is bottom player
Current play time, pts2 are that the stream medium data under currently playing speed terminates to play the broadcasting total duration needed.
Optionally, the broadcasting speed is 1 speed, 0.5 speed or 2 speeds.
Optionally, the first time is pre-set；The stream medium data of different broadcast formats corresponds to different
One time.
Correspondingly, in device side, a kind of stream medium data playing device provided by the embodiments of the present application, which includes:
First unit for receiving stream media data and injects bottom player；
Second unit, for when receiving the broadcasting that browser issues terminates order, however, it is determined that delayed execution is needed to broadcast
End operation is put, then broadcasting for the bottom player streaming media data is terminated according to currently playing velocity lag at the first time
It puts.
Optionally, the second unit is also used to:
The current play time and the stream medium data for obtaining the stream medium data play the broadcasting for terminating to need
Total duration；
If the current play time of the stream medium data is less than the broadcasting total duration for playing and terminating to need, it is determined that need
Delayed execution plays end operation.
A kind of calculating equipment that the embodiment of the present application also provides, comprising:
Memory, for storing program instruction；
Processor executes this above-mentioned Shen according to the program of acquisition for calling the program instruction stored in the memory
It please any method for providing of embodiment.
Another embodiment of the application provides a kind of computer storage medium, and the computer storage medium is stored with calculating
Machine executable instruction, the computer executable instructions are for making the computer execute any of the above-described kind of method.
Detailed description of the invention
In order to more clearly explain the technical solutions in the embodiments of the present application, make required in being described below to embodiment
Attached drawing is briefly introduced, it should be apparent that, the drawings in the following description are only some examples of the present application, for this
For the those of ordinary skill in field, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of stream medium data playback method schematic diagram provided by the embodiments of the present application；
Fig. 2 is a kind of stream medium data playing flow schematic diagram provided by the embodiments of the present application；
Fig. 3 is stream medium data broadcast time-delay schematic diagram provided by the embodiments of the present application；
Fig. 4 is a kind of stream medium data playing device schematic diagram provided by the embodiments of the present application；
Fig. 5 is a kind of stream medium data playing device schematic diagram that the embodiment of the present application also provides.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, is not whole embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall in the protection scope of this application.
The each embodiment of the application is described in detail with reference to the accompanying drawings of the specification.It should be noted that the application
The displaying sequence of embodiment only represents the sequencing of embodiment, does not represent the superiority and inferiority of technical solution provided by embodiment.
When video of televising (such as Youtube video), top-level travel device is constantly broadcast to bottom by middle layer
Device injection stream medium data is put, bottom player streaming media data are decoded, play；When top-level travel device is played to bottom
After device injects the end frame data of Streaming Media, top-level travel device calls pause operation, and setplaybackrate=0 (broadcast by setting
Putting speed is 0, is equivalent to stopping and plays), in certain special scenes, such as at a slow speed or quickly in playing process, it is network-like
Condition constantly changes, resolution ratio switches etc., will lead to audio-video and terminates in advance broadcasting；The embodiment of the present application terminates in middle layer calling
Before the order of broadcasting, delay strategy is increased, is terminated in advance with preventing from playing.
Referring to Fig. 1, a kind of stream medium data playback method provided by the embodiments of the present application, comprising:
S101, receiving stream media data simultaneously inject bottom player；
For example, middle layer receives the stream medium data that top-level travel device issues, and inject bottom player.
S102, when receiving the broadcasting that browser issues terminates order, however, it is determined that need delayed execution play terminate behaviour
Make, then terminates the broadcasting of the bottom player streaming media data at the first time according to currently playing velocity lag.
For example, delayed execution plays end operation, specially sleep is operated in a program, after Sleep (t) time, then into
Row pause operation；Wherein, t is the first time of delay, for example, 50ms.In addition, delay operation is carried out in middle layer,
Top-level travel device is only to provide interface, can not modify.
Optionally, the determination needs delayed execution to play end operation, specifically includes:
The current play time and the stream medium data for obtaining the stream medium data play the broadcasting for terminating to need
Total duration；
If the current play time of the stream medium data is less than the broadcasting total duration for playing and terminating to need, it is determined that need
Delayed execution plays end operation.
For example, the play times of data is currently played from obtaining from bottom player in middle layer, from top-level travel device
The stream medium data obtained under currently playing speed plays the broadcasting total duration for terminating to need.
Optionally, described that the bottom player streaming media data are terminated according to currently playing velocity lag at the first time
Broadcasting, comprising: obtain the currently playing speed of the bottom player；
The first time is calculated according to first broadcasting speed；
Postponing the first time terminates the broadcasting of the bottom player streaming media data.
From when total time will receive system of current play time and stream medium data broadcasting that bottom player is got
Between poor, network state, resolution ratio and broadcasting speed these factors influence.For example, first using 1 times in the case where speed plays scene
Speed plays video, then switch speed, is changed to 2 speeds and plays video, top-level travel device can calculate stream matchmaker according to specific scene
Volume data terminates the total duration played.
Optionally, the calculation formula of the first time are as follows:
Wherein, t is that at the first time, speedrate is the first broadcasting speed of bottom player, and pts1 is bottom player
Current play time, pts2 are that the stream medium data under currently playing speed terminates to play the broadcasting total duration needed.
Pts1 is that top-level travel device is got from bottom player, and is transmitted to again from bottom player by middle layer
Layer browser needs the time, which is the system balance time, i.e. the pts+ system balance time of pts1=present frame is (from bottom
After player gets current play time, need to fill the time of system time-consuming return again；Due to quickly playing under scene
The system balance time be greater than slow play scene under the system balance time, therefore quickly play scene under, the number of pts1
Value can be greater than the numerical value under slow play scene)；For example, general resolution ratio is 1366*768 pixel, full HD is 1920*
1080 pixels, 4K resolution ratio are 3840*2160 pixel, and resolution ratio is higher higher for requirements such as processing speeds, are obtained current
Play time pts1 error may be bigger.
Optionally, the broadcasting speed is 1 speed, 0.5 speed or 2 speeds.
When broadcasting speed is 1 speed, delay time pts2-pts1；When broadcasting speed is 0.5 speed, when delay
Between be 2* (pts2-pts1)；When broadcasting speed is 2 speed, delay time is 0.5* (pts2-pts1).
Optionally, the first time is pre-set；The stream medium data of different broadcast formats corresponds to different
One time.
For example, the empirical value of first time is 50ms；When playing the audio-video document of different-format (such as H264,
Vp9), corresponding to obtain different empirical values.
Referring to fig. 2, a kind of stream medium data playing flow figure provided by the embodiments of the present application, main step include:
Stream medium data is injected into bottom player by middle layer (Middle) by top-level travel device (Browser)
(Player), bottom player is decoded data, audio-video time synchronization, plays.
When the data that top-level travel device issues are the end frame EOS (last frame) of stream medium data (video or audio)
When data, browser preserve end frame EOS time value Pts_eos (when top-level travel device issues end frame, Pts_eos
It is fixed as the play time value of end frame), if Pts_eos is less than or equal to currentTime, (in playing process, upper layer is clear
Device of looking at can constantly obtain the time value currentTime of currently practical played data by middle layer from bottom player, should
Value can also be indicated with pts1), then top-level travel device thinks that bottom player plays terminate, and top-level travel device can call stopping to play
Pause operation, issuing terminates play command (since many pause operation is that network speed is not in pausing operation, such as playing process
Good, without data, pause is waited, it is therefore desirable to which the pause operation for confirming that top-level travel device issues is the pause for terminating to play
Operation).
After middle layer receives the end play command that top-level travel device issues, obtained currently from bottom player
The play time currentTime of played data obtains the entire audio-video under current speed playing condition from top-level travel device
Total time duration, which indicates that (value can constantly change in playing process with pts2；Such as it is cut in speed broadcasting
In carry over scape, for same section of video, if the value of duration is 10 minute when 1 speed being used to play, broadcast using 2 speeds
The value of duration is 5 minutes when putting；It is also different for playing the file source used for two kinds of speeds of the same video
), and obtain current broadcasting speed speedrate from top-level travel device (under speed scene)；If when currently playing
Between pts1 be less than audio-video total time pts2, then it represents that data play not yet, need delayed execution pause operate；Delay
The calculation formula of time (or first time of delay) are as follows:
If speed broadcasting speed is 1 (normal playback speed), delay time pts2-pts1；If speed plays
Speed is 0.5 (0.5 times of normal playback speed), then delay time is 2* (pts2-pts1)；If speed broadcasting speed is 2
(2 times of normal playback speed), then delay time is 0.5* (pts2-pts1).
The numerical value of pts2-pts1 can also obtain (such as 50ms) by empirical value, when the audio-video for playing different-format
It is corresponding to obtain different empirical values when file (such as H264, Vp9).
After broadcasting, the state for updating bottom player is end state, for example, closing video pictures, loudspeaker etc..
Referring to Fig. 3, stream medium data broadcast time-delay figure provided by the embodiments of the present application, in theoretical situation, player is broadcast
According to the data played in order of each frame (frame) when putting, and in playing process, the frame (example of top-level travel device acquisition
Such as xth frame) currentTime (fx) it is equal to the play time pts (F of the framex)；But in a practical situation, when being played to xth
When frame, the currentTime (f of top-level travel device acquisitionx) it is greater than the play time pts (F of the framex)；When dotted line data frame reaches
When the Pts_eos time, bottom player is played to last frame not yet, in playing process, since speed switches or divides
The reasons such as resolution switching, the currentTime obtained at this time are more than or equal to Pts_eos, and top-level travel device will be considered that broadcasting terminates,
Therefore pause order is issued, but there is also the data in the duration-currentTime time to need to play (in 1 speed
Broadcasting scene under).
Correspondingly, in device side, referring to fig. 4, a kind of stream medium data playing device provided by the embodiments of the present application, packet
It includes:
First unit 11 for receiving stream media data and injects bottom player；
Second unit 12, for when receiving the broadcasting that browser issues terminates order, however, it is determined that need delayed execution
End operation is played, then broadcasting for the bottom player streaming media data is terminated according to currently playing velocity lag at the first time
It puts.
Optionally, the second unit 12 is also used to:
The current play time and the stream medium data for obtaining the stream medium data play the broadcasting for terminating to need
Total duration；
If the current play time of the stream medium data is less than the broadcasting total duration for playing and terminating to need, it is determined that need
Delayed execution plays end operation.
Referring to Fig. 5, a kind of stream medium data playing device that the embodiment of the present application also provides, comprising:
Processor 600 executes following process for reading the program in memory 610:
Receiving stream media data simultaneously inject bottom player；
When receiving the broadcasting that browser issues terminates order, however, it is determined that need delayed execution to play end operation, then
Terminate the broadcasting of the bottom player streaming media data at the first time according to currently playing velocity lag.
By the device, receiving stream media data simultaneously inject bottom player；When the broadcasting knot for receiving browser and issuing
When beam order, however, it is determined that need delayed execution to play end operation, then terminate institute at the first time according to currently playing velocity lag
The broadcasting of bottom player streaming media data is stated, to prevent stream medium data from terminating in advance broadcasting.
Optionally, the determination needs delayed execution to play end operation, specifically includes:
The current play time and the stream medium data for obtaining the stream medium data play the broadcasting for terminating to need
Total duration；
If the current play time of the stream medium data is less than the broadcasting total duration for playing and terminating to need, it is determined that need
Delayed execution plays end operation.
Optionally, described that the bottom player streaming media data are terminated according to currently playing velocity lag at the first time
Broadcasting, comprising: obtain the currently playing speed of the bottom player；
The first time is calculated according to first broadcasting speed；
Postponing the first time terminates the broadcasting of the bottom player streaming media data.
Optionally, the calculation formula of the first time are as follows:
Wherein, t is that at the first time, speedrate is the first broadcasting speed of bottom player, and pts1 is bottom player
Current play time, pts2 are that the stream medium data under currently playing speed terminates to play the broadcasting total duration needed.
Optionally, the broadcasting speed is 1 speed, 0.5 speed or 2 speeds.
Optionally, the first time is pre-set；The stream medium data of different broadcast formats corresponds to different
One time.
Wherein, in Fig. 5, bus architecture may include the bus and bridge of any number of interconnection, specifically by processor 600
The various circuits for the memory that the one or more processors and memory 610 of representative represent link together.Bus architecture is also
Various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like can be linked together, these are all
It is it is known in the art, therefore, it will not be further described herein.Bus interface provides interface.
The embodiment of the present application provides a kind of display terminal, which is specifically as follows desktop computer, portable
Computer, smart phone, tablet computer, personal digital assistant (Personal Digital Assistant, PDA) etc..This is aobvious
Show that terminal may include central processing unit (Center Processing Unit, CPU), memory, input-output apparatus etc.,
Input equipment may include keyboard, mouse, touch screen etc., and output equipment may include display equipment, such as liquid crystal display
(Liquid Crystal Display, LCD), cathode-ray tube (Cathode Ray Tube, CRT) etc..
For different display terminals, optionally, user interface 620, which can be external to be inscribed, needs connecing for equipment
Mouthful, the equipment of connection includes but is not limited to keypad, display, loudspeaker, microphone, control stick etc..
Processor 600, which is responsible for management bus architecture and common processing, memory 610, can store processor 600 and is holding
Used data when row operation.
Optionally, processor 600 can be CPU (centre buries device), ASIC (Application Specific
Integrated Circuit, specific integrated circuit), (Field-Programmable Gate Array, scene can compile FPGA
Journey gate array) or CPLD (Complex Programmable Logic Device, Complex Programmable Logic Devices).
Memory 610 may include read-only memory (ROM) and random access memory (RAM), and provide to processor
The program instruction and data stored in memory.In the embodiment of the present application, memory can be used for storing the embodiment of the present application
The program of any the method provided.
Processor is by the program instruction for calling memory to store, and processor is for executing sheet according to the program instruction of acquisition
Apply for any the method that embodiment provides.
The embodiment of the present application provides a kind of computer storage medium, above-mentioned provided by the embodiments of the present application for being stored as
Computer program instructions used in device, it includes the programs for executing above-mentioned either method provided by the embodiments of the present application.
The computer storage medium can be any usable medium or data storage device that computer can access, packet
Include but be not limited to magnetic storage (such as floppy disk, hard disk, tape, magneto-optic disk (MO) etc.), optical memory (such as CD, DVD,
BD, HVD etc.) and semiconductor memory (such as it is ROM, EPROM, EEPROM, nonvolatile memory (NAND FLASH), solid
State hard disk (SSD)) etc..
In conclusion the embodiment of the present application provides a kind of stream medium data playback method and device, thus anti-fluid stopping matchmaker
Volume data terminates in advance broadcasting.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The shape for the computer program product implemented in usable storage medium (including but not limited to magnetic disk storage and optical memory etc.)
Formula.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application
Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (10)
1. a kind of stream medium data playback method, which is characterized in that this method comprises:
Receiving stream media data simultaneously inject bottom player；
When receiving the broadcasting that browser issues terminates order, however, it is determined that need delayed execution to play end operation, then basis
Currently playing velocity lag terminates the broadcasting of the bottom player streaming media data at the first time.
2. the method according to claim 1, wherein the determination needs delayed execution to play end operation, tool
Body includes:
When the broadcasting that the current play time and stream medium data broadcasting end for obtaining the stream medium data need is total
It is long；
If the current play time of the stream medium data is less than the broadcasting total duration for playing and terminating to need, it is determined that need to be delayed
It executes and plays end operation.
3. the method according to claim 1, wherein described terminate at the first time according to currently playing velocity lag
The broadcasting of the bottom player streaming media data, comprising: obtain the currently playing speed of the bottom player；
The first time is calculated according to first broadcasting speed；
Postponing the first time terminates the broadcasting of the bottom player streaming media data.
4. method according to claim 1 or 3, which is characterized in that the calculation formula of the first time are as follows:
Wherein, t is that at the first time, speedrate is the first broadcasting speed of bottom player, and pts1 is that bottom player is current
Play time, pts2 be currently playing speed under the stream medium data terminate play need broadcasting total duration.
5. according to the method described in claim 3, it is characterized in that, the broadcasting speed is 1 speed, 0.5 speed or 2 speeds.
6. the method according to claim 1, wherein the first time is pre-set；Difference plays lattice
The stream medium data of formula corresponds to different first times.
7. a kind of stream medium data playing device, which is characterized in that the device includes:
First unit for receiving stream media data and injects bottom player；
Second unit, for when receiving the broadcasting that browser issues terminates order, however, it is determined that delayed execution is needed to play knot
Beam operation, then terminate the broadcasting of the bottom player streaming media data at the first time according to currently playing velocity lag.
8. device according to claim 7, which is characterized in that the second unit is also used to:
When the broadcasting that the current play time and stream medium data broadcasting end for obtaining the stream medium data need is total
It is long；
If the current play time of the stream medium data is less than the broadcasting total duration for playing and terminating to need, it is determined that need to be delayed
It executes and plays end operation.
9. a kind of calculating equipment characterized by comprising
Memory, for storing program instruction；
Processor requires 1~6 according to the program execution benefit of acquisition for calling the program instruction stored in the memory
Described in any item methods.
10. a kind of computer storage medium, which is characterized in that the computer storage medium is stored with the executable finger of computer
It enables, the computer executable instructions are for making the computer perform claim require 1 to 6 described in any item methods.
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| CN111147908A (en) * | 2020-04-02 | 2020-05-12 | 成都掌中全景信息技术有限公司 | Audio and video accurate synchronization method based on HTML5 video dynamic frame rate playback |
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| CN111147908A (en) * | 2020-04-02 | 2020-05-12 | 成都掌中全景信息技术有限公司 | Audio and video accurate synchronization method based on HTML5 video dynamic frame rate playback |
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