CN109040830A - Prediction technique, switching method and the device of live play Caton - Google Patents
Prediction technique, switching method and the device of live play Caton Download PDFInfo
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- CN109040830A CN109040830A CN201710429396.5A CN201710429396A CN109040830A CN 109040830 A CN109040830 A CN 109040830A CN 201710429396 A CN201710429396 A CN 201710429396A CN 109040830 A CN109040830 A CN 109040830A
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- 238000004590 computer program Methods 0.000 claims description 16
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- 238000004364 calculation method Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
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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
- H04N21/43—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
- H04N21/4383—Accessing a communication channel
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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
- H04N21/43—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
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
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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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6125—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via Internet
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/8547—Content authoring involving timestamps for synchronizing content
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- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The present invention provides prediction technique, switching method and the device of a kind of live play Caton.The present invention is by the variance based on the received frame rate of the main video flowing in unit time continuous within the current preset period compared with Caton threshold value, prediction plays Caton, and when predicting broadcasting Caton, pass through the current time stamp for obtaining the main video flowing being played on；Based on the variance of the received frame rate of each auxiliary video flowing of preset number within the current preset period, new main video flowing is obtained；Based on the new main video flowing and the current time stamp, switches at current time stamp described in the new main video flowing and play the new main video flowing, avoid broadcasting Caton.
Description
Technical field
The present invention relates to field of computer technology, prediction technique, switching more particularly, to a kind of live play Caton
Method and device.
Background technique
With the development of computer technology and popularizing for network, more and more people's selections pass through network and watch live streaming section
Mesh, for example, various competitive sports programs.
Currently, network direct broadcasting carries out the transmission of video resource typically merely by a network line.But due to network state
Stability be difficult to ensure, usually will appear and cause due to Network status is bad to receive video resource in time during live streaming
The phenomenon that playing Caton.In addition, impaired or loss of the video resource in transmission process, also results in broadcasting Caton.
Summary of the invention
The present invention provides prediction technique, switching method and the device of a kind of live play Caton, to overcome in the prior art
Because playing Caton caused by Network status is bad or video resource is impaired or loss.
According to the first aspect of the invention, a kind of prediction technique of live play Caton is provided, this method comprises: step
11, obtain the received frame rate of the main video flowing in continuous unit time within the current preset period；Wherein, institute
The received frame rate for stating main video flowing is the video image frame number of received main video flowing in the unit time；Step 12, based on described
The received frame rate of the main video flowing in unit time obtains the main video flowing within the current preset period and receives
The variance of frame per second；Step 13, if the variance of the received frame rate of main video flowing is greater than Caton threshold value within the current preset period,
Think that the broadcasting of the video image frame of the received main video flowing within the current preset period will will appear Caton.
The first possible implementation in conjunction with first aspect present invention, in second of possible implementation, the step
12 further comprise: the received frame rate based on main video flowing described in the unit time obtains the current preset time
The average value of the main video flowing received frame rate in section；Received frame rate based on main video flowing described in the unit time and
The average value obtains the variance of the main video flowing received frame rate within the current preset period.
In conjunction with second of first aspect present invention possible implementation, in the third possible implementation, the step
12 corresponding calculation formula are as follows:
(m1+m2+…+mn)/n=u,
[(m1-u)2+(m2-u)2+…+(mn-u)2]/n=v,
Wherein, m1, m2... ..., mnFor the received frame rate of the main video flowing in unit time respectively；N is current preset
The number for the unit time that period includes；U is the average value of the main video flowing received frame rate in the current preset period；v
For the variance of main video flowing received frame rate described in the current preset period.
According to the second aspect of the invention, a kind of prediction meanss of live play Caton are provided.The device includes: receiving frame
Rate obtains module, received frame rate variance obtains module and Caton prediction module；The received frame rate obtains module, for obtaining
In the current preset period in continuous unit time the main video flowing received frame rate；Wherein, the main view frequency
The received frame rate of stream is the video image frame number of received main video flowing in the unit time；The received frame rate variance obtains mould
Block obtains within the current preset period for the received frame rate based on main video flowing described in the unit time
The variance of the main video flowing received frame rate；The Caton prediction module, if for the main video flowing within the current preset period
Received frame rate variance be greater than Caton threshold value, then it is assumed that the received main video flowing within the current preset period
The broadcasting of video image frame will will appear Caton.
The prediction technique and device of live play Caton proposed by the present invention, by obtaining in the current preset period
The received frame rate of the main video flowing in interior continuous unit time, based on main video flowing described in the unit time
Received frame rate obtains the variance of the main video flowing received frame rate within the current preset period, if in current preset
Between in section the variance of the received frame rate of main video flowing be greater than Caton threshold value, then it is assumed that it is received within the current preset period
The broadcasting of the video image frame of the main video flowing will will appear Caton, so as to be taken in time accordingly according to the prediction result
Wording avoids playing the appearance of Caton.
According to the third aspect of the invention we, a kind of computer program product is provided, the computer program product includes depositing
The computer program in non-transient computer readable storage medium is stored up, the computer program includes program instruction, when described
When program instruction is computer-executed, make the method for the computer execution as described in relation to the first aspect.
According to the fourth aspect of the invention, a kind of non-transient computer readable storage medium is provided, which is characterized in that described
Non-transient computer readable storage medium stores computer instruction, and the computer instruction makes the computer execute such as first party
Method described in face.
According to the fifth aspect of the invention, a kind of switching method of live play Caton is provided, this method comprises: step
21, if predicting main video flowing will occur playing Caton, obtain the current time stamp of the main video flowing being played on；Its
In, the received frame rate of the main video flowing is the video image frame number of received main video flowing in the unit time；Step 22, it is based on
The variance of the received frame rate of each auxiliary video flowing of preset number, obtains new main video flowing within the current preset period；
Step 23, it based on the new main video flowing and the current time stamp, switches to current described in the new main video flowing
The new main video flowing is played at timestamp.
The first possible implementation in conjunction with fifth aspect present invention, in second of possible implementation, the step
Further comprise if predicting main video flowing in 21 for appearance broadcasting Caton: obtaining continuous within the current preset period
The received frame rate of the main video flowing in unit time；Wherein, the received frame rate of the main video flowing is inscribed for the unit time
The video image frame number for the main video flowing received；Based on the received frame rate of main video flowing described in the unit time, obtain
The variance of the main video flowing received frame rate in the current preset period；If the main video flowing within the current preset period
The variance of received frame rate is greater than Caton threshold value, then it is assumed that the view of the received main video flowing within the current preset period
The broadcasting of frequency picture frame will will appear Caton.
The first possible implementation in conjunction with fifth aspect present invention, in the third possible implementation, the step
22 further comprise: by the variance of received frame rate is the smallest in the auxiliary video flowing of preset number within the current preset period
Auxiliary video flowing is as the new main video flowing.
According to the sixth aspect of the invention, a kind of switching device of live play Caton is provided.When the device includes: current
Between stamp obtains module, new main video flowing obtains module and switching module；The current time stamp obtains module, if for predicting
Main video flowing will occur playing Caton out, obtain the current time stamp of the main video flowing being played on；Wherein, the main view
The received frame rate of frequency stream is the video image frame number of received main video flowing in the unit time；The new main video flowing obtains mould
Block obtains new for the variance based on the received frame rate of each auxiliary video flowing of preset number within the current preset period
Main video flowing；The switching module, for switching to described new based on the new main video flowing and the current time stamp
Main video flowing described in the new main video flowing is played at current time stamp, and the new main video flowing is repeated above-mentioned
Handoff procedure.
The switching method and device of live play Caton proposed by the present invention, by using multi-channel network line transmission video
Resource, so that the available multiple video flowings in end are played, when main video flowing being played on is not sufficiently stable, may cause broadcasting card
Immediately, the current video current time stamp of main video flowing being played on is obtained, and finds out video flowing from multiple auxiliary video flowings
Most stable of auxiliary video flowing switches at the same video current time stamp of new main video flowing and continues as new main video flowing
It plays, so as to avoid the broadcasting Caton phenomenon being likely to occur.
Detailed description of the invention
Fig. 1 is the prediction technique flow chart according to the live play Caton of the embodiment of the present invention；
Fig. 2 is the prediction technique flow chart according to the live play Caton of the embodiment of the present invention；
Fig. 3 is the prediction meanss schematic diagram according to the live play Caton of the embodiment of the present invention；
Fig. 4 is the structural block diagram according to the test equipment of the prediction meanss of the live play Caton of the embodiment of the present invention；
Fig. 5 is the switching method flow chart according to the live play Caton of the embodiment of the present invention；
Fig. 6 is the switching method flow chart according to the live play Caton of the embodiment of the present invention；
Fig. 7 is the switching device schematic diagram according to the live play Caton of the embodiment of the present invention；
Fig. 8 is the structural block diagram according to the test equipment of the switching device of the live play Caton of the embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
As shown in Figure 1, according to the first aspect of the invention, providing a kind of prediction technique of live play Caton, this method
Include: step 11, obtains the receiving frame of the main video flowing in continuous unit time within the current preset period
Rate；Wherein, the received frame rate of the main video flowing is the video image frame number of received main video flowing in the unit time；Step
12, based on the received frame rate of main video flowing described in the unit time, obtain described within the current preset period
The variance of main video flowing received frame rate；Step 13, if the variance of the received frame rate of main video flowing is big within the current preset period
In Caton threshold value, then it is assumed that the broadcasting of the video image frame of the received main video flowing will within the current preset period
It will appear Caton.
The prediction technique of live play Caton proposed by the present invention, it is continuous within the current preset period by obtaining
Unit time in the main video flowing received frame rate, the receiving frame based on main video flowing described in the unit time
Rate obtains the variance of the main video flowing received frame rate within the current preset period, if within the current preset period
The variance of the received frame rate of main video flowing is greater than Caton threshold value, then it is assumed that the received master within the current preset period
The broadcasting of the video image frame of video flowing will will appear Caton, so as to take corresponding wording to keep away in time according to the prediction result
Exempt from the appearance of broadcasting Caton.
As a kind of alternative embodiment, the step 12 further comprises: based on the main view in the unit time
The received frame rate of frequency stream, obtains the average value of the main video flowing received frame rate in the current preset period；Based on described
The received frame rate and the average value of the main video flowing in unit time obtain described within the current preset period
The variance of main video flowing received frame rate.
As a kind of alternative embodiment, the corresponding calculation formula of the step 12 is as follows:
(m1+m2+…+mn)/n=u,
[(m1-u)2+(m2-u)2+…+(mn-u)2]/n=v,
Wherein, m1, m2... ..., mnFor the received frame rate of the main video flowing in unit time respectively；N is current preset
The number for the unit time that period includes；U is the average value of the main video flowing received frame rate in the current preset period；v
For the variance of main video flowing received frame rate described in the current preset period.
Based on the method that above-mentioned Fig. 1 corresponding embodiment provides, the embodiment of the invention provides a kind of live play Catons
Prediction technique.Referring to fig. 2, this method comprises:
101, obtain the receiving frame of the main video flowing in continuous unit time within the current preset period
Rate；
102, based on the received frame rate of main video flowing described in the unit time, obtain the current preset period
The average value of the interior main video flowing received frame rate；
103, based on the received frame rate and the average value of main video flowing described in the unit time, obtain described
The variance of the main video flowing received frame rate in the current preset period；
104, if the variance of the received frame rate of main video flowing is greater than Caton threshold value within the current preset period, then it is assumed that
The broadcasting of the video image frame of the received main video flowing will will appear Caton in the current preset period.
Since video flowing has the fixed frame per second i.e. video flowing interior video image frame number for including per second certain, then, if
It plays the end interior video image frame number received per second and the frame per second of the video flowing is roughly equal, then it is believed that the video flowing stream
Freely；If playing the end interior video image frame number received per second and the frame per second of the video flowing differing greatly, it is believed that the view
Frequency stream Caton simultaneously can cause to play Caton.And if then the it is believed that video image frame number wave received within the unit time
Dynamic smaller, then video flowing is smooth；If the video image frame number received within the unit time fluctuates larger, video flowing card
?.
From angle of statistics, it is believed that the video figure received in continuous unit time in preset time period
As the variance of frame number shows the fluctuation size of the video image frame number received in the unit time within a preset period of time.It is i.e. square
Difference is smaller, and the fluctuation of the video image frame number received in the unit time within a preset period of time is smaller, and video flowing is more smooth；Side
Difference is bigger, and the fluctuation of the video image frame number received in the unit time within a preset period of time is bigger, and video flowing gets over Caton.Cause
This, can be by the variance of the video image frame number of main video flowing in acquisition preset time period, to judge whether main video flowing blocks
?.For convenience, the video image frame number of main view frequency stream will be received in the unit time as the receiving frame of main video flowing
Rate.
In the present embodiment, main video flowing can be the view originally from best one whole network line of Network status
Frequency flows, and can also be to pass through to play the new main video flowing that Caton ameliorative way obtains.Preset time period and unit time can be with
It is determined according to the actual situation, the present embodiment is not construed as limiting this.For example, preset time period is 1 minute, the unit time 1
Second.Same video resource is transmitted to according to 5 road network routes and plays end, then can receive at broadcasting end to 1 main view frequency
Stream and 4 auxiliary video flowings, and the received frame rate of continuous 60 main video flowings in 1 second can be obtained in current 1 minute.Assuming that receiving
Frame per second is followed successively by m1, m2... ..., m60.So, the received frame rate m based on this 60 main video flowings in 1 second1, m2... ..., m60, can
Calculate the average value u of the received frame rate of main video flowing in current 1 minute, and based on the main view frequency in 1 second of 60 in current 1 minute
The received frame rate m of stream1, m2... ..., m60With average value u, the variance v of the received frame rate of main video flowing in current 1 minute is calculated,
Calculation formula is as follows:
(m1+m2+…+m60)/60=u,
[(m1-u)2+(m2-u)2+…+(m60-u)2]/60=v.
Caton threshold value is the upper limit of main video flowing stability range, according to the main video flowing described within the current preset period
The variance of received frame rate and the comparison result of Caton threshold value, it can be determined that whether currently playing main video flowing is stable, Jin Ershi
It is no to will lead to broadcasting Caton, to further determine whether the broadcasting Caton for needing to take measures to avoid to occur.It is even main
The variance of the received frame rate of video flowing is greater than Caton threshold value, shows that currently playing main video flowing is unstable, may result in and broadcast
Caton is put, needs to switch to other auxiliary video flowings and plays out；If the variance of the received frame rate of main video flowing is less than or equal to card
Threshold value shows that currently playing main video flowing is stablized, cannot will lead to broadcasting Caton, can continue to play.Caton threshold value
Value can empirically or experimentally statistical data be configured, and the present embodiment is it is not limited here.
As shown in figure 3, according to the second aspect of the invention, providing a kind of prediction meanss of live play Caton.The device
It include: that received frame rate obtains module, received frame rate variance obtains module and Caton prediction module；The received frame rate obtains mould
Block, for obtaining the received frame rate of the main video flowing in continuous unit time within the current preset period；Its
In, the received frame rate of the main video flowing is the video image frame number of received main video flowing in the unit time；The receiving frame
Rate variance obtains module, for the received frame rate based on main video flowing described in the unit time, obtains described current
The variance of the main video flowing received frame rate in preset time period；The Caton prediction module, if in the current preset time
The variance of the received frame rate of main video flowing is greater than Caton threshold value in section, then it is assumed that the received institute within the current preset period
The broadcasting for stating the video image frame of main video flowing will will appear Caton.
The prediction meanss of live play Caton proposed by the present invention obtain module by received frame rate, and acquisition is worked as described
In preceding preset time period in continuous unit time the main video flowing received frame rate, pass through received frame rate variance obtain mould
Block is obtained described within the current preset period based on the received frame rate of main video flowing described in the unit time
The variance of main video flowing received frame rate, by Caton prediction module, if within the current preset period main video flowing receiving frame
The variance of rate is greater than Caton threshold value, then it is assumed that the video image of the received main video flowing within the current preset period
The broadcasting of frame will will appear Caton, so as to take corresponding wording to avoid playing going out for Caton in time according to the prediction result
It is existing.
As a kind of alternative embodiment, the received frame rate variance obtains module, when being specifically used for based on the constituent parts
The received frame rate of the interior main video flowing obtains being averaged for the main video flowing received frame rate in the current preset period
Value；Based on the received frame rate and the average value of main video flowing described in the unit time, obtain in the current preset
The variance of the main video flowing received frame rate in period.
As a kind of alternative embodiment, the received frame rate variance obtains module and is specifically used for according to following calculation formula meter
Calculate the variance of the main video flowing received frame rate in the current preset period:
(m1+m2+…+mn)/n=u,
[(m1-u)2+(m2-u)2+…+(mn-u)2]/n=v,
Wherein, m1, m2... ..., mnFor the received frame rate of the main video flowing in unit time respectively；N is current preset
The number for the unit time that period includes；U is the average value of the main video flowing received frame rate in the current preset period；v
For the variance of main video flowing received frame rate described in the current preset period.
Fig. 4 is the structural block diagram for showing the test equipment of prediction meanss of live play Caton of the present invention.
Referring to Fig. 4, the test equipment of the display device, comprising: processor (processor) 401, memory
(memory) 402, communication interface (Communications Interface) 403 and bus 404；
Wherein, the processor 401, memory 402, communication interface 403 complete mutual lead to by the bus 404
Letter；
The communication interface 403 is for the information transmission between the test equipment and the communication equipment of display device；
The processor 401 is used to call the program instruction in the memory 402, to execute above-mentioned each method embodiment
Provided method, for example, obtain within the current preset period in continuous unit time the main view frequently
The received frame rate of stream；Obtain the variance of the main video flowing received frame rate within the current preset period.
The present embodiment discloses a kind of computer program product, and the computer program product includes being stored in non-transient calculating
Computer program on machine readable storage medium storing program for executing, the computer program include program instruction, when described program instruction is calculated
When machine executes, computer is able to carry out method provided by above-mentioned each method embodiment, for example, obtains described current pre-
If in the period in continuous unit time the main video flowing received frame rate；It obtains within the current preset period
The variance of the main video flowing received frame rate.
The present embodiment provides a kind of non-transient computer readable storage medium, the non-transient computer readable storage medium
Computer instruction is stored, the computer instruction makes the computer execute method provided by above-mentioned each method embodiment, example
It such as include: the received frame rate for obtaining the main video flowing in continuous unit time within the current preset period；It obtains
Take the variance of the main video flowing received frame rate within the current preset period.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: ROM, RAM, magnetic disk or light
The various media that can store program code such as disk.
The embodiments such as the test equipment of prediction meanss of live play Caton described above are only schematical,
Described in as illustrated by the separation member unit may or may not be physically separated, portion shown as a unit
Part may or may not be physical unit, it can and it is in one place, or may be distributed over multiple network lists
In member.Some or all of the modules therein can be selected to achieve the purpose of the solution of this embodiment according to the actual needs.This
Field those of ordinary skill is without paying creative labor, it can understands and implements.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
It realizes by means of software and necessary general hardware platform, naturally it is also possible to pass through hardware.Based on this understanding, on
Stating technical solution, substantially the part that contributes to existing technology can be embodied in the form of software products in other words, should
Computer software product may be stored in a computer readable storage medium, such as ROM/RAM, magnetic disk, CD, including several fingers
It enables and using so that a computer equipment (can be personal computer, server or the network equipment etc.) executes each implementation
Method described in certain parts of example or embodiment.
As shown in figure 5, according to the fifth aspect of the invention, providing a kind of switching method of live play Caton, this method
Include: step 21, if predicting main video flowing will occur playing Caton, obtain the main video flowing being played on it is current when
Between stab；Wherein, the received frame rate of the main video flowing is the video image frame number of received main video flowing in the unit time；Step
22, based on the variance of the received frame rate of each auxiliary video flowing of preset number within the current preset period, obtain new master
Video flowing；Step 23, based on the new main video flowing and the current time stamp, institute in the new main video flowing is switched to
It states and plays the new main video flowing at current time stamp.
The switching method of live play Caton proposed by the present invention, by using multi-channel network line transmission video resource,
So that the available multiple video flowings in end are played, when main video flowing being played on is not sufficiently stable, may cause broadcasting Caton,
The current video current time stamp of main video flowing being played on is obtained, and it is most stable from multiple auxiliary video flowings to find out video flowing
Auxiliary video flowing as new main video flowing, switch at the same video current time stamp of new main video flowing and continue to play,
So as to avoid the broadcasting Caton phenomenon being likely to occur.
As a kind of alternative embodiment, further wrapped if predicting main video flowing in the step 21 and broadcasting Caton will occur
It includes: obtaining the received frame rate of the main video flowing in continuous unit time within the current preset period；Wherein, institute
The received frame rate for stating main video flowing is the video image frame number of received main video flowing in the unit time；When based on the constituent parts
The received frame rate of the interior main video flowing obtains the side of the main video flowing received frame rate within the current preset period
Difference；If the variance of the received frame rate of main video flowing is greater than Caton threshold value within the current preset period, then it is assumed that described current
The broadcasting of the video image frame of the received main video flowing will will appear Caton in preset time period.
As a kind of alternative embodiment, the step 22 further comprises: will preset within the current preset period
The smallest auxiliary video flowing of the variance of received frame rate is as the new main video flowing in the auxiliary video flowing of number.
Based on the method that above-mentioned Fig. 5 corresponding embodiment provides, the embodiment of the invention provides a kind of live play Catons
Switching method.Referring to Fig. 6, this method comprises:
201, if predicting main video flowing will occur playing Caton, obtain the main video flowing being played on it is current when
Between stab；
202, obtain the variance of the received frame rate of the auxiliary video flowing of each preset number within the current preset period；
203, based on the variance of the received frame rate of each auxiliary video flowing of preset number within the current preset period, obtain
Take new main video flowing；
204, based on the new main video flowing and the current time stamp, switch to described in the new main video flowing
The new main video flowing is played at current time stamp.
Wherein, 201, if predicting main video flowing will occur playing Caton, obtain the main video flowing being played on
Current time stamp.
The present embodiment further includes broadcasting Caton whether will occur to main video flowing to predict before step 201, is predicted
Method includes but is not limited to: the prediction technique that Fig. 2 corresponding embodiment proposes.Current time stamp is the currently playing position of main video flowing
It sets, it is associated with the video image frame of video flowing, it can be in subsequent Switch Video stream for being positioned.
When predicting main video flowing will occur playing Caton, need to switch to obtained from other auxiliary video flowings it is new
Main view frequency stream plays out.In order to realize that playing resource switches to new main video flowing from main video flowing being played on, need
Video image frame being played on is positioned.In the present embodiment, positioning method including but not limited to: based on being playing
The current time stamp of main video flowing positioned.I.e. when the variance of the received frame rate of main video flowing being played on is greater than Caton
When threshold value, the current time stamp of main video flowing being played on is immediately obtained, to look in switching according to the current time stamp
Into new main video flowing, corresponding video image frame continues to play.
In addition, in the present embodiment, for the continuity for ensuring broadcasting pictures, taking and receiving the master being played on
After the video image frame of video flowing, the video image frame is played by prefixed time interval.Pass through the prefixed time interval that is delayed
After play the video image frame, can complete before playing the video image frame based on the stability to main video flowing
Judgement selects video image frame described in more stable video render and carries out video flowing switching, to ensure that broadcasting pictures
Continuity.
Wherein, 202, obtain the side of the received frame rate of the auxiliary video flowing of each preset number within the current preset period
Difference.
When predicting main video flowing for occurring playing Caton, need to obtain video flowing from the auxiliary video flowing of preset number
Most stable of auxiliary video stream, for being played out after switching.Pass through main view in prediction technique based on live play Caton
The variance of frequency stream received frame rate is equally existed using each auxiliary video flowing of calculating in this step to measure the stability of main video flowing
The method of the variance of received frame rate in preset time period measures the stability of each auxiliary video flowing.Each auxiliary video flowing is pre-
If main video flowing in the prediction technique of the circular of the variance of the received frame rate in the period and live play Caton
The calculation method of the variance of received frame rate is similar, no longer repeats herein.
Wherein, 203, the side based on the received frame rate of each auxiliary video flowing of preset number within the current preset period
Difference obtains new main video flowing.
In the present embodiment, the received frame rate based on each auxiliary video flowing of preset number within the current preset period
Variance, obtain the method for new main video flowing including but not limited to: using the smallest auxiliary video flowing of the variance of received frame rate as
New main video flowing, i.e., using the most stable of video flowing of video flowing as new main video flowing.Due to receiving frame in preset time period
The variance of rate is bigger, and video image frame number is bigger around the variation of the average value of video image frame number, and video flowing is more unstable
It is fixed；On the contrary, the variance of video image frame number is smaller, change of the video image frame number around the average value of video image frame number
Change smaller, video flowing is more stable.It therefore, can be by video image frame after the variance for obtaining each auxiliary video flowing video image frame number
The smallest auxiliary video flowing of the variance of number is as new main video flowing, i.e., using the most stable of video flowing of video flowing as new main view
Frequency flows.
Wherein, 204, based on the new main video flowing and the current time stamp, switch to the new main video flowing
Described in the new main video flowing is played at current time stamp.
After obtaining new main video flowing and current time stamp, need to carry out the switching of video flowing.Due to current time stamp
It is associated with the video image frame of video flowing for the current play position of main video flowing, therefore, when switching, in new main view frequency
It is positioned in stream according to the current time stamp of acquisition, it is ensured that video image frame and former main view at new main video flowing positioning
Video image frame at frequency stream current time stamp position is identical, to guarantee that switching to new main view frequency from former main video flowing flows into
The continuity of picture when row plays.
As shown in fig. 7, according to the sixth aspect of the invention, providing a kind of switching device of live play Caton.The device
It include: that current time stamp obtains module, new main video flowing obtains module and switching module；The current time stamp obtains mould
Block obtains the current time stamp of the main video flowing being played on if will occur playing Caton for predicting main video flowing；
Wherein, the received frame rate of the main video flowing is the video image frame number of received main video flowing in the unit time；It is described new
Main video flowing obtains module, for the received frame rate based on each auxiliary video flowing of preset number within the current preset period
Variance, obtain new main video flowing；The switching module, for based on the new main video flowing and the current time
Stamp switches at current time stamp described in the new main video flowing and plays the new main video flowing, and to described new
Main video flowing repeats above-mentioned handoff procedure.
The switching device of live play Caton proposed by the present invention, by using multi-channel network line transmission video resource,
So that playing the available multiple video flowings in end, module is obtained by current time stamp, when main video flowing being played on is inadequate
When stablizing, may cause broadcasting Caton, the current video current time stamp of main video flowing being played on is obtained, new master is passed through
Video flowing obtains module, and the most stable of auxiliary video flowing of video flowing is found out from multiple auxiliary video flowings as new main video flowing, is led to
Switching module is crossed, switches at the same video current time stamp of new main video flowing and continues to play, so as to avoid that may go out
Existing broadcasting Caton phenomenon.
As a kind of alternative embodiment, the current time stamp obtains module also particularly useful for acquisition in the current preset
In period in continuous unit time the main video flowing received frame rate；Wherein, the received frame rate of the main video flowing
For the video image frame number of main video flowing received in the unit time；It is connect based on the main video flowing in the unit time
Frame per second is received, the variance of the main video flowing received frame rate within the current preset period is obtained；If in the current preset time
The variance of the received frame rate of main video flowing is greater than Caton threshold value in section, then it is assumed that the received institute within the current preset period
The broadcasting for stating the video image frame of main video flowing will will appear Caton.
As a kind of alternative embodiment, the new main video flowing acquisition module is specifically used for will be in the current preset
Between in section in the auxiliary video flowing of preset number the smallest auxiliary video flowing of variance of received frame rate as the new main video flowing.
Fig. 8 is the structural block diagram for showing the test equipment of switching device of live play Caton of the present invention.
Referring to Fig. 8, the test equipment of the display device, comprising: processor (processor) 801, memory
(memory) 802, communication interface (Communications Interface) 803 and bus 804；
Wherein, the processor 801, memory 802, communication interface 803 complete mutual lead to by the bus 804
Letter；
The communication interface 803 is for the information transmission between the test equipment and the communication equipment of display device；
The processor 801 is used to call the program instruction in the memory 802, to execute above-mentioned each method embodiment
Provided method, for example, obtain the current time stamp of the main video flowing being played on；Based on described current pre-
If the variance of the received frame rate of each auxiliary video flowing of preset number, obtains new main video flowing in the period.
The present embodiment discloses a kind of computer program product, and the computer program product includes being stored in non-transient calculating
Computer program on machine readable storage medium storing program for executing, the computer program include program instruction, when described program instruction is calculated
When machine executes, computer is able to carry out method provided by above-mentioned each method embodiment, for example, obtains institute being played on
State the current time stamp of main video flowing；Receiving frame based on each auxiliary video flowing of preset number within the current preset period
The variance of rate obtains new main video flowing.
The present embodiment provides a kind of non-transient computer readable storage medium, the non-transient computer readable storage medium
Computer instruction is stored, the computer instruction makes the computer execute method provided by above-mentioned each method embodiment, example
Current time stamp included: main video flowing as described in acquisition is being played on；Based on default within the current preset period
The variance of the received frame rate of each auxiliary video flowing of number, obtains new main video flowing.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: ROM, RAM, magnetic disk or light
The various media that can store program code such as disk.
The embodiments such as the test equipment of switching device of live play Caton described above are only schematical,
Described in as illustrated by the separation member unit may or may not be physically separated, portion shown as a unit
Part may or may not be physical unit, it can and it is in one place, or may be distributed over multiple network lists
In member.Some or all of the modules therein can be selected to achieve the purpose of the solution of this embodiment according to the actual needs.This
Field those of ordinary skill is without paying creative labor, it can understands and implements.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
It realizes by means of software and necessary general hardware platform, naturally it is also possible to pass through hardware.Based on this understanding, on
Stating technical solution, substantially the part that contributes to existing technology can be embodied in the form of software products in other words, should
Computer software product may be stored in a computer readable storage medium, such as ROM/RAM, magnetic disk, CD, including several fingers
It enables and using so that a computer equipment (can be personal computer, server or the network equipment etc.) executes each implementation
Method described in certain parts of example or embodiment.
Finally, method of the invention is only preferable embodiment, it is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (10)
1. a kind of prediction technique of live play Caton characterized by comprising
Step 11, the receiving frame of the main video flowing in continuous unit time within the current preset period is obtained
Rate；Wherein, the received frame rate of the main video flowing is the video image frame number of received main video flowing in the unit time；
Step 12, the received frame rate based on main video flowing described in the unit time was obtained in the current preset time
The variance of the main video flowing received frame rate in section；
Step 13, if the variance of the received frame rate of main video flowing is greater than Caton threshold value within the current preset period, then it is assumed that
The broadcasting of the video image frame of the received main video flowing will will appear Caton in the current preset period.
2. the method according to claim 1, wherein the step 12 further comprises:
Based on the received frame rate of main video flowing described in the unit time, the master in the current preset period is obtained
The average value of video flowing received frame rate；
Based on the received frame rate and the average value of main video flowing described in the unit time, obtain in the current preset
The variance of the main video flowing received frame rate in period.
3. according to the method described in claim 2, it is characterized in that, the corresponding calculation formula of the step 12 is as follows:
(m1+m2+…+mn)/n=u,
(m1-u)2+(m2-u)2+…+(mn-u)2/ n=v,
Wherein, m1, m2... ..., mnFor the received frame rate of the main video flowing in unit time respectively；N is the current preset time
The number for the unit time that section includes；U is the average value of the main video flowing received frame rate in the current preset period；V is to work as
The variance of the main video flowing received frame rate in preceding preset time period.
4. a kind of switching method of live play Caton characterized by comprising
Step 21, if predicting main video flowing will occur playing Caton, obtain the main video flowing being played on it is current when
Between stab；Wherein, the received frame rate of the main video flowing is the video image frame number of received main video flowing in the unit time；
Step 22, the variance based on the received frame rate of each auxiliary video flowing of preset number within the current preset period, is obtained
Take new main video flowing；
Step 23, it based on the new main video flowing and the current time stamp, switches to described in the new main video flowing
The new main video flowing is played at current time stamp.
5. according to the method described in claim 4, it is characterized in that, if predicting main video flowing in the step 21 will broadcast
Putting Caton further comprises:
Obtain the received frame rate of the main video flowing in continuous unit time within the current preset period；Wherein,
The received frame rate of the main video flowing is the video image frame number of received main video flowing in the unit time；
Based on the received frame rate of main video flowing described in the unit time, obtain described within the current preset period
The variance of main video flowing received frame rate；
If the variance of the received frame rate of main video flowing is greater than Caton threshold value within the current preset period, then it is assumed that described current
The broadcasting of the video image frame of the received main video flowing will will appear Caton in preset time period.
6. according to the method described in claim 4, it is characterized in that, the step 22 further comprises: will be described current pre-
If in the period in the auxiliary video flowing of preset number the smallest auxiliary video flowing of the variance of received frame rate as the new main view frequency
Stream.
7. a kind of prediction meanss of live play Caton characterized by comprising received frame rate obtains module, received frame rate side
Difference obtains module and Caton prediction module；
The received frame rate obtains module, is used to obtain described in continuous unit time within the current preset period
The received frame rate of main video flowing；Wherein, the received frame rate of the main video flowing is the view of received main video flowing in the unit time
Frequency number of image frames；
The received frame rate variance obtains module, for the received frame rate based on main video flowing described in the unit time,
Obtain the variance of the main video flowing received frame rate within the current preset period；
The Caton prediction module, if the variance of the received frame rate for video flowing main within the current preset period is greater than Caton
Threshold value, then it is assumed that the broadcasting of the video image frame of the received main video flowing will will appear within the current preset period
Caton.
8. a kind of switching device of live play Caton characterized by comprising current time stamp obtains module, new main view
Frequency stream obtains module and switching module；
The current time stamp obtains module, if will occur playing Caton for predicting main video flowing, obtains being played on
The current time stamp of the main video flowing；Wherein, the received frame rate of the main video flowing is received main view frequency in the unit time
The video image frame number of stream；
The new main video flowing obtains module, for each auxiliary video based on the preset number within the current preset period
The variance of the received frame rate of stream obtains new main video flowing；
The switching module, for switching to the new main view based on the new main video flowing and the current time stamp
The new main video flowing is played at current time stamp described in frequency stream, and above-mentioned switched is repeated to the new main video flowing
Journey.
9. a kind of computer program product, which is characterized in that the computer program product includes being stored in non-transient computer
Computer program on readable storage medium storing program for executing, the computer program include program instruction, when described program is instructed by computer
When execution, the computer is made to execute the method as described in claims 1 to 3 is any.
10. a kind of non-transient computer readable storage medium, which is characterized in that the non-transient computer readable storage medium is deposited
Computer instruction is stored up, the computer instruction makes the computer execute the method as described in claims 1 to 3 is any.
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