CN104661088A - Video source switching method and device - Google Patents
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- CN104661088A CN104661088A CN201310596374.XA CN201310596374A CN104661088A CN 104661088 A CN104661088 A CN 104661088A CN 201310596374 A CN201310596374 A CN 201310596374A CN 104661088 A CN104661088 A CN 104661088A
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Abstract
The invention discloses a video source switching method and a video source switching device. The video source switching method comprises the following steps: a client side detects the code rate of a local currently-played video source and the current network transmission speed; the client side acquires the code rates of playable video sources respectively; when the client side determines that the ratio of the current network transmission speed to the code rate of the currently-played video source reaches a preset threshold, the client side switches the currently-played video source to a video source of which the code rate meets a preset condition. Through adoption of the technical scheme, the ratio of the current network transmission speed to the code rate of the currently-played video source is used as a criterion for judging whether to switch the video source, and according to the code rates of the playable video sources at the client side, the final target video source is selected to play, so that a blind video source switching action is avoided on the basis of ensuring smooth video playing, and further the burden on a system is reduced and the network performance is effectively improved.
Description
Technical field
The present invention relates to multimedia technology field, particularly relate to a kind of video source changing method and device.
Background technology
Along with the develop rapidly of multimedia technology, various ways can be adopted to carry out transmission and the broadcasting of Streaming Media, wherein, P2P(Peer to Peer; Point-to-point) stream media system is a kind of conventional streaming media and Play System.
In existing P2P stream media system, streaming medium content is cut into multiple data block (chunk), using each data block as the base unit of transmission of flow media data, thus complete continuous print data flow and transmit between node (Peer), wherein, each data block is represented by unique chunk id.Sharing and exchanging the buffered message (being called for short BM) all depending on the description node buffer status exchanged between node of programme content, namely completes sharing of programme content by buffered message and exchanges.
At present, in P2P stream media system, when the current video play to cause unstable networks because network quality is not good or current time network transfer speeds is lower, user may by the smooth video of client viewing.For above-mentioned technical problem, in prior art, usually the mode by presetting network transfer speeds threshold value in the client carries out the switching of video source, when client judges local current time network transfer speeds lower than this default network transfer speeds threshold value, namely carries out the switching of video source.
When adopting technique scheme to carry out the switching of video source, the switching of video source can be completed comparatively quickly, ensure that user can obtain more smooth video display effect, but, when current time network transfer speeds is lower than default network transfer speeds threshold value, if the network bandwidth is less shared by the current video source play of client, then user still likely obtains comparatively smooth video display effect, and client will be caused to switch video source blindly based on the technical scheme of prior art, thus it is frequent to cause video source to switch, add system burden, reduce network performance.
As can be seen here, in the handoff procedure of video source, there is system burden weight in prior art, the problem of network performance difference.
Summary of the invention
The embodiment of the present invention provides a kind of video source changing method and device, in order to solve prior art in the handoff procedure of video source, there is system burden weight, the problem of network performance difference.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
The invention provides a kind of video source changing method, be applied in point-to-point stream media system, comprise:
Client detects code check and the current time network transfer speeds of the local current video source play; And
Described client obtains each respectively can the code check in displaying video source;
When described client judges that the ratio of the source code rate of described current time network transfer speeds and the described current video play reaches predetermined threshold value, what obtain from described client allly can meet pre-conditioned any video source by selected code check displaying video source, switches to play selected described any video source by playing the described current video source play.
Optionally, described client judges that the ratio of the source code rate of described current time network transfer speeds and the described current video play is less than or equal to the first predetermined threshold value.
Optionally, what obtain from described client allly can meet the first pre-conditioned video source process and be by selected described code check displaying video source: what obtain from described client allly can be greater than the first predetermined threshold value by the ratio of selected described current time network transfer speeds and code check displaying video source, and is less than or equal to any video source of the second predetermined threshold value; Wherein, the first predetermined threshold value is less than the second predetermined threshold value.
Adopt technique scheme, when the code check of current time network transfer speeds and the current video source play is less than or equal to the first predetermined threshold value, namely think that continuing to play this current video source play may occur playing slack problem, thus from selected optimum video source switching displaying video source, ensure that the fluency of video display process.
Optionally, described client judges that the ratio of the code check of described current time network transfer speeds and the described current video source play is greater than the second predetermined threshold value.
Optionally, what obtain from described client allly can selected described code check meets pre-conditioned any video source displaying video source process be: what obtain from described client allly can be less than or equal to the second predetermined threshold value by the ratio of selected described current time network transfer speeds and code check displaying video source, and is greater than any video source of the first predetermined threshold value; Wherein, the first predetermined threshold value is less than the second predetermined threshold value.
Adopt technique scheme, when the code check of current time network transfer speeds and the current video source play is greater than the second predetermined threshold value, namely think that current time network quality is good, the code check of the current video source play can be improved further, from selected optimum video source switching displaying video source, the definition of video playback can be ensure that.
The invention provides a kind of video source switching device shifter, be applied in point-to-point stream media system, comprise:
Detecting unit, for detecting code check and the current time network transfer speeds of the local current video source play;
Acquiring unit, can the code check in displaying video source for obtaining each respectively;
Switch unit, when ratio for the code check judging described current time network transfer speeds and the described current video source play reaches predetermined threshold value, allly can meet pre-conditioned any video source by selected code check displaying video source from what obtain, switch to play selected described any video source by playing the described current video source play.
Optionally, described switch unit, specifically for, judge that the ratio of the code check of described current time network transfer speeds and the described current video source play is less than or equal to the first predetermined threshold value.
Optionally, described switch unit, specifically for, allly can be greater than the first predetermined threshold value by the ratio of selected described current time network transfer speeds and code check displaying video source from what obtain, and be less than or equal to any video source of the second predetermined threshold value; Wherein, the first predetermined threshold value is less than the second predetermined threshold value.
Adopt technique scheme, when the code check of current time network transfer speeds and the current video source play is less than or equal to the first predetermined threshold value, namely think that continuing to play this current video source play may occur playing slack problem, thus from selected optimum video source switching displaying video source, ensure that the fluency of video display process.
Optionally, described switch unit, specifically for, judge that the ratio of the code check of described current time network transfer speeds and the described current video source play is greater than the second predetermined threshold value.
Optionally, described switch unit, specifically for, allly can be less than or equal to the second predetermined threshold value by the ratio of selected described current time network transfer speeds and code check displaying video source from what obtain, and be greater than any video source of the first predetermined threshold value; Wherein, the first predetermined threshold value is less than the second predetermined threshold value.
Adopt technique scheme, when the code check of current time network transfer speeds and the current video source play is greater than the second predetermined threshold value, namely think that current time network quality is good, the code check of the current video source play can be improved further, from selected optimum video source switching displaying video source, the definition of video playback can be ensure that.
In the embodiment of the present invention, client detects the code check of the local current video source play, ratio according to the code check of current time network transfer speeds and this current video source play determines whether switching video source, and when client judges to need the switching carrying out video source, the code check in displaying video source can carry out selected code check and meet pre-conditioned video source according to this locality, and switch to code check by the current video source play and meet pre-conditioned video source.Adopt technical solution of the present invention, using the ratio of the code check of current time network transfer speeds and the current video source play as the standard whether switched video source, and the code check in displaying video source can select the target video source finally switched to according to client, thus on the basis ensureing video smooth playing, avoid video source switching action blindly, and then reduce system burden, effectively improve network performance.
Accompanying drawing explanation
Fig. 1 is video source switching flow figure in the embodiment of the present invention;
Fig. 2 is video switch flow chart under embody rule scene in the embodiment of the present invention;
Fig. 3 is video switching device structural representation in the embodiment of the present invention.
Embodiment
Solve prior art in the handoff procedure of video source, there is system burden weight, in the problem embodiment of the present invention of network performance difference, client detects the code check of the local current video source play, ratio according to the code check of current time network transfer speeds and this current video source play determines whether switching video source, and when client judges to need the switching carrying out video source, the code check in displaying video source can carry out selected code check and meet pre-conditioned video source according to this locality, and the current video source play is switched to code check meet pre-conditioned video source.Adopt technical solution of the present invention, using the ratio of the code check of current time network transfer speeds and the current video source play as the standard whether switched video source, and the code check in displaying video source can select the target video source finally switched to according to client, thus on the basis ensureing video smooth playing, avoid video source switching action blindly, and then reduce system burden, effectively improve network performance.
The embodiment of the present invention is applied in point-to-point stream media system, is described in detail to the preferred embodiment of the present invention below in conjunction with accompanying drawing.
Consult shown in Fig. 1, in the embodiment of the present invention, the detailed process that video source switches is:
Step 100: client detects code check and the current time network transfer speeds of the local current video source play.
In the embodiment of the present invention, when user is by client viewing video, client can detect the code check of the current video source play, wherein, code check is the code stream bit number of transmitted per unit time, this value be characterize video source the parameter of video definition is provided, namely code check is larger, video definition that video source provides is higher, and code check is less, and video definition that video source provides is lower.
Detect the code check of the current video source play in client while, also need to detect current time network transfer speeds, current time network transfer speeds can adopt existing conventional method to detect, and also can be detected by existing network transfer speeds testing tool.
Step 110: client obtains each respectively can the code check in displaying video source.
In the embodiment of the present invention, corresponding to same video, client can obtain one or more can displaying video source, can can gather in displaying video source by displaying video source composition according to this one or more, this can displaying video source set in, each can displaying video source self code check all corresponding, namely each can the code check in displaying video source may be all not identical.Therefore, while the code check detecting the local current video source play in client and current time network transfer speeds, client obtains each respectively can the code check in displaying video source.
Step 120: when client judges that the ratio of the code check of above-mentioned current time network transfer speeds and the above-mentioned current video source play reaches predetermined threshold value, what obtain from client allly can meet pre-conditioned any video source by selected code check displaying video source, is switched to play above-mentioned selected any video source by the above-mentioned current video source play of broadcasting.
In the embodiment of the present invention, the ratio of the code check of client Real-Time Monitoring current time network transfer speeds and the current video source play, can switch video source when this ratio meets predetermined threshold value, namely switch to the better video source of broadcasting by the current video source play of broadcasting.Wherein, two kinds of situations are comprised to the switching of video source, namely switch to by playing the current video source play the video source play and to have high code rate relative to the code check of the current video source play, or switch to play and have video source compared with low bit-rate by playing the current video source play relative to the code check of the current video source play.
The first situation, when client judges that the ratio of the code check of above-mentioned current time network transfer speeds and the current video source play is less than or equal to the first predetermined threshold value, what obtain from client allly can meet pre-conditioned any video source (below any video source selected in the first situation being called the first video source) by selected code check displaying video source (can displaying video source set); Switched to by the above-mentioned current video source play of broadcasting and play any one first video source.Wherein, the first predetermined threshold value can set as the case may be, and optionally, this first predetermined threshold value is 1/4th, or this first predetermined threshold value is 1/5th.Pre-conditionedly be current time network transfer speeds and the ratio of code check in displaying video source can be greater than the first predetermined threshold value, and, this ratio is less than or equal to the second predetermined threshold value, wherein, this second predetermined threshold value can set as the case may be, and this second predetermined threshold value is greater than the first predetermined threshold value.
Optionally, in above process, what obtain from client allly can be greater than the first predetermined threshold value by the ratio of selected current time network transfer speeds and code check displaying video source, and be less than or equal to any one first video source of the second predetermined threshold value, be specially: calculate current time network transfer speeds with can displaying video source gather in can the ratio of code check in displaying video source, can displaying video source if having any one, the current time network transmission speed of its correspondence and this any one the code check in displaying video source can be greater than the first predetermined threshold value, and be less than or equal to the second predetermined threshold value, using this any one can displaying video source as the first video source.
In above process, first video source can be comprised in displaying video source, also multiple first video source can be comprised, when comprising multiple first video source, client can calculate successively current time network transfer speeds with can any one in displaying video set can the ratio of code check in displaying video source, the first pre-conditioned video source is met until obtain, namely no longer calculate, client plays this first video source by being directly switch into by the current video source play of broadcasting, adopt the method, client need not travel through as a rule can displaying video set, thus reduce the complexity of system-computed, improve the response speed of system.In addition, client can also calculate respectively current time network transfer speeds with can each can the ratio of code check in displaying video source in displaying video set, obtain and multiplely meet the first pre-conditioned video source, client any one first video source of random selecting from the plurality of first video source switches; Or the first video source that client obtains ratio maximum in above-mentioned multiple first video source switches, to ensure the fluency of video playback; Or the first video source that client obtains ratio minimum in above-mentioned multiple first video source switches, the highest to ensure the definition of video playback; Or, different weight coefficients is given from current time network transfer speeds by the code check of the first video source, client obtains the weight coefficient result of calculation (i.e. code check+b* current time network transfer speeds of weight calculation result=a* first video source corresponding to different first video source, a is the weight coefficient of the code check of the first video source, b is the weight coefficient of current time network transfer speeds), the first video source that client selectes this weight coefficient result of calculation maximum switches, thus ensures fluency and the definition of video playback simultaneously.
Adopt technique scheme, when the code check of current time network transfer speeds and the current video source play is less than or equal to the first predetermined threshold value, namely think that continuing to play this current video source play may occur playing slack problem, thus from selected the first optimum video source switching displaying video source, ensure that the fluency of video display process.
The second situation, when client judges that the ratio of the code check of above-mentioned current time network transfer speeds and the current video source play is greater than the second predetermined threshold value, what obtain from client allly can meet pre-conditioned any video source (below any video source selected in the second situation being called the second video source) by selected code check displaying video source (can displaying video source set); Switched to by this current video source play of broadcasting and play any one second video source.Wherein, the second predetermined threshold value can set as the case may be, and optionally, this first predetermined threshold value is 1/4th, or this first predetermined threshold value is 1/5th.Pre-conditionedly be current time network transfer speeds and the ratio of code check in displaying video source can be greater than the first predetermined threshold value, and, this ratio is less than or equal to the second predetermined threshold value, wherein, this second predetermined threshold value can set as the case may be, and this second predetermined threshold value is greater than the first predetermined threshold value.
Optionally, in above process, what obtain from client allly can be less than or equal to the second predetermined threshold value by the ratio of selected current time network transfer speeds and code check displaying video source, and be greater than any one second video source of the first predetermined threshold value, be specially: calculate current time network transfer speeds with can displaying video source gather in can the ratio of code check in displaying video source, can displaying video source if having any one, the current time network transmission speed of its correspondence and this any one the code check in displaying video source can be less than or equal to the second predetermined threshold value, and be greater than the first predetermined threshold value, using this any one can displaying video source as the second video source.
In above process, second video source can be comprised in displaying video source, also multiple second video source can be comprised, when comprising multiple second video source, client can calculate successively current time network transfer speeds with can any one in displaying video set can the ratio of code check in displaying video source, the second pre-conditioned video source is met until obtain, namely no longer calculate, client plays this second video source by being directly switch into by the current video source play of broadcasting, adopt the method, client need not travel through as a rule can displaying video set, thus reduce the complexity of system-computed, improve the response speed of system.In addition, client can also calculate respectively current time network transfer speeds with can each can the ratio of code check in displaying video source in displaying video set, obtain and multiplely meet the second pre-conditioned video source, client any one second video source of random selecting from the plurality of second video source switches; Or the second video source that client obtains ratio maximum in above-mentioned multiple second video source switches, to ensure the fluency of video playback; Or the second video source that client obtains ratio minimum in above-mentioned multiple second video source switches, the highest to ensure the definition of video playback; Or, different weight coefficients is given from current time network transfer speeds by the code check of the second video source, client obtains weight coefficient result of calculation corresponding to different second video source, the second video source that client selectes this weight coefficient result of calculation maximum switches, thus ensures fluency and the definition of video playback simultaneously.
Adopt technique scheme, when the code check of current time network transfer speeds and the current video source play is greater than the second predetermined threshold value, namely think that current time network quality is good, the code check of the current video source play can be improved further, from selected the second optimum video source switching displaying video source, the definition of video playback can be ensure that.
Introduce in detail the video source handoff procedure in point-to-point stream media system below in conjunction with concrete application scenarios.
Consult shown in Fig. 2, to the detailed process that video source switches be:
Step 200: client detects code check and the current time network transfer speeds of the local current video source play.
Step 210: client obtains each respectively can the code check in displaying video source, according to all can displaying video source composition can the set of displaying video source.
Step 220: client judges whether the ratio c of the code check of above-mentioned current time network transfer speeds and the above-mentioned current video source play is less than or equal to the first predetermined threshold value t1, or whether the ratio c of the code check of above-mentioned current time network transfer speeds and the above-mentioned current video source play is greater than the second predetermined threshold value t2.
Step 230: when the ratio of the code check of current time network transfer speeds and the above-mentioned current video source play is less than or equal to the first predetermined threshold value, from meeting the first pre-conditioned video source by selected code check the set of displaying video source, and switch to broadcasting first video source by the above-mentioned current video source play of broadcasting; Otherwise, return step 200, proceed to detect.
Step 240: when the ratio of the code check of current time network transfer speeds and the above-mentioned current video source play is greater than the second predetermined threshold value, from meeting the second pre-conditioned video source by selected code check the set of displaying video source, and switch to broadcasting second video source by the above-mentioned current video source play of broadcasting; Otherwise, return step 200, proceed to detect.
Based on technique scheme, consult shown in Fig. 3, a kind of video source switching device shifter is also provided in the embodiment of the present invention, comprises detecting unit 30, acquiring unit 31, switch unit 32, wherein:
Detecting unit 30, for detecting code check and the current time network transfer speeds of the local current video source play;
Acquiring unit 31, can the code check in displaying video source for obtaining each respectively;
Switch unit 32, when ratio for the code check judging current time network transfer speeds and the current video source play reaches predetermined threshold value, allly can meet pre-conditioned any video source by selected code check displaying video source from what obtain, the above-mentioned current video source play of broadcasting be switched to and plays above-mentioned selected any video source.
In sum, in the embodiment of the present invention, client detects code check and the current time network transfer speeds of the local current video source play; Client obtains each respectively can the code check in displaying video source; When client judges that the ratio of the code check of above-mentioned current time network transfer speeds and the above-mentioned current video source play reaches predetermined threshold value, what obtain from client allly can meet pre-conditioned any video source by selected code check displaying video source, is switched to play above-mentioned code check and meet pre-conditioned video source by the above-mentioned current video source play of broadcasting.Adopt technical solution of the present invention, using the ratio of the code check of current time network transfer speeds and the current video source play as the standard whether switched video source, and the code check in displaying video source can select the target video source finally switched to according to client, thus on the basis ensureing video smooth playing, avoid video source switching action blindly, and then reduce system burden, effectively improve network performance.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the embodiment of the present invention and not depart from the spirit and scope of the embodiment of the present invention.Like this, if these amendments of the embodiment of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a video source changing method, is applied in point-to-point stream media system, it is characterized in that, comprising:
Client detects code check and the current time network transfer speeds of the local current video source play; And
Described client obtains each respectively can the code check in displaying video source;
When described client judges that the ratio of the code check of described current time network transfer speeds and the described current video source play reaches predetermined threshold value, what obtain from described client allly can meet pre-conditioned any video source by selected code check displaying video source, switches to play selected described any video source by playing the described current video source play.
2. the method for claim 1, is characterized in that, described client judges that the ratio of the code check of described current time network transfer speeds and the described current video source play reaches predetermined threshold value, specifically comprises:
Described client judges that the ratio of the source code rate of described current time network transfer speeds and the described current video play is less than or equal to the first predetermined threshold value.
3. method as claimed in claim 2, is characterized in that, what obtain from described client allly can meet pre-conditioned any video source by selected described code check displaying video source, specifically comprises:
What obtain from described client allly can be greater than the first predetermined threshold value by the ratio of selected described current time network transfer speeds and code check displaying video source, and is less than or equal to any video source of the second predetermined threshold value; Wherein, the first predetermined threshold value is less than the second predetermined threshold value.
4. the method for claim 1, is characterized in that, described client judges that the ratio of the code check of described current time network transfer speeds and the described current video source play reaches predetermined threshold value, specifically comprises:
Described client judges that the ratio of the code check of described current time network transfer speeds and the described current video source play is greater than the second predetermined threshold value.
5. method as claimed in claim 4, is characterized in that, what obtain from described client allly can meet pre-conditioned any video source by selected described code check displaying video source, specifically comprises:
What obtain from described client allly can be less than or equal to the second predetermined threshold value by the ratio of selected described current time network transfer speeds and code check displaying video source, and is greater than any video source of the first predetermined threshold value; Wherein, the first predetermined threshold value is less than the second predetermined threshold value.
6. a video source switching device shifter, is applied in point-to-point stream media system, it is characterized in that, comprising:
Detecting unit, for detecting code check and the current time network transfer speeds of the local current video source play;
Acquiring unit, can the code check in displaying video source for obtaining each respectively;
Switch unit, when ratio for the code check judging described current time network transfer speeds and the described current video source play reaches predetermined threshold value, allly can meet pre-conditioned any video source by selected code check displaying video source from what obtain, switch to play selected described any video source by playing the described current video source play.
7. device as claimed in claim 6, is characterized in that, described switch unit, specifically for:
Judge that the ratio of the source code rate of described current time network transfer speeds and the described current video play is less than or equal to the first predetermined threshold value.
8. device as claimed in claim 7, is characterized in that, described switch unit, specifically for:
Allly can be greater than the first predetermined threshold value by the ratio of selected described current time network transfer speeds and code check displaying video source from what obtain, and be less than or equal to any video source of the second predetermined threshold value; Wherein, the first predetermined threshold value is less than the second predetermined threshold value.
9. device as claimed in claim 6, is characterized in that, described switch unit, specifically for:
Judge that the ratio of the code check of described current time network transfer speeds and the described current video source play is greater than the second predetermined threshold value.
10. device as claimed in claim 9, is characterized in that, described switch unit, specifically for:
Allly can be less than or equal to the second predetermined threshold value by the ratio of selected described current time network transfer speeds and code check displaying video source from what obtain, and be greater than any video source of the first predetermined threshold value; Wherein, the first predetermined threshold value is less than the second predetermined threshold value.
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| CN109788357A (en) * | 2018-11-07 | 2019-05-21 | 合肥杰发科技有限公司 | A kind of method and device playing media file |
| CN109889303A (en) * | 2018-12-28 | 2019-06-14 | 努比亚技术有限公司 | Video play mode switching method, device and computer readable storage medium |
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