CN105144711B - A kind of method and relevant device for assessing video quality - Google Patents

A kind of method and relevant device for assessing video quality Download PDF

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Publication number
CN105144711B
CN105144711B CN201480000356.3A CN201480000356A CN105144711B CN 105144711 B CN105144711 B CN 105144711B CN 201480000356 A CN201480000356 A CN 201480000356A CN 105144711 B CN105144711 B CN 105144711B
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video flowing
video
information
quality
segmentation
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CN105144711A (en
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韩广林
万蕾
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies

Abstract

A kind of method and relevant device for assessing video quality, wherein, methods described includes：The quality information that the content obtaining video flowing that server is segmented according to video flowing is segmented；The quality information that the server is segmented according to the video flowing generates media description information；The media description information is sent to video playback client by the server, so that the video playback client generates the quality information of the first video flowing according to the media description information and the video flowing got segmentation.Methods described and equipment can be in the case where not needing transmission impairment video data to server, the assessment of inexpensive realization to video quality.

Description

A kind of method and relevant device for assessing video quality
Technical field
The present invention relates to communication technical field, more particularly to a kind of method and relevant device for assessing video quality.
Background technology
With the development of mobile Internet, with the movement for representative such as mobile TV, mobile video telephone, video short message Video traffic is increasingly liked by user, and people have huge consumption for extensive and easily accessed video content Demand.Video traffic will be quickly become the important channel that operator attracts clients as can be seen here, therefore to the assessment of video quality Also it will become more and more important.
In the prior art, original video data is sent to video playback client by server with specific code check；It is described Video playback client receives damage video data corresponding with the original video data with the specific code check, and will be described Damage video data sends back the server, so that the server is according to the original video data and the damage video Data estimation goes out the video quality that video playback client is watched.But the damage video data is sent back into the service The step of device, will bring larger expense to network bandwidth transmission, make the added cost of video quality assessment, be unfavorable for regarding Frequency quality is estimated.
The content of the invention
The embodiment of the present invention provides a kind of method and relevant device for assessing video quality, can need not transmit damage Hinder video data in the case of server, the assessment of inexpensive realization to video quality.
First aspect present invention provides a kind of method for assessing video quality, it may include：
The quality information that the content obtaining video flowing that server is segmented according to video flowing is segmented；
The quality information that the server is segmented according to the video flowing generates media description information；
The media description information is sent to video playback client by the server, so that the video playback client Hold the quality information that the first video flowing is generated according to the media description information and the video flowing got segmentation；
Wherein, what the video flowing segmentation that first video flowing is got by the video playback client was constituted regards Frequency flows.
Based in a first aspect, in the first feasible embodiment of first aspect, in the server according to video Before the step of quality information of the content obtaining video flowing segmentation of flow point section, in addition to：
The original video stream got is encoded to the second video flowing of at least one code check by the server；
Second video flowing of at least one code check is divided into the segmentation of at least two video flowings by the server.
The first feasible embodiment based on first aspect, in second of feasible embodiment of first aspect In, the quality information that the server is segmented according to the video flowing generates media description information, including：
The server selects one of which video flowing to be used as reference in the second video flowing of at least one code check Video flowing；
The quality that the server is segmented according to video flowing corresponding with the second video flowing of at least one code check is believed Breath and the quality information generation media description information of video flowing corresponding with reference video stream segmentation.
Second based on first aspect feasible embodiment, in the third feasible embodiment of first aspect In, the media description information includes：
The quality information of video flowing segmentation corresponding with the second video flowing of at least one code check；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and with the ginseng Examine the quality information of the corresponding video flowing segmentation of video flowing；Or,
The relative mass information of video flowing segmentation corresponding with the second video flowing of at least one code check, it is described relative Quality information be by video flowing corresponding with the second video flowing of at least one code check be segmented quality information and with institute State the information that the quality information of the corresponding video flowing segmentation of reference video stream is generated；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and for identifying The identification information of the quality information of video flowing segmentation corresponding with the reference video stream.
Second of the first feasible embodiment or first aspect based on first aspect or first aspect is feasible The third feasible embodiment of embodiment or first aspect, in the 4th kind of feasible embodiment of first aspect, Also include：
The server receives the quality information for first video flowing that the video playback client is sent.
The third feasible embodiment based on first aspect, in the 5th kind of feasible embodiment of first aspect In, in addition to：
The server receives the segmentation quality information that the video playback client is sent, the segmentation quality information bag Accessed by quality information, the video playback client containing the video flowing segmentation accessed by the video playback client Video flowing segmentation relative mass information, for identify accessed by the video playback client video flowing segmentation mark Know at least one of information；
The server generates first video flowing according to the segmentation quality information and default quality evaluation formula Quality information.
Second aspect of the present invention provides a kind of method for assessing video quality, it may include：
The media description information that video playback client the reception server is sent, the media description information is by the clothes The information that the quality information that business device is segmented according to video flowing is generated；
The video playback client is according to the media description information and the video flowing got segmentation generation first The quality information of video flowing；
Wherein, what the video flowing segmentation that first video flowing is got by the video playback client was constituted regards Frequency flows.
Based on second aspect, in the first feasible embodiment of second aspect, the video flowing segmentation is by institute Obtained by the second video flowing for stating at least one code check of server segmentation；
Second video flowing of at least one code check is to be compiled the original video stream got by the server Video flowing obtained by code.
The first feasible embodiment based on second aspect, in second of feasible embodiment of second aspect In, when the media description information be the quality information that is segmented by the server according to video flowing and with reference video stream pair During the information that the quality information for the video flowing segmentation answered is generated, the media description information is specifically included：
The quality information of video flowing segmentation corresponding with the second video flowing of at least one code check；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and with the ginseng Examine the quality information of the corresponding video flowing segmentation of video flowing；Or,
The relative mass information of video flowing segmentation corresponding with the second video flowing of at least one code check, it is described relative Quality information be by video flowing corresponding with the second video flowing of at least one code check be segmented quality information and with institute State the information that the quality information of the corresponding video flowing segmentation of reference video stream is generated；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and for identifying The identification information of the quality information of video flowing segmentation corresponding with the reference video stream；
Wherein, the reference video stream is selected in second video flowing of the server at least one code check The video flowing gone out.
Second of the first feasible embodiment or second aspect based on second aspect or second aspect is feasible Embodiment, in the third feasible embodiment of second aspect, the video playback client is retouched according to the media The video flowing stated information and got is segmented the quality information for generating the first video flowing, including：
The video playback client is segmented according to the video flowing got, and correspondence is extracted from the media description information Quality information；
The video playback client is regarded according to the quality information extracted and default quality evaluation formula generation first The quality information of frequency stream.
Second based on second aspect feasible embodiment, in the 4th kind of feasible embodiment of second aspect In, the video playback client is according to the media description information and the video flowing got segmentation the first video flowing of generation Quality information, including：
The video playback client is segmented according to the video flowing got, is extracted or is counted from the media description information Calculate corresponding relative mass information；
The video playback client is according to the relative mass information and default quality evaluation formula extracted or calculated Generate the quality information of the first video flowing.
Second of the first feasible embodiment or second aspect based on second aspect or second aspect is feasible The third feasible embodiment of embodiment or second aspect or the 4th of second aspect the kind of feasible embodiment, In 5th kind of feasible embodiment of two aspects, in addition to：
The video playback client sends the quality information of first video flowing to the server.
The 4th kind of feasible embodiment based on second aspect, in the 6th kind of feasible embodiment of second aspect In, in addition to：
The video playback client sends segmentation quality information to the server, so that the server is according to described It is segmented quality information and default quality evaluation formula generates the quality information of first video flowing；
Wherein, the segmentation quality information includes the quality of the video flowing segmentation accessed by the video playback client The relative mass information of video flowing segmentation accessed by information, the video playback client, broadcast for identifying the video Put at least one of identification information that the video flowing accessed by client is segmented.
Third aspect present invention provides a kind of method for assessing video quality, it may include：
Obtain and the video flowing corresponding quality information of segmentation or relative mass information；
Based on default quality evaluation formula, and according to the video matter of quality information or relative mass information calculating video flowing Amount；
The video flowing is segmented the video flowing constituted by video flowing.
Based on the third aspect, in the first feasible embodiment of the third aspect, the quality information at least includes The video quality of video flowing segmentation or the video quality grade of video flowing segmentation, the video quality grade of video flowing segmentation is What the video quality being segmented according to the video flowing was divided；
The relative mass information includes the relative video quality of video flowing segmentation or the relative video matter of video flowing segmentation Grade is measured, the relative video credit rating of the video flowing segmentation is that the relative video quality being segmented according to the video flowing is carried out Divide.
Based on the third aspect, in second of feasible embodiment of the third aspect, the default quality evaluation is public Calculating parameter in formula includes：
At least one of quality information average value, quality information variance, quality information change frequency；Or,
At least one of relative mass information average value, relative mass information variance, relative mass information change frequency.
Second based on the third aspect feasible embodiment, in the third feasible embodiment of the third aspect In, the quality information change frequency or the relative mass information change frequency include：According to video flowing segmentation in matter The frequency that change frequency and the corresponding reproduction time of the video flowing in amount are calculated；Or,
The quality information change frequency or the relative mass information change frequency include：According to many in the video flowing It is right respectively with multiple periods in the video flowing that the change frequency that video flowing in the individual period is segmented in quality is calculated The frequency answered；Or,
The quality information change frequency or the relative mass information change frequency include：According to video flowing correspondence Reproduction time or the video flowing in multiple periods the increased quality frequency and/or Quality Down frequency that calculate；Or,
The quality information change frequency or the relative mass information change frequency include：The video flowing segmentation is in institute State the change frequency of quality in multiple periods in the corresponding reproduction time of video flowing or the video flowing；Or,
The quality information change frequency or the relative mass information change frequency include：The video flowing segmentation is in institute State the lifting number of times of quality and/or the decline of quality in multiple periods in the corresponding reproduction time of video flowing or the video flowing Number of times.
The third feasible embodiment based on the third aspect, in the 4th kind of feasible embodiment of the third aspect In, the quality information change frequency or the relative mass information change frequency are according to multiple periods in the video flowing In the change frequency average value that is calculated, change frequency standard deviation, change frequency maximum, change frequency minimum value at least It is a kind of；
Wherein, the change frequency is to be segmented each change in quality according to the video flowing to count what is obtained, The change being either segmented according to the video flowing in quality counts what is obtained when exceeding change threshold.
Second of the first feasible embodiment or the third aspect based on the third aspect or the third aspect is feasible The third feasible embodiment of embodiment or the third aspect or the 4th of the third aspect the kind of feasible embodiment, In 5th kind of feasible embodiment of three aspects, the quality information is the letter that the content obtaining being segmented according to video flowing is arrived Breath；
The relative mass information is according to the quality information and video flowing corresponding with reference video stream segmentation What quality information was generated；
Wherein, the reference video stream is selected in the video flowing of at least one code check.
Fourth aspect present invention provides a kind of server, it may include：
Acquisition module, the quality information that the content obtaining video flowing for being segmented according to video flowing is segmented；
First generation module, the quality information for being segmented according to the video flowing generates media description information；
Description information sending module, for the media description information to be sent into video playback client, so that described Video playback client generates the quality of the first video flowing according to the media description information and the video flowing got segmentation Information；
Wherein, what the video flowing segmentation that first video flowing is got by the video playback client was constituted regards Frequency flows.
Based on fourth aspect, in the first feasible embodiment of fourth aspect, in addition to：
Coding module, the second video flowing for the original video stream got to be encoded to at least one code check；
Split module, for the second video flowing of at least one code check to be divided into the segmentation of at least two video flowings.
The first feasible embodiment based on fourth aspect, in second of feasible embodiment of fourth aspect In, first generation module includes：
With reference to selecting unit, for selecting one of which video flowing to make in the second video flowing of at least one code check For reference video stream；
Information generating unit, for what is be segmented according to video flowing corresponding with the second video flowing of at least one code check Quality information and the quality information generation media description information of video flowing corresponding with reference video stream segmentation.
Second based on fourth aspect feasible embodiment, in the third feasible embodiment of fourth aspect In, the media description information that described information generation unit is generated includes：
The quality information of video flowing segmentation corresponding with the second video flowing of at least one code check；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and with the ginseng Examine the quality information of the corresponding video flowing segmentation of video flowing；Or,
The relative mass information of video flowing segmentation corresponding with the second video flowing of at least one code check, it is described relative Quality information be by video flowing corresponding with the second video flowing of at least one code check be segmented quality information and with institute State the information that the quality information of the corresponding video flowing segmentation of reference video stream is generated；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and for identifying The identification information of the quality information of video flowing segmentation corresponding with the reference video stream.
Second of the first feasible embodiment or fourth aspect based on fourth aspect or fourth aspect is feasible The third feasible embodiment of embodiment or fourth aspect, in the 4th kind of feasible embodiment of fourth aspect, Also include：
Play quality receiving module, the quality for receiving first video flowing that the video playback client is sent Information.
The third feasible embodiment based on fourth aspect, in the 5th kind of feasible embodiment of fourth aspect In, in addition to：
Quality reception module is segmented, for receiving the segmentation quality information that the video playback client is sent, described point Quality information of the section quality information comprising the video flowing segmentation accessed by the video playback client, video playback visitor Accessed by the end of family video flowing segmentation relative mass information, for identifying regarding accessed by the video playback client At least one of identification information of frequency flow point section；
Second generation module, for according to the segmentation quality information and default quality evaluation formula generation described first The quality information of video flowing.
Fifth aspect present invention provides a kind of video playback client, it may include：
Description information receiving module, for the media description information of the reception server transmission, the media description information is The information that the quality information being segmented by the server according to video flowing is generated；
Quality information generation module, for according to the media description information and the video flowing got segmentation generation the The quality information of one video flowing；
Wherein, what the video flowing segmentation that first video flowing is got by the video playback client was constituted regards Frequency flows.
Based on the 5th aspect, in the first feasible implementation of the 5th aspect, the description information receiving module In video flowing segmentation be the second video flowing that at least one code check is split by the server obtained by；
Second video flowing of at least one code check is to be compiled the original video stream got by the server Video flowing obtained by code.
Based on the first feasible embodiment of the 5th aspect, in second of feasible embodiment of the 5th aspect In, when the media description information received by the description information receiving module is according to video flow point by the server During the information that the quality information of section and the quality information of video flowing corresponding with reference video stream segmentation are generated, the media Description information is specifically included：
The quality information of video flowing segmentation corresponding with the second video flowing of at least one code check；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and with the ginseng Examine the quality information of the corresponding video flowing segmentation of video flowing；Or,
The relative mass information of video flowing segmentation corresponding with the second video flowing of at least one code check, it is described relative Quality information be by video flowing corresponding with the second video flowing of at least one code check be segmented quality information and with institute State the information that the quality information of the corresponding video flowing segmentation of reference video stream is generated；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and for identifying The identification information of the quality information of video flowing segmentation corresponding with the reference video stream；
Wherein, the reference video stream is selected in second video flowing of the server at least one code check The video flowing gone out.
Second of the first feasible embodiment or the 5th aspect based on the 5th aspect or the 5th aspect is feasible Embodiment, in the third feasible embodiment of the 5th aspect, the quality information generation module includes：
First extraction unit, for being segmented according to each video flowing played, is extracted from the media description information Corresponding quality information；
First mass generation unit, for according to quality information and default quality evaluation the formula generation first extracted The quality information of video flowing.
Based on second of feasible embodiment of the 5th aspect, in the 4th kind of feasible embodiment of the 5th aspect In, the quality information generation module includes：
Second extraction unit, for according to the video flowing segmentation got, extracting or counting from the media description information Calculate corresponding relative mass information；
Second mass generation unit, for public according to the relative mass information extracted or calculated and default quality evaluation Formula generates the quality information of the first video flowing.
Second of the first feasible embodiment or the 5th aspect based on the 5th aspect or the 5th aspect is feasible The 4th kind of feasible embodiment of the third feasible embodiment or the 5th aspect of embodiment or the 5th aspect, the In 5th kind of feasible embodiment of five aspects, in addition to：
Play quality sending module, for sending the quality information of first video flowing to the server.
Based on the 4th kind of feasible embodiment of the 5th aspect, in the 6th kind of feasible embodiment of the 5th aspect In, in addition to：
Be segmented quality sending module, for sending segmentation quality information to the server so that the server according to The segmentation quality information and default quality evaluation formula generate the quality information of first video flowing；
Wherein, the segmentation quality information includes the quality of the video flowing segmentation accessed by the video playback client The relative mass information of video flowing segmentation accessed by information, the video playback client, broadcast for identifying the video Put at least one of identification information that the video flowing accessed by client is segmented.
Sixth aspect present invention provides a kind of assessment equipment, it may include：
Data obtaining module, for obtaining and the video flowing corresponding quality information of segmentation or relative mass information；
Quality Calculation Module, for based on default quality evaluation formula, and according to quality information or relative mass information Calculate the video quality of video flowing；
The video flowing is segmented the video flowing constituted by video flowing.
Based on the 6th aspect, in the first feasible embodiment of the 6th aspect, in described information acquisition module The quality information at least includes the video quality of video flowing segmentation or the video quality grade of video flowing segmentation, the video flowing The video quality grade of segmentation is that the video quality being segmented according to the video flowing is divided；
The relative mass information in described information acquisition module includes the relative video quality of video flowing segmentation or regarded The relative video credit rating of frequency flow point section, the relative video credit rating of the video flowing segmentation is according to the video flow point What the relative video quality of section was divided.
Based on the 6th aspect, in second of feasible embodiment of the 6th aspect, in the Quality Calculation Module Calculating parameter in the default quality evaluation formula includes：
At least one of quality information average value, quality information variance, quality information change frequency；Or,
At least one of relative mass information average value, relative mass information variance, relative mass information change frequency.
Based on second of feasible embodiment of the 6th aspect, in the third feasible embodiment of the 6th aspect In, the quality information change frequency or the relative mass information change frequency include：According to video flowing segmentation in matter The frequency that change frequency and the corresponding reproduction time of the video flowing in amount are calculated；Or,
The quality information change frequency or the relative mass information change frequency include：According to many in the video flowing It is right respectively with multiple periods in the video flowing that the change frequency that video flowing in the individual period is segmented in quality is calculated The frequency answered；Or,
The quality information change frequency or the relative mass information change frequency include：According to video flowing correspondence Reproduction time or the video flowing in multiple periods the increased quality frequency and/or Quality Down frequency that calculate；Or,
The quality information change frequency or the relative mass information change frequency include：The video flowing segmentation is in institute State the change frequency of quality in multiple periods in the corresponding reproduction time of video flowing or the video flowing；Or,
The quality information change frequency or the relative mass information change frequency include：The video flowing segmentation is in institute State the lifting number of times of quality and/or the decline of quality in multiple periods in the corresponding reproduction time of video flowing or the video flowing Number of times.
Based on the third feasible embodiment of the 6th aspect, in the 4th kind of feasible embodiment of the 6th aspect In, the quality information change frequency or the relative mass information change frequency are according to multiple periods in the video flowing In the change frequency average value that is calculated, change frequency standard deviation, change frequency maximum, change frequency minimum value at least It is a kind of；
Wherein, the change frequency is to be segmented each change in quality according to the video flowing to count what is obtained, The change being either segmented according to the video flowing in quality counts what is obtained when exceeding change threshold.
Second of the first feasible embodiment or the 6th aspect based on the 6th aspect or the 6th aspect is feasible The 4th kind of feasible embodiment of the third feasible embodiment or the 6th aspect of embodiment or the 6th aspect, the In 5th kind of feasible embodiment of six aspects, the quality information is the letter that the content obtaining being segmented according to video flowing is arrived Breath；
The relative mass information is according to the quality information and video flowing corresponding with reference video stream segmentation What quality information was generated；
Wherein, the reference video stream is selected in the video flowing of at least one code check.
Seventh aspect present invention provides a kind of computer-readable storage medium, and the computer-readable storage medium can be stored with journey Sequence, all steps provided when the program is performed including above-mentioned first aspect.
Eighth aspect present invention provides a kind of computer-readable storage medium, and the computer-readable storage medium can be stored with journey Sequence, all steps provided when the program is performed including above-mentioned second aspect.
Ninth aspect present invention provides a kind of computer-readable storage medium, and the computer-readable storage medium can be stored with journey Sequence, all steps provided when the program is performed including the above-mentioned third aspect.
Tenth aspect present invention provides a kind of server, it may include：Processor, communication interface and memory, wherein,
The communication interface, for being communicated with video playback client；
The memory is used for storage program；
The processor is used to perform described program, to realize
The quality information that the content obtaining video flowing being segmented according to video flowing is segmented；
The quality information being segmented according to the video flowing generates media description information；
The media description information is sent to video playback client, so that the video playback client is according to described The quality information of media description information and video flowing segmentation the first video flowing of generation got；
Wherein, what the video flowing segmentation that first video flowing is got by the video playback client was constituted regards Frequency flows.
Based on the tenth aspect, in the first feasible embodiment of the tenth aspect, the processor is additionally operable to：
The original video stream got is encoded to the second video flowing of at least one code check；
Second video flowing of at least one code check is divided into the segmentation of at least two video flowings.
Based on the first feasible embodiment of the tenth aspect, in second of feasible embodiment of the tenth aspect In, the processor specifically for：
One of which video flowing is selected to be used as reference video stream in the second video flowing of at least one code check；
According to video flowing corresponding with the second video flowing of at least one code check be segmented quality information and with institute State the quality information generation media description information of the corresponding video flowing segmentation of reference video stream.
Based on second of feasible embodiment of the tenth aspect, in the third feasible embodiment of the tenth aspect In, the media description information includes：
The quality information of video flowing segmentation corresponding with the second video flowing of at least one code check；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and with the ginseng Examine the quality information of the corresponding video flowing segmentation of video flowing；Or,
The relative mass information of video flowing segmentation corresponding with the second video flowing of at least one code check, it is described relative Quality information be by video flowing corresponding with the second video flowing of at least one code check be segmented quality information and with institute State the information that the quality information of the corresponding video flowing segmentation of reference video stream is generated；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and for identifying The identification information of the quality information of video flowing segmentation corresponding with the reference video stream.
Second of the first feasible embodiment or the tenth aspect based on the tenth aspect or the tenth aspect is feasible The third feasible embodiment of embodiment or the tenth aspect, in the 4th kind of feasible embodiment of the tenth aspect, The processor is additionally operable to：
Receive the quality information for first video flowing that the video playback client is sent.
Based on the third feasible embodiment of the tenth aspect, in the 5th kind of feasible embodiment of the tenth aspect In, the processor is additionally operable to：
The segmentation quality information that the video playback client is sent is received, the segmentation quality information includes the video Quality information, the video flow point accessed by the video playback client of video flowing segmentation accessed by client end of playing back In the relative mass information of section, the identification information for identifying the video flowing segmentation accessed by the video playback client It is at least one；
The quality information of first video flowing is generated according to the segmentation quality information and default quality evaluation formula.
Tenth one side of the invention provides a kind of video playback client, it may include：Processor, communication interface and storage Device, wherein,
The communication interface, for being communicated with server；
The memory is used for storage program；
The processor is used to perform described program, to realize
The media description information that the reception server is sent, the media description information is according to video flowing by the server The information that the quality information of segmentation is generated；
According to the media description information and the quality information of the video flowing got segmentation the first video flowing of generation；
Wherein, what the video flowing segmentation that first video flowing is got by the video playback client was constituted regards Frequency flows.
Based on the tenth on the one hand, in the first feasible embodiment of the tenth one side, the video flowing segmentation is Obtained by the second video flowing for splitting at least one code check by the server；
Second video flowing of at least one code check is to be compiled the original video stream got by the server Video flowing obtained by code.
Based on the first feasible embodiment of the tenth one side, in second of feasible embodiment party of the tenth one side In formula, when the media description information is the quality information and and reference video stream that are segmented by the server according to video flowing During the information that the quality information of corresponding video flowing segmentation is generated, the media description information is specifically included：
The quality information of video flowing segmentation corresponding with the second video flowing of at least one code check；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and with the ginseng Examine the quality information of the corresponding video flowing segmentation of video flowing；Or,
The relative mass information of video flowing segmentation corresponding with the second video flowing of at least one code check, it is described relative Quality information be by video flowing corresponding with the second video flowing of at least one code check be segmented quality information and with institute State the information that the quality information of the corresponding video flowing segmentation of reference video stream is generated；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and for identifying The identification information of the quality information of video flowing segmentation corresponding with the reference video stream；
Wherein, the reference video stream is selected in second video flowing of the server at least one code check The video flowing gone out.
Second of the first feasible embodiment or the tenth one side based on the tenth one side or eighth aspect can Capable embodiment, in the third feasible embodiment of the tenth one side, the processor specifically for：
According to the video flowing segmentation got, corresponding quality information is extracted from the media description information；
The quality information of the first video flowing is generated according to the quality information extracted and default quality evaluation formula.
Second of feasible embodiment based on the tenth one side, in the 4th kind of feasible embodiment party of the tenth one side In formula, the processor specifically for：
According to the video flowing segmentation got, corresponding relative mass is extracted or calculated from the media description information Information；
The matter of the first video flowing is generated according to the relative mass information extracted or calculated and default quality evaluation formula Measure information.
Second of the first feasible embodiment or the tenth one side based on the tenth one side or the tenth one side 4th kind of feasible reality of feasible embodiment or the third feasible embodiment of the tenth one side or the tenth one side Mode is applied, in the 5th kind of feasible embodiment of the tenth one side, the processor is additionally operable to：
The quality information of first video flowing is sent to the server.
The 4th kind of feasible embodiment based on the tenth one side, in the 6th kind of feasible embodiment party of the tenth one side In formula, the processor is additionally operable to：
Segmentation quality information is sent to the server, so that the server is according to the segmentation quality information and presets Quality evaluation formula generate the quality information of first video flowing；
Wherein, the segmentation quality information includes the quality of the video flowing segmentation accessed by the video playback client The relative mass information of video flowing segmentation accessed by information, the video playback client, broadcast for identifying the video Put at least one of identification information that the video flowing accessed by client is segmented.
The twelfth aspect of the present invention provides a kind of assessment equipment, it may include：Processor and memory, wherein,
The memory is used for storage program；
The processor is used to perform described program, to realize
Obtain and the video flowing corresponding quality information of segmentation or relative mass information；
Based on default quality evaluation formula, and according to the video matter of quality information or relative mass information calculating video flowing Amount；
The video flowing is segmented the video flowing constituted by video flowing.
Based on the 12nd aspect, in the first feasible embodiment of the 12nd aspect, the quality information is at least The video quality grade for video quality or the video flowing segmentation being segmented including video flowing, video quality of the video flowing segmentation etc. Level is that the video quality being segmented according to the video flowing is divided；
The relative mass information includes the relative video quality of video flowing segmentation or the relative video matter of video flowing segmentation Grade is measured, the relative video credit rating of the video flowing segmentation is that the relative video quality being segmented according to the video flowing is carried out Divide.
Based on the 12nd aspect, in second of feasible embodiment of the 12nd aspect, the default quality is commented The calculating parameter estimated in formula includes：
At least one of quality information average value, quality information variance, quality information change frequency；Or,
At least one of relative mass information average value, relative mass information variance, relative mass information change frequency.
Based on second of feasible embodiment of the 12nd aspect, in the third feasible embodiment party of the 12nd aspect In formula, the quality information change frequency or the relative mass information change frequency include：Existed according to video flowing segmentation The frequency that change frequency and the corresponding reproduction time of the video flowing in quality are calculated；Or,
The quality information change frequency or the relative mass information change frequency include：According to many in the video flowing It is right respectively with multiple periods in the video flowing that the change frequency that video flowing in the individual period is segmented in quality is calculated The frequency answered；Or,
The quality information change frequency or the relative mass information change frequency include：According to video flowing correspondence Reproduction time or the video flowing in multiple periods the increased quality frequency and/or Quality Down frequency that calculate；Or,
The quality information change frequency or the relative mass information change frequency include：The video flowing segmentation is in institute State the change frequency of quality in multiple periods in the corresponding reproduction time of video flowing or the video flowing；Or,
The quality information change frequency or the relative mass information change frequency include：The video flowing segmentation is in institute State the lifting number of times of quality and/or the decline of quality in multiple periods in the corresponding reproduction time of video flowing or the video flowing Number of times.
Based on the third feasible embodiment of the 12nd aspect, in the 4th kind of feasible embodiment party of the 12nd aspect In formula, the quality information change frequency or the relative mass information change frequency are according to multiple times in the video flowing Change frequency average value that section is calculated, change frequency standard deviation, change frequency maximum, in change frequency minimum value extremely Few one kind；
Wherein, the change frequency is to be segmented each change in quality according to the video flowing to count what is obtained, The change being either segmented according to the video flowing in quality counts what is obtained when exceeding change threshold.
Second of the first feasible embodiment or the 12nd aspect based on the 12nd aspect or the 12nd aspect The 4th kind of feasible reality of the third feasible embodiment or the 12nd aspect of feasible embodiment or the 12nd aspect Mode is applied, in the 5th kind of feasible embodiment of the 12nd aspect, in the quality information is segmented according to video flowing Hold the information got；
The relative mass information is according to the quality information and video flowing corresponding with reference video stream segmentation What quality information was generated；
Wherein, the reference video stream is selected in the video flowing of at least one code check.
Therefore, the embodiment of the present invention by media description information by being sent to video playback client so that video The quality information that client end of playing back can be segmented according to video flowing in media description information estimates video playback client and broadcast Put the quality of video, thus do not need transmission impairment video data to server in the case of can low cost realization to regarding The assessment of frequency quality, makes video quality assessment process become quick, effective.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings Obtain other accompanying drawings.
Fig. 1 is a kind of schematic flow sheet for the method for assessing video quality provided in an embodiment of the present invention；
Fig. 2 is the schematic flow sheet of another method for assessing video quality provided in an embodiment of the present invention；
Fig. 3 is the schematic flow sheet of the method for another assessment video quality provided in an embodiment of the present invention；
Fig. 4 is the schematic flow sheet of the method for another assessment video quality provided in an embodiment of the present invention；
Fig. 5 is the schematic flow sheet of the method for another assessment video quality provided in an embodiment of the present invention；
Fig. 6 is a kind of structural representation for the system for assessing video quality provided in an embodiment of the present invention；
Fig. 7 is a kind of structural representation of server provided in an embodiment of the present invention；
Fig. 8 is the structural representation of another server provided in an embodiment of the present invention；
Fig. 9 is a kind of structural representation of first generation module provided in an embodiment of the present invention；
Figure 10 is a kind of structural representation of video playback client provided in an embodiment of the present invention；
Figure 11 is the structural representation of another video playback client provided in an embodiment of the present invention；
Figure 12 is a kind of structural representation of quality information generation module provided in an embodiment of the present invention；
Figure 13 is a kind of structural representation of assessment equipment provided in an embodiment of the present invention；
Figure 14 is the structural representation of another server provided in an embodiment of the present invention；
Figure 15 is the structural representation of another video playback client provided in an embodiment of the present invention；
Figure 16 is the structural representation of another assessment equipment provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.
Fig. 1 is referred to, is a kind of schematic flow sheet of method for assessing video quality provided in an embodiment of the present invention, it is described Method includes：
S101, the quality information that the content obtaining video flowing that server is segmented according to video flowing is segmented；
Specifically, the quality information for the content obtaining video flowing segmentation that server can be segmented according to video flowing.And herein Before, the original video stream got is encoded to the second video flowing of at least one code check by the server, then by described in extremely A kind of second video flowing of few code check is divided into the segmentation of at least two video flowings, wherein, the second video flowing of every kind of code check is regarded Frequency content is, the video quality mutual not phase of second video flowing of different code checks identical with the video content of the original video stream Together.
The server can (Dynamic Adaptive Streaming over HTTP, be based on for DASH servers HTTP dynamic self-adapting Streaming Media), i.e., described server can provide DASH video traffics, and the DASH video traffics can be by One complete original video stream is encoded into the second video flowing of several different code checks, and the second video of each code check is flowed into Row segmentation is segmented with obtaining video flowing, wherein, the video playback client of request DASH video traffics can be according to current channel The video flowing segmentation of conditional request phase code rate.Wherein, the quality information of the video flowing segmentation can pass through PSNR (Peak Signal-to-Noise Ratio, Y-PSNR) or SSIM (Structural Similarity Index Measurement, the measure of structural similarity index) two methods acquire, i.e., and described quality information can be PSNR letters Breath or SSIM information.
For example, the server gets some original video stream, and the original video stream is encoded to 3 kinds of different code checks The second video flowing, this corresponding second video flowing of 3 kinds of code checks correspond to HD video, normal video, low clear video respectively；Again This corresponding second video flowing of 3 kinds of code checks is split respectively so that corresponding second video flowing of every kind of code check is all divided into 6 sections Video flowing is segmented, now, there will be 18 sections of video flowing segmentations in the server, and the server can pass through PSNR or SSIM Two methods obtain this 18 sections of video flowing segmentations corresponding quality information respectively.
S102, the quality information that the server is segmented according to the video flowing generates media description information；
Specifically, the quality information that the server can be segmented according to the video flowing generates media description information.Its In, the media description information can include the matter that video flowing corresponding with the second video flowing of at least one code check is segmented Measure information.
The media description information is sent to video playback client by S103, the server, so that the video is broadcast Put the quality information that client generates the first video flowing according to the media description information and the video flowing got segmentation；
Wherein, what the video flowing segmentation that first video flowing is got by the video playback client was constituted regards Frequency flows.
Specifically, the media description information can be sent to video playback client by the server.The video Client end of playing back after the media description information is received, the video playback client can according to current network state and The media description information asks the corresponding video flowing of one of which code check to be segmented to the server, and the period at lower a moment after It is continuous to ask corresponding video flowing to be segmented according to the network state at lower a moment.For example, thering is the second of 3 kinds of code checks to regard in the server Frequency flows, and second video flowing of this 3 kinds of code checks is respectively HD video, normal video, low clear video, if current network state It is not fine, the then video flow point indicated by quality information of the video playback client in the media description information Section, asks code check to be segmented for the video flowing corresponding to the second video flowing of low clear video to the server；If the net at lower a moment Network is in good shape, then asks code check to be next section of video flow point corresponding to the second video flowing of HD video to the server Section.
The video flowing segmentation for being asked the video playback client in the server is sent to the video playback After client, the video playback client is according to the segmentation of each video flowing and media description information generation the received The quality information of one video flowing.Wherein, first video flowing is the video flow point got by the video playback client The video flowing that is constituted of section, i.e., the quality information of described first video flowing be by the video playback client receive it is each The quality information of video flowing segmentation integrates what is determined.
Wherein, the video playback client is after each video flowing segmentation for needing to play out is received, Ke Yicong Extraction and the received corresponding quality information of each video flowing segmentation in the media description information, further according to what is extracted Quality information and default quality evaluation formula calculate the video quality of the first video flowing, to generate first video flowing Quality information.The quality evaluation formula can be set according to video quality assessment algorithm, the master in the quality evaluation formula Calculating parameter is wanted at least to consider the quality information of one or more video flowing segmentations, the quality information at least includes video The video quality of flow point section or the video quality grade of video flowing segmentation, the video quality grade of the video flowing segmentation is basis What the video quality of the video flowing segmentation was divided.
The quality information can include credit rating average value, the credit rating mark of video flowing segmentation that video flowing is segmented It is accurate poor；
For example, when there is the second video flowing of 3 kinds of code checks, can be according to 3 kinds of code checks pair of second video flowing and institute The second video flowing 3 kinds of credit ratings of corresponding video flowing subsection setup are stated, are got further according to the video playback client The present credit rating of each video flowing segmentation, the credit rating average value and video of video flowing segmentation can be calculated respectively The credit rating standard deviation of flow point section.
Main calculating parameter in the quality evaluation formula is also conceivable to following one or more video flowing segmentations Credit rating information：
Credit rating change frequency, the credit rating maximum of video flowing segmentation, the video flowing of video flowing segmentation are segmented Credit rating minimum value；
The credit rating information of i.e. described video flowing segmentation can include：Video flowing segmentation credit rating average value, regard The credit rating that the credit rating standard deviation of frequency flow point section, the credit rating change frequency of video flowing segmentation, video flowing are segmented is most At least one of big value, credit rating minimum value of video flowing segmentation.
The credit rating change frequency of the video flowing segmentation can include：The credit rating change frequency of video flowing segmentation Average value, the credit rating change frequency standard deviation of video flowing segmentation, the credit rating change frequency maximum of video flowing segmentation, The credit rating change frequency minimum value of video flowing segmentation.It can be obtained by counting the video playback client within a period of time The video flowing got is segmented the change frequency in credit rating, is become with the credit rating for calculating the video flowing segmentation Change frequency.Also it can respectively count and obtained per the statistics video playback client in a period of time by that will be that frequency is divided into multistage The video flowing got is segmented the change frequency in credit rating, is segmented with calculating the video flowing in per a period of time Credit rating change frequency.When counting change frequency of the video flowing segmentation in credit rating, one can be pre-set Grade threshold, when the credit rating amplitude of variation that video flowing is segmented exceedes or reached grade threshold, then meter does primary video flow point The mass change of section；When counting change frequency of the video flowing segmentation in credit rating, the matter that can also be segmented in video flowing Amount grade often changes once, then counts the mass change of primary video flow point section.
If for example, the quality information is PSNR information, the quality evaluation formula can be：
Qv=a × Mean (PSNR)+b × Fre (PSNR)+c × Std (PSNR)
Wherein, the Mean (PSNR) is that each video flowing received according to the video playback client is segmented correspondence Quality information calculate video flowing segmentation credit rating average value, the Fre (PSNR) be according to the video playback Each video flowing that client is received is segmented the credit rating change frequency for the video flowing segmentation that corresponding quality information is calculated Rate, the Std (PSNR) is that each video flowing received according to the video playback client is segmented corresponding quality information The credit rating standard deviation of the video flowing segmentation calculated, wherein a, b, c is the design factor of algorithm.
In reality, general networking state all has fluctuation, thus play DASH videos when code check be also with Fluctuation, therefore according to the quality evaluation formula generate the first video flowing quality information, not only can be with average PSNR Or average SSIM is relevant, but also with worst section in video, the bounce in best section and video stage casing it is relevant so that described the The quality information of one video flowing can be more accurate.
The video playback client is generated after the quality information of first video flowing, and the server can be received The quality information for first video flowing that the video playback client is sent.
The video playback client can also extracted and received from received media description information Video flowing is segmented after corresponding quality information, segmentation quality information is sent into the server, the segmentation quality information is extremely Less can the quality information comprising the video flowing segmentation acquired in the video playback client or for identifying the video The identification information of video flowing segmentation accessed by client end of playing back, now, the server can be according to the segmentation quality Quality information and default quality evaluation formula in information generate the quality information of first video flowing；Or, the clothes Business device can also according to it is described segmentation quality information in described in be used for identify the video playback client accessed by regard The identification information of frequency flow point section, searches the quality information of the video flowing segmentation accessed by the video playback client, then root It is investigated that the quality information found and default quality evaluation formula generate the quality information of first video flowing.
The video playback client can also be any assessment equipment in network, it might even be possible to be video server sheet Body, assessment equipment needs to obtain the quality information of the video flowing segmentation of the first video flowing of composition；For example, the video playback client End can be mobile terminal, base station, equipment of the core network, and video server etc..
Therefore, the embodiment of the present invention by media description information by being sent to video playback client so that video The quality information that client end of playing back can be segmented according to video flowing in media description information estimates video playback client and broadcast Put the quality of video, thus do not need transmission impairment video data to server in the case of can low cost realization to regarding The assessment of frequency quality, makes video quality assessment process become quick, effective.
Fig. 2 is referred to again, is the schematic flow sheet of another method for assessing video quality provided in an embodiment of the present invention, Methods described includes：
The original video stream got is encoded to the second video flowing of at least one code check by S201, the server；
Specifically, the video content of the second video flowing of every kind of code check is the video content phase with the original video stream Together, the video quality of the second video flowing of different code checks is different.
The server can be DASH servers, i.e., described server can provide DASH video traffics, the DASH One complete original video stream can be encoded into the second video flowing of several different code checks by video traffic, and by each code check Second video flowing is segmented to obtain video flowing segmentation, wherein, the video playback client of request DASH video traffics can root According to the video flowing segmentation of current channel condition request phase code rate.
Second video flowing of at least one code check is divided at least two video flow points by S202, the server Section；
S203, the quality information that the content obtaining video flowing that server is segmented according to video flowing is segmented；
Specifically, the quality information for the content obtaining video flowing segmentation that server can be segmented according to video flowing.Wherein, institute Stating the quality information of video flowing segmentation can be acquired by two methods of PSNR or SSIM, i.e., described quality information can be PSNR information or SSIM information.
For example, the server gets some original video stream, and the original video stream is encoded to 3 kinds of different code checks The second video flowing, this corresponding second video flowing of 3 kinds of code checks correspond to HD video, normal video, low clear video respectively；Again This corresponding second video flowing of 3 kinds of code checks is split respectively so that corresponding second video flowing of every kind of code check is all divided into 6 sections Video flowing is segmented, now, there will be 18 sections of video flowing segmentations in the server, and the server can pass through PSNR or SSIM Two methods obtain this 18 sections of video flowing segmentations corresponding quality information respectively.
S204, the server selects one of which video flowing conduct in the second video flowing of at least one code check Reference video stream；
Specifically, the server can select one of which video in the second video flowing of at least one code check Stream is used as reference video stream.For example, have the second video flowing of 3 kinds of code checks in the server, the second video flow point of 3 kinds of code checks HD video, normal video, low clear video are not correspond to, at this point it is possible to selection and high definition in the second video flowing of 3 kinds of code checks The corresponding video flowing of video is as reference video stream, or can also select video flowing corresponding with low clear video as with reference to regarding Frequency flows.
S205, the matter that the server is segmented according to video flowing corresponding with the second video flowing of at least one code check Measure the quality information generation media description information of information and video flowing corresponding with reference video stream segmentation；
After reference video stream is chosen, the server can be according to the second video flowing with least one code check The quality information of corresponding video flowing segmentation and the quality information generation of video flowing corresponding with reference video stream segmentation Media description information.
Now, the media description information can include：
The quality information of video flowing segmentation corresponding with the second video flowing of at least one code check；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and with the ginseng Examine the quality information of the corresponding video flowing segmentation of video flowing；Or,
The relative mass information of video flowing segmentation corresponding with the second video flowing of at least one code check, it is described relative Quality information be by video flowing corresponding with the second video flowing of at least one code check be segmented quality information and with institute State the information that the quality information of the corresponding video flowing segmentation of reference video stream is generated；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and for identifying The identification information of the quality information of video flowing segmentation corresponding with the reference video stream.
For example, the mass figures of the relative mass information of a certain section of video flowing segmentation of a certain code check are equal to the code check The mass figures of quality information of this section of video flowing segmentation subtract the segmentation of corresponding with the reference video stream this section of video flowing Quality information mass figures.
When the media description information is segmented including video flowing corresponding with the second video flowing of at least one code check Quality information and video flowing corresponding with the reference video stream segmentation quality information when, the video playback client It can calculate after the media description information is received and obtain each relative mass information.
When the media description information is segmented including video flowing corresponding with the second video flowing of at least one code check Quality information and during identification information for identifying the quality information that corresponding with reference video stream video flowing is segmented, The video playback client can be found and the ginseng after the media description information is received according to the identification information The quality information of video flowing corresponding each video flowing segmentation is examined, then calculates and obtains each relative mass information.
The media description information is sent to video playback client by S206, the server, so that the video is broadcast Put the quality information that client generates the first video flowing according to the media description information and the video flowing got segmentation；
Wherein, what the video flowing segmentation that first video flowing is got by the video playback client was constituted regards Frequency flows.
Specifically, the media description information can be sent to video playback client by the server.The video Client end of playing back after the media description information is received, the video playback client can according to current network state and The media description information asks the corresponding video flowing of one of which code check to be segmented to the server, and the period at lower a moment after It is continuous to ask corresponding video flowing to be segmented according to the network state at lower a moment.For example, thering is the second of 3 kinds of code checks to regard in the server Frequency flows, and second video flowing of this 3 kinds of code checks is respectively HD video, normal video, low clear video, if current network state It is not fine, the then video flow point indicated by quality information of the video playback client in the media description information Section, asks code check to be segmented for the video flowing corresponding to the second video flowing of low clear video to the server；If the net at lower a moment Network is in good shape, then asks code check to be next section of video flow point corresponding to the second video flowing of HD video to the server Section.
The video flowing segmentation for being asked the video playback client in the server is sent to the video playback After client, the video playback client is according to the segmentation of each video flowing and media description information generation the received The quality information of one video flowing.Wherein, first video flowing is the video flow point got by the video playback client The video flowing that section is constituted.
Wherein, the video playback client is after each video flowing segmentation for needing to play out is received, Ke Yicong Extract or calculate in received media description information and the corresponding relative mass of received each video flowing segmentation Information, the first video flowing is calculated further according to the relative mass information and default quality evaluation formula extracted or calculated Video quality, to generate the quality information of first video flowing.The quality evaluation formula can be according to video quality assessment Algorithm is set, and the main calculating parameter in the quality evaluation formula can be included received by the video playback client Each video flowing is segmented average value, maximum, minimum value and the standard deviation of corresponding relative mass information.If the quality Information is PSNR information, then the quality information that the video flowing for setting the video playback client to receive is segmented is PSNR, with The quality information of the reference video stream correspondence video flowing segmentation is PSNRref, relative mass information dPSNR=PSNR- PSNRref, the quality evaluation formula can be：
Qv=a × Mean (dPSNR)+b × Min (dPSNR)+c × Max (dPSNR)+d × Std (dPSNR)
Wherein, the Mean (dPSNR) is each video flowing segmentation pair received according to the video playback client The average value that the relative mass information answered is calculated, the Min (dPSNR) be the video playback client receive it is each Video flowing is segmented the minimum dPSNR of numerical value in corresponding relative mass information, and the Max (dPSNR) is video playback visitor Each video flowing that family termination is received is segmented the maximum dPSNR of numerical value, the Std (dPSNR) in corresponding relative mass information The standard calculated for the corresponding relative mass information of each video flowing segmentation received according to the video playback client Difference, wherein a, b, c, d is the design factor of algorithm.
It is relative that the relative video quality or video flowing that the relative mass information can also include video flowing segmentation are segmented Video quality grade, the relative video credit rating of the video flowing segmentation is the relative video matter being segmented according to the video flowing What amount was divided.The relative mass information can be relative mass information average value, relative mass information variance, relative matter Measure at least one of information change frequency.
In reality, general networking state all has fluctuation, so the code check that DASH plays video is also ripple therewith It is dynamic, therefore the quality information of the first video flowing generated according to the quality evaluation formula, not only can with average PSNR or Average SSIM is relevant, but also with worst section in video, the bounce in best section and video stage casing it is relevant so that the generated The quality information of one video flowing can be more accurate.Estimated based on the quality evaluation formula and using relative mass information Video quality can be reduced due to the influence of video different content, and the deviation for video quality estimation produced, so adopting The video quality estimated with relative mass information can be more accurate than the video quality directly estimated using quality information.
S207, the server receives the quality information for first video flowing that the video playback client is sent；
Specifically, the video playback client is generated after the quality information of first video flowing, the server can To receive the quality information for first video flowing that the video playback client is sent.
S208, the server receives the segmentation quality information that the video playback client is sent；
S209, the server is regarded according to the segmentation quality information and default quality evaluation formula generation described first The quality information of frequency stream；
Specifically, the segmentation quality information includes the matter of the video flowing segmentation accessed by the video playback client Measure information, the relative mass information of video flowing segmentation accessed by the video playback client, for identifying the video At least one of identification information of video flowing segmentation accessed by client end of playing back.The server can be according to described point The quality information and default quality of video flowing segmentation accessed by the video playback client in section quality information Assess the quality information that formula generates first video flowing；Or, the server can be according to the segmentation quality information In the video playback client accessed by video flowing segmentation relative mass information and default quality evaluation it is public Formula generates the quality information of first video flowing；Or, the server can also be according in the segmentation quality information The identification information of the video flowing segmentation for being used to identify accessed by the video playback client, searches the video playback The quality information or relative mass information of video flowing segmentation accessed by client, further according to the quality information found The quality information of first video flowing is generated with default quality evaluation formula, or is believed according to the relative mass found Breath and default quality evaluation formula generate the quality information of first video flowing.
Therefore, the embodiment of the present invention by media description information by being sent to video playback client so that video The quality information that client end of playing back can be segmented according to video flowing in media description information estimates video playback client and broadcast Put the quality of video, thus do not need transmission impairment video data to server in the case of can low cost realization to regarding The assessment of frequency quality, makes video quality assessment process become quick, effective.
Fig. 3 is referred to again, is the schematic flow sheet of the method for another assessment video quality provided in an embodiment of the present invention, Methods described includes：
S301, the media description information that video playback client the reception server is sent；
Generated specifically, the media description information is the quality information being segmented by the server according to video flowing Information, wherein, the video flowing segmentation is the institute obtained by the second video flowing of at least one code check of server segmentation The second video flowing for stating at least one code check is obtained by the server is encoded the original video stream got Video flowing.
The video playback client is before the media description information that the reception server is sent, and the server can be by The original video stream got is encoded to the second video flowing of at least one code check, then the second of at least one code check is regarded Frequency flow point is segmented into the segmentation of at least two video flowings, the quality information for the content obtaining video flowing segmentation being segmented further according to video flowing, And the quality information being segmented according to the video flowing generates media description information.
Wherein, the server can be DASH servers, i.e., described server can provide DASH video traffics, described One complete original video stream can be encoded into the second video flowing of several different code checks by DASH video traffics, and by each code Second video flowing of rate is segmented to obtain video flowing segmentation, wherein, ask the video playback client of DASH video traffics The video flowing of phase code rate can be asked to be segmented according to current channel condition.Wherein, the quality information of the video flowing segmentation can To be acquired by two methods of PSNR or SSIM, i.e., described quality information can be PSNR information or SSIM information.
S302, the video playback client is generated according to the media description information and the video flowing got segmentation The quality information of first video flowing；
Wherein, what the video flowing segmentation that first video flowing is got by the video playback client was constituted regards Frequency flows.
Specifically, the video playback client is after the media description information is received, the video playback client End can to server request, one of which code check be corresponding regards according to current network state and the media description information Frequency flow point section, and continue in the period at lower a moment according to the corresponding video flowing segmentation of the network state at lower a moment request.For example, described Have the second video flowing of 3 kinds of code checks in server, and this 3 kinds of code checks the second video flowing be respectively HD video, normal video, Low clear video, if current network state is not fine, the video playback client is according in the media description information Quality information indicated by video flowing segmentation, to the server ask code check for low clear video the second video flowing corresponding to Video flowing segmentation；If the network state at lower a moment very well, asks code check to be regarded for the second of HD video to the server Frequency flows corresponding next section of video flowing segmentation.
The video flowing segmentation for being asked the video playback client in the server is sent to the video playback After client, the video playback client is according to the segmentation of each video flowing and media description information generation the received The quality information of one video flowing.Wherein, first video flowing is the video flow point got by the video playback client The video flowing that is constituted of section, i.e., the quality information of described first video flowing be by the video playback client receive it is each The quality information of video flowing segmentation integrates what is determined.
Wherein, the video playback client is generated according to the media description information and the video flowing got segmentation The step of quality information of first video flowing, can specifically include：
The video playback client is segmented according to the video flowing got, and correspondence is extracted from the media description information Quality information；The video playback client is according to the quality information extracted and default quality evaluation formula generation first The quality information of video flowing.
The quality evaluation formula can be set according to video quality assessment algorithm, main in the quality evaluation formula Calculating parameter can include and the corresponding quality information of each video flowing segmentation received by the video playback client Average value, maximum, minimum value and standard deviation.If the quality information is PSNR information, the quality evaluation formula Can be：
Qv=a × Mean (PSNR)+b × Min (PSNR)+c × Max (PSNR)+d × Std (PSNR)
Wherein, the Mean (PSNR) is that each video flowing received according to the video playback client is segmented correspondence The average value that calculates of quality information, the Min (PSNR) is each video flowing that the video playback client is received The minimum PSNR of numerical value in corresponding quality information is segmented, Max (PSNR) the video playback client is received Each video flowing is segmented the maximum PSNR of numerical value in corresponding quality information, and the Std (PSNR) is according to the video playback The standard deviation that the corresponding quality information of each video flowing segmentation that client is received is calculated, wherein a, b, c, d is algorithm Design factor.
In reality, general networking state all has fluctuation, thus play DASH videos when code check be also with Fluctuation, therefore according to the quality evaluation formula generate the first video flowing quality information, not only can be with average PSNR Or average SSIM is relevant, but also with worst section in video, the bounce in best section and video stage casing it is relevant so that described the The quality information of one video flowing can be more accurate.
The video playback client is generated after the quality information of first video flowing, the video playback client The quality information of first video flowing can be sent in the server.
The video playback client can also extracted and received from received media description information Video flowing is segmented after corresponding quality information, segmentation quality information is sent into the server, the segmentation quality information is extremely Less can the quality information comprising the video flowing segmentation acquired in the video playback client or for identifying the video The identification information of video flowing segmentation accessed by client end of playing back.Now, the server can be according to the segmentation quality Quality information and default quality evaluation formula in information generate the quality information of first video flowing；Or, the clothes Business device can also according to it is described segmentation quality information in described in be used for identify the video playback client accessed by regard The identification information of frequency flow point section, searches the quality information of the video flowing segmentation accessed by the video playback client, then root It is investigated that the quality information found and default quality evaluation formula generate the quality information of first video flowing.
Therefore, the embodiment of the present invention by media description information by being sent to video playback client so that video The quality information that client end of playing back can be segmented according to video flowing in media description information estimates video playback client and broadcast Put the quality of video, thus do not need transmission impairment video data to server in the case of can low cost realization to regarding The assessment of frequency quality, makes video quality assessment process become quick, effective.
Fig. 4 is referred to again, is the schematic flow sheet of the method for another assessment video quality provided in an embodiment of the present invention, Methods described includes：
S401, the media description information that video playback client the reception server is sent；
Generated specifically, the media description information is the quality information being segmented by the server according to video flowing Information, wherein, the video flowing segmentation is the institute obtained by the second video flowing of at least one code check of server segmentation The second video flowing for stating at least one code check is obtained by the server is encoded the original video stream got Video flowing.
The video playback client is before the media description information that the reception server is sent, and the server can be by The original video stream got is encoded to the second video flowing of at least one code check, then the second of at least one code check is regarded Frequency flow point is segmented into the segmentation of at least two video flowings, the quality information for the content obtaining video flowing segmentation being segmented further according to video flowing, And the quality information being segmented according to the video flowing generates media description information.
Wherein, the server can be DASH servers, i.e., described server can provide DASH video traffics, described One complete original video stream can be encoded into the second video flowing of several different code checks by DASH video traffics, and by each code Second video flowing of rate is segmented to obtain video flowing segmentation, wherein, ask the video playback client of DASH video traffics The video flowing of phase code rate can be asked to be segmented according to current channel condition.Wherein, the quality information of the video flowing segmentation can To be acquired by two methods of PSNR or SSIM, i.e., described quality information can be PSNR information or SSIM information.
Wherein, when the media description information be the quality information that is segmented by the server according to video flowing and with ginseng When examining the information that the quality information of video flowing corresponding video flowing segmentation is generated, the media description information can specifically be wrapped Include：
The quality information of video flowing segmentation corresponding with the second video flowing of at least one code check；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and with the ginseng Examine the quality information of the corresponding video flowing segmentation of video flowing；Or,
The relative mass information of video flowing segmentation corresponding with the second video flowing of at least one code check, it is described relative Quality information be by video flowing corresponding with the second video flowing of at least one code check be segmented quality information and with institute State the information that the quality information of the corresponding video flowing segmentation of reference video stream is generated；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and for identifying The identification information of the quality information of video flowing segmentation corresponding with the reference video stream；
Wherein, the reference video stream is selected in second video flowing of the server at least one code check The video flowing gone out, and the server is segmented according to video flowing corresponding with the second video flowing of at least one code check Quality information and the quality information generation media description information of video flowing corresponding with reference video stream segmentation.
For example, the mass figures of the relative mass information of a certain section of video flowing segmentation of a certain code check are equal to the code check The mass figures of quality information of this section of video flowing segmentation subtract the segmentation of corresponding with the reference video stream this section of video flowing Quality information mass figures.
When the media description information is segmented including video flowing corresponding with the second video flowing of at least one code check Quality information and video flowing corresponding with the reference video stream segmentation quality information when, the video playback client It can calculate after the media description information is received and obtain each relative mass information.
When the media description information is segmented including video flowing corresponding with the second video flowing of at least one code check Quality information and during identification information for identifying the quality information that corresponding with reference video stream video flowing is segmented, The video playback client can be found and the ginseng after the media description information is received according to the identification information The quality information of video flowing corresponding each video flowing segmentation is examined, then calculates and obtains each relative mass information.
S402, the video playback client is generated according to the media description information and the video flowing got segmentation The quality information of first video flowing；
Wherein, what the video flowing segmentation that first video flowing is got by the video playback client was constituted regards Frequency flows.
Specifically, the video playback client is after the media description information is received, the video playback client End can to server request, one of which code check be corresponding regards according to current network state and the media description information Frequency flow point section, and continue in the period at lower a moment according to the corresponding video flowing segmentation of the network state at lower a moment request.For example, described Have the second video flowing of 3 kinds of code checks in server, and this 3 kinds of code checks the second video flowing be respectively HD video, normal video, Low clear video, if current network state is not fine, the video playback client is according in the media description information Quality information indicated by video flowing segmentation, to the server ask code check for low clear video the second video flowing corresponding to Video flowing segmentation；If the network state at lower a moment very well, asks code check to be regarded for the second of HD video to the server Frequency flows corresponding next section of video flowing segmentation.
The video flowing segmentation for being asked the video playback client in the server is sent to the video playback After client, the video playback client is according to the segmentation of each video flowing and media description information generation the received The quality information of one video flowing.Wherein, first video flowing is the video flow point got by the video playback client The video flowing that section is constituted.
Wherein, the video playback client is generated according to the media description information and the video flowing got segmentation The step of quality information of first video flowing, can specifically include：
The video playback client is segmented according to the video flowing got, is extracted or is counted from the media description information Calculate corresponding relative mass information；The video playback client is according to the relative mass information extracted or calculated and presets Quality evaluation formula generate the first video flowing quality information.
The quality evaluation formula can be set according to video quality assessment algorithm, main in the quality evaluation formula Each video flowing that calculating parameter can include received by the video playback client is segmented corresponding relative mass information Average value, maximum, minimum value and standard deviation.If the quality information is PSNR information, the video is set to broadcast The quality information for putting the video flowing segmentation that client is received is PSNR, the matter of video flowing segmentation corresponding with the reference video stream Amount information is PSNRref, relative mass information dPSNR=PSNR-PSNRref, the quality evaluation formula can be：
Qv=a × Mean (dPSNR)+b × Min (dPSNR)+c × Max (dPSNR)+d × Std (dPSNR)
Wherein, the Mean (dPSNR) is each video flowing segmentation pair received according to the video playback client The average value that the relative mass information answered is calculated, the Min (dPSNR) be the video playback client receive it is each Video flowing is segmented the minimum dPSNR of numerical value in corresponding relative mass information, and the Max (dPSNR) is video playback visitor Each video flowing that family termination is received is segmented the maximum dPSNR of numerical value, the Std (dPSNR) in corresponding relative mass information The standard calculated for the corresponding relative mass information of each video flowing segmentation received according to the video playback client Difference, wherein a, b, c, d is the design factor of algorithm.
In reality, general networking state all has fluctuation, so the code check that DASH plays video is also ripple therewith It is dynamic, therefore the quality information of the first video flowing generated according to the quality evaluation formula, not only can with average PSNR or Average SSIM is relevant, but also with worst section in video, the bounce in best section and video stage casing it is relevant so that the generated The quality information of one video flowing can be more accurate.Estimated based on the quality evaluation formula and using relative mass information Video quality can be reduced due to the influence of video different content, and the deviation for video quality estimation produced, so adopting The video quality estimated with relative mass information can be more accurate than the video quality directly estimated using quality information.
S403, the video playback client sends the quality information of first video flowing to the server；
Specifically, the video playback client is generated after the quality information of first video flowing, the video is broadcast Quality information that client can send first video flowing is put to the server, the server is collected user The quality of watched video.
S404, the video playback client sends segmentation quality information to the server, so that the server root The quality information of first video flowing is generated according to the segmentation quality information and default quality evaluation formula；
Specifically, the segmentation quality information includes the matter of the video flowing segmentation accessed by the video playback client Measure information, the relative mass information of video flowing segmentation accessed by the video playback client, for identifying the video At least one of identification information of video flowing segmentation accessed by client end of playing back.Now, the server can basis Quality information and preset that video flowing accessed by the video playback client in the segmentation quality information is segmented Quality evaluation formula generate the quality information of first video flowing；Or, the server can be according to the segmentation matter Measure the relative mass information and default quality of the video flowing segmentation accessed by the video playback client in information Assess the quality information that formula generates first video flowing；Or, the server can also be according to the segmentation quality letter In breath it is described be used for identify accessed by the video playback client video flowing segmentation identification information, search described in regard The quality information or relative mass information of video flowing segmentation accessed by frequency client end of playing back, further according to the matter found Measure information and default quality evaluation formula generates the quality information of first video flowing, or it is described relative according to what is found Quality information and default quality evaluation formula generate the quality information of first video flowing.
Therefore, the embodiment of the present invention by media description information by being sent to video playback client so that video The quality information that client end of playing back can be segmented according to video flowing in media description information estimates video playback client and broadcast Put the quality of video, thus do not need transmission impairment video data to server in the case of can low cost realization to regarding The assessment of frequency quality, makes video quality assessment process become quick, effective.
Fig. 5 is referred to again, is the schematic flow sheet of the method for another assessment video quality provided in an embodiment of the present invention, Methods described includes：
S501, is obtained and the video flowing corresponding quality information of segmentation or relative mass information；
S502, video flowing is calculated based on default quality evaluation formula, and according to quality information or relative mass information Video quality；
Specifically, the quality information is the information that the content obtaining being segmented according to video flowing is arrived；The relative mass letter Breath is generated according to the quality information of the quality information and video flowing corresponding with reference video stream segmentation；Wherein, The reference video stream is selected in the video flowing of at least one code check.
The quality information at least includes the video quality of video flowing segmentation or the video quality grade of video flowing segmentation, institute The video quality grade for stating video flowing segmentation is that the video quality being segmented according to the video flowing is divided；
For example, the video quality of video flowing segmentation has the quality of 5 kinds of different numerical value, then, the video matter of video flowing segmentation Amount grade can be divided into 5 grades according to the size order of mass figures.
The relative mass information includes the relative video quality of video flowing segmentation or the relative video matter of video flowing segmentation Grade is measured, the relative video credit rating of the video flowing segmentation is that the relative video quality being segmented according to the video flowing is carried out Divide.
Wherein, the calculating parameter in the default quality evaluation formula includes：Quality information average value, quality information side At least one of difference, quality information change frequency；Or, it is relative mass information average value, relative mass information variance, relative At least one of quality information change frequency.
The quality information average value can include the average value for the video quality that each video flowing is segmented, or each is regarded The average value of the video quality grade of frequency flow point section；The quality information variance can include the video matter that each video flowing is segmented The variance of amount, or each video flowing segmentation video quality grade variance；The relative mass information average value can be wrapped Include the average value of the relative video quality of each video flowing segmentation, or the segmentation of each video flowing relative video credit rating Average value；The relative mass information variance can include the variance for the relative video quality that each video flowing is segmented, or respectively The variance of the relative video credit rating of individual video flowing segmentation.
The quality information change frequency or the relative mass information change frequency include：It is segmented according to the video flowing The frequency that change frequency and the corresponding reproduction time of the video flowing in quality are calculated；
For example, the video flowing received by some video playback client is segmented in the corresponding reproduction time of the video flowing Interior, mass change number of times is 20 times, and the reproduction time is 200 seconds, then, frequency in the reproduction time for 0.1 time/ Second.
Or, the quality information change frequency or the relative mass information change frequency include：According to the video The change frequency that video flowing in stream in multiple periods is segmented in quality is calculated and multiple periods in the video flowing The corresponding frequency of difference；
For example, video flowing is divided into 3 periods, each period is 100 seconds, the video flowing within first period It is 15 times to be segmented the change frequency in quality, and the change frequency that the video flowing within second period is segmented in quality is 25 times, the change frequency that the video flowing within the 3rd period is segmented in quality is 10 times, then these three periods point Not corresponding frequency is 0.15 time/second, 0.25 time/second, 0.1 time/second.
Or, the quality information change frequency or the relative mass information change frequency include：According to the video Flow multiple periods calculate in corresponding reproduction time or the video flowing increased quality frequency and/or Quality Down frequency Rate；
Increased quality frequency be specifically according in the corresponding reproduction time of the video flowing or in the video flowing certain The increased quality number of times of video flowing segmentation in the individual period calculates what is obtained；Quality Down frequency is specifically according to described The Quality Down number of times of video flowing segmentation in the corresponding reproduction time of video flowing or in the video flowing in some period Calculate what is obtained.
Or, the quality information change frequency or the relative mass information change frequency include：The video flow point The change frequency of section quality in multiple periods in the corresponding reproduction time of the video flowing or the video flowing.
Or, the quality information change frequency or the relative mass information change frequency include：The video flow point The lifting number of times and/or quality of section quality in multiple periods in the corresponding reproduction time of the video flowing or the video flowing Decline number of times.
The lifting number of times of the quality be in the corresponding reproduction time of the video flowing or in the video flowing some The increased quality number of times of video flowing segmentation in period；The decline number of times of the quality is broadcasting corresponding in the video flowing The Quality Down number of times of video flowing segmentation in time or in the video flowing in some period.
Wherein, the quality information change frequency or the relative mass information change frequency are according in the video flowing Change frequency average value that multiple periods are calculated, change frequency standard deviation, change frequency maximum, change frequency are minimum At least one of value；
Specifically, according to multiple periods in the video flowing respectively corresponding frequency can calculate change frequency put down Average, change frequency standard deviation, change frequency maximum, change frequency minimum value；Or, according to it is multiple in the video flowing Period, corresponding increased quality frequency or Quality Down frequency can calculate change frequency average value, change frequency mark respectively Accurate poor, change frequency maximum, change frequency minimum value；Or, according to corresponding respectively with multiple periods in the video flowing The lifting number of times of quality or the decline number of times of quality can calculate change frequency average value, change frequency standard deviation, change Frequency maxima, change frequency minimum value.
Wherein, the change frequency is to be segmented each change in quality according to the video flowing to count what is obtained, The change being either segmented according to the video flowing in quality counts what is obtained when exceeding change threshold.For example, can be pre- One change threshold is first set, and when the mass change amplitude that video flowing is segmented exceedes or reaches change threshold, then meter is done once The mass change of video flowing segmentation.When the mass change amplitude that video flowing is segmented exceedes, less than average video quality, and change is reached When changing threshold value, then meter does the mass change of primary video flow point section.Certainly, the decline number of times and the lifting number of times of quality of quality It can be counted by the change threshold.
Therefore, the embodiment of the present invention can be calculated accurately by the average value of video quality, variance, jumping frequency rate Video quality.
Fig. 6 is referred to, is a kind of structural representation of system for assessing video quality provided in an embodiment of the present invention, it is described System includes：Server 1 and video playback client 2；
The server 1, the quality information that the content obtaining video flowing for being segmented according to video flowing is segmented, further according to institute The quality information generation media description information of video flowing segmentation is stated, and the media description information is sent to video playback client End 2；
The video playback client 2, the media description information sent for the reception server 1, the media description letter Breath is the information that the quality information being segmented by the server 1 according to video flowing is generated, and according to the media description information And the quality information of video flowing segmentation the first video flowing of generation got；
Wherein, what the video flowing segmentation that first video flowing is got by the video playback client 2 was constituted Video flowing.
Wherein, the server 1, the original video stream for being additionally operable to get is encoded to the second of at least one code check and regarded Frequency is flowed, and the second video flowing of at least one code check is divided into the segmentation of at least two video flowings.
Wherein, the server 1, specifically for selecting one of which in the second video flowing of at least one code check Video flowing is as reference video stream, and the matter being segmented according to video flowing corresponding with the second video flowing of at least one code check Measure the quality information generation media description information of information and video flowing corresponding with reference video stream segmentation.
Wherein, the video playback client 2, specifically for being segmented according to the video flowing got, is retouched from the media State and corresponding quality information is extracted in information, and according to the quality information extracted and default quality evaluation formula generation first The quality information of video flowing.
Wherein, the video playback client 2, specifically for being segmented according to the video flowing got, is retouched from the media State and corresponding relative mass information is extracted or calculated in information, and according to the relative mass information extracted or calculated and preset Quality evaluation formula generate the first video flowing quality information.
Wherein, the media description information is specifically included：
The quality information of video flowing segmentation corresponding with the second video flowing of at least one code check；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and with the ginseng Examine the quality information of the corresponding video flowing segmentation of video flowing；Or,
The relative mass information of video flowing segmentation corresponding with the second video flowing of at least one code check, it is described relative Quality information be by video flowing corresponding with the second video flowing of at least one code check be segmented quality information and with institute State the information that the quality information of the corresponding video flowing segmentation of reference video stream is generated；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and for identifying The identification information of the quality information of video flowing segmentation corresponding with the reference video stream.
Therefore, the embodiment of the present invention by media description information by being sent to video playback client 2 so that video The quality information that client end of playing back 2 can be segmented according to video flowing in media description information estimates the institute of video playback client 2 The quality of video is played, so that realization that can be inexpensive in the case where not needing transmission impairment video data to server 1 Assessment to video quality, makes video quality assessment process become quick, effective.
The server 1 and video playback client 2 in Fig. 6 are described in detail below.
It is a kind of structural representation of server 1 provided in an embodiment of the present invention, the service specifically, referring to Fig. 7 Device 1 can include：Acquisition module 11, the first generation module 12, description information sending module 13；
The acquisition module 11, the quality information that the content obtaining video flowing for being segmented according to video flowing is segmented；
Specifically, the quality letter for the content obtaining video flowing segmentation that the acquisition module 11 can be segmented according to video flowing Breath.The server 1 can be DASH servers 1, i.e., described server 1 can provide DASH video traffics, and the DASH is regarded One complete original video stream can be encoded into the second video flowing of several different code checks by frequency business, and by the of each code check Two video flowings are segmented to obtain video flowing segmentation, wherein, the video playback client 2 of request DASH video traffics can basis The video flowing segmentation of current channel condition request phase code rate.Wherein, the acquisition module 11 is obtaining the video flow point During the quality information of section, it can be acquired by two methods of PSNR or SSIM, i.e., described quality information can be PSNR letters Breath or SSIM information.
Before the quality information that the content obtaining that the acquisition module 11 is segmented according to video flowing is segmented to video flowing, institute State the second video flowing that the original video stream got is encoded at least one code check by server 1, then by least one Second video flowing of code check is divided into the segmentation of at least two video flowings, wherein, the video content of the second video flowing of every kind of code check It is identical with the video content of the original video stream, the video quality of the second video flowing of different code checks is different.
First generation module 12, the quality information for being segmented according to the video flowing generates media description information；
Specifically, the quality information that first generation module 12 can be segmented according to the video flowing generates media description Information.Wherein, the media description information can include video flowing corresponding with the second video flowing of at least one code check The quality information of segmentation.
The description information sending module 13, for the media description information to be sent into video playback client 2, with Make the video playback client 2 according to the media description information and the video flowing got segmentation the first video flowing of generation Quality information；
Specifically, the media description information can be sent to video playback client by the description information sending module 13 End 2.The video playback client 2 is after the media description information is received, and the video playback client 2 can basis Current network state and the media description information ask the corresponding video flowing of one of which code check to be segmented to the server 1, And continue to ask corresponding video flowing to be segmented according to the network state at lower a moment in the period at lower a moment.For example, in the server 1 There is the second video flowing of 3 kinds of code checks, and second video flowing of this 3 kinds of code checks is respectively HD video, normal video, low regarded clearly Frequently, if current network state is not fine, quality of the video playback client 2 in the media description information Video flowing segmentation indicated by information, asks code check to be regarding corresponding to the second video flowing of low clear video to the server 1 Frequency flow point section；If the network state at lower a moment is very well, the second video flowing that code check is HD video is asked to the server 1 Corresponding next section of video flowing segmentation.
The video flowing segmentation for being asked the video playback client 2 in the server 1 is sent to the video and broadcast Put after client 2, the video playback client 2 is given birth to according to each video flowing segmentation received and the media description information Into the quality information of the first video flowing.Wherein, first video flowing is the video got by the video playback client 2 The video flowing that flow point section is constituted, i.e., the quality information of described first video flowing is received by the video playback client 2 Each video flowing segmentation quality information integrate determine.
Therefore, the embodiment of the present invention by media description information by being sent to video playback client 2 so that video The quality information that client end of playing back 2 can be segmented according to video flowing in media description information estimates the institute of video playback client 2 The quality of video is played, so that realization that can be inexpensive in the case where not needing transmission impairment video data to server 1 Assessment to video quality, makes video quality assessment process become quick, effective.
Fig. 8 is referred to again, is the structural representation of another server 1 provided in an embodiment of the present invention, the server 1 It can include：Coding module 14, segmentation module 15, acquisition module 11, the first generation module 12, description information sending module 13, Play quality receiving module 16, segmentation quality reception module 17, the second generation module 18；
The coding module 14, the second video for the original video stream got to be encoded to at least one code check Stream；
Specifically, the original video stream got can be encoded to the second of at least one code check by the coding module 14 Video flowing.The video content of second video flowing of every kind of code check is, different codes identical with the video content of the original video stream The video quality of second video flowing of rate is different.
The server 1 can be DASH servers 1, i.e., described server 1 can provide DASH video traffics, described One complete original video stream can be encoded into the second video flowing of several different code checks by DASH video traffics, and by each code Second video flowing of rate is segmented to obtain video flowing segmentation, wherein, ask the video playback client 2 of DASH video traffics The video flowing of phase code rate can be asked to be segmented according to current channel condition.
The segmentation module 15, for the second video flowing of at least one code check to be divided into at least two video flowings Segmentation；
The acquisition module 11, the quality information that the content obtaining video flowing for being segmented according to video flowing is segmented；
Specifically, the quality letter for the content obtaining video flowing segmentation that the acquisition module 11 can be segmented according to video flowing Breath.Wherein, the quality information of the video flowing segmentation can be acquired by two methods of PSNR or SSIM, i.e., described quality Information can be PSNR information or SSIM information.
First generation module 12, the quality information for being segmented according to the video flowing generates media description information；
Specifically, first generation module 12 can be according to corresponding with the second video flowing of at least one code check The quality information generation media description information of the video flowing segmentation；First generation module 12 can also first it is described at least One of which video flowing is selected in a kind of second video flowing of code check as reference video stream, further according to at least one code The quality information of the corresponding video flowing segmentation of the second video flowing of rate and video flowing corresponding with reference video stream segmentation Quality information generation media description information.
Now, the media description information can include：
The quality information of video flowing segmentation corresponding with the second video flowing of at least one code check；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and with the ginseng Examine the quality information of the corresponding video flowing segmentation of video flowing；Or,
The relative mass information of video flowing segmentation corresponding with the second video flowing of at least one code check, it is described relative Quality information be by video flowing corresponding with the second video flowing of at least one code check be segmented quality information and with institute State the information that the quality information of the corresponding video flowing segmentation of reference video stream is generated；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and for identifying The identification information of the quality information of video flowing segmentation corresponding with the reference video stream.
For example, the mass figures of the relative mass information of a certain section of video flowing segmentation of a certain code check are equal to the code check The mass figures of quality information of this section of video flowing segmentation subtract the segmentation of corresponding with the reference video stream this section of video flowing Quality information mass figures.
When the media description information is segmented including video flowing corresponding with the second video flowing of at least one code check Quality information and video flowing corresponding with the reference video stream segmentation quality information when, the video playback client 2 can calculate after the media description information is received and obtain each relative mass information.
When the media description information is segmented including video flowing corresponding with the second video flowing of at least one code check Quality information and during identification information for identifying the quality information that corresponding with reference video stream video flowing is segmented, The video playback client 2 can after the media description information is received, according to the identification information find with it is described The quality information of reference video stream corresponding each video flowing segmentation, then calculate and obtain each relative mass information.
The description information sending module 13, for the media description information to be sent into video playback client 2, with Make the video playback client 2 according to the media description information and the video flowing got segmentation the first video flowing of generation Quality information；
Specifically, the media description information can be sent to video playback client by the description information sending module 13 End 2.The video playback client 2 is after the media description information is received, and the video playback client 2 can basis Current network state and the media description information ask the corresponding video flowing of one of which code check to be segmented to the server 1, And continue to ask corresponding video flowing to be segmented according to the network state at lower a moment in the period at lower a moment.For example, in the server 1 There is the second video flowing of 3 kinds of code checks, and second video flowing of this 3 kinds of code checks is respectively HD video, normal video, low regarded clearly Frequently, if current network state is not fine, quality of the video playback client 2 in the media description information Video flowing segmentation indicated by information, asks code check to be regarding corresponding to the second video flowing of low clear video to the server 1 Frequency flow point section；If the network state at lower a moment is very well, the second video flowing that code check is HD video is asked to the server 1 Corresponding next section of video flowing segmentation.
The video flowing segmentation for being asked the video playback client 2 in the server 1 is sent to the video and broadcast Put after client 2, the video playback client 2 is given birth to according to each video flowing segmentation received and the media description information Into the quality information of the first video flowing.Wherein, first video flowing is the video got by the video playback client 2 The video flowing that flow point section is constituted.
The play quality receiving module 16, for receiving first video that the video playback client 2 is sent The quality information of stream；
The segmentation quality reception module 17, for receiving the segmentation quality information that the video playback client 2 is sent, Quality information of the segmentation quality information comprising the video flowing segmentation accessed by the video playback client 2, described regard Accessed by frequency client end of playing back 2 video flowing segmentation relative mass information, for identifying the institute of video playback client 2 At least one of identification information of video flowing segmentation got；
Second generation module 18, for according to the segmentation quality information and default quality evaluation formula generation described the The quality information of one video flowing；
Specifically, the second generation module 18 can be according to the video playback client 2 in the segmentation quality information The quality information and default quality evaluation formula of accessed video flowing segmentation generate the quality of first video flowing Information；Or, the second generation module 18 can be according to acquired in the video playback client 2 being segmented in quality information The relative mass information and default quality evaluation formula of the video flowing segmentation arrived generate the quality letter of first video flowing Breath；Or, the second generation module 18 can also be used to identify the video playback according in the segmentation quality information The identification information of video flowing segmentation accessed by client 2, searches the video flowing accessed by the video playback client 2 The quality information or relative mass information of segmentation, give birth to further according to the quality information found and default quality evaluation formula Into the quality information of first video flowing, or according to the relative mass information and default quality evaluation formula found Generate the quality information of first video flowing.
When the quality information of video flowing segmentation of second generation module 18 according to accessed by the video playback client 2 When generating the quality information of first video flowing with default quality evaluation formula, the quality evaluation formula can according to regarding Frequency quality evaluation algorithm is set, and the main calculating parameter in the quality evaluation formula can include and the video playback client Each video flowing received by end 2 is segmented average value, maximum, minimum value and the standard deviation of corresponding quality information. If the quality information is PSNR information, the quality evaluation formula can be：
Qv=a × Mean (PSNR)+b × Min (PSNR)+c × Max (PSNR)+d × Std (PSNR)
Wherein, the Mean (PSNR) is each video flowing segmentation pair received according to the video playback client 2 The average value that the quality information answered is calculated, the Min (PSNR) is each video that the video playback client 2 is received The minimum PSNR of numerical value in the corresponding quality information of flow point section, the Max (PSNR) is that the video playback client 2 is received Each video flowing be segmented the maximum PSNR of numerical value in corresponding quality information, the Std (PSNR) is broadcasts according to the video Put each video flowing that client 2 receives and be segmented the standard deviation that corresponding quality information is calculated, wherein a, b, c, d is calculates The design factor of method.
In reality, general networking state all has fluctuation, thus play DASH videos when code check be also with Fluctuation, therefore according to the quality evaluation formula generate the first video flowing quality information, not only can be with average PSNR Or average SSIM is relevant, but also with worst section in video, the bounce in best section and video stage casing it is relevant so that described the The quality information of one video flowing can be more accurate.
When the relative mass of video flowing segmentation of second generation module 18 according to accessed by the video playback client 2 When information and default quality evaluation formula generate the quality information of first video flowing, the quality evaluation formula can root Set according to video quality assessment algorithm, the main calculating parameter in the quality evaluation formula can include video playback visitor Each video flowing received by family end 2 is segmented average value, maximum, minimum value and the standard of corresponding relative mass information Difference.If the quality information is PSNR information, the matter that the video flowing for setting the video playback client 2 to receive is segmented Amount information is PSNR, and the quality information of video flowing segmentation corresponding with the reference video stream is PSNRref, relative mass information DPSNR=PSNR-PSNRref, the quality evaluation formula can be：
Qv=a × Mean (dPSNR)+b × Min (dPSNR)+c × Max (dPSNR)+d × Std (dPSNR)
Wherein, the Mean (dPSNR) is each video flowing segmentation pair received according to the video playback client 2 The average value that the relative mass information answered is calculated, the Min (dPSNR) be the video playback client 2 receive it is every Individual video flowing is segmented the minimum dPSNR of numerical value in corresponding relative mass information, and the Max (dPSNR) is the video playback Each video flowing that client 2 is received is segmented numerical value maximum dPSNR, the Std in corresponding relative mass information (dPSNR) it is that each video flowing received according to the video playback client 2 is segmented corresponding relative mass information calculating The standard deviation gone out, wherein a, b, c, d is the design factor of algorithm.
In reality, general networking state all has fluctuation, so the code check that DASH plays video is also ripple therewith It is dynamic, therefore the quality information of the first video flowing generated according to the quality evaluation formula, not only can with average PSNR or Average SSIM is relevant, but also with worst section in video, the bounce in best section and video stage casing it is relevant so that the generated The quality information of one video flowing can be more accurate.Estimated based on the quality evaluation formula and using relative mass information Video quality can be reduced due to the influence of video different content, and the deviation for video quality estimation produced, so adopting The video quality estimated with relative mass information can be more accurate than the video quality directly estimated using quality information.
Further, then Fig. 9 is referred to, is the first generation module 12 in Fig. 8, first generation module 12 can be wrapped Include：With reference to selecting unit 121, information generating unit 122；
The reference selecting unit 121, for selecting one of which in the second video flowing of at least one code check Video flowing is used as reference video stream；
Specifically, the reference selecting unit 121 can select it in the second video flowing of at least one code check A kind of middle video flowing is used as reference video stream.For example, there is 3 kinds of code checks in the server 11, second corresponding to 3 kinds of code checks regards Frequency stream is respectively HD video, normal video, low clear video, and now, the reference selecting unit 121 can be in 3 kinds of code checks Selection the second video flowing corresponding with HD video can also be selected as reference video stream, or the reference selecting unit 121 The second video flowing corresponding with low clear video is selected as reference video stream.
Described information generation unit 122, for according to video corresponding with the second video flowing of at least one code check The quality information of flow point section and the quality information generation media description letter of video flowing corresponding with reference video stream segmentation Breath；
The media description information that described information generation unit 122 is generated can include：
The quality information of video flowing segmentation corresponding with the second video flowing of at least one code check；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and with the ginseng Examine the quality information of the corresponding video flowing segmentation of video flowing；Or,
The relative mass information of video flowing segmentation corresponding with the second video flowing of at least one code check, it is described relative Quality information be by video flowing corresponding with the second video flowing of at least one code check be segmented quality information and with institute State the information that the quality information of the corresponding video flowing segmentation of reference video stream is generated；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and for identifying The identification information of the quality information of video flowing segmentation corresponding with the reference video stream.
Therefore, the embodiment of the present invention by media description information by being sent to video playback client 2 so that video The quality information that client end of playing back 2 can be segmented according to video flowing in media description information estimates the institute of video playback client 2 The quality of video is played, so that realization that can be inexpensive in the case where not needing transmission impairment video data to server 1 Assessment to video quality, makes video quality assessment process become quick, effective.
Figure 10 is referred to, is a kind of structural representation of video playback client 2 provided in an embodiment of the present invention, it is described to regard Frequency client end of playing back 2 can include：Description information receiving module 21, quality information generation module 22；
The description information receiving module 21, the media description information sent for the reception server 1, the media description Information is the information that the quality information being segmented by the server 1 according to video flowing is generated；
Specifically, the video flowing segmentation is split by the server 1 obtained by second video flowing of at least one code check Arrive, the second video flowing of at least one code check is to be encoded the original video stream got by the server 1 Resulting video flowing.
The description information receiving module 21 is before the media description information that the reception server 1 is sent, the server 1 The original video stream got can be encoded to the second video flowing of at least one code check, then by least one code check Second video flowing is divided into the segmentation of at least two video flowings, the quality for the content obtaining video flowing segmentation being segmented further according to video flowing Information, and the quality information being segmented according to the video flowing generates media description information.
Wherein, the server 1 can be DASH servers 1, i.e., described server 1 can provide DASH video traffics, One complete original video stream can be encoded into the second video flowing of several different code checks by the DASH video traffics, and will be every Second video flowing of individual code check is segmented to obtain video flowing segmentation, wherein, ask the video playback visitor of DASH video traffics Family end 2 can ask the video flowing of phase code rate to be segmented according to current channel condition.Wherein, the quality letter of the video flowing segmentation Breath can be acquired by two methods of PSNR or SSIM, i.e., described quality information can be PSNR information or SSIM information.
Wherein, when the media description information be the quality information that is segmented by the server 1 according to video flowing and with During the information that the quality information of the corresponding video flowing segmentation of reference video stream is generated, the media description information can specifically be wrapped Include：
The quality information of video flowing segmentation corresponding with the second video flowing of at least one code check；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and with the ginseng Examine the quality information of the corresponding video flowing segmentation of video flowing；Or,
The relative mass information of video flowing segmentation corresponding with the second video flowing of at least one code check, it is described relative Quality information be by video flowing corresponding with the second video flowing of at least one code check be segmented quality information and with institute State the information that the quality information of the corresponding video flowing segmentation of reference video stream is generated；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and for identifying The identification information of the quality information of video flowing segmentation corresponding with the reference video stream；
Wherein, the reference video stream is selected in second video flowing of the server 1 at least one code check The video flowing selected out, and the server 1 is according to video flow point corresponding with the second video flowing of at least one code check The quality information of section and the quality information generation media description information of video flowing corresponding with reference video stream segmentation.
For example, the mass figures of the relative mass information of a certain section of video flowing segmentation of a certain code check are equal to the code check The mass figures of quality information of this section of video flowing segmentation subtract the segmentation of corresponding with the reference video stream this section of video flowing Quality information mass figures.
When the media description information is segmented including video flowing corresponding with the second video flowing of at least one code check Quality information and video flowing corresponding with the reference video stream segmentation quality information when, the video playback client 2 can calculate after the media description information is received and obtain each relative mass information.
When the media description information is segmented including video flowing corresponding with the second video flowing of at least one code check Quality information and during identification information for identifying the quality information that corresponding with reference video stream video flowing is segmented, The video playback client 2 can after the media description information is received, according to the identification information find with it is described The quality information of reference video stream corresponding each video flowing segmentation, then calculate and obtain each relative mass information.
The quality information generation module 22, for according to the media description information and the video flowing got segmentation Generate the quality information of the first video flowing；
Wherein, what the video flowing segmentation that first video flowing is got by the video playback client 2 was constituted Video flowing.
Specifically, the description information receiving module 21 is after the media description information is received, the quality information Generation module 22 to the server 1 can ask one of which code check according to current network state and the media description information Corresponding video flowing segmentation, and continue in the period at lower a moment according to the corresponding video flowing segmentation of the network state at lower a moment request. For example, have the second video flowing of 3 kinds of code checks in the server 1, and second video flowing of this 3 kinds of code checks is respectively that high definition is regarded Frequently, normal video, low clear video, if current network state is not fine, the quality information generation module 22 is according to institute The video flowing segmentation indicated by the quality information in media description information is stated, is low clear video to the server 1 request code check The second video flowing corresponding to video flowing segmentation；If the network state at lower a moment very well, code check is asked to the server 1 For the next section of video flowing segmentation corresponding to the second video flowing of HD video.
The video flowing segmentation for being asked the video playback client 2 in the server 1 is sent to the video and broadcast Put after client 2, the quality information generation module 22 is believed according to each video flowing segmentation received and the media description The quality information of breath the first video flowing of generation.Wherein, first video flowing is got by the video playback client 2 Video flowing is segmented constituted video flowing, i.e., the quality information of described first video flowing is connect by the video playback client 2 The quality information of each video flowing segmentation received integrates what is determined.
Therefore, the embodiment of the present invention by media description information by being sent to video playback client 2 so that video The quality information that client end of playing back 2 can be segmented according to video flowing in media description information estimates the institute of video playback client 2 The quality of video is played, so that realization that can be inexpensive in the case where not needing transmission impairment video data to server 1 Assessment to video quality, makes video quality assessment process become quick, effective.
Figure 11 is referred to again, is the structural representation of another video playback client 2 provided in an embodiment of the present invention, institute Description information receiving module 21, the quality information that stating video playback client 2 can be included in above-mentioned Figure 10 correspondence embodiments are given birth to Into module 22, further, the video playback client 2 can also include：Play quality sending module 23, segmentation quality are sent Module 24；
The play quality sending module 23, for sending the quality information of first video flowing to the server 1；
The segmentation quality sending module 24, for sending segmentation quality information to the server 1, so that the service Device 1 generates the quality information of first video flowing according to the segmentation quality information and default quality evaluation formula；
Specifically, the segmentation quality information includes the video flowing segmentation accessed by the video playback client 2 The relative mass information of video flowing segmentation accessed by quality information, the video playback client 2, for identifying described regard At least one of identification information of video flowing segmentation accessed by frequency client end of playing back 2.Mould is sent in the segmentation quality Block 24 send segmentation quality information arrive the server 1 after, the server 1 can according to it is described be segmented quality information in The quality information of video flowing segmentation accessed by the video playback client 2 and default quality evaluation formula generation institute State the quality information of the first video flowing；Or, the server 1 can be broadcast according to the video in the segmentation quality information The relative mass information and default quality evaluation formula for putting the video flowing segmentation accessed by client 2 generate described first The quality information of video flowing；Or, the server 1 can also be used to identify institute according in the segmentation quality information The identification information of the video flowing segmentation accessed by video playback client 2 is stated, is searched acquired in the video playback client 2 The quality information or relative mass information for the video flowing segmentation arrived, further according to the quality information and default quality found The quality information that formula generates first video flowing is assessed, or according to the relative mass information found and default matter Amount assesses the quality information that formula generates first video flowing.
Further, then Figure 12 is referred to, is Figure 10 or the structural representation of quality information generation module 22 in Figure 11, The quality information generation module 22 can include：First extraction unit 221, the first mass generation unit 222, second are extracted single First 223, second mass generation unit 224；
First extraction unit 221, for being segmented according to each video flowing played, from the media description information It is middle to extract corresponding quality information；
The first mass generation unit 222, for according to the quality information and default quality evaluation formula extracted Generate the quality information of the first video flowing；
Specifically, first extraction unit 221 is segmented according to the video flowing got, from the media description information Extract corresponding quality information；The quality that the first mass generation unit 222 is extracted according to first extraction unit 221 Information and default quality evaluation formula generate the quality information of the first video flowing.Wherein, the quality evaluation formula can root Set according to video quality assessment algorithm, the main calculating parameter in the quality evaluation formula can include and the video playback Each video flowing received by client 2 is segmented average value, maximum, minimum value and the standard deviation of corresponding quality information Value.If the quality information is PSNR information, the quality evaluation formula can be：
Qv=a × Mean (PSNR)+b × Min (PSNR)+c × Max (PSNR)+d × Std (PSNR)
Wherein, the Mean (PSNR) is each video flowing segmentation pair received according to the video playback client 2 The average value that the quality information answered is calculated, the Min (PSNR) is each video that the video playback client 2 is received The minimum PSNR of numerical value in the corresponding quality information of flow point section, the Max (PSNR) is that the video playback client 2 is received Each video flowing be segmented the maximum PSNR of numerical value in corresponding quality information, the Std (PSNR) is broadcasts according to the video Put each video flowing that client 2 receives and be segmented the standard deviation that corresponding quality information is calculated, wherein a, b, c, d is calculates The design factor of method.
In reality, general networking state all has fluctuation, thus play DASH videos when code check be also with Fluctuation, therefore according to the quality evaluation formula generate the first video flowing quality information, not only can be with average PSNR Or average SSIM is relevant, but also with worst section in video, the bounce in best section and video stage casing it is relevant so that described the The quality information of one video flowing can be more accurate.
Second extraction unit 223, for according to the video flowing segmentation got, being carried from the media description information Take or calculate corresponding relative mass information；
The second mass generation unit 224, for according to the relative mass information and default matter extracted or calculated Amount assesses the quality information that formula generates the first video flowing；
Specifically, second extraction unit 223 is segmented according to the video flowing got, from the media description information Extract or calculate corresponding relative mass information；The second mass generation unit 224 is according to second extraction unit 223 The relative mass information extracted or calculated and default quality evaluation formula generate the quality information of the first video flowing.Wherein, The quality evaluation formula can be set according to video quality assessment algorithm, the main calculating parameter in the quality evaluation formula Each video flowing received by the video playback client 2 can be included and be segmented being averaged for corresponding relative mass information Value, maximum, minimum value and standard deviation.If the quality information is PSNR information, the video playback client is set The quality information for the video flowing segmentation that end 2 is received is PSNR, the quality letter of video flowing segmentation corresponding with the reference video stream Cease for PSNRref, relative mass information dPSNR=PSNR-PSNRref, the quality evaluation formula can be：
Qv=a × Mean (dPSNR)+b × Min (dPSNR)+c × Max (dPSNR)+d × Std (dPSNR)
Wherein, the Mean (dPSNR) is each video flowing segmentation pair received according to the video playback client 2 The average value that the relative mass information answered is calculated, the Min (dPSNR) be the video playback client 2 receive it is every Individual video flowing is segmented the minimum dPSNR of numerical value in corresponding relative mass information, and the Max (dPSNR) is the video playback Each video flowing that client 2 is received is segmented numerical value maximum dPSNR, the Std in corresponding relative mass information (dPSNR) it is that each video flowing received according to the video playback client 2 is segmented corresponding relative mass information calculating The standard deviation gone out, wherein a, b, c, d is the design factor of algorithm.
In reality, general networking state all has fluctuation, so the code check that DASH plays video is also ripple therewith It is dynamic, therefore the quality information of the first video flowing generated according to the quality evaluation formula, not only can with average PSNR or Average SSIM is relevant, but also with worst section in video, the bounce in best section and video stage casing it is relevant so that the generated The quality information of one video flowing can be more accurate.Estimated based on the quality evaluation formula and using relative mass information Video quality can be reduced due to the influence of video different content, and the deviation for video quality estimation produced, so adopting The video quality estimated with relative mass information can be more accurate than the video quality directly estimated using quality information.
Therefore, the embodiment of the present invention by media description information by being sent to video playback client 2 so that video The quality information that client end of playing back 2 can be segmented according to video flowing in media description information estimates the institute of video playback client 2 The quality of video is played, so that realization that can be inexpensive in the case where not needing transmission impairment video data to server 1 Assessment to video quality, makes video quality assessment process become quick, effective.
Figure 13 is referred to, is a kind of structural representation of assessment equipment 3 provided in an embodiment of the present invention, the assessment equipment 3 can include：Data obtaining module 31, Quality Calculation Module 32；
Described information acquisition module 31, for obtaining and the video flowing corresponding quality information of segmentation or relative mass information；
The Quality Calculation Module 32, for based on default quality evaluation formula, and according to quality information or relative matter Measure the video quality that information calculates video flowing；
Arrived specifically, the quality information in described information acquisition module 31 is the content obtaining being segmented according to video flowing Information；The relative mass information is the matter according to the quality information and video flowing corresponding with reference video stream segmentation Amount information is generated；Wherein, the reference video stream is selected in the video flowing of at least one code check.
The quality information in described information acquisition module 31 at least includes video quality or video that video flowing is segmented The video quality grade of flow point section, the video quality grade of the video flowing segmentation is the video matter being segmented according to the video flowing What amount was divided；
For example, the video quality of video flowing segmentation has the quality of 5 kinds of different numerical value, then, the video matter of video flowing segmentation Amount grade can be divided into 5 grades according to the size order of mass figures.
The relative mass information in described information acquisition module 31 include the relative video quality that video flowing is segmented or The relative video credit rating of video flowing segmentation, the relative video credit rating of the video flowing segmentation is according to the video flowing What the relative video quality of segmentation was divided.
Wherein, the calculating parameter in the default quality evaluation formula in the Quality Calculation Module 32 includes：Matter Measure at least one of information average value, quality information variance, quality information change frequency；Or, relative mass information is averaged At least one of value, relative mass information variance, relative mass information change frequency.
The quality information average value can include the average value for the video quality that each video flowing is segmented, or each is regarded The average value of the video quality grade of frequency flow point section；The quality information variance can include the video matter that each video flowing is segmented The variance of amount, or each video flowing segmentation video quality grade variance；The relative mass information average value can be wrapped Include the average value of the relative video quality of each video flowing segmentation, or the segmentation of each video flowing relative video credit rating Average value；The relative mass information variance can include the variance for the relative video quality that each video flowing is segmented, or respectively The variance of the relative video credit rating of individual video flowing segmentation.
The quality information change frequency or the relative mass information change frequency include：It is segmented according to the video flowing The frequency that change frequency and the corresponding reproduction time of the video flowing in quality are calculated；
For example, the video flowing received by some video playback client 2 is segmented in the corresponding broadcasting of the video flowing In, mass change number of times is 20 times, and the reproduction time is 200 seconds, then, the frequency in the reproduction time is 0.1 Secondary/second.
Or, the quality information change frequency or the relative mass information change frequency include：According to the video The change frequency that video flowing in stream in multiple periods is segmented in quality is calculated and multiple periods in the video flowing The corresponding frequency of difference；
For example, video flowing is divided into 3 periods, each period is 100 seconds, the video flowing within first period It is 15 times to be segmented the change frequency in quality, and the change frequency that the video flowing within second period is segmented in quality is 25 times, the change frequency that the video flowing within the 3rd period is segmented in quality is 10 times, then these three periods point Not corresponding frequency is 0.15 time/second, 0.25 time/second, 0.1 time/second.
Or, the quality information change frequency or the relative mass information change frequency include：According to the video Flow multiple periods calculate in corresponding reproduction time or the video flowing increased quality frequency and/or Quality Down frequency Rate；
Increased quality frequency be specifically according in the corresponding reproduction time of the video flowing or in the video flowing certain The increased quality number of times of video flowing segmentation in the individual period calculates what is obtained；Quality Down frequency is specifically according to described The Quality Down number of times of video flowing segmentation in the corresponding reproduction time of video flowing or in the video flowing in some period Calculate what is obtained.
Or, the quality information change frequency or the relative mass information change frequency include：The video flow point The change frequency of section quality in multiple periods in the corresponding reproduction time of the video flowing or the video flowing.
Or, the quality information change frequency or the relative mass information change frequency include：The video flow point The lifting number of times and/or quality of section quality in multiple periods in the corresponding reproduction time of the video flowing or the video flowing Decline number of times.
The lifting number of times of the quality be in the corresponding reproduction time of the video flowing or in the video flowing some The increased quality number of times of video flowing segmentation in period；The decline number of times of the quality is broadcasting corresponding in the video flowing The Quality Down number of times of video flowing segmentation in time or in the video flowing in some period.
Wherein, the quality information change frequency or the relative mass information change frequency are according in the video flowing Change frequency average value that multiple periods are calculated, change frequency standard deviation, change frequency maximum, change frequency are minimum At least one of value；
Specifically, according to multiple periods in the video flowing respectively corresponding frequency can calculate change frequency put down Average, change frequency standard deviation, change frequency maximum, change frequency minimum value；Or, according to it is multiple in the video flowing Period, corresponding increased quality frequency or Quality Down frequency can calculate change frequency average value, change frequency mark respectively Accurate poor, change frequency maximum, change frequency minimum value；Or, according to corresponding respectively with multiple periods in the video flowing The lifting number of times of quality or the decline number of times of quality can calculate change frequency average value, change frequency standard deviation, change Frequency maxima, change frequency minimum value.
Wherein, the change frequency is to be segmented each change in quality according to the video flowing to count what is obtained, The change being either segmented according to the video flowing in quality counts what is obtained when exceeding change threshold.For example, can be pre- One change threshold is first set, and when the mass change amplitude that video flowing is segmented exceedes or reaches change threshold, then meter is done once The mass change of video flowing segmentation.When the mass change amplitude that video flowing is segmented exceedes, less than average video quality, and change is reached When changing threshold value, then meter does the mass change of primary video flow point section.Certainly, the decline number of times and the lifting number of times of quality of quality It can be counted by the change threshold.
The assessment equipment 3 can be any assessment equipment 3 in network, it might even be possible to be video server in itself；Example Such as, the assessment equipment 3 can be mobile terminal, base station, equipment of the core network, and video server etc..
Therefore, the embodiment of the present invention can be calculated accurately by the average value of video quality, variance, jumping frequency rate Video quality.
The embodiment of the present invention additionally provides a kind of computer-readable storage medium, wherein, the computer-readable storage medium can be stored There is program, the portion of the method including the assessment video quality described in above-mentioned Fig. 1 to Fig. 2 embodiment of the method when the program is performed Divide or Overall Steps.
The embodiment of the present invention additionally provides another computer-readable storage medium, wherein, the computer-readable storage medium can be deposited Program is contained, the method including the assessment video quality described in above-mentioned Fig. 3 to Fig. 4 embodiment of the method when the program is performed Part or all of step.
The embodiment of the present invention additionally provides another computer-readable storage medium, wherein, the computer-readable storage medium can be deposited Program is contained, the part of the method for the assessment video quality when program is performed described in the embodiment of the method including above-mentioned Fig. 5 Or Overall Steps.
Figure 14 is referred to, is the structural representation of another server 1 provided in an embodiment of the present invention, the server 1 Processor 1001, communication interface 1002 and memory 1003 can be included, and (quantity of the processor 1001 in server 1 can be It is one or more, in Figure 14 by taking a processor 1001 as an example).In some embodiments of the present invention, processor 1001, communication connect Mouthfuls 1002 and memory 1003 can be connected by communication bus or other modes, wherein, Figure 14 by communication bus to be connected as Example.
Wherein, the communication interface 1002, for being communicated with video playback client；
The memory 1003 is used for storage program；
The processor 1001 is used to perform described program, to realize
The quality information that the content obtaining video flowing being segmented according to video flowing is segmented；
The quality information being segmented according to the video flowing generates media description information；
The media description information is sent to video playback client, so that the video playback client is according to described The quality information of media description information and video flowing segmentation the first video flowing of generation got；
Wherein, what the video flowing segmentation that first video flowing is got by the video playback client was constituted regards Frequency flows.
Wherein, the processor 1001 is additionally operable to：
The original video stream got is encoded to the second video flowing of at least one code check；
Second video flowing of at least one code check is divided into the segmentation of at least two video flowings.
Wherein, the processor 1001 specifically for：
One of which video flowing is selected to be used as reference video stream in the second video flowing of at least one code check；
According to video flowing corresponding with the second video flowing of at least one code check be segmented quality information and with institute State the quality information generation media description information of the corresponding video flowing segmentation of reference video stream.
Wherein, the media description information includes：
The quality information of video flowing segmentation corresponding with the second video flowing of at least one code check；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and with the ginseng Examine the quality information of the corresponding video flowing segmentation of video flowing；Or,
The relative mass information of video flowing segmentation corresponding with the second video flowing of at least one code check, it is described relative Quality information be by video flowing corresponding with the second video flowing of at least one code check be segmented quality information and with institute State the information that the quality information of the corresponding video flowing segmentation of reference video stream is generated；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and for identifying The identification information of the quality information of video flowing segmentation corresponding with the reference video stream.
Wherein, the processor 1001 is additionally operable to：
Receive the quality information for first video flowing that the video playback client is sent.
Wherein, the processor 1001 is additionally operable to：
The segmentation quality information that the video playback client is sent is received, the segmentation quality information includes the video Quality information, the video flow point accessed by the video playback client of video flowing segmentation accessed by client end of playing back In the relative mass information of section, the identification information for identifying the video flowing segmentation accessed by the video playback client It is at least one；
The quality information of first video flowing is generated according to the segmentation quality information and default quality evaluation formula.
Therefore, the embodiment of the present invention by media description information by being sent to video playback client so that video The quality information that client end of playing back can be segmented according to video flowing in media description information estimates video playback client and broadcast The quality of video is put, so that realization pair that can be inexpensive in the case where not needing transmission impairment video data to server 1 The assessment of video quality, makes video quality assessment process become quick, effective.
Figure 15 is referred to, is the structural representation of another video playback client 2 provided in an embodiment of the present invention, it is described Video playback client 2 can include processor 2001, communication interface 2002 and memory 2003 (in video playback client 2 The quantity of processor 2001 can be to be one or more, in Figure 15 by taking a processor 2001 as an example).Some realities of the present invention Apply in example, processor 2001, communication interface 2002 and memory 2003 can be connected by communication bus or other modes, wherein, Figure 15 by communication bus exemplified by being connected.
Wherein, the communication interface 2002, for being communicated with server；
The memory 2003 is used for storage program；
The processor 2001 is used to perform described program, to realize
The media description information that the reception server is sent, the media description information is according to video flowing by the server The information that the quality information of segmentation is generated；
According to the media description information and the quality information of the video flowing got segmentation the first video flowing of generation；
Wherein, what the video flowing segmentation that first video flowing is got by the video playback client 2 was constituted Video flowing.
Wherein, the video flowing segmentation is obtained by the second video flowing of at least one code check of server segmentation 's；
Second video flowing of at least one code check is to be compiled the original video stream got by the server Video flowing obtained by code.
Wherein, when the media description information be the quality information that is segmented by the server according to video flowing and with ginseng When examining the information that the quality information of video flowing corresponding video flowing segmentation is generated, the media description information is specifically included：
The quality information of video flowing segmentation corresponding with the second video flowing of at least one code check；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and with the ginseng Examine the quality information of the corresponding video flowing segmentation of video flowing；Or,
The relative mass information of video flowing segmentation corresponding with the second video flowing of at least one code check, it is described relative Quality information be by video flowing corresponding with the second video flowing of at least one code check be segmented quality information and with institute State the information that the quality information of the corresponding video flowing segmentation of reference video stream is generated；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and for identifying The identification information of the quality information of video flowing segmentation corresponding with the reference video stream；
Wherein, the reference video stream is selected in second video flowing of the server at least one code check The video flowing gone out.
Wherein, the processor 2001 specifically for：
According to the video flowing segmentation got, corresponding quality information is extracted from the media description information；
The quality information of the first video flowing is generated according to the quality information extracted and default quality evaluation formula.
Wherein, the processor 2001 specifically for：
According to the video flowing segmentation got, corresponding relative mass is extracted or calculated from the media description information Information；
The matter of the first video flowing is generated according to the relative mass information extracted or calculated and default quality evaluation formula Measure information.
Wherein, the processor 2001 is additionally operable to：
The quality information of first video flowing is sent to the server.
Wherein, the processor 2001 is additionally operable to：
Segmentation quality information is sent to the server, so that the server is according to the segmentation quality information and presets Quality evaluation formula generate the quality information of first video flowing；
Wherein, the segmentation quality information includes the matter of the video flowing segmentation accessed by the video playback client 2 Measure information, the relative mass information of video flowing segmentation accessed by the video playback client 2, for identifying the video At least one of identification information of video flowing segmentation accessed by client end of playing back 2.
Therefore, the embodiment of the present invention by media description information by being sent to video playback client 2 so that video The quality information that client end of playing back 2 can be segmented according to video flowing in media description information estimates the institute of video playback client 2 The quality of video is played, so that realization pair that can be inexpensive in the case where not needing transmission impairment video data to server The assessment of video quality, makes video quality assessment process become quick, effective.
Figure 16 is referred to again, is the structural representation of another assessment equipment provided in an embodiment of the present invention, the assessment Equipment can include processor 3001, memory 3002, and (quantity of the processor 3001 in assessment equipment can be one or many It is individual, in Figure 16 by taking a processor 3001 as an example).In some embodiments of the present invention, processor 3001, memory 3002 can lead to Communication bus or other modes connection are crossed, wherein, Figure 16 by communication bus exemplified by being connected.
Wherein, the memory is used for storage program；
The processor 3001 is used to perform described program, to realize
Obtain and the video flowing corresponding quality information of segmentation or relative mass information；
Based on default quality evaluation formula, and according to the video matter of quality information or relative mass information calculating video flowing Amount；
The video flowing is segmented the video flowing constituted by video flowing.
Wherein, the quality information at least includes the video quality of video flowing segmentation or the video quality of video flowing segmentation etc. Level, the video quality grade of the video flowing segmentation is that the video quality being segmented according to the video flowing is divided；
The relative mass information includes the relative video quality of video flowing segmentation or the relative video matter of video flowing segmentation Grade is measured, the relative video credit rating of the video flowing segmentation is that the relative video quality being segmented according to the video flowing is carried out Divide.
Wherein, the calculating parameter in the default quality evaluation formula includes：
At least one of quality information average value, quality information variance, quality information change frequency；Or,
At least one of relative mass information average value, relative mass information variance, relative mass information change frequency.
Wherein, the quality information change frequency or the relative mass information change frequency include：According to the video The frequency that change frequency and the video flowing corresponding reproduction time of the flow point section in quality are calculated；Or,
The quality information change frequency or the relative mass information change frequency include：According to many in the video flowing It is right respectively with multiple periods in the video flowing that the change frequency that video flowing in the individual period is segmented in quality is calculated The frequency answered；Or,
The quality information change frequency or the relative mass information change frequency include：According to video flowing correspondence Reproduction time or the video flowing in multiple periods the increased quality frequency and/or Quality Down frequency that calculate；Or,
The quality information change frequency or the relative mass information change frequency include：The video flowing segmentation is in institute State the change frequency of quality in multiple periods in the corresponding reproduction time of video flowing or the video flowing；Or,
The quality information change frequency or the relative mass information change frequency include：The video flowing segmentation is in institute State the lifting number of times of quality and/or the decline of quality in multiple periods in the corresponding reproduction time of video flowing or the video flowing Number of times.
Wherein, the quality information change frequency or the relative mass information change frequency are according in the video flowing Change frequency average value that multiple periods are calculated, change frequency standard deviation, change frequency maximum, change frequency are minimum At least one of value；
Wherein, the change frequency is to be segmented each change in quality according to the video flowing to count what is obtained, The change being either segmented according to the video flowing in quality counts what is obtained when exceeding change threshold.
Wherein, the quality information is the information that the content obtaining being segmented according to video flowing is arrived；
The relative mass information is according to the quality information and video flowing corresponding with reference video stream segmentation What quality information was generated；
Wherein, the reference video stream is selected in the video flowing of at least one code check.
Therefore, the embodiment of the present invention can be calculated accurately by the average value of video quality, variance, jumping frequency rate Video quality.
One of ordinary skill in the art will appreciate that realize all or part of flow in above-described embodiment method, being can be with The hardware of correlation is instructed to complete by computer program, described program can be stored in a computer read/write memory medium In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access Memory, RAM) etc..
Above disclosure is only preferred embodiment of present invention, can not limit the right model of the present invention with this certainly Enclose, therefore the equivalent variations made according to the claims in the present invention, still belong to the scope that the present invention is covered.

Claims (36)

1. a kind of method for assessing video quality, it is characterised in that including：
The quality information that the content obtaining video flowing that server is segmented according to video flowing is segmented；
The quality information that the server is segmented according to the video flowing generates media description information；
The media description information is sent to video playback client by the server, so that the video playback client root According to the media description information and the quality information of the video flowing got segmentation the first video flowing of generation；
Wherein, the video flowing that first video flowing is got by the video playback client is segmented constituted video Stream；
Wherein, the video flowing segmentation in the server is the second video flowing institute for splitting at least one code check by the server Obtain；Each video flowing segmentation that the video playback client is got is according to right by the video playback client The network state and the media description information at moment is answered to ask what is obtained to the server.
2. the method as described in claim 1, it is characterised in that the content obtaining being segmented in the server according to video flowing is regarded Before the step of quality information of frequency flow point section, in addition to：
The original video stream got is encoded to the second video flowing of at least one code check by the server；
Second video flowing of at least one code check is divided into the segmentation of at least two video flowings by the server.
3. method as claimed in claim 2, it is characterised in that the quality information that the server is segmented according to the video flowing Media description information is generated, including：
The server selects one of which video flowing to be used as reference video in the second video flowing of at least one code check Stream；
The quality information that the server is segmented according to video flowing corresponding with the second video flowing of at least one code check with And the quality information generation media description information of video flowing segmentation corresponding with the reference video stream.
4. method as claimed in claim 3, it is characterised in that the media description information includes：
The quality information of video flowing segmentation corresponding with the second video flowing of at least one code check；Or,
Quality information and regarded with the reference that video flowing corresponding with the second video flowing of at least one code check is segmented Frequency flows the quality information of corresponding video flowing segmentation；Or,
The relative mass information of video flowing segmentation corresponding with the second video flowing of at least one code check, the relative mass Information be by video flowing corresponding with the second video flowing of at least one code check be segmented quality information and with the ginseng Examine the information that the quality information of the corresponding video flowing segmentation of video flowing is generated；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and for identifying and institute State the identification information of the quality information of the corresponding video flowing segmentation of reference video stream.
5. the method as described in any one of Claims 1-4, it is characterised in that also include：
The server receives the quality information for first video flowing that the video playback client is sent.
6. a kind of method for assessing video quality, it is characterised in that including：
The media description information that video playback client the reception server is sent, the media description information is by the server The information that the quality information being segmented according to video flowing is generated；
The video playback client is according to the media description information and the video flowing got segmentation the first video of generation The quality information of stream；
Wherein, the video flowing that first video flowing is got by the video playback client is segmented constituted video Stream；
Wherein, the video flowing segmentation in the server is the second video flowing institute for splitting at least one code check by the server Obtain；Each video flowing segmentation that the video playback client is got is according to right by the video playback client The network state and the media description information at moment is answered to ask what is obtained to the server.
7. method as claimed in claim 6, it is characterised in that
Second video flowing of at least one code check is that the original video stream got is carried out into coding institute by the server Obtained video flowing.
8. method as claimed in claim 7, it is characterised in that when the media description information is according to regarding by the server During the information that the quality information of frequency flow point section and the quality information of video flowing corresponding with reference video stream segmentation are generated, institute Media description information is stated to specifically include：
The quality information of video flowing segmentation corresponding with the second video flowing of at least one code check；Or,
Quality information and regarded with the reference that video flowing corresponding with the second video flowing of at least one code check is segmented Frequency flows the quality information of corresponding video flowing segmentation；Or,
The relative mass information of video flowing segmentation corresponding with the second video flowing of at least one code check, the relative mass Information be by video flowing corresponding with the second video flowing of at least one code check be segmented quality information and with the ginseng Examine the information that the quality information of the corresponding video flowing segmentation of video flowing is generated；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and for identifying and institute State the identification information of the quality information of the corresponding video flowing segmentation of reference video stream；
Wherein, the reference video stream is selected in second video flowing of the server at least one code check Video flowing.
9. the method as described in any one of claim 6 to 8, it is characterised in that the video playback client is according to the matchmaker The quality information of body description information and video flowing segmentation the first video flowing of generation got, including：
The video playback client is segmented according to the video flowing got, and corresponding matter is extracted from the media description information Measure information；
The video playback client generates the first video flowing according to the quality information extracted and default quality evaluation formula Quality information.
10. method as claimed in claim 8, it is characterised in that the video playback client is believed according to the media description The video flowing for ceasing and getting is segmented the quality information for generating the first video flowing, including：
The video playback client is segmented according to the video flowing got, is extracted or is calculated from the media description information Corresponding relative mass information；
The video playback client is generated according to the relative mass information extracted or calculated and default quality evaluation formula The quality information of first video flowing.
11. method as claimed in claim 6, it is characterised in that also include：
The video playback client sends the quality information of first video flowing to the server.
12. method as claimed in claim 10, it is characterised in that also include：
The video playback client sends segmentation quality information to the server, so that the server is according to the segmentation Quality information and default quality evaluation formula generate the quality information of first video flowing；
Wherein, the segmentation quality information includes the quality letter of the video flowing segmentation accessed by the video playback client Breath, the relative mass information of video flowing segmentation accessed by the video playback client, for identifying the video playback At least one of identification information of video flowing segmentation accessed by client.
13. a kind of method for assessing video quality, it is characterised in that including：
Obtain quality information corresponding with the multiple video flowings segmentation difference asked or relative mass information；
Based on default quality evaluation formula, and according to quality information or the video quality of relative mass information calculating video flowing；
The video flowing that the video flowing is made up of the multiple video flowings segmentation asked；
Wherein, the multiple video flowings segmentation asked is network state and matchmaker by video playback client according to each moment Body description information to server request obtain described in each moment distinguish corresponding video flowing and be segmented；Regarding in the server Frequency flow point section is obtained by the second video flowing of at least one code check of server segmentation.
14. method as claimed in claim 13, it is characterised in that
The quality information at least includes the video quality of video flowing segmentation or the video quality grade of video flowing segmentation, described to regard The video quality grade of frequency flow point section is that the video quality being segmented according to the video flowing is divided；
The relative mass information includes the relative video quality of video flowing segmentation or the relative video quality of video flowing segmentation etc. Level, the relative video credit rating of the video flowing segmentation is that the relative video quality being segmented according to the video flowing is divided 's.
15. method as claimed in claim 13, it is characterised in that
Calculating parameter in the default quality evaluation formula includes：
At least one of quality information average value, quality information variance, quality information change frequency；Or,
At least one of relative mass information average value, relative mass information variance, relative mass information change frequency.
16. method as claimed in claim 15, it is characterised in that
The quality information change frequency or the relative mass information change frequency include：According to video flowing segmentation in matter The frequency that change frequency and the corresponding reproduction time of the video flowing in amount are calculated；Or,
The quality information change frequency or the relative mass information change frequency include：According to it is multiple in the video flowing when Between the change frequency that is segmented in quality of video flowing in section calculate it is corresponding with multiple period difference in the video flowing Frequency；Or,
The quality information change frequency or the relative mass information change frequency include：Broadcast according to the video flowing is corresponding Put increased quality frequency and/or Quality Down frequency that multiple periods in time or the video flowing calculate；Or,
The quality information change frequency or the relative mass information change frequency include：The video flowing segmentation is regarded described Frequency flows the change frequency of quality in multiple periods in corresponding reproduction time or the video flowing；Or,
The quality information change frequency or the relative mass information change frequency include：The video flowing segmentation is regarded described Frequency flows the decline time of the lifting number of times of quality and/or quality in multiple periods in corresponding reproduction time or the video flowing Number.
17. method as claimed in claim 16, it is characterised in that
The quality information change frequency or the relative mass information change frequency are according to multiple times in the video flowing Change frequency average value that section is calculated, change frequency standard deviation, change frequency maximum, in change frequency minimum value extremely Few one kind；
Wherein, the change frequency is to be segmented each change in quality according to the video flowing to count what is obtained, or It is that the change being segmented according to the video flowing in quality counts what is obtained when exceeding change threshold.
18. the method as described in any one of claim 13 to 17, it is characterised in that
The quality information is the information that the content obtaining being segmented according to video flowing is arrived；
The relative mass information is the quality according to the quality information and video flowing corresponding with reference video stream segmentation What information was generated；
Wherein, the reference video stream is selected in the video flowing of at least one code check.
19. a kind of server, it is characterised in that including：
Acquisition module, the quality information that the content obtaining video flowing for being segmented according to video flowing is segmented；
First generation module, the quality information for being segmented according to the video flowing generates media description information；
Description information sending module, for the media description information to be sent into video playback client, so that the video Client end of playing back generates the quality information of the first video flowing according to the media description information and the video flowing got segmentation；
Wherein, the video flowing that first video flowing is got by the video playback client is segmented constituted video Stream；
Wherein, the video flowing segmentation in the server is the second video flowing institute for splitting at least one code check by the server Obtain；Each video flowing segmentation that the video playback client is got is according to right by the video playback client The network state and the media description information at moment is answered to ask what is obtained to the server.
20. server as claimed in claim 19, it is characterised in that also include：
Coding module, the second video flowing for the original video stream got to be encoded to at least one code check；
Split module, for the second video flowing of at least one code check to be divided into the segmentation of at least two video flowings.
21. server as claimed in claim 20, it is characterised in that first generation module includes：
With reference to selecting unit, for selecting one of which video flowing to be used as ginseng in the second video flowing of at least one code check Examine video flowing；
Information generating unit, for the quality being segmented according to video flowing corresponding with the second video flowing of at least one code check Information and the quality information generation media description information of video flowing corresponding with reference video stream segmentation.
22. server as claimed in claim 21, it is characterised in that the media that described information generation unit is generated are retouched Stating information includes：
The quality information of video flowing segmentation corresponding with the second video flowing of at least one code check；Or,
Quality information and regarded with the reference that video flowing corresponding with the second video flowing of at least one code check is segmented Frequency flows the quality information of corresponding video flowing segmentation；Or,
The relative mass information of video flowing segmentation corresponding with the second video flowing of at least one code check, the relative mass Information be by video flowing corresponding with the second video flowing of at least one code check be segmented quality information and with the ginseng Examine the information that the quality information of the corresponding video flowing segmentation of video flowing is generated；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and for identifying and institute State the identification information of the quality information of the corresponding video flowing segmentation of reference video stream.
23. the server as described in any one of claim 19 to 22, it is characterised in that also include：
Play quality receiving module, the quality letter for receiving first video flowing that the video playback client is sent Breath.
24. a kind of video playback client, it is characterised in that including：
Description information receiving module, the media description information sent for the reception server, the media description information is by institute State the information that the quality information that server is segmented according to video flowing is generated；
Quality information generation module, for being regarded according to the media description information and the video flowing got segmentation generation first The quality information of frequency stream；
Wherein, the video flowing that first video flowing is got by the video playback client is segmented constituted video Stream；
Wherein, the video flowing segmentation in the server is the second video flowing institute for splitting at least one code check by the server Obtain；Each video flowing segmentation that the video playback client is got is according to right by the video playback client The network state and the media description information at moment is answered to ask what is obtained to the server.
25. video playback client as claimed in claim 24, it is characterised in that
Second video flowing of at least one code check is that the original video stream got is carried out into coding institute by the server Obtained video flowing.
26. video playback client as claimed in claim 25, it is characterised in that when the description information receiving module is connect The media description information received is the quality information and and reference video stream being segmented by the server according to video flowing During the information that the quality information of corresponding video flowing segmentation is generated, the media description information is specifically included：
The quality information of video flowing segmentation corresponding with the second video flowing of at least one code check；Or,
Quality information and regarded with the reference that video flowing corresponding with the second video flowing of at least one code check is segmented Frequency flows the quality information of corresponding video flowing segmentation；Or,
The relative mass information of video flowing segmentation corresponding with the second video flowing of at least one code check, the relative mass Information be by video flowing corresponding with the second video flowing of at least one code check be segmented quality information and with the ginseng Examine the information that the quality information of the corresponding video flowing segmentation of video flowing is generated；Or,
The quality information of corresponding with the second video flowing of at least one code check video flowing segmentation and for identifying and institute State the identification information of the quality information of the corresponding video flowing segmentation of reference video stream；
Wherein, the reference video stream is selected in second video flowing of the server at least one code check Video flowing.
27. the video playback client as described in any one of claim 24 to 26, it is characterised in that the quality information generation Module includes：
First extraction unit, for being segmented according to each video flowing played, extracts correspondence from the media description information Quality information；
First mass generation unit, for generating the first video according to the quality information and default quality evaluation formula that extract The quality information of stream.
28. video playback client as claimed in claim 26, it is characterised in that the quality information generation module includes：
Second extraction unit, for according to the video flowing segmentation got, extracting or calculating from the media description information Corresponding relative mass information；
Second mass generation unit, for according to the relative mass information extracted or calculated and the life of default quality evaluation formula Into the quality information of the first video flowing.
29. video playback client as claimed in claim 24, it is characterised in that also include：
Play quality sending module, for sending the quality information of first video flowing to the server.
30. video playback client as claimed in claim 28, it is characterised in that also include：
Quality sending module is segmented, for sending segmentation quality information to the server, so that the server is according to described It is segmented quality information and default quality evaluation formula generates the quality information of first video flowing；
Wherein, the segmentation quality information includes the quality letter of the video flowing segmentation accessed by the video playback client Breath, the relative mass information of video flowing segmentation accessed by the video playback client, for identifying the video playback At least one of identification information of video flowing segmentation accessed by client.
31. a kind of assessment equipment, it is characterised in that including：
Data obtaining module, for obtaining and the corresponding quality information of multiple video flowings segmentation difference asked or relative matter Measure information；
Quality Calculation Module, for being calculated based on default quality evaluation formula, and according to quality information or relative mass information The video quality of video flowing；
The video flowing that the video flowing is made up of the multiple video flowings segmentation asked；
Wherein, the multiple video flowings segmentation asked is network state and matchmaker by video playback client according to each moment Body description information to server request obtain described in each moment distinguish corresponding video flowing and be segmented；Regarding in the server Frequency flow point section is obtained by the second video flowing of at least one code check of server segmentation.
32. assessment equipment as claimed in claim 31, it is characterised in that
The quality information in described information acquisition module at least includes video quality or the video flowing segmentation that video flowing is segmented Video quality grade, the video quality grade of video flowing segmentation is that the video quality being segmented according to the video flowing is carried out Divide；
The relative mass information in described information acquisition module includes relative video quality or the video flowing that video flowing is segmented The relative video credit rating of segmentation, the relative video credit rating of the video flowing segmentation is segmented according to the video flowing Relative video quality is divided.
33. assessment equipment as claimed in claim 31, it is characterised in that
The calculating parameter in the default quality evaluation formula in the Quality Calculation Module includes：
At least one of quality information average value, quality information variance, quality information change frequency；Or,
At least one of relative mass information average value, relative mass information variance, relative mass information change frequency.
34. assessment equipment as claimed in claim 33, it is characterised in that
The quality information change frequency or the relative mass information change frequency include：According to video flowing segmentation in matter The frequency that change frequency and the corresponding reproduction time of the video flowing in amount are calculated；Or,
The quality information change frequency or the relative mass information change frequency include：According to it is multiple in the video flowing when Between the change frequency that is segmented in quality of video flowing in section calculate it is corresponding with multiple period difference in the video flowing Frequency；Or,
The quality information change frequency or the relative mass information change frequency include：Broadcast according to the video flowing is corresponding Put increased quality frequency and/or Quality Down frequency that multiple periods in time or the video flowing calculate；Or,
The quality information change frequency or the relative mass information change frequency include：The video flowing segmentation is regarded described Frequency flows the change frequency of quality in multiple periods in corresponding reproduction time or the video flowing；Or,
The quality information change frequency or the relative mass information change frequency include：The video flowing segmentation is regarded described Frequency flows the decline time of the lifting number of times of quality and/or quality in multiple periods in corresponding reproduction time or the video flowing Number.
35. assessment equipment as claimed in claim 34, it is characterised in that
The quality information change frequency or the relative mass information change frequency are according to multiple times in the video flowing Change frequency average value that section is calculated, change frequency standard deviation, change frequency maximum, in change frequency minimum value extremely Few one kind；
Wherein, the change frequency is to be segmented each change in quality according to the video flowing to count what is obtained, or It is that the change being segmented according to the video flowing in quality counts what is obtained when exceeding change threshold.
36. the assessment equipment as described in any one of claim 31 to 35, it is characterised in that
The quality information is the information that the content obtaining being segmented according to video flowing is arrived；
The relative mass information is the quality according to the quality information and video flowing corresponding with reference video stream segmentation What information was generated；
Wherein, the reference video stream is selected in the video flowing of at least one code check.
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