CN106792156A - Lift the method and device of Internet video definition - Google Patents

Lift the method and device of Internet video definition Download PDF

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Publication number
CN106792156A
CN106792156A CN201611126915.2A CN201611126915A CN106792156A CN 106792156 A CN106792156 A CN 106792156A CN 201611126915 A CN201611126915 A CN 201611126915A CN 106792156 A CN106792156 A CN 106792156A
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China
Prior art keywords
code check
coefficient
resolution ratio
internet video
penalty coefficient
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CN201611126915.2A
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Chinese (zh)
Inventor
张志标
何鹏
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Shenzhen TCL New Technology Co Ltd
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Shenzhen TCL New Technology Co Ltd
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Priority to CN201611126915.2A priority Critical patent/CN106792156A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4402Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • H04N21/440263Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the spatial resolution, e.g. for displaying on a connected PDA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4402Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • H04N21/440281Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the temporal resolution, e.g. by frame skipping
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/14Picture signal circuitry for video frequency region
    • H04N5/20Circuitry for controlling amplitude response
    • H04N5/205Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic
    • H04N5/208Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/14Picture signal circuitry for video frequency region
    • H04N5/21Circuitry for suppressing or minimising disturbance, e.g. moiré or halo

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

The present invention discloses a kind of method and device for lifting Internet video definition, and the method for the wherein lifting Internet video definition is comprised the following steps:The data of Internet video are received, decoding obtains the resolution ratio and code check of Internet video;According to the resolution ratio and code check of current network video, calculate the image quality penalty coefficient of current resolution respectively, and code check image quality penalty coefficient;The image quality penalty coefficient of image quality penalty coefficient and code check according to resolution ratio, adjusts the definition of Internet video.Technical solution of the present invention improves definition when Internet video is played.

Description

Lift the method and device of Internet video definition
Technical field
The present invention relates to technical field of video processing, more particularly to a kind of method and dress for lifting Internet video definition Put.
Background technology
The television set of current more and more families watches TV or video using network, and Internet video is due to the network bandwidth Limitation, (namely code check is very low) typically all compressed by height ratio, its image quality performance has with the TV signal of standard Larger difference.And current television set is primarily directed to the signal of radio and television for the treatment of image quality, image quality adjustment according to According to the resolution ratio for being film source, method of adjustment is as the increase of resolution ratio reduces noise reduction and reduces acutance.
This image quality adjustment process does not account for the adjustment of the code check of Internet video, so for high-resolution and low code The Internet video of rate, often causes fogging image because sinking is made an uproar.
The content of the invention
The main object of the present invention is to provide a kind of method for lifting Internet video definition, it is intended to improves Internet video and broadcasts Definition when putting.
To achieve the above object, the present invention proposes a kind of method for lifting Internet video definition, comprises the following steps:
The data of Internet video are received, decoding obtains the resolution ratio and code check of Internet video;
According to the resolution ratio and code check of current network video, the image quality penalty coefficient of current resolution is calculated respectively, and The image quality penalty coefficient of code check;
The image quality penalty coefficient of image quality penalty coefficient and code check according to the resolution ratio, adjusts the clear of Internet video Degree.
Preferably, the resolution ratio and code check according to current network video, calculates the image quality of current resolution respectively Penalty coefficient, and code check image quality penalty coefficient the step of include:
According to the resolution ratio and code check of current network video, default noise reduction function and acutance function are called, calculated respectively Go out the noise reduction penalty coefficient and acutance penalty coefficient of current resolution ratio, and noise reduction penalty coefficient and the acutance compensation of code check are Number.
Preferably, the image quality penalty coefficient and the image quality penalty coefficient of code check according to the resolution ratio, adjusts network The step of definition of video, includes:
Noise reduction penalty coefficient and acutance penalty coefficient according to current resolution ratio, and the noise reduction penalty coefficient of code check and sharp Degree penalty coefficient, noise reduction coefficient and acutance coefficient needed for being calculated adjustment Internet video definition, according to noise reduction coefficient and Acutance coefficient, adjusts the definition of Internet video.
Preferably, the image quality penalty coefficient and the image quality penalty coefficient of code check according to the resolution ratio, adjusts network The step of definition of video, further includes:
The specific gravity factor of specific gravity factor and code check according to resolution ratio, adjusts the definition of Internet video.
Preferably, the specific gravity factor sum of the specific gravity factor of the resolution ratio and code check is 1, the proportion system of the resolution ratio Several scopes is 0.6~0.8 and the scope of the specific gravity factor of the code check is 0.2~0.4.
Also a kind of device for lifting Internet video definition of the present invention, including:
Decoder module, the data for receiving Internet video, decoding obtains the resolution ratio and code check of Internet video;
Computing module, for resolution ratio and code check according to current network video, calculates the picture of current resolution respectively Matter penalty coefficient, and code check image quality penalty coefficient;
Adjusting module, for image quality penalty coefficient and the image quality penalty coefficient of code check according to the resolution ratio, adjusts net The definition of network video.
Preferably, the computing module specifically for:
According to the resolution ratio and code check of current network video, default noise reduction function and acutance function are called, calculated respectively Go out the noise reduction penalty coefficient and acutance penalty coefficient of current resolution ratio, and noise reduction penalty coefficient and the acutance compensation of code check are Number.
Preferably, the adjusting module specifically for:
Noise reduction penalty coefficient and acutance penalty coefficient according to current resolution ratio, and the noise reduction penalty coefficient of code check and sharp Degree penalty coefficient, noise reduction coefficient and acutance coefficient needed for being calculated adjustment Internet video definition, according to noise reduction coefficient and Acutance coefficient, adjusts the definition of Internet video.
Preferably, the adjusting module is additionally operable to:
The specific gravity factor of specific gravity factor and code check according to resolution ratio, adjusts the definition of Internet video.
Preferably, the specific gravity factor sum of the specific gravity factor of the resolution ratio and code check is 1, the proportion system of the resolution ratio Several scopes is 0.6~0.8 and the scope of the specific gravity factor of the code check is 0.2~0.4.
Technical solution of the present invention is decoded by the data of the Internet video that will be received, and obtains the resolution of Internet video Rate and code check, according to resolution ratio and code check, calculate the image quality penalty coefficient of current resolution respectively, and the image quality of code check is compensated Coefficient, is adjusted to definition.For the Internet video of high compression ratio, technical solution of the present invention is simultaneously to resolution ratio and code check Compensation is adjusted, relatively existing image quality adjustment simply adjusts resolution ratio, and inventive technique scheme effectively increases Internet video Definition during broadcasting.
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 embodiment or existing The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is the flow chart of the embodiment of method one of present invention lifting Internet video definition;
Fig. 2 is the noise reduction function curve synoptic diagram of resolution ratio of the present invention;
Fig. 3 is the acutance function curve schematic diagram of resolution ratio of the present invention;
Fig. 4 is the noise reduction function curve synoptic diagram of code check of the present invention;
Fig. 5 is the acutance function curve schematic diagram of code check of the present invention;
Fig. 6 is the functional block diagram of the device of present invention lifting Internet video definition.
The realization of the object of the invention, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific 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.Base Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its His embodiment, belongs to the scope of protection of the invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention In relative position relation, motion conditions under a certain particular pose (as shown in drawings) between each part etc. are explained, if should When particular pose changes, then directionality indicates also correspondingly to change therewith.
In addition, it is related to the description of " first ", " second " etc. to be only used for describing purpose in the present invention, and it is not intended that referring to Show or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " are defined Two " at least one this feature can be expressed or be implicitly included to feature.In addition, the technical scheme between each embodiment can To be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical scheme occurs It is conflicting or when cannot realize it will be understood that the combination of this technical scheme does not exist, also not in the protection model of application claims Within enclosing.
The present invention proposes a kind of method for lifting Internet video definition.
Reference picture 1, in embodiments of the present invention, the method for the lifting Internet video definition, comprise the following steps:
S100, the data for receiving Internet video, decoding obtain the resolution ratio and code check of Internet video;
S200, resolution ratio and code check according to current network video, calculate the image quality compensation system of current resolution respectively Number, and code check image quality penalty coefficient;
The image quality penalty coefficient of S300, the image quality penalty coefficient according to the resolution ratio and code check, adjustment Internet video Definition.
It should be noted that the height of the definition of video is related to resolution ratio and code check.Under normal circumstances, resolution ratio is got over Greatly, code check is bigger, and the definition of video is also higher.
Internet video, due to the limitation of network broadband, is compressed by height ratio, and its code check is relatively low.Carrying out video During broadcasting, generally the resolution ratio of video and code check are adjusted, to obtain best definition.Set in the embodiment of the present invention Put formula:
Definition=resolution ratio * (b1* noise reduction+c1* acutancees)+code check * (b2* noise reduction+c2* acutancees);
Wherein, b1 is the related noise reduction coefficient of resolution ratio, and c1 is the related acutance coefficient of resolution ratio, and b1 and c1 is resolution The image quality penalty coefficient of rate;
B2 is the related noise reduction coefficient of code check, and c2 is the related acutance coefficient of code check, and the image quality that b2 and c2 is code check is mended Repay coefficient.
As shown from the above formula, according to the resolution ratio and code check of video, corresponding image quality compensating parameter is calculated, is realized most Big broadcasting definition.
Technical solution of the present invention is decoded by the data using the Internet video that will be received, and obtains Internet video Resolution ratio and code check, by resolution ratio and code check, calculate the image quality penalty coefficient of current resolution respectively, and code check image quality Penalty coefficient, then corresponding adjustment definition.For the Internet video of high compression ratio, technical solution of the present invention simultaneously to resolution ratio and Code check is adjusted compensation, and relatively existing image quality adjustment simply adjusts resolution ratio, and inventive technique scheme effectively increases network Definition during video playback.
Specifically, the resolution ratio and code check according to current network video, calculates the image quality of current resolution respectively Penalty coefficient, and code check image quality penalty coefficient the step of include:
According to the resolution ratio and code check of current network video, default noise reduction function and acutance function are called, calculated respectively Go out the noise reduction penalty coefficient and acutance penalty coefficient of current resolution ratio, and noise reduction penalty coefficient and the acutance compensation of code check are Number.
Reference picture 2 and Fig. 3, generally, the standard resolution signal exported using reference instrument adjusts each different Noise reduction coefficient b1 and acutance coefficient c1 below resolution ratio cause that image reaches preferable definition, draw respectively one group with point Noise reduction numerical value and acutance numerical value that resolution changes and changes, can be calculated with change resolution by exponential smoothing algorithm Noise reduction curve B1=fb1 (resolution ratio) of adjustment, acutance C1=fc1 (resolution ratio).
Reference picture 4 and Fig. 5, similarly, under a certain resolution ratio, reduce video code rate, by adjust noise reduction coefficient b2 (with Code check is reduced and increases noise reduction) and acutance coefficient c2 (reducing acutance with code check reduction) so that the definition of low bit- rate is obtained To compensation, the effect close with code check definition high is reached.Under each different code check, have recorded one group of noise reduction coefficient b2 and One group of acutance coefficient c2, the noise reduction curve B2=fb2 (codes that can be adjusted in the hope of changing with code check by exponential smoothing algorithm Rate) and acutance C2=fc2 (code check).
Therefore, the noise reduction function and the data of acutance function that will be obtained are pre-loaded to need the display device of compensation, root According to different resolution ratio and code check, by calling noise reduction function and acutance function, the noise reduction compensation system of resolution ratio can be just calculated Number and acutance penalty coefficient, and code check noise reduction penalty coefficient and acutance penalty coefficient.
Further, the image quality penalty coefficient and the image quality penalty coefficient of code check according to the resolution ratio, adjusts net The step of definition of network video, includes:
Noise reduction penalty coefficient and acutance penalty coefficient according to current resolution ratio, and the noise reduction penalty coefficient of code check and sharp Degree penalty coefficient, noise reduction coefficient and acutance coefficient needed for being calculated adjustment Internet video definition, according to noise reduction coefficient and Acutance coefficient, adjusts the definition of Internet video.
Synthetic resolution and the effect with code check, can calculate:
Noise reduction function curve:B=B1+B2=fb1 (resolution ratio)+fb2 (code check)
Acutance function curve:C=C1+C2=fc1 (resolution ratio)+fc2 (code check)
Further, the image quality penalty coefficient and the image quality penalty coefficient of code check according to the resolution ratio, adjusts net The step of definition of network video, further includes:
The specific gravity factor of specific gravity factor and code check according to resolution ratio, adjusts the definition of Internet video.
Further, the specific gravity factor sum of the specific gravity factor of resolution ratio and code check is 1, the model of the specific gravity factor of resolution ratio The scope for enclosing the specific gravity factor for 0.6~0.8 and code check is 0.2~0.4.
What deserves to be explained is, influence proportion of influence and code check of the resolution ratio to video definition to video definition is not The same, it is the definition for further optimizing video playback, the shadow of resolution ratio and code check to definition is measured according to actual experiment Proportion is rung, formula is set:
Definition=a1* resolution ratio * (b1* noise reduction+c1* acutancees)+a2* code checks * (b2* noise reduction+c2* acutancees);
Wherein, b1 is the related noise reduction coefficient of resolution ratio, and c1 is the related acutance coefficient of resolution ratio, and b1 and c1 is resolution The image quality penalty coefficient of rate;
B2 is the related noise reduction coefficient of code check, and c2 is the related acutance coefficient of code check, and the image quality that b2 and c2 is code check is mended Repay coefficient;
A1 is the specific gravity factor of resolution ratio, and a2 is the specific gravity factor of code check.A1 and a2 sums are 1, therefore, when a1 and a2 its One of setting when, another one is also determined that.For example when a1 values are 0.7, a2 values are 0.3.
By the invention it is possible to lift image definition of the Internet video of low bit- rate when playing so that user obtains More preferable image quality experience.
Reference picture 6, based on the method for above-mentioned lifting Internet video definition, also a kind of lifting Internet video of the present invention is clear The device of degree, the device can be television set, can especially receive the television set of network signal, and the device includes:
Decoder module 10, the data for receiving Internet video, decoding obtains the resolution ratio and code check of Internet video;
Computing module 20, for resolution ratio and code check according to current network video, calculates current resolution respectively Image quality penalty coefficient, and code check image quality penalty coefficient;
Adjusting module 30, for image quality penalty coefficient and the image quality penalty coefficient of code check according to the resolution ratio, adjustment The definition of Internet video.
Preferably, the computing module 20 specifically for:
According to the resolution ratio and code check of current network video, default noise reduction function and acutance function are called, calculated respectively Go out the noise reduction penalty coefficient and acutance penalty coefficient of current resolution ratio, and noise reduction penalty coefficient and the acutance compensation of code check are Number.
Preferably, the adjusting module 30 specifically for:
Noise reduction penalty coefficient and acutance penalty coefficient according to current resolution ratio, and the noise reduction penalty coefficient of code check and sharp Degree penalty coefficient, noise reduction coefficient and acutance coefficient needed for being calculated adjustment Internet video definition, according to noise reduction coefficient and Acutance coefficient, adjusts the definition of Internet video.
Specifically, the adjusting module 30 is additionally operable to:The specific gravity factor of specific gravity factor and code check according to resolution ratio, adjustment The definition of Internet video.
Further, the specific gravity factor sum of the specific gravity factor of resolution ratio and code check is 1, the model of the specific gravity factor of resolution ratio The scope for enclosing the specific gravity factor for 0.6~0.8 and code check is 0.2~0.4.
The present invention for Internet video code check it is relatively low definition can be caused to decline the characteristics of, by recognizing Internet video Code check and resolution ratio, and simultaneously according to code check and resolution ratio come adjust automatically image quality compensating parameter so that playing low bit- rate Strengthen noise reduction during network film source, reduce acutance, so that picture is apparent when ensureing to play Internet video.
The preferred embodiments of the present invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every at this Under the inventive concept of invention, the equivalent structure transformation made using description of the invention and accompanying drawing content, or directly/use indirectly It is included in scope of patent protection of the invention in other related technical fields.

Claims (10)

1. it is a kind of lifted Internet video definition method, it is characterised in that comprise the following steps:
The data of Internet video are received, decoding obtains the resolution ratio and code check of Internet video;
According to the resolution ratio and code check of current network video, the image quality penalty coefficient of current resolution, and code check are calculated respectively Image quality penalty coefficient;
The image quality penalty coefficient of image quality penalty coefficient and code check according to the resolution ratio, adjusts the definition of Internet video.
2. the method for lifting Internet video definition as claimed in claim 1, it is characterised in that described to be regarded according to current network The resolution ratio and code check of frequency, calculate the image quality penalty coefficient of current resolution respectively, and the image quality penalty coefficient of code check step Suddenly include:
According to the resolution ratio and code check of current network video, default noise reduction function and acutance function are called, calculate work as respectively The noise reduction penalty coefficient and acutance penalty coefficient of preceding resolution ratio, and code check noise reduction penalty coefficient and acutance penalty coefficient.
3. the method for lifting Internet video definition as claimed in claim 2, it is characterised in that described according to the resolution ratio Image quality penalty coefficient and code check image quality penalty coefficient, adjust Internet video definition the step of include:
Noise reduction penalty coefficient and acutance penalty coefficient according to current resolution ratio, and the noise reduction penalty coefficient and acutance of code check are mended Coefficient is repaid, noise reduction coefficient and acutance coefficient needed for being calculated adjustment Internet video definition, according to noise reduction coefficient and acutance Coefficient, adjusts the definition of Internet video.
4. the method for lifting Internet video definition as claimed in claim 1, it is characterised in that described according to the resolution ratio Image quality penalty coefficient and code check image quality penalty coefficient, adjust Internet video definition the step of further include:
The specific gravity factor of specific gravity factor and code check according to resolution ratio, adjusts the definition of Internet video.
5. the method for lifting Internet video definition as claimed in claim 4, it is characterised in that the proportion system of the resolution ratio The specific gravity factor sum of number and code check is 1, and the scope of the specific gravity factor of the resolution ratio is 0.6~0.8, the proportion of the code check The scope of coefficient is 0.2~0.4.
6. it is a kind of lifted Internet video definition device, it is characterised in that including:
Decoder module, the data for receiving Internet video, decoding obtains the resolution ratio and code check of Internet video;
Computing module, for resolution ratio and code check according to current network video, the image quality that current resolution is calculated respectively is mended Repay coefficient, and code check image quality penalty coefficient;
Adjusting module, for image quality penalty coefficient and the image quality penalty coefficient of code check according to the resolution ratio, adjusts network video The definition of frequency.
7. the device of Internet video definition is lifted as claimed in claim 6, it is characterised in that the computing module is specifically used In:
According to the resolution ratio and code check of current network video, default noise reduction function and acutance function are called, calculate work as respectively The noise reduction penalty coefficient and acutance penalty coefficient of preceding resolution ratio, and code check noise reduction penalty coefficient and acutance penalty coefficient.
8. the device of Internet video definition is lifted as claimed in claim 7, it is characterised in that the adjusting module is specifically used In:
Noise reduction penalty coefficient and acutance penalty coefficient according to current resolution ratio, and the noise reduction penalty coefficient and acutance of code check are mended Coefficient is repaid, noise reduction coefficient and acutance coefficient needed for being calculated adjustment Internet video definition, according to noise reduction coefficient and acutance Coefficient, adjusts the definition of Internet video.
9. the device of Internet video definition is lifted as claimed in claim 6, it is characterised in that the adjusting module is also used In:
The specific gravity factor of specific gravity factor and code check according to resolution ratio, adjusts the definition of Internet video.
10. the device of Internet video definition is lifted as claimed in claim 9, it is characterised in that the proportion of the resolution ratio The specific gravity factor sum of coefficient and code check is 1, and the scope of the specific gravity factor of the resolution ratio is 0.6~0.8, the ratio of the code check The scope of weight coefficient is 0.2~0.4.
CN201611126915.2A 2016-12-08 2016-12-08 Lift the method and device of Internet video definition Pending CN106792156A (en)

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