CN105791979A - Video file processing method and display device - Google Patents
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- CN105791979A CN105791979A CN201410829169.8A CN201410829169A CN105791979A CN 105791979 A CN105791979 A CN 105791979A CN 201410829169 A CN201410829169 A CN 201410829169A CN 105791979 A CN105791979 A CN 105791979A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing 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
- H04N21/4402—Processing 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
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Abstract
The invention discloses a video file processing method. The method comprises following steps of receiving a compressed video file after compression; decoding the compressed video file, and obtaining compression attributes; calculating a compression ratio of the compressed video file according to the compression attributes; and obtaining image quality processing parameters corresponding to the compression ratio, and processing the image quality according to the image quality processing parameter, thus improving the image quality of the compressed video file. The invention also discloses a display device. According to the method and the device, different image quality processing parameters can be obtained specific to different compression attributes; the image quality is processed according to the image quality processing parameters; and the optimum image quality effect is realized on the display device.
Description
Technical field
The present invention relates to video technique field, particularly relate to a kind of video file processing method and display device.
Background technology
At present, increasing video content does not enter subscriber household again through traditional broadcast television net, but first form compressed video file after compression and be transferred into subscriber household again through Internet, owing to the network bandwidth situation of each subscriber household is different, the compressed video file data volume being transferred to different user can be caused different, therefore, in order to meet different user, the image definition of compressed video file image and broadcasting fluency etc. being viewed and admired demand, network provider often provides the compressed video file of different compression ratio to download broadcasting to user.So; the user that the network bandwidth is low meets the fluency play; would generally select play high compression ratio, low bit-rate compressed video file to download broadcasting; and the high user of the network bandwidth sees apparent picture material, can select to play low compression ratio, high code check compressed video file to download broadcasting.
Compared with original image, will necessarily there is image impairment in the image after adopting this scheme compression to process.And, these losses often show as the phenomenons such as mosquito noise in various degree, square noise or definition reduction.But existing display device is when processing image quality, often to the compressed video file compressed through different images compression algorithm and different compression ratio received, only a kind of image quality parameter processes, and the compressive features according to video file does not do corresponding parameter adaptation.This image quality processes parameter and is typically all and is adjusted for standard digital compressed video file signal, blue light high-definition signal such as HDMI input, owing to the image quality of signal own is better, its parameter adjustment degree is also little, therefore, it is big that this image quality parameter is not appropriate for image impairment, the compressed video file image that image quality is poor.
Foregoing is only used for assisting understanding technical scheme, does not represent and admits that foregoing is prior art.
Summary of the invention
A kind of video file processing method of offer and display device are provided, aim to the video file of different packed attribute, transfer different image qualities and process parameter, and according to described image quality process parameter, image quality is processed, to reach the image quality effect of optimum on the display apparatus.
For achieving the above object, the present invention provides a kind of video file processing method, and described video file processing method comprises the following steps:
Receive the compressed video file of compressed process；
It is decoded described compressed video file processing, and obtains packed attribute；
According to described packed attribute, calculate the compression ratio obtaining described compressed video file；
Transfer image quality corresponding to described compression ratio and process parameter, and according to described image quality process parameter, image quality is processed, to promote the image quality of compressed video file.
Preferably, described according to described packed attribute, the step calculating the compression ratio obtaining described compressed video file includes:
Identify described packed attribute, obtain compression algorithm and transmission code rate；
Standard code check is determined according to described compression algorithm；
Described transmission code rate and described standard code check are compared, calculates the compression ratio obtaining described compressed video file.
Preferably, described image quality processes parameter and includes removing mosquito noise process parameter, removes square noise processed parameter and definition process parameter, described image quality corresponding to described compression ratio of transferring processes parameter, and according to described image quality process parameter, image quality is processed, the step to promote the image quality of compressed video file includes:
Judge that whether described compression ratio is less than predetermined value；
If described compression ratio is more than or equal to predetermined value, then according to removal mosquito noise and/or removal square noise processed parameter, described image quality is carried out stronger noise suppressed and process, process parameter according to described definition simultaneously and definition is carried out low frequency adjustment；
If described compression ratio is less than predetermined value, then according to removal mosquito noise and/or square noise processed parameter, described image quality is carried out more weak noise suppressed and process, process parameter according to described definition simultaneously and definition is carried out high frequency adjustment.
Preferably, when described compression algorithm is identical, the described image quality process parameter that different described compression ratio one_to_one corresponding is different.
Preferably, described packed attribute also includes compressed video file size, duration, compressed format, resolution and frame frequency.
Additionally, for achieving the above object, the present invention also provides for a kind of display device, and described display device includes:
Receiver module, for receiving the compressed video file of compressed process；
Decoder module, for being decoded described compressed video file processing, and obtains packed attribute；
Computing module, for according to described packed attribute, calculating the compression ratio obtaining described compressed video file；
Processing module, processes parameter for transferring image quality corresponding to described compression ratio, and according to described image quality process parameter, image quality is processed, to promote the image quality of compressed video file.
Preferably, described computing module includes:
Recognition unit, is used for identifying described packed attribute, obtains compression algorithm and transmission code rate；
Acquiring unit, for determining standard code check according to described compression algorithm；
Computing unit, for described transmission code rate and described standard code check being compared, calculates the compression ratio obtaining described compressed video file.
Preferably, described image quality processes parameter and includes removing mosquito noise process parameter, removes square noise processed parameter and definition process parameter, and described processing module includes:
Judging unit, is used for judging that whether described compression ratio is less than predetermined value；
First processing unit, if for described compression ratio more than or equal to predetermined value, then according to removal mosquito noise and/or removal square noise processed parameter, described image quality is carried out stronger noise suppressed to process, process parameter according to described definition simultaneously and definition is carried out low frequency adjustment；
Second processing unit, if for described compression ratio less than predetermined value, then according to removal mosquito noise and/or removal square noise processed parameter, described image quality is carried out more weak noise suppressed to process, process parameter according to described definition simultaneously and definition is carried out high frequency adjustment.
Preferably, when described compression algorithm is identical, the described image quality process parameter that different described compression ratio one_to_one corresponding is different.
Preferably, described packed attribute also includes compressed video file size, duration, compressed format, resolution and frame frequency.
The present invention obtains packed attribute by being decoded compressed video file processing, and according to described packed attribute, calculate the compression ratio obtaining described compressed video file, image quality is processed by the image quality process parameter transferring described compression ratio more corresponding, thus promoting the image quality of compressed video file so that video file can reach the image quality effect of optimum at display device.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of video file processing method one embodiment of the present invention；
Fig. 2 is the refinement schematic flow sheet of step S103 in Fig. 1；
Fig. 3 is the refinement schematic flow sheet of step S104 in Fig. 1；
Fig. 4 is the code check of MPEG4 encoding code stream is schematic diagram during 2M；
Fig. 5 is the code check of MPEG4 encoding code stream is schematic diagram during 5M；
Fig. 6 is the code check of MPEG4 encoding code stream is schematic diagram during 10M；
Fig. 7 is the high-level schematic functional block diagram of display device one embodiment of the present invention；
Fig. 8 is the refinement high-level schematic functional block diagram of computing module in Fig. 7；
Fig. 9 is the high-level schematic functional block diagram of processing module in Fig. 7.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
The present invention provides a kind of video file processing method, and with reference to Fig. 1, in one embodiment, described video file processing method comprises the following steps:
Step S101, receives the compressed video file of compressed process；
In this preferred embodiment, described display device is preferably television set, naturally it is also possible to for other can the display device of playing video file, illustrate for television set in full below.Television set receives the compressed video file by the Internet compressed process transmitted.
Step S102, is decoded described compressed video file processing, and obtains packed attribute；
In this preferred embodiment, described compressed video file is decoded processing by television set, obtains the packed attribute of compressed video file, such as the size of compressed video file, duration, compressed format, resolution, frame frequency and compression algorithm and transmission code rate.It is understood that any video jukebox software can obtain packed attribute by reading compressed video file.
Step S103, according to described packed attribute, calculates the compression ratio obtaining described compressed video file；
In this preferred embodiment, especially by the compression algorithm in packed attribute and transmission code rate, calculate the compression ratio obtaining described compressed video file.It is understood that the corresponding different standard code check of no compression algorithm, thus, compression ratio corresponding to different compression algorithms is also different.
It is understood that the video file after overcompression processes, compared with original image, certainly exist image impairment.And this image impairment, for different compression algorithms, different compression ratios, its extent of damage is different.In this preferred embodiment, for digital video signal, the digital video image quality of low compression ratio is good, and the digital video image of high compression ratio is of poor quality.
Step S104, transfers image quality corresponding to described compression ratio and processes parameter, and according to described image quality process parameter, image quality is processed, to promote the image quality of compressed video file.
In the present embodiment, under the premise that video file compression algorithm is certain, different video compress is than the digital video type of i.e. corresponding different images quality, image quality corresponding to described compression ratio can be transferred and process parameter, and with corresponding parameter, image is carried out corresponding image quality process, thus promoting the image quality of compressed video file.
In one embodiment, as in figure 2 it is shown, on the basis of the embodiment of above-mentioned Fig. 1, in the present embodiment, described step S103 includes:
Step S1031, identifies described packed attribute, obtains compression algorithm and transmission code rate；
In the present embodiment, television set identification packed attribute, obtain compression algorithm therein and transmission code rate.
Step S1032, determines standard code check according to described compression algorithm；
In the present embodiment, for each video file compression algorithm, there is the compression bit rate of the high-quality image quality of its correspondence, be standard code check.
Step S1033, compares described transmission code rate and described standard code check, calculates the compression ratio obtaining described compressed video file.
With reference to table 1, in the present embodiment, it is example with MPEG (MovingPicturesExpertsGroup, dynamic image expert group) 4 encoding code streams that resolution is 1280*720, according to packed attribute, they are different relative to the compression ratio of original video for the code stream of different code checks:
Table 1
In the present embodiment, video compress is compare according to the code check (i.e. transmission code rate) after original video code check and compression and obtain than α, unrelated with the attribute such as resolution, duration, therefore can be summarized as should a kind of characteristic information of video compression algorithm.
In one embodiment, as it is shown on figure 3, on the basis of the embodiment of above-mentioned Fig. 1, in the present embodiment, described image quality processes parameter and includes removing mosquito noise process parameter, removes square noise processed parameter and definition process parameter, and described step S104 includes:
Step S1041, it is judged that whether described compression ratio is less than predetermined value；
In conjunction with Fig. 4, Fig. 5 and Fig. 6, discovery can be contrasted, code stream for the 1280*720 resolution of MPEG4 coding: the code stream of 2M code check, its mosquito noise and square noise are significantly more than the code stream of 5M and 10M code check, and its definition is significantly worse than the code stream of 5M and 10M code check；And the code stream of 5M and 10M code check, its contrast difference is little, so for this video file, when code check > 5M time, even if it is also inconspicuous to the lifting effect of its video definition to improve code check further.
Due to the compression ratio of video can be summarized as to should a kind of characteristic information of video compression algorithm, therefore, it can according to video compress than the definition process parameter adaptation table for this video compression algorithm.In this preferred embodiment, it is possible to set described predetermined value as 80, when described compression ratio is more than or equal to predetermined value 80, it was shown that the image impairment of this high compression ratio video file is more serious；And when described compression ratio is less than predetermined value, it was shown that the image impairment of this low compression ratio video file is lighter.For the video file that loss is serious, the process parameter that should transfer corresponding adjustment degree stronger processes, and for losing lighter video file, the process parameter that should transfer corresponding adjustment degree more weak processes.
Step S1042, if described compression ratio is more than or equal to predetermined value, then according to removal mosquito noise and/or removal square noise processed parameter, described image quality is carried out stronger noise suppressed to process, process parameter according to described definition simultaneously and definition is carried out low frequency adjustment；
In this preferred embodiment, for MPEG4 video compression algorithm, when video compress is than α >=80, now transfer the digital video type one of the picture quality of correspondence, described image quality is carried out stronger noise suppressed and processes, make picture totally smooth.It should be appreciated that along with image denoising degree becomes strong, image definition all can be deteriorated therewith, fuzzy pictures, and image border is unintelligible.Signal hence for different noise levels, it is necessary to carry out dynamic noise process, coordinates definition to properly increase simultaneously.Therefore, simultaneously need to process parameter according to described definition definition is carried out low frequency adjustment, edge and outline portion to image carry out crisperding process and improve definition.
Step S1043, if described compression ratio is less than predetermined value, then carries out more weak noise suppressed according to removal mosquito noise and/or square noise processed parameter to described image quality and processes, process parameter according to described definition simultaneously and definition is carried out high frequency adjustment.
In this preferred embodiment, for MPEG4 video compression algorithm, when video compress is than α < 80, now transfer the digital video type two of the picture quality of correspondence, described image quality carries out more weak noise suppressed process, to keep the original details of picture；Process parameter according to described definition simultaneously and definition is carried out high frequency adjustment, thus improving picture details representability.
In one embodiment, when described compression algorithm is identical, the described image quality process parameter that different described compression ratio one_to_one corresponding is different.It should be appreciated that digital video type is not limited to two kinds of process parameters that the present embodiment provides.It is of course also possible to according to actual needs, refine more digital video type, it is possible to preset number video type one, direct alignment processing parameter one are set；Preset number video type two, direct alignment processing parameter two；Preset number video type three, direct alignment processing parameter three are set；Until arranging preset number video type N, direct alignment processing parameter N, when determining that described compressed file is digital video type N, can directly transfer the process parameter N of correspondence, and directly according to the corresponding parameter processing transferred.It is understood that in this preferred embodiment, different image qualities processes parameter and is only applicable to the digital video type of correspondence, can not cross-reference.
In one embodiment, described packed attribute also includes compressed video file size, duration, compressed format, resolution and frame frequency.
Packed attribute includes the size of compressed video file, duration, compressed format, resolution, frame frequency and compression algorithm and transmission code rate.It is understood that any video jukebox software can obtain packed attribute by reading compressed video file.
In one embodiment, described video file is the one in Internet video, multimedia video or digital video.
It should be appreciated that described video file is not limited to this several types.
The present invention also provides for a kind of display device 1, and with reference to Fig. 7, in one embodiment, described display device 1 includes:
Receiver module 101, for receiving the compressed video file of compressed process；
In this preferred embodiment, described display device is preferably television set, naturally it is also possible to for other can the display device of playing video file, illustrate for television set in full below.Television set receives the compressed video file by the Internet compressed process transmitted.
Decoder module 102, for being decoded described compressed video file processing, and obtains packed attribute；
In this preferred embodiment, described compressed video file is decoded processing by television set, obtains the packed attribute of compressed video file, such as the size of compressed video file, duration, compressed format, resolution, frame frequency and compression algorithm and transmission code rate.It is understood that any video playback file can obtain packed attribute by reading compressed video file.
Computing module 103, for according to described packed attribute, calculating the compression ratio obtaining described compressed video file；
In this preferred embodiment, especially by the compression algorithm in packed attribute and transmission code rate, calculate the compression ratio obtaining described compressed video file.It is understood that the corresponding different standard code check of no compression algorithm, thus, compression ratio corresponding to different compression algorithms is also different.
It is understood that the video file after overcompression processes, compared with original image, certainly exist image impairment.And this image impairment, for different compression algorithms, different compression ratios, its extent of damage is different.In this preferred embodiment, for digital video signal, the digital video image quality of low compression ratio is good, and the digital video image of high compression ratio is of poor quality.
Processing module 104, processes parameter for transferring image quality corresponding to described compression ratio, and according to described image quality process parameter, image quality is processed, to promote the image quality of compressed video file.
In the present embodiment, under the premise that video file compression algorithm is certain, different video compress is than the digital video type of i.e. corresponding different images quality, image quality corresponding to described compression ratio can be transferred and process parameter, and with corresponding parameter, image is carried out corresponding image quality process, thus promoting the image quality of compressed video file.
In one embodiment, as shown in Figure 8, on the basis of the embodiment of above-mentioned Fig. 7, in the present embodiment, described computing module 103 includes:
Recognition unit 1031, is used for identifying described packed attribute, obtains compression algorithm and transmission code rate；
In the present embodiment, television set identification packed attribute, obtain compression algorithm therein and transmission code rate.
Acquiring unit 1032, for determining standard code check according to described compression algorithm；
In the present embodiment, for each video file compression algorithm, there is the compression bit rate of the high-quality image quality of its correspondence, be standard code check.
Computing unit 1033, for described transmission code rate and described standard code check being compared, calculates the compression ratio obtaining described compressed video file.
With reference to table 1, in the present embodiment, it is example with MPEG (MovingPicturesExpertsGroup, dynamic image expert group) 4 encoding code streams that resolution is 1280*720, according to packed attribute, they are different relative to the compression ratio of original video for the code stream of different code checks:
Table 1
In the present embodiment, video compress is compare according to the code check (i.e. transmission code rate) after original video code check and compression and obtain than α, unrelated with the attribute such as resolution, duration, therefore can be summarized as should a kind of characteristic information of video compression algorithm.
In one embodiment, as it is shown in figure 9, on the basis of the embodiment of above-mentioned Fig. 7, in the present embodiment, described image quality processes parameter and includes removing mosquito noise process parameter, removes square noise processed parameter and definition process parameter, and described processing module 104 includes:
Judging unit 1041, is used for judging that whether described compression ratio is less than predetermined value；
In conjunction with Fig. 4, Fig. 5 and Fig. 6, discovery can be contrasted, code stream for the 1280*720 resolution of MPEG4 coding: the code stream of 2M code check, its mosquito noise and square noise are significantly more than the code stream of 5M and 10M code check, and its definition is significantly worse than the code stream of 5M and 10M code check；And the code stream of 5M and 10M code check, its contrast difference is little, so for this video file, when code check > 5M time, even if it is also inconspicuous to the lifting effect of its video definition to improve code check further.
Due to the compression ratio of video can be summarized as to should a kind of characteristic information of video compression algorithm, therefore, it can according to video compress than the definition process parameter adaptation table for this video compression algorithm.In this preferred embodiment, it is possible to set described predetermined value as 80, when described compression ratio is more than or equal to predetermined value 80, it was shown that the image impairment of this high compression ratio video file is more serious；And when described compression ratio is less than predetermined value, it was shown that the image impairment of this low compression ratio video file is lighter.For the video file that loss is serious, the process parameter that should transfer corresponding adjustment degree stronger processes, and for losing lighter video file, the process parameter that should transfer corresponding adjustment degree more weak processes.
First processing unit 1042, if for described compression ratio more than or equal to predetermined value, then according to removal mosquito noise and/or removal square noise parameter, described image quality is carried out stronger noise suppressed to process, process parameter according to described definition simultaneously and definition is carried out low frequency adjustment；
In this preferred embodiment, for MPEG4 video compression algorithm, when video compress is than α >=80, now transfer the digital video type one of the picture quality of correspondence, described image quality is carried out stronger noise suppressed and processes, make picture totally smooth.It should be appreciated that along with image denoising degree becomes strong, image definition all can be deteriorated therewith, fuzzy pictures, and image border is unintelligible.Signal hence for different noise levels, it is necessary to carry out dynamic noise process, coordinates definition to properly increase simultaneously.Therefore, simultaneously need to process parameter according to described definition definition is carried out low frequency adjustment, edge and outline portion to image carry out crisperding process and improve definition.
Second processing unit 1043, if for described compression ratio less than predetermined value, then according to removal mosquito noise and/or removal square noise processed parameter, described image quality is carried out more weak noise suppressed to process, process parameter according to described definition simultaneously and definition is carried out high frequency adjustment.
In this preferred embodiment, for MPEG4 video compression algorithm, when video compress is than α < 80, now transfer the digital video type two of the picture quality of correspondence, described image quality carries out more weak noise suppressed process, to keep the original details of picture；Process parameter according to described definition simultaneously and definition is carried out high frequency adjustment, thus improving picture details representability.
In one embodiment, when described compression algorithm is identical, the described image quality process parameter that different described compression ratio one_to_one corresponding is different.It should be appreciated that digital video type is not limited to two kinds of process parameters that the present embodiment provides.It is of course also possible to according to actual needs, refine more digital video type, it is possible to preset number video type one, direct alignment processing parameter one are set；Preset number video type two, direct alignment processing parameter two；Preset number video type three, direct alignment processing parameter three are set；Until arranging preset number video type N, direct alignment processing parameter N, when determining that described compressed file is digital video type N, can directly transfer the process parameter N of correspondence, and directly according to the corresponding parameter processing transferred.It is understood that in this preferred embodiment, different image qualities processes parameter and is only applicable to the digital video type of correspondence, can not cross-reference.
In one embodiment, described packed attribute also includes compressed video file size, duration, compressed format, resolution and frame frequency.
Packed attribute includes the size of compressed video file, duration, compressed format, resolution, frame frequency and compression algorithm and transmission code rate.It is understood that any video jukebox software can obtain packed attribute by reading compressed video file.
In one embodiment, described video file is the one in Internet video, multimedia video or digital video.
It should be appreciated that described video file is not limited to this several types.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the present invention and accompanying drawing content to make or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, all in like manner include in the scope of patent protection of the present invention.
Claims (10)
1. a video file processing method, it is characterised in that described video file processing method comprises the following steps:
Receive the compressed video file of compressed process；
It is decoded described compressed video file processing, and obtains packed attribute；
According to described packed attribute, calculate the compression ratio obtaining described compressed video file；
Transfer image quality corresponding to described compression ratio and process parameter, and according to described image quality process parameter, image quality is processed, to promote the image quality of compressed video file.
2. video file processing method as claimed in claim 1, it is characterised in that described according to described packed attribute, the step calculating the compression ratio obtaining described compressed video file includes:
Identify described packed attribute, obtain compression algorithm and transmission code rate；
Standard code check is determined according to described compression algorithm；
Described transmission code rate and described standard code check are compared, calculates the compression ratio obtaining described compressed video file.
3. video file processing method as claimed in claim 1, it is characterized in that, described image quality processes parameter and includes removing mosquito noise process parameter, removes square noise processed parameter and definition process parameter, described image quality corresponding to described compression ratio of transferring processes parameter, and according to described image quality process parameter, image quality is processed, the step to promote the image quality of compressed video file includes:
Judge that whether described compression ratio is less than predetermined value；
If described compression ratio is more than or equal to predetermined value, then according to removal mosquito noise and/or removal square noise processed parameter, described image quality is carried out stronger noise suppressed and process, process parameter according to described definition simultaneously and definition is carried out low frequency adjustment；
If described compression ratio is less than predetermined value, then according to removal mosquito noise and/or removal square noise processed parameter, described image quality is carried out more weak noise suppressed and process, process parameter according to described definition simultaneously and definition is carried out high frequency adjustment.
4. video file processing method as claimed in claim 2, it is characterised in that when described compression algorithm is identical, the described image quality process parameter that different described compression ratio one_to_one corresponding is different.
5. video file processing method as claimed in claim 2, it is characterised in that described packed attribute also includes compressed video file size, duration, compressed format, resolution and frame frequency.
6. a display device, it is characterised in that described display device includes:
Receiver module, for receiving the compressed video file of compressed process；
Decoder module, for being decoded described compressed video file processing, and obtains packed attribute；
Computing module, for according to described packed attribute, calculating the compression ratio obtaining described compressed video file；
Processing module, processes parameter for transferring image quality corresponding to described compression ratio, and according to described image quality process parameter, image quality is processed, to promote the image quality of compressed video file.
7. display device as claimed in claim 6, it is characterised in that described computing module includes:
Recognition unit, is used for identifying described packed attribute, obtains compression algorithm and transmission code rate；
Acquiring unit, for determining standard code check according to described compression algorithm；
Computing unit, for described transmission code rate and described standard code check being compared, calculates the compression ratio obtaining described compressed video file.
8. display device as claimed in claim 6, it is characterised in that described image quality process parameter includes removing mosquito noise process parameter, removal square noise processed parameter and definition and processes parameter, and described processing module includes:
Judging unit, is used for judging that whether described compression ratio is less than predetermined value；
First processing unit, if for described compression ratio more than or equal to predetermined value, then according to removal mosquito noise and/or removal square noise processed parameter, described image quality is carried out stronger noise suppressed to process, process parameter according to described definition simultaneously and definition is carried out low frequency adjustment；
Second processing unit, if for described compression ratio less than predetermined value, then according to removal mosquito noise and/or removal square noise processed parameter, described image quality is carried out more weak noise suppressed to process, process parameter according to described definition simultaneously and definition is carried out high frequency adjustment.
9. display device as claimed in claim 7, it is characterised in that when described compression algorithm is identical, the described image quality process parameter that different described compression ratio one_to_one corresponding is different.
10. display device as claimed in claim 7, it is characterised in that described packed attribute also includes compressed video file size, duration, compressed format, resolution and frame frequency.
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