CN105554514A - Method and system for processing opening songs of videos - Google Patents

Method and system for processing opening songs of videos Download PDF

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Publication number
CN105554514A
CN105554514A CN201510904172.6A CN201510904172A CN105554514A CN 105554514 A CN105554514 A CN 105554514A CN 201510904172 A CN201510904172 A CN 201510904172A CN 105554514 A CN105554514 A CN 105554514A
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China
Prior art keywords
frame
video
frames
same number
pixel
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Granted
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CN201510904172.6A
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CN105554514B (en
Inventor
陈丛亮
刘德建
毛新生
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Fujian TQ Digital Co Ltd
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Fujian TQ Digital Co Ltd
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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]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/231Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
    • H04N21/23113Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion involving housekeeping operations for stored content, e.g. prioritizing content for deletion because of storage space restrictions
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/23418Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

The invention discloses a method and a system for processing the opening songs of videos. The method comprises the following steps: decoding out the original images of a first video and a second video to obtain a first material and a second material; comparing the first material and the second material frame by frame by starting from the first frame to get identical frames; and intercepting the consecutive identical frames from the first video and the second video, and saving the consecutive identical frames as an opening video file. Through the scheme, the opening songs of multiple videos can be acquired quickly and saved separately, and therefore, the storage space and bandwidth of a server can be saved.

Description

The method and system of process piece of video cephalic flexure
Technical field
The present invention relates to technical field of video processing, especially relate to a kind of method and system processing piece of video cephalic flexure.
Background technology
There is the Presence of the Moment of repetition in current video, its content identical mostly, the repeating data waste disk space that server stores is a large amount of, user's repeated downloads, waste bandwidth.
Existing Chinese patent application (application number: 201110262643.X) discloses a kind of detection method of TV play teaser or tail, and its technical scheme arranges the time zone that will detect head; Video finger print feature extraction is carried out in this time zone; The video finger print obtained is utilized to carry out head detection.But this scheme need given in advance go out time zone, be therefore equivalent to need to open video file in advance, know the frame of video of its teaser or tail, and obtain its duration, its operability is strong, and user experience is poor.
Summary of the invention
Technical problem to be solved by this invention is: obtain the same piece cephalic flexure existed in multiple video, and preserve separately, saves server storage and bandwidth.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: provide a kind of method processing piece of video cephalic flexure, comprising:
Decode the raw frames of the first video and the second video, obtain the first material and the second material;
From the first frame, compare the first material and the second material frame by frame, obtain same number of frames;
From the first video, the second video, intercept continuous print same number of frames, and save as head video file.
For solving the problem, the present invention also provides a kind of system processing piece of video cephalic flexure, comprising:
Decoder module, for decoding the raw frames of video first video and the second video, obtains the first material and the second material;
Comparing module, for from the first frame, compares the first material and the second material frame by frame, obtains same number of frames;
Memory module, for intercepting continuous print same number of frames from the first video, the second video, and saves as head video file.
Beneficial effect of the present invention is: be different from prior art, and the present invention, by the raw frames of decoding different video, obtains corresponding material, and comparison material frame by frame, obtain same number of frames.Intercept same number of frames, namely obtain head video file.By the way, the present invention can the Presence of the Moment of the multiple video of quick obtaining, and preserves separately, thus can save server storage and server bandwidth.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the inventive method embodiment one;
Fig. 2 is the structured flowchart of present system embodiment two.
Embodiment
By describing technology contents of the present invention in detail, realized object and effect, accompanying drawing is coordinated to be explained below in conjunction with execution mode.
The design of most critical of the present invention is: by resolving video frame by frame, and comparison goes out to start the part of continuous print identical content, intercepts out respectively, split out by Presence of the Moment by time started and end time.
Please refer to Fig. 1, the embodiment of the present invention one provides a kind of method processing piece of video cephalic flexure, comprising:
S1: the raw frames decoding the first video and the second video, obtains the first material and the second material;
S2: from the first frame, compares the first material and the second material frame by frame, obtains same number of frames;
S3: intercept continuous print same number of frames from the first video, the second video, and save as head video file.
Be different from prior art, the embodiment of the present invention one, by the raw frames of decoding different video, obtains corresponding material, and comparison material frame by frame, obtain same number of frames.Intercept same number of frames, namely obtain head video file.By the way, the present invention can the Presence of the Moment of the multiple video of quick obtaining, and preserves separately, thus can save server storage and server bandwidth.
Wherein, step S2 is specially:
The screen resolution of the first material and the second material is reduced to 1/4;
The color tolerance of pixel in comparison first material and the second material frame of video, obtains similar frame one by one;
Obtain duration and meet pre-conditioned continuous phase like frame, as same number of frames.
Wherein, when obtaining the step of similar frame, can also be operated by following manner:
The RGB component value of pixel in comparison first material and the second material frame of video one by one;
Judge in component value, whether maximum tolerance is less than predetermined tolerance;
If so, pixel color similarity is then thought;
Otherwise, then think that pixel color is dissimilar;
Obtain the total number of pixel of color similarity, judge whether described total number ratio is greater than predetermined ratio value;
If so, then confirm that the frame of video of comparison is similar frame;
Otherwise, then confirm that the frame of video of comparison is not similar frame.
And, when obtaining the step of same number of frames, can also be undertaken by following manner:
Compared pixels point tolerance frame by frame on the first material and the second material, obtains continuous phase like frame;
Judge whether continuous phase is greater than scheduled duration like the duration of frame;
If so, then confirm that described continuous phase is same number of frames like frame;
Otherwise, then confirm that described continuous phase is not same number of frames like frame.
Wherein, in a concrete example, after acquisition head video file, also can preserve respectively, specifically comprise:
Respectively the first video after intercepting, the second video remaining video frame are saved as first content video file, the second audio content file;
Obtain the related information of head video file and first content video file, head video file and the second audio content file respectively, and be saved in database.
In practical operation, user needs all collection numbers obtaining out a film.
Then collect first, the second collection video decodes raw frames from the first frame, and the first frame collected with second compares.
Relatively whether two frames pixel that is whether identical or that can also compare two frames mates completely.But in some cases, compared pixels point coupling completely for video compression frames compare be difficult to realize mate completely.
Particularly, by screen resolution is reduced to such as 1/4, resolution reduction can use experimental data and experiment conclusion to carry out, as being also reduced to 1/2 or 1/8 etc.Due to the possibility that the resolution that there will be two videos is different, therefore come relatively can avoid some situation with a low point resolution: the aberration that such as video occurs after being compressed into little resolution, more just has comparatively big error with high-resolution.Because video also likely repeatedly compression be compressed to low resolution and change into high-resolution, actual color have lost.The present invention preferably 1/4 resolution after, be also can revise according to time situation.The video of such as 1920x1080 and the video of 1280x720 compare, and resolution are reduced to the resolution all lower than these two numerical value and compare, and could reduce the error brought due to video compression like this.The video erection of 1920x1080 is h.265 lossy compression method form instead of former video, color relation wherein can supplement with difference arithmetic, supplementary meeting like this causes error when comparison very large, reduces resolution and can reduce such error, get rid of mathematic interpolation pixel out.
After reduction resolution, the color tolerance ((R of each pixel of comparison again, G, each component value of B is [0 ~ 255]), the value comparison (10,10 respectively of three colors, 10) with (12,8,13) getting wherein maximum difference 13-10=3, R and G absolute difference is all 2).After comparison terminates, can based on experience value, selection predetermined ratio value is that the tolerance of the color of 90% is all less than 10, then judge that two content frames are similar to identical.
Should be understood that, 90% is predetermined ratio value, can rule of thumb judge to come, and also obtains by actual conditions adjustment.In like manner, 10 is predetermined tolerances, also can rule of thumb judge, also obtains by actual conditions adjustment.
If first collection the first frame and second collects the first content frame and is similar to identical, then continue to compare the first collection second frame and second collection the second frame, until two frames are approximate not identical.If consecutive identical frame number is greater than 10 seconds (i.e. scheduled duration can adjust according to actual conditions), then judge that two collection exist continuous print same number of frames.
The former frame of first collection the first frame to the frame number not being same number of frames is intercepted out, saves as independent head video file.
Finally, the first collection residue frame number can be saved as first content video file, the second collection residue frame number is saved as the second audio content file.This similar method can also be applied to the 3rd collection, the 4th collection etc.
By head video file and first content video file related information stored in database, head video file and the second audio content file association information are stored in database.Only need to take out corresponding head video file according to related information like this to play with audio content document order and can reach and originally play the same effect.
It will be appreciated by those skilled in the art that for convenience and to be described below by way of a concrete example.
Such as: " the fiery shadow person of bearing " this film, first the first collection and the second collection are compared.Collect first, second integrates video decodes resolution as the raw frames of 640X480 resolution is reduced to 320X240 from the first frame, and the first frame collected with second compares.Compare from first pixel of the picture of the first frame, coordinate is (x, y)=(0,0) pixel and the second respective coordinates collected are (x, y)=(0,0) color of pixel compares, such as collect first pixel (x, the color of the pixel of y)=(0,0) is (10,10,10) with (12,8,13) getting wherein maximum difference 13-10=3, R and G absolute difference is all 2) then judge that two pixel colors of two collection are similar to.Then comparison (x, y)=(0,1), (x, y)=(0,2) are until till (x, y)=(319,239).The ratio that the pixel tolerance of then adding up all is less than 10 is greater than 90% and judges that this two content frame is similar to identical.
If first collection the first frame and second collects the first content frame and is similar to identical, then continue to compare the first collection second frame and second collection the second frame, until two frames are approximate not identical.If consecutive identical frame number is greater than 10 seconds, there is continuous print same number of frames in two collection.
The former frame of first collection the first frame to not approximately uniform frame number is intercepted out, saves as independent head video file.
First collection residue frame number is saved as audio content file 1, the second collection residue frame number is saved as video file 2.This similar method can also be applied to the 3rd collection, the 4th collection.
By head video file and audio content file 1 related information stored in database, head video file and audio content file 2 related information are stored in database.Need to take out corresponding head video file according to related information to play with audio content document order and can reach and originally play the same effect later only.
Accordingly, the embodiment of the present invention two provides a kind of system 100 processing piece of video cephalic flexure, comprising:
Decoder module 110, for decoding the raw frames of video first video and the second video, obtains the first material and the second material;
Comparing module 120, for from the first frame, compares the first material and the second material frame by frame, obtains same number of frames;
Memory module 130, for intercepting continuous print same number of frames from the first video, the second video, and saves as head video file.
Wherein, described memory module 130 also comprises:
Content storage unit, for saving as first content video file, the second audio content file by the first video after intercepting, the second video remaining video frame respectively;
Association store unit, for obtaining the related information of head video file and first content video file, head video file and the second audio content file respectively, and is saved in database.
Described comparing module 120 also comprises:
Resolution elements, for being reduced to 1/4 by the screen resolution of the first material and the second material;
Similar frame unit, on comparison first material one by one and the second material frame of video, the color tolerance of pixel, obtains similar frame;
Same number of frames unit, meets pre-conditioned continuous phase like frame, as same number of frames for obtaining duration.
Further, described similar frame unit also for:
The RGB component value of pixel in comparison first material and the second material frame of video one by one;
Judge in component value, whether maximum tolerance is less than predetermined tolerance;
If so, pixel color similarity is then thought;
Otherwise, then think that pixel color is dissimilar;
Obtain the total number of pixel of color similarity, judge whether described total number ratio is less than predetermined ratio value;
If so, then confirm that the frame of video of comparison is similar frame;
Otherwise, then confirm that the frame of video of comparison is not similar frame.
Described same number of frames unit also for:
Compared pixels point tolerance frame by frame on the first material and the second material, obtains continuous phase like frame;
Judge whether continuous phase is greater than scheduled duration like the duration of frame;
If so, then confirm that described continuous phase is same number of frames like frame;
Otherwise, then confirm that described continuous phase is not same number of frames like frame.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every equivalents utilizing specification of the present invention and accompanying drawing content to do, or be directly or indirectly used in relevant technical field, be all in like manner included in scope of patent protection of the present invention.

Claims (10)

1. process a method for piece of video cephalic flexure, it is characterized in that, comprising:
Decode the raw frames of the first video and the second video, obtain the first material and the second material;
From the first frame, compare the first material and the second material frame by frame, obtain same number of frames;
From the first video, the second video, intercept continuous print same number of frames, and save as head video file.
2. a kind of method processing piece of video cephalic flexure according to claim 1, is characterized in that, also comprise:
Respectively the first video after intercepting, the second video remaining video frame are saved as first content video file, the second audio content file;
Obtain the related information of head video file and first content video file, head video file and the second audio content file respectively, and be saved in database.
3. a kind of method processing piece of video cephalic flexure according to claim 1, is characterized in that, from the first frame, compare the first material and the second material frame by frame, and the step obtaining same number of frames is specially:
The screen resolution of the first material and the second material is reduced;
The color tolerance of pixel in comparison first material and the second material frame of video, obtains similar frame one by one;
Obtain duration and meet pre-conditioned continuous phase like frame, as same number of frames.
4. a kind of method processing piece of video cephalic flexure according to claim 3, is characterized in that, one by one the color tolerance of pixel in comparison first material and the second material frame of video, and the step obtaining similar frame is specially:
The RGB component value of pixel in comparison first material and the second material frame of video one by one;
Judge in component value, whether maximum tolerance is less than predetermined tolerance;
If so, pixel color similarity is then thought;
Otherwise, then think that pixel color is dissimilar;
Obtain the total number of pixel of color similarity, judge whether described total number ratio is greater than predetermined ratio value;
If so, then confirm that the frame of video of comparison is similar frame;
Otherwise, then confirm that the frame of video of comparison is not similar frame.
5. a kind of method processing piece of video cephalic flexure according to claim 3, is characterized in that, obtain duration and meet pre-conditioned continuous phase like frame, the step as same number of frames is specially:
Compared pixels point tolerance frame by frame on the first material and the second material, obtains continuous phase like frame;
Judge whether continuous phase is greater than scheduled duration like the duration of frame;
If so, then confirm that described continuous phase is same number of frames like frame;
Otherwise, then confirm that described continuous phase is not same number of frames like frame.
6. process a system for piece of video cephalic flexure, it is characterized in that, comprising:
Decoder module, for decoding the raw frames of video first video and the second video, obtains the first material and the second material;
Comparing module, for from the first frame, compares the first material and the second material frame by frame, obtains same number of frames;
Memory module, for intercepting continuous print same number of frames from the first video, the second video, and saves as head video file.
7. a kind of system processing piece of video cephalic flexure according to claim 6, it is characterized in that, described memory module also comprises:
Content storage unit, for saving as first content video file, the second audio content file by the first video after intercepting, the second video remaining video frame respectively;
Association store unit, for obtaining the related information of head video file and first content video file, head video file and the second audio content file respectively, and is saved in database.
8. a kind of system processing piece of video cephalic flexure according to claim 6, it is characterized in that, described comparing module also comprises:
Resolution elements, for reducing the screen resolution of the first material and the second material;
Similar frame unit, on comparison first material one by one and the second material frame of video, the color tolerance of pixel, obtains similar frame;
Same number of frames unit, meets pre-conditioned continuous phase like frame, as same number of frames for obtaining duration.
9. a kind of system processing piece of video cephalic flexure according to claim 8, is characterized in that, described similar frame unit also for:
The RGB component value of pixel in comparison first material and the second material frame of video one by one;
Judge in component value, whether maximum tolerance is less than predetermined tolerance;
If so, pixel color similarity is then thought;
Otherwise, then think that pixel color is dissimilar;
Obtain the total number of pixel of color similarity, judge whether described total number ratio is greater than predetermined ratio value;
If so, then confirm that the frame of video of comparison is similar frame;
Otherwise, then confirm that the frame of video of comparison is not similar frame.
10. a kind of system processing piece of video cephalic flexure according to claim 8, is characterized in that, described same number of frames unit also for:
Compared pixels point tolerance frame by frame on the first material and the second material, obtains continuous phase like frame;
Judge whether continuous phase is greater than scheduled duration like the duration of frame;
If so, then confirm that described continuous phase is same number of frames like frame;
Otherwise, then confirm that described continuous phase is not same number of frames like frame.
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