CN105611326A - Stream media on demand auditing and checking method - Google Patents
Stream media on demand auditing and checking method Download PDFInfo
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- CN105611326A CN105611326A CN201511003793.3A CN201511003793A CN105611326A CN 105611326 A CN105611326 A CN 105611326A CN 201511003793 A CN201511003793 A CN 201511003793A CN 105611326 A CN105611326 A CN 105611326A
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- Prior art keywords
- broadcast source
- characteristic information
- streaming media
- calibration
- max
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
- H04N21/23892—Multiplex stream processing, e.g. multiplex stream encrypting involving embedding information at multiplex stream level, e.g. embedding a watermark at packet level
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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
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
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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
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44204—Monitoring of content usage, e.g. the number of times a movie has been viewed, copied or the amount which has been watched
-
- 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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
- H04N21/8352—Generation of protective data, e.g. certificates involving content or source identification data, e.g. Unique Material Identifier [UMID]
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention relates to the stream media technical field, discloses a stream media on demand auditing and checking method. In the invention, the stream media on demand auditing and checking method comprises following steps: extracting the feature information of a play source and generating a fingerprint file of the play source, wherein the fingerprint file comprises at least one piece of feature information and the play time corresponding to the feature information, the feature information is fragment information extracted from the play source; when the play source is played, matching the play source with the feature information in the fingerprint file in real time; and if any one piece of feature information and the play source are failed to match, stopping playing the play source. According to the method of the invention, the contents of the play source of the network video are ensured to be legal; and bad effects resulted from that the network video is illegally tampered are avoided.
Description
Technical field
The present invention relates to stream media technology field, particularly a kind of streaming media on demand is checked method of calibration.
Background technology
The life that the rise of Internet video is for we brings great convenience, and at present, TV has also accessedWeb content, still, if Web content is changed into reaction content by hacker, that brought so affects meetingExtremely severe; All can cause very again or teenager's content has been tampered into pornographic violent content,Severe result.
Summary of the invention
The problem that the present invention solves is to provide a kind of streaming media on demand to check method of calibration, can ensure netThe content legality of the broadcast source of network video closes rule, avoid that Internet video caused after illegally distorting severe afterReally.
For solving the problems of the technologies described above, embodiments of the present invention provide a kind of streaming media on demand to check schoolProved recipe method, comprises following steps:
Extract the characteristic information of broadcast source, and generate the file fingerprint of described broadcast source; Wherein, described fingerIn line file, comprise characteristic information and reproduction time corresponding to described characteristic information described at least one; InstituteStating characteristic information is the frag info extracting from described broadcast source;
In the time that described broadcast source is played, the characteristic information in described broadcast source and described file fingerprint is enteredRow real-time matching, if wherein described in any one characteristic information and described broadcast source it fails to match, stopPlay described broadcast source.
Embodiment of the present invention in terms of existing technologies, is from broadcast source, to extract at least one featureInformation, to generate the file fingerprint of broadcast source, wherein, comprises these characteristic informations corresponding in file fingerprintReproduction time; In the time that broadcast source is played, by broadcast source corresponding to the reproduction time in file fingerprintFrag info mates one by one with the frag info of corresponding reproduction time in file fingerprint, if wherein anyIt fails to match with frag info corresponding in broadcast source for characteristic information, stops playing broadcast source. ThisSample, can ensure that the content legality of the broadcast source of Internet video closes rule, avoids Internet video illegally to be distortedAfter the ill effect that causes.
Further, in the step of the characteristic information of described extraction broadcast source, with random interval from describedIn the logical block of broadcast source, extract described characteristic information. Like this, the logical block of characteristic information extraction itBetween the uncertainty at interval can increase the difficulty that the content of broadcast source is illegally distorted, can more be added withPower ground ensures that the content legality of the broadcast source of Internet video closes rule.
Further, the characteristic information in described broadcast source and described file fingerprint is carried out to real-time matchingStep in, if not coupling for the first time from the successful position of current matching, skips follow-up the1 to Min logical block, carries out real-time matching to Min+1 to Max logical block.Due to from the successful position of current matching, follow-up the 1st is impossible to Min logical blockBe extracted characteristic information, carried out fingerprint matching so skip not spend, can reduce amount of calculation, carriedHigh matching efficiency.
Brief description of the drawings
Fig. 1 is the flow chart of checking method of calibration according to the streaming media on demand of first embodiment of the invention;
Fig. 2 is according to the flow chart of the coupling fingerprint in first embodiment of the invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to thisBright each embodiment is explained in detail. But, persons of ordinary skill in the art may appreciate thatIn the each embodiment of the present invention, in order to make reader understand the application better, many technology are proposed thinJoint. But, even without these ins and outs and the many variations based on following embodiment and amendment,Also can realize the each claim of the application technical scheme required for protection.
The first embodiment of the present invention relates to a kind of streaming media on demand and checks method of calibration, idiographic flow asShown in Fig. 1, comprise following steps:
Step 101, extracts the characteristic information of broadcast source, and generates the file fingerprint of broadcast source. Wherein,In file fingerprint, comprise the reproduction time that at least one characteristic information and characteristic information are corresponding; Characteristic informationFor the frag info extracting from broadcast source. Characteristic information described in present embodiment can be called as streamThe fingerprint of media.
Specifically, be to upgrade the latter while issuing in broadcast source, different reproduction time from broadcast sourceExtract characteristic information, generate the file fingerprint of broadcast source, in file fingerprint, characteristic information and broadcastingTime is corresponding one by one; Wherein, reproduction time refers to the reproduction time of characteristic information in broadcast source.
In this step, the length of controlling feature information is less than or equal to the payload length of logical block.Wherein, logical block is package or the audio/video frames in Streaming Media (broadcast source). Suppose file fingerprintLength be a byte, the length of reproduction time is t byte, particularly, reproduction time is sharedLength minimum is 3 bytes; Logical block payload data length is u byte, so u >=(a – is t).The value size of characteristic information length can have influence on the degree of accuracy and the shared hard drive space of file fingerprint of couplingSize. On the one hand, the length of the length of characteristic information is larger, and matched data is just more, broadcast sourceReliability is just higher. On the other hand, in fact due to the high compression characteristic of stream medium data, the letter of repetitionBreath seldom, so can get too large characteristic value in practical application, only just needs a very little partOK. In the time of practical application, the length of characteristic information can be at least 12 bytes.
Step 102, in the time that broadcast source is played, carries out the characteristic information in broadcast source and file fingerprintReal-time matching. Particularly, be by the characteristic information in file fingerprint according to the order of reproduction time with broadcastThe frag info of putting corresponding reproduction time place in source is distinguished coupling one by one.
Step 103, it fails to match to judge whether to exist characteristic information and broadcast source. If so, carry out stepRapid 104, otherwise, execution step 105. Wherein, it fails to match for any one characteristic information and broadcast source,Be and have characteristic information and broadcast source it fails to match, namely, once there is characteristic information and broadcast sourceIt fails to match, just performs step 104, only has whole characteristic informations and corresponding reproduction time in broadcast sourceAll the match is successful for frag info, just performs step 105.
Step 104, stops playing broadcast source.
Step 105, judges that broadcast source is legal, continues to play broadcast source.
Like this, can ensure that the content legality of the broadcast source of Internet video closes rule, avoid Internet video by non-The ill effect that method causes after distorting.
Wherein, step 102～105 are further refinement specifically, specifically as shown in Figure 2, comprises as followsStep:
Step 201, in the time that broadcast source is played, obtains first characteristic information in file fingerprint. SpecificallyGround is said, is according to playing initial time, obtaining a feature nearest from reproduction time from file fingerprintInformation, for convenience of description, will be designated as from a nearest reproduction time corresponding to characteristic information of reproduction timeThe first reproduction time.
Step 202, mates the characteristic information obtaining with frag info corresponding in broadcast source. ?In this step, be by corresponding the first reproduction time in file fingerprint first characteristic information and broadcast sourceIn the frag info at the first reproduction time place mate.
Step 203, whether the characteristic information that judgement is obtained mates with broadcast source. If so, perform step204, otherwise, execution step 205. Specifically judge the first reproduction time in file fingerprint correspondingWhether a characteristic information mates with the frag info at the first reproduction time place in broadcast source.
Step 204, judges whether the characteristic information in file fingerprint all mated with broadcast source. If so,Perform step 207, otherwise, execution step 206.
Step 205, stops playing broadcast source.
Step 206, obtains the next characteristic information of the successful characteristic information of current matching in file fingerprint.
Step 207, judges that broadcast source is legal, continues to play broadcast source.
Compared with prior art, be from broadcast source, to extract the finger of at least one characteristic information as broadcast sourceLine file, wherein, comprises the reproduction time that these characteristic informations are corresponding in file fingerprint; At broadcast source quiltWhen broadcasting, by the frag info and file fingerprint corresponding to the reproduction time in file fingerprint in broadcast sourceThe frag info of corresponding reproduction time mates one by one, if wherein any one characteristic information and broadcast sourceIt fails to match for the frag info of middle correspondence, stops playing broadcast source. Like this, can ensure Internet videoThe content legality of broadcast source close rule, avoid Internet video by the ill effect causing after illegally distorting.
The second embodiment of the present invention relates to a kind of streaming media on demand and checks method of calibration. The second enforcement sideFormula has been done further improvement on the basis of the first embodiment, and main improvements are: in the present inventionIn the second embodiment, with random interval characteristic information extraction from the logical block of broadcast source, like this,The uncertainty at the interval between the logical block of characteristic information extraction can increase the content of broadcast source by non-The difficulty that method is distorted, can more effectively ensure that the content legality of the broadcast source of Internet video closes rule.
In the present embodiment, the span of random interval is [Min, Max], and Min, Max are natureNumber, the mean value of Min and Max is according to the size setting of file fingerprint, the difference of Min, Max exhaustedValue is less than to default threshold value.
Specifically, the time interval of characteristic information extraction (fingerprint) can be expressed as m+n, wherein,M equals the mean value of Min and Max, can be large according to the time interval taking the fingerprint and file fingerprintLittle setting, m is larger, and the average time interval taking the fingerprint is larger, and the length of file fingerprint is less, instituteThe memory space accounting for is less; / 2nd of an absolute value of the difference of Min, Max is N, and the value of N is littleIn default threshold value, the span of n is [N, N]. N value is larger, cracks the complexity of broadcast source moreEven if the code stream of deliberately forging according to fingerprint also cannot normally be watched, can further increase broadcast source greatly,The content difficulty of illegally being distorted.
For example, that supposes to take the fingerprint is spaced apart the individual logical block of 8192+ (n), and each logical block is188 bytes, n is the random value between-100 to 100, the code stream of 2M code check is less than 2 seconds couplings oneInferior, the file fingerprint in the Streaming Media source (broadcast source) of 1024T left and right can be stored in 10G space.
The 3rd embodiment of the present invention relates to a kind of streaming media on demand and checks method of calibration. The 3rd enforcement sideFormula has been done further improvement on the basis of the second embodiment, and main improvements are: in the present inventionIn the 3rd embodiment, if not mate for the first time, from the successful position of current matching, after skippingContinuous the 1st to Min logical block, carries out reality to Min+1 is individual to Max logical blockIn time, mates, and like this, can reduce amount of calculation, improves matching efficiency.
Specifically, in the present embodiment, if coupling for the first time is patrolled from first of broadcast sourceAll the match is successful to collect unit to a Max logical block, stops playing broadcast source. Specifically,Start counting from first logical block that starts buffering (or broadcasting) broadcast source, if experience Max+1After individual logical block, the match is successful not yet for fingerprint, assert that this broadcast source is illegally distorted, and immediate cancel is broadcastPut this broadcast source; If the match is successful, continue the next fingerprint of comparison.
If not coupling for the first time, from the successful position of current matching, skip follow-up the 1st extremelyMin logical block, carries out real-time matching to Min+1 to Max logical block, due toFrom the successful position of current matching, can not be carried to Min logical block for follow-up the 1stGot characteristic information, carried out fingerprint matching so skip not spend, can reduce amount of calculation, raisingJoin efficiency.
The step of the whole bag of tricks is divided above, just in order to be described clearly, can merge into one while realizationStep or some step is split, is decomposed into multiple steps, as long as comprise identical logical relation,All in the protection domain of this patent; To adding inessential amendment in algorithm or in flow process or drawingEnter inessential design, but the core design that does not change its algorithm and flow process is all at the protection model of this patentIn enclosing.
Persons of ordinary skill in the art may appreciate that the respective embodiments described above be realize of the present invention concreteEmbodiment, and in actual applications, can do various changes to it in the form and details, and not inclined to one sideFrom the spirit and scope of the present invention.
Claims (7)
1. streaming media on demand is checked a method of calibration, it is characterized in that, comprises following steps:
Extract the characteristic information of broadcast source, and generate the file fingerprint of described broadcast source; Wherein, described fingerIn line file, comprise characteristic information and reproduction time corresponding to described characteristic information described at least one; InstituteStating characteristic information is the frag info extracting from described broadcast source;
In the time that described broadcast source is played, the characteristic information in described broadcast source and described file fingerprint is enteredRow real-time matching, if wherein described in any one characteristic information and described broadcast source it fails to match, stopPlay described broadcast source.
2. streaming media on demand according to claim 1 is checked method of calibration, it is characterized in that,In the step of the characteristic information of described extraction broadcast source,
From the logical block of described broadcast source, extract described characteristic information with random interval.
3. streaming media on demand according to claim 2 is checked method of calibration, it is characterized in that instituteThe span of stating random interval is [Min, Max], and Min, Max are natural number, and Min and Max's is flatAverage is according to the size setting of described file fingerprint, and the absolute value of the difference of Min, Max is less than defaultThreshold value.
4. streaming media on demand according to claim 2 is checked method of calibration, it is characterized in that,In the step of the characteristic information of described extraction broadcast source,
The length of controlling described characteristic information is less than or equal to the payload length of described logical block.
5. streaming media on demand according to claim 3 is checked method of calibration, it is characterized in that,Characteristic information in described broadcast source and described file fingerprint is carried out in the step of real-time matching,
If coupling for the first time, from Max logic of first logical block to the of described broadcast sourceAll the match is successful in unit, stops playing described broadcast source.
6. streaming media on demand according to claim 3 is checked method of calibration, it is characterized in that,Characteristic information in described broadcast source and described file fingerprint is carried out in the step of real-time matching,
If not coupling for the first time, from the successful position of current matching, skip follow-up the 1st extremelyMin logical block, carries out real-time matching to Min+1 to Max logical block.
7. want the streaming media on demand described in 2 to check method of calibration according to right, it is characterized in that, described inLogical block is package or the audio/video frames in described Streaming Media.
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| CN201511003793.3A CN105611326B (en) | 2015-12-28 | 2015-12-28 | Streaming media on demand checks method of calibration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113038146A (en) * | 2019-12-09 | 2021-06-25 | 德科仕通信(上海)有限公司 | Method and system for detecting consistency of self-adaptive IPTV live broadcast content |
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| CN100477809C (en) * | 2005-07-15 | 2009-04-08 | 复旦大学 | Method for measuring audio-video frequency content change |
| CN100561493C (en) * | 2007-03-20 | 2009-11-18 | 陆小潮 | Method for supervising and supervising device that digital multimedia content is play |
| CN103747327A (en) * | 2013-12-20 | 2014-04-23 | Tcl集团股份有限公司 | Advertisement-filtering channel-switching method and device |
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| CN113038146A (en) * | 2019-12-09 | 2021-06-25 | 德科仕通信(上海)有限公司 | Method and system for detecting consistency of self-adaptive IPTV live broadcast content |
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