CN105611326B - Streaming media on demand checks method of calibration - Google Patents
Streaming media on demand checks method of calibration Download PDFInfo
- Publication number
- CN105611326B CN105611326B CN201511003793.3A CN201511003793A CN105611326B CN 105611326 B CN105611326 B CN 105611326B CN 201511003793 A CN201511003793 A CN 201511003793A CN 105611326 B CN105611326 B CN 105611326B
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- Prior art keywords
- broadcast source
- characteristic information
- streaming media
- file fingerprint
- calibration
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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
-
- 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
-
- 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]
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- 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 present invention relates to stream media technology field, discloses a kind of streaming media on demand and check method of calibration.In the present invention, streaming media on demand checks method of calibration comprising the steps of: extracts the characteristic information of broadcast source, and generates the file fingerprint of broadcast source；It wherein, include at least one characteristic information and the corresponding play time of characteristic information in file fingerprint；Characteristic information is the piece segment information extracted from broadcast source；When broadcast source is played, the characteristic information in broadcast source and file fingerprint is subjected to real-time matching, if wherein it fails to match with broadcast source for any one characteristic information, stops playing broadcast source.In this manner it is ensured that the content legality of the broadcast source of network video closes rule, caused ill effect after avoiding network video from illegally being distorted.
Description
Technical field
The present invention relates to stream media technology field, in particular to a kind of streaming media on demand checks method of calibration.
Background technique
The rise of network video brings great convenience for our life, currently, TV has also accessed Web content,
It is brought to influence be extremely severe but if Web content changes reaction content by hacker；It is again or green few
Year content has been tampered into pornographic violent content, can all lead to the result of very severe.
Summary of the invention
Present invention solves the problem in that providing a kind of streaming media on demand checks method of calibration, it is ensured that network video
The content legality of broadcast source closes rule, caused ill effect after avoiding network video from illegally being distorted.
In order to solve the above technical problems, embodiments of the present invention, which provide a kind of streaming media on demand, checks method of calibration,
It comprises the steps of:
The characteristic information of broadcast source is extracted, and generates the file fingerprint of the broadcast source；Wherein, it is wrapped in the file fingerprint
Containing characteristic information described at least one and the corresponding play time of the characteristic information；The characteristic information is from the broadcasting
The piece segment information extracted in source；
When the broadcast source is played, the characteristic information in the broadcast source and the file fingerprint is carried out real-time
Match, if wherein it fails to match with the broadcast source for any one of characteristic information, stops playing the broadcast source.
Embodiment of the present invention is to extract at least one characteristic information from broadcast source with life in terms of existing technologies
At the file fingerprint of broadcast source, wherein include the corresponding play time of these characteristic informations in file fingerprint；It is broadcast in broadcast source
When putting, play time will be corresponded in the piece segment information and file fingerprint of the play time corresponded in file fingerprint in broadcast source
Piece segment information is matched one by one, if wherein any one characteristic information fails with segment information matches corresponding in broadcast source,
Then stop playing broadcast source.In this manner it is ensured that the content legality of the broadcast source of network video closes rule, avoid network video non-
Method caused ill effect after distorting.
Further, in the characteristic information for extracting broadcast source the step of, with random interval from the broadcast source
The characteristic information is extracted in logic unit.In this way, the uncertainty for extracting the interval between the logic unit of characteristic information can
It, can be more it is effectively guaranteed that the content of the broadcast source of network video be closed to increase the difficulty that the content of broadcast source is illegally distorted
Method closes rule.
Further, the step of the characteristic information in the broadcast source and the file fingerprint is carried out real-time matching
In, if non-first time matches, since the successful position of current matching, subsequent 1st is skipped to the Min logic list
Member carries out real-time matching to Min+1 to the Max logic unit.It is subsequent due to since the successful position of current matching
1st can not be extracted characteristic information to the Min logic unit, not spend carry out fingerprint matching so skipping, can
To reduce calculation amount, matching efficiency is improved.
Detailed description of the invention
Fig. 1 is that the streaming media on demand of first embodiment according to the present invention checks the flow chart of method of calibration；
Fig. 2 is the flow chart of the matching fingerprint in first embodiment according to the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to each reality of the invention
The mode of applying is explained in detail.However, it will be understood by those skilled in the art that in each embodiment of the present invention,
In order to make the reader understand this application better, many technical details are proposed.But even if without these technical details and base
In the various changes and modifications of following embodiment, each claim of the application technical side claimed also may be implemented
Case.
The first embodiment of the present invention is related to a kind of streaming media on demands to check method of calibration, detailed process as shown in Figure 1,
It comprises the steps of:
Step 101, the characteristic information of broadcast source is extracted, and generates the file fingerprint of broadcast source.Wherein, it is wrapped in file fingerprint
Containing at least one characteristic information and the corresponding play time of characteristic information；Characteristic information is the segment letter extracted from broadcast source
Breath.Characteristic information described in present embodiment can be referred to as the fingerprint of Streaming Media.
Specifically, being to extract spy from play time different in broadcast source when broadcast source updates the latter's publication
Reference breath, generates the file fingerprint of broadcast source, and in file fingerprint, characteristic information and play time are corresponded；Wherein, it plays
Time refers to play time of the characteristic information in broadcast source.
In this step, the length of controlling feature information is less than or equal to the payload length of logic unit.Wherein, logic
Unit is the package or audio/video frames in Streaming Media (broadcast source).Assuming that the length of file fingerprint is a byte, play time
Length be t byte, specifically, minimum 3 bytes of length shared by play time；Logic unit payload data length is
U byte, then u >=(a-t).The value size of characteristic information length influences whether matched accuracy and file fingerprint
The size of shared hard drive space.On the one hand, the length of the length of characteristic information is bigger, and matched data is more, broadcast source can
It is higher by spending.On the other hand, actually due to the high compression characteristic of stream medium data, duplicate information is seldom, so practical
It can not have to take too big characteristic value in, it is only necessary to which small part is just.In practical application, the length of characteristic information
Degree can be at least 12 bytes.
Step 102, when broadcast source is played, the characteristic information in broadcast source and file fingerprint is subjected to real-time matching.
Specifically, being by the characteristic information in file fingerprint according to being corresponded at play time in the sequence and broadcast source of play time
Piece segment information is matched one by one respectively.
Step 103, judging whether there is characteristic information, it fails to match with broadcast source.If so, 104 are thened follow the steps, otherwise,
Execute step 105.Wherein, it fails to match with broadcast source for any one characteristic information, as existing characteristics information and broadcast source
With failure, it is, once there is characteristic information, it fails to match with broadcast source, is carried out step 104, only whole characteristic informations
The equal successful match of piece segment information of play time is corresponded to broadcast source, just executes step 105.
Step 104, stop playing broadcast source.
Step 105, determine that broadcast source is legal, continue to play broadcast source.
In this manner it is ensured that the content legality of the broadcast source of network video closes rule, after avoiding network video from illegally being distorted
Caused ill effect.
Wherein, step 102~105 specifically can further refine, specifically as shown in Fig. 2, comprising the following steps:
Step 201, when broadcast source is played, first characteristic information in file fingerprint is obtained.Specifically, being basis
Initial time is played, a characteristic information nearest from play time is obtained from file fingerprint for convenience of description will be from broadcasting
The corresponding play time of a characteristic information of time recently is denoted as the first play time.
Step 202, the characteristic information that a will acquire segment information corresponding with broadcast source is matched.In this step,
It is by corresponding first characteristic information of the first play time in file fingerprint and the piece at the first play time in broadcast source
Segment information is matched.
Step 203, judge whether the characteristic information obtained matches with broadcast source.If so, thening follow the steps 204, otherwise, hold
Row step 205.Specifically judge in corresponding first characteristic information of the first play time in file fingerprint and broadcast source the
Whether the piece segment information at one play time matches.
Step 204, judge whether the characteristic information in file fingerprint all matched with broadcast source.If so, executing step
Rapid 207, otherwise, execute step 206.
Step 205, stop playing broadcast source.
Step 206, next characteristic information of the successful characteristic information of current matching in file fingerprint is obtained.
Step 207, determine that broadcast source is legal, continue to play broadcast source.
It compared with prior art, is the file fingerprint that at least one characteristic information is extracted from broadcast source as broadcast source,
It wherein, include the corresponding play time of these characteristic informations in file fingerprint；It, will be corresponding in broadcast source when broadcast source is played
The piece segment information that play time is corresponded in the piece segment information and file fingerprint of play time in file fingerprint carries out one by one
Match, if wherein any one characteristic information fails with segment information matches corresponding in broadcast source, stops playing broadcast source.This
Sample, it is ensured that the content legality of the broadcast source of network video closes rule, caused severe after avoiding network video from illegally being distorted
Consequence.
Second embodiment of the present invention is related to a kind of streaming media on demand and checks method of calibration.Second embodiment is first
It is further improved on the basis of embodiment, mainly thes improvement is that: in second embodiment of the invention, with random
Characteristic information is extracted from the logic unit of broadcast source in interval, in this way, extracting the interval between the logic unit of characteristic information
Uncertainty can increase the difficulty that the content of broadcast source is illegally distorted, can be more it is effectively guaranteed that the broadcasting of network video
The content legality in source closes rule.
In the present embodiment, the value range of random interval is [Min, Max], and Min, Max are natural number, Min and Max
Average value be arranged according to the size of file fingerprint, the absolute value of the difference of Min, Max is less than preset threshold value.
Specifically, m+n can be expressed as by extracting the time interval of characteristic information (fingerprint), wherein m is equal to Min and Max
Average value, can be arranged according to the time interval and file fingerprint size that take the fingerprint, m is bigger, and what is taken the fingerprint is averaged
Time interval is bigger, and the length of file fingerprint is smaller, and shared memory space is smaller；The two of the absolute value of the difference of Min, Max
/ mono- is N, and the value of N is less than preset threshold value, and the value range of n is [- N, N].N value is bigger, cracks the complexity of broadcast source
Bigger, even if the code stream deliberately forged according to fingerprint also can not be watched normally, the content that can further increase broadcast source is non-
The difficulty that method is distorted.
For example, it is assumed that being divided into a logic unit of 8192+ (n) between taking the fingerprint, each logic unit is 188 bytes, n
Code stream matching in less than 2 seconds for the random value between -100 to 100,2M code rate is primary, and the space 10G can store 1024T's or so
The file fingerprint in Streaming Media source (broadcast source).
Third embodiment of the present invention is related to a kind of streaming media on demand and checks method of calibration.Third embodiment is second
It is further improved on the basis of embodiment, mainly thes improvement is that: in third embodiment of the invention, if not the
Primary matching, then since the successful position of current matching, skip subsequent 1st to the Min logic unit, to Min+1
A to the Max logic unit carries out real-time matching, in this way, it is possible to reduce calculation amount improves matching efficiency.
Specifically, in the present embodiment, matched if first time, and from first logic unit of broadcast source to the
The non-successful match of Max logic unit then stops playing broadcast source.Specifically, from buffering (or broadcasting) broadcast source is started
First logic unit start counting, if fingerprint successful match not yet after Max+1 logic unit of experience, assert the broadcasting
Source is illegally distorted, and cancels play the broadcast source immediately；If successful match, continue to compare next fingerprint.
If non-first time matches, since the successful position of current matching, skips subsequent 1st to Min and patrol
Volume unit, to Min+1 to the Max logic unit progress real-time matching, due to since the successful position of current matching, after
Continuous the 1st can not be extracted characteristic information to the Min logic unit, carry out fingerprint so skipping and not spending
Match, it is possible to reduce calculation amount improves matching efficiency.
The step of various methods divide above, be intended merely to describe it is clear, when realization can be merged into a step or
Certain steps are split, multiple steps are decomposed into, as long as comprising identical logical relation, all in the protection scope of this patent
It is interior；To adding inessential modification in algorithm or in process or introducing inessential design, but its algorithm is not changed
Core design with process is all in the protection scope of the patent.
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific embodiments of the present invention,
And in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.
Claims (5)
1. a kind of streaming media on demand checks method of calibration, which is characterized in that comprise the steps of:
The characteristic information of broadcast source is extracted, and generates the file fingerprint of the broadcast source；Wherein, comprising extremely in the file fingerprint
A few characteristic information and the corresponding play time of the characteristic information；The characteristic information is from the broadcast source
The piece segment information of extraction；
When the broadcast source is played, the characteristic information in the broadcast source and the file fingerprint is subjected to real-time matching,
If wherein it fails to match with the broadcast source for any one of characteristic information, stop playing the broadcast source；
It is described extract broadcast source characteristic information the step of in,
The characteristic information is extracted from the logic unit of the broadcast source with random interval；
The value range of the random interval is [Min, Max], and Min, Max are natural number, and the average value of Min and Max are according to institute
The size setting of file fingerprint is stated, the absolute value of the difference of Min, Max is less than preset threshold value.
2. streaming media on demand according to claim 1 checks method of calibration, which is characterized in that in the extraction broadcast source
In the step of characteristic information,
The length for controlling the characteristic information is less than or equal to the payload length of the logic unit.
3. streaming media on demand according to claim 1 checks method of calibration, which is characterized in that by the broadcast source and institute
It states in the step of characteristic information in file fingerprint carries out real-time matching,
It matches if first time, and is not matched into from first logic unit to the Max logic unit of the broadcast source
Function then stops playing the broadcast source.
4. streaming media on demand according to claim 1 checks method of calibration, which is characterized in that by the broadcast source and institute
It states in the step of characteristic information in file fingerprint carries out real-time matching,
If non-first time matches, since the successful position of current matching, subsequent 1st is skipped to the Min logic list
Member carries out real-time matching to Min+1 to the Max logic unit.
5. streaming media on demand according to claim 1 checks method of calibration, which is characterized in that the logic unit is described
Package or audio/video frames in Streaming Media.
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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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1719909A (en) * | 2005-07-15 | 2006-01-11 | 复旦大学 | Method for measuring audio-video frequency content change |
| CN101021888A (en) * | 2007-03-20 | 2007-08-22 | 陆小潮 | Monitoring device and method for digital multimedia content playing |
| 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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- 2015-12-28 CN CN201511003793.3A patent/CN105611326B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1719909A (en) * | 2005-07-15 | 2006-01-11 | 复旦大学 | Method for measuring audio-video frequency content change |
| CN101021888A (en) * | 2007-03-20 | 2007-08-22 | 陆小潮 | Monitoring device and method for digital multimedia content playing |
| 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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