CN103780860A - Screen recording method, device and system - Google Patents
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- CN103780860A CN103780860A CN201410041736.3A CN201410041736A CN103780860A CN 103780860 A CN103780860 A CN 103780860A CN 201410041736 A CN201410041736 A CN 201410041736A CN 103780860 A CN103780860 A CN 103780860A
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Abstract
The embodiment of the invention discloses a screen recording method. The method includes the first step of obtaining anti-counterfeiting codes and frame data from screen recording, wherein the number of the anti-counterfeiting codes is larger than or equal to the frame number of the frame data generated from screen recording, the second step of establishing the mapping relations between the frame data from screen recording and at least one anti-counterfeiting code respectively, and the third step of encapsulating the frame data from screen recording and the mapping relations corresponding to the frame data to be a screen recording file. The embodiment of the invention further discloses a screen recording device and system. The screen recording method, device and system can prevent screen recording from being tampered and ensure the authenticity or integrity of screen recording.
Description
Technical field
The application relates to areas of information technology, relates in particular to a kind of film recording method and corresponding equipment and system thereof.
Background technology
Along with the develop rapidly of information technology, people can operate various terminal equipments and carry out various tasks, then the result of operation terminal device are utilized.Such as, in the situation that network more and more becomes daily life, work important tool, can realize remote chat at local operation computer, can show shopping at network etc. by network implementation.Typically, people are in the time of operation terminal device, and terminal equipment is by some data automatically recording in operation terminal device process, to record " fact " and the corresponding result of operation.These data that are automatically recorded will will be brought into play very important effect under some scene, such as, prove some item as evidence.
But, these are the information data under quilt record in operation terminal device process, based on electronic information storage, the convenience that copies, forward, very easily be tampered, or in transmitting procedure, occur to change because of various cause specifics, thereby lose objectivity and primitiveness, had influence on the application of these information datas.For this reason, there is film recording technology in prior art, and this technology is recorded the process of operation terminal device in the mode of " video recording ", solidifies people's operation behavior, thereby increased the difficulty of distorting.But, distort difficulty increase and can not hinder the generation of distorting phenomenon, in actual application, aforesaid way still can not guarantee the authenticity and integrity of the screen message of recording.As can be seen here, provide a kind of film recording mechanism trusty to play an important role for the authenticity and integrity of guaranteeing video information.
Summary of the invention
For solving the problems of the technologies described above, the embodiment of the present application provides a kind of film recording method and corresponding equipment and system thereof, to guarantee authenticity or the integrality of film recording information.
The film recording method that the embodiment of the present application provides comprises:
Obtain the frame data of security code and film recording, the number of described security code is more than or equal to the frame number of the frame data of film recording generation;
Set up respectively the mapping relations between each frame data and at least one security code of film recording;
Each frame data of film recording and mapping relations corresponding to each frame data are encapsulated as to film recording file.
Preferably, the mapping relations between described each frame data and at least one security code of setting up respectively film recording specifically comprise:
In the data segment of each frame data of film recording, append at least one security code, or, for each frame data of film recording are respectively allocated to a few security code;
Describedly the frame data of film recording and mapping relations corresponding to each frame data be encapsulated as to film recording file specifically comprise:
Each frame data of the film recording of appending security code are encapsulated as to film recording file, or, each frame data of film recording and security code corresponding to each frame data are encapsulated as to film recording file.
Preferably, after film recording starts, the temporal information in each frame data of film recording is synchronizeed with standard time information, and described standard time information comprises time and/or the network standard time at national time service center.
Preferably, after film recording starts, show the temporal information in described security code and/or each frame data with independent window.
Preferably, in the time obtaining the frame data of film recording, obtain electronic environment information corresponding to moment that these frame data produce, described method also comprises:
In the time that each frame data of film recording, security code that each frame data are corresponding are encapsulated as to film recording, electronic environment Information encapsulation corresponding each frame data is entered to described film recording file.
Further preferably, the frame data that obtain film recording described in comprise:
The former frame frame data that obtain and rear frame frame data are compared, and after the described former frame frame data of storage, the part that rear frame frame data are changed with respect to former frame frame data is stored as the frame data of a rear frame.
Further preferably, the frame data that obtain film recording described in comprise:
Establishment virtual video card drives, and physics video card is shone upon;
By the region and the content that need in virtual video card screen printing to show, the described region of demonstration and the data assembling of content of needing become to frame data.
The application also provides a kind of film recording device, and this device comprises: acquiring unit, map unit and encapsulation unit, wherein:
Described acquiring unit, for obtaining the frame data of security code and film recording, the number of described security code is more than or equal to the frame number of the frame data of film recording;
Described map unit, for setting up respectively the mapping relations between each frame data and at least one security code of film recording;
Described encapsulation unit, for being encapsulated as film recording file by each frame data of film recording and mapping relations corresponding to each frame data.
Preferably, described map unit comprise appends subelement or distribute subelement, described in append subelement, append at least one security code for the data segment of the each frame data in film recording, described distribution subelement, is used to each frame data of film recording to be respectively allocated to a few security code;
Described encapsulation unit is specifically for each frame data of the film recording of appending security code are encapsulated as to film recording file, or each frame data of film recording and security code corresponding to each frame data are encapsulated as to film recording file.
The application also provides a kind of film recording system.This system comprises: server and client side, and described server comprises security code generation unit, described client comprises video recording unit, request unit, receiving element, map unit and encapsulation unit, wherein:
Described video recording unit, for screen is recorded a video, generates the frame data of film recording;
Described request unit, for sending and obtain security code request message to server;
Described receiving element, for receiving security code;
Described map unit, for setting up respectively the mapping relations between each frame data and at least one security code of film recording;
Described encapsulation unit, for being encapsulated as film recording file by each frame data of film recording and mapping relations corresponding to each frame data.
The embodiment of the present application is set up the mapping relations between frame data and the security code of film recording, and in film recording file, encapsulate this security code, because security code can play anti-fake effect, if in actual application, there is the change of film recording file, can whether change to be confirmed whether really to have occurred to distort by checking security code, thus the authenticity of assurance film recording file.And, because every frame data are all mapped at least one security code, can check and whether distort by frame one by one, thereby guarantee the authenticity of the every frame data of film recording file, guarantee thus the integrality of whole film recording file.In addition, all free attribute and electronic environment parameter informations of every frame data of film recording in the embodiment of the present application, thus make whole film recording file meet the instructions for use as objects such as evidences.Further, because the embodiment of the present application adopts virtual video card mapping, only intercept the screen area changing, improved the operating efficiency of film recording file generated, reduced memory space.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, the accompanying drawing the following describes is only some embodiment that record in the application, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the embodiment flow chart of the method for the application's film recording;
Fig. 2 is the application's demonstration security code and the independent window schematic diagram of temporal information;
Fig. 3 is the structured flowchart of the embodiment of the device of the application's film recording;
Fig. 4 is the structured flowchart of the embodiment of the system of the application's film recording.
Embodiment
In order to make those skilled in the art person understand better the technical scheme in the application, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the application's part embodiment, rather than whole embodiment.Based on the embodiment in the application, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all should belong to the scope of the application's protection.
Referring to Fig. 1, the figure shows the flow process of an embodiment of the method for the application's film recording.This flow process comprises:
Step S11: obtain the frame data of security code and film recording, the number of described security code is more than or equal to the frame number of the frame data of film recording generation;
After film recording starts, can constantly produce the data about the operational motion on screen, these data assemblings become frame data to be acquired, so that subsequent treatment.Security code has antiforge function, it can produce in this locality, also can produce by the webserver, such as, special security code generator is set on far-end server, in the time that film recording terminal needs security code, send the request of obtaining security code to this far-end server, the security code of generation is sent to film recording terminal by security code generator.Under normal circumstances, adopt the mode of far-end server generating anti-counterfeiting code, tracked because this mode can prevent effectively, make others cannot know the generation rule of security code, thereby can not obtain security code.Relation between the frame number of the number of security code and the frame data of film recording can be set as required, such as, under normal circumstances, need every frame data of film recording all to have corresponding security code, therefore, the number of security code at least should equal the frame data of frame data, certainly, in the situation that being greater than, can be the corresponding plural security codes of frame data.
Step S12: set up respectively the mapping relations between each frame data and at least one security code of film recording;
After getting the frame data and security code of film recording through abovementioned steps, can set up mapping relations between the two.By these mapping relations, can, in the time that decoding obtains the frame data of a frame, get the security code that these frame data are corresponding.
Step S13: each frame data of film recording and mapping relations corresponding to each frame data are encapsulated as to film recording file.
The present embodiment is packaged with each frame data and the mapping relations corresponding to each frame data of film recording in film recording file, on the one hand, film recording file is no longer only frame data itself, but include the mapping relations of each frame data and security code, this mode is that every frame data have been stamped uniqueness label, make film recording file in the time of the situation that occurs distorting, can be by again obtaining corresponding security code this security code and be encapsulated in the similarities and differences between the security code in film recording file and verify and whether really have " fact " of distorting relatively, thereby guarantee the authenticity of film recording by means of this mechanism.Whether on the other hand, the present embodiment " breaks the whole up into parts film recording file ", for each frame data are established to the mapping relations of security code, can be checked and be distorted by frame one by one, thereby guarantee the integrality of whole film recording by means of this mechanism.
Above-described embodiment needs to set up the mapping relations between each frame data and the security code of film recording in step S12, in actual application, can adopt various ways to set up mapping relations.For the application's technical characterictic is described more clearly; exemplarily provide two kinds of execution modes below; those skilled in the art, on this basis, can adopt other other modes that do not hinder the present application object to realize, and the mode of these expansions is all within the application's protection range.
One of execution mode: append security code in the data segment of each frame data of film recording." frame " has frame structure, generally includes control section and data segment part in frame structure, and the former is used to indicate the control information of this frame, and such as the original position of frame, end position, flag of frame etc., the latter is for filling the data of this frame.Based on this understanding, can in the data segment of every frame, increase security code, the security code that is about to get writes among the data segment of each frame.This mode makes each frame data of film recording itself comprise security code, and the mapping relations of frame data and security code can directly be embodied by the frame that this has appended security code so.Each frame data of film recording are carried out after this " transformation ", when the encapsulation of conducting frame data and corresponding mapping relations, can directly the frame data after " transformation " be encapsulated, the film recording file completing after encapsulation has comprised each frame data and corresponding mapping relations thereof.
In addition also it should be noted that for this execution mode: the application is not particularly limited the particular location of security code in the data segment of frame data.That is to say, security code can be placed on the beginning of the data segment of frame data, can be also mid portion, or ending, as long as the more specific location information of the security code more specific location information known of decoder when decoding when appending security code is consistent.Particularly, if security code appends the end at data segment, so in the time of the every frame data of decoding reduction, to the end place that can only read frame data itself that reads of film recording frame data, reading of security code only read to the one piece of data that the next position after the end of frame data itself starts.For the ease of data itself and the security code of identification frame data, in actual application, between the data of frame data itself and security code, can distinguish by flag bit is set, a flag bit (beginning flag position) is set in the previous position at security code placement location place, in the time that decoder detects this flag bit, know that the one piece of data starting from this mark is security code.Similarly, while being placed on the beginning of data segment for security code, an end flag bit can be set, when decoder is from data segment starting position, when this end flag bit detected, know that " data " till this flag bit place are security code, the data itself that " data " after this flag bit are frame data.While being placed on data segment middle for security code, a beginning flag position and end mark position should be set simultaneously, in the time beginning flag position and end mark position being detected, know that the data between two flag bits are security code, the data itself that remainder data is frame data.Obviously, except security code being appended in data segment, also security code can be appended to control section, its reason is similar.
Two of execution mode: for each frame data of film recording distribute respectively security code, that is to say, after each frame data get, the security code getting can be distributed to each frame data, between each frame data and security code, set up mapping relations like this, what this mapping relations were different from one of execution mode is, which is not directly security code to be placed among frame data, but distribute independently security code, when specific implementation, two storage areas can be set, a storage area is for storing the frame data of film recording, another storage area is used for storing security code, and guarantee that the frame number of frame data and the sequence number of security code are consistent.Set up in this way after mapping relations, each frame data of film recording and security code corresponding to each frame data can be encapsulated as to film recording file.
Above-mentioned two kinds of execution modes can respectively have pluses and minuses.For the first execution mode, security code is appended among frame data, becomes a part for frame data, like this in the time being encapsulated as film recording file, only there is the encapsulation between each Frame, thereby reduce the complexity of encapsulation, save the time of encapsulation, still, owing to security code need to being put among the data segment of frame data, need to open each Frame, increase the difficulty of Frame location, especially for decode procedure brings larger difficulty.For the second execution mode, between every frame due to security code and frame data, be self-existent, so only need to simply set up the corresponding relation between frame data and security code, one of a frame data frame need not be opened and put into security code, avoid the destruction that frame data are likely existed.But, when this mode makes follow-up encapsulation generate film recording file, not only relate to the encapsulation of film recording frame data, and relate to the encapsulation of mapping relations, this is the encapsulation of different nature of two classes, has increased the complexity of encapsulation, has extended packaging time.Based on above-mentioned two kinds of pluses and minuses that execution mode exists separately, in actual application, can select as required, such as, if when the frame number of the frame data of film recording file is less, can adopt the first execution mode, on the contrary, adopt the second execution mode.
Above-described embodiment is encapsulated into frame data and corresponding mapping relations among film recording file, owing to comprising temporal information in frame data, makes to be also encapsulated in film recording file temporal information so by encapsulation.But in actual application, often there is the inaccurate situation of local zone time, and the time for some purposes of film recording file (such as, as electronic evidence) will and important, therefore, the accuracy of assurance time can be guaranteed the authenticity of film recording file preferably.For this reason, the application is preferably after film recording starts, temporal information in each frame data of film recording is synchronizeed with standard time information, and the standard time information here can be the time at national time service center, can be also to arrive the network standard time by Network Capture.In the temporal information and standard time information synchronizing process guaranteed in each frame data, can adopt various ways to realize, such as, before film recording starts, first carry out time calibration one time, after startup screen video recording, guarantee the table status of walking of temporal information, be all correct time information by making the temporal information in every frame data like this.In addition, in order to make film recording process more directly perceived, can show the temporal information (shown in Figure 2) in security code and each frame data with independent window, can see the progress of film recording by this temporal information.Certainly, some other control buttons can also be set in this display window, such as, button, stop button etc. are recorded in film recording.
In above-described embodiment, in film recording file, encapsulate each frame frame data and corresponding mapping relations, still, in actual application, can also be encapsulated into other information based on other objects.Such as, in order to increase the objectivity of film recording, can also in film recording file, be encapsulated into the electronic environment information of current time.Electronic information has reflected the state in film recording process, specifically can comprise host computer system state (such as, daily record, process, operating system etc.), hardware parameter (such as, RAM (random access memory) card, CPU sequence number, hard disk sequence number, network interface card Mac address), network communication (such as, IP address, website record information, website route) etc. information.By by electronic environment Information encapsulation to the objectivity that has strengthened film recording in film recording file, improved the confidence level of film recording.
In above-described embodiment, be not limited to the obtain manner of frame data in film recording process, do not hinder although it is so the realization of the present application object, but in actual application, how obtaining frame data and obtaining which type of frame data is the key factors that concern the efficiency to film recording process.Do further explaination with regard to these two problems below.
Under normal circumstances, in film recording process, can obtain one by one frame data, after every acquisition one frame data, put it in interim buffer memory so that subsequent treatment.But in the time that the frame number that need to obtain frame data is quite large, every frame data all completely obtain and store, and will take a large amount of memory spaces, will expend a large amount of cpu resources in the time reading.In fact, as a continuous film recording process, it between every frame data, is not discrete data completely independently, between adjacent frame data, there is association, before and after this association is embodied in, two frame data had both had different data divisions, rear frame data also have identical data with respect to former frame data, the Data duplication identical to these, repeatedly storage, by storage resources a large amount of waste, for this reason, the application can get after two adjacent frame data, former frame data and rear frame data are compared, after determining, frame data are with respect to the differential section of former frame data, then after full storage former frame data, only a rear frame differential section is stored.In the time of decoding, restore after former frame data the data of a frame after can restoring according to the data of the differential section of former frame data and storage.Can reduce in large quantities in this way storage resources, such as, little if two frame data change, so only store several bytes.
Foregoing has been described and has been obtained the saving of which type of frame data for storage resources, obtains the mode of frame data below under describing in detail.In traditional film recording process, the form of film recording data is DBI(Dvevice-Independent Bitmap), the technology adopting is API film recording technology, image GDI function under this technology invoke user state is realized screenshotss, detailed process is: utilize all calling function in user's state gdi32.dll in API technical intercept system, obtain the area coordinate that screen picture refreshes or changes, then use the function bitblt in API to copy the ddb form bitmap of the screen area after refreshing or changing to internal memory, then, using function getbits is dbi bitmap by ddb bitmap-converted, finally compress, the operations such as storage or transmission.But there is shortcomings in this mode of obtaining several frame data: (1) under user's state, due to calling system function frequently, by causing the load of CPU excessive, thereby the systematic function of having influence on; (2) to using the application program of DirectDraw mode, because its direct manipulation display memory, hardware position piece shift, hardware is overlapping and the image manipulation such as exchange surface, having avoided GDI calls, now still adopt image GDI function under API technology invoke user state to realize screenshotss and make API technical failure, can not catch screen change, may cause some key message in film recording to be lost.For this reason, the application adopts virtual video card mechanism, first creating virtual video card drives, physics video card is shone upon, and the two memory mechanisms of employing, store the screen message catching in real time into two different regions: a information is for normal screen display, and another part of information is intercepted by virtual video card, the region that the needs of intercepting are shown and the data assembling of content become frame data simultaneously.This mode is the operation of directly shining upon on hardware layer video card, can receive and filter all screen displays, prevents that application program from being used DirectDraw and other display driver technical approach to get around, thereby ensures film recording information integrity.
Foregoing is described the application's film recording method in detail, and correspondingly, the application also provides a kind of embodiment of film recording device.Referring to Fig. 3, the figure shows the composition structure of a film recording device embodiment.This device comprises: acquiring unit 301, map unit 302 and encapsulation unit 303, wherein:
Acquiring unit 301, for obtaining the frame data of security code and film recording, the number of described security code is more than or equal to the data frame number of film recording;
Said apparatus embodiment sets up mapping relations between each frame data of film recording and security code, and in film recording file, encapsulate this security code, because security code can play anti-fake effect, if in actual application, there is the change of film recording file, can whether change to be confirmed whether really to have occurred to distort by checking security code, thus the authenticity of assurance film recording file.And, because every frame data are all mapped at least one security code, can check and whether distort by frame one by one, thereby guarantee the authenticity of the every frame data of film recording file, guarantee thus the integrality of whole film recording file.
Map unit in said apparatus embodiment adopts the mode of different foundation mappings in actual application, and the composition structure of its inside may change accordingly.Such as, map unit 302 can comprise that is appended a subelement 3021, data segment for the each frame data in film recording appends at least one security code, can avoid carrying out separately like this storage of security code, in the time specifically encapsulating, can directly each frame data of the film recording of appending security code be encapsulated as to film recording file at encapsulation unit.Except this mode that realizes map unit, map unit can also comprise that is distributed a subelement, be used to each frame data of film recording to be respectively allocated to a few security code, encapsulation unit is encapsulated as film recording file by each frame data of film recording and security code corresponding to each frame data in the time specifically encapsulating.These two kinds of various pluses and minuses of implementation, concrete condition can be referring to the description of preceding method part, for avoiding repetition, superfluous words no longer here.
In addition, the application also provides a kind of embodiment of film recording system.Referring to Fig. 4, the figure shows the composition structure of film recording system embodiment, this system comprises: server 41 and client 42, described server 41 comprises security code generation unit 411, described client 42 comprises video recording unit 421, request unit 422, receiving element 423, map unit 424 and encapsulation unit 425, wherein:
Receiving element 423, for receiving security code;
This system embodiment can obtain the function of preceding method embodiment and device embodiment equally.And the security code of this system embodiment generates on server, this is favourable has guaranteed file that film recording process the generates fairness as special-purpose.After the security code generation unit generating anti-counterfeiting code of server, buffer memory or store specially security code temporarily, like this in need to carrying out film recording when the checking of each frame data, can obtain security code from server, guarantee the authenticity of security code, and then be conducive to guarantee the authenticity and integrity of film recording file.
It should be noted that for convenience of description, while describing above device, system, be divided into various unit with function and describe respectively.Certainly, in the time implementing the application, the function of each unit can be realized in same or multiple software and/or hardware.As seen through the above description of the embodiments, those skilled in the art can be well understood to the mode that the application can add essential general hardware platform by software and realizes.In addition, the various modes of texturing of embodiment in this specification and embodiment adopt the mode of going forward one by one to describe, between each embodiment and its mode of texturing identical similar part mutually referring to, what the technical scheme of each embodiment or mode of texturing stressed is the difference real with other.Especially,, for device, system embodiment, because it is substantially similar in appearance to embodiment of the method, so describe fairly simplely, relevant part is referring to the part explanation of embodiment of the method.Embodiment described above is only schematic, the wherein said unit as separating component explanation can or can not be also physically to separate, the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed in multiple network element.Can select according to the actual needs some or all of module wherein to realize the object of the present embodiment scheme.Those of ordinary skills, in the situation that not paying creative work, are appreciated that and implement.
The application can be used in numerous general or special purpose computingasystem environment or configuration.For example: personal computer, server computer, handheld device or portable set, multicomputer system, the system based on microprocessor, programmable consumer-elcetronics devices, network PC, minicom, mainframe computer, comprise distributed computing environment (DCE) of above any system or equipment etc.
The application can describe in the general context of the computer executable instructions of being carried out by computer, for example program module.Usually, program module comprises and carries out particular task or realize routine, program, object, assembly, data structure of particular abstract data type etc.Also can in distributed computing environment (DCE), put into practice the application, in these distributed computing environment (DCE), be executed the task by the teleprocessing equipment being connected by communication network.In distributed computing environment (DCE), program module can be arranged in the local and remote computer-readable storage medium including memory device.
The above is only the application's embodiment; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the application's protection range.
Claims (10)
1. a film recording method, is characterized in that, described method comprises:
Obtain the frame data of security code and film recording, the number of described security code is more than or equal to the frame number of the frame data of film recording generation;
Set up respectively the mapping relations between each frame data and at least one security code of film recording;
Each frame data of film recording and mapping relations corresponding to each frame data are encapsulated as to film recording file.
2. method according to claim 1, is characterized in that, the mapping relations between described each frame data and at least one security code of setting up respectively film recording specifically comprise:
In the data segment of each frame data of film recording, append at least one security code, or, for each frame data of film recording are respectively allocated to a few security code;
Describedly the frame data of film recording and mapping relations corresponding to each frame data be encapsulated as to film recording file specifically comprise:
Each frame data of the film recording of appending security code are encapsulated as to film recording file, or, each frame data of film recording and security code corresponding to each frame data are encapsulated as to film recording file.
3. method according to claim 1, it is characterized in that, after film recording starts, the temporal information in each frame data of film recording is synchronizeed with standard time information, and described standard time information comprises time and/or the network standard time at national time service center.
4. method according to claim 3, is characterized in that, after film recording starts, shows the temporal information in described security code and/or each frame data with independent window.
5. according to the method described in any one in claim 1 to 4, it is characterized in that, in the time obtaining the frame data of film recording, obtain electronic environment information corresponding to moment that these frame data produce, described method also comprises:
In the time that each frame data of film recording and mapping relations corresponding to each frame data are encapsulated as to film recording file, electronic environment Information encapsulation corresponding each frame data is entered to described film recording file.
6. method according to claim 5, is characterized in that, described in obtain film recording frame data comprise:
The former frame frame data that obtain and rear frame frame data are compared, and after the described former frame frame data of storage, the part that rear frame frame data are changed with respect to former frame frame data is stored as the frame data of a rear frame.
7. method according to claim 5, is characterized in that, described in obtain film recording frame data comprise:
Establishment virtual video card drives, and physics video card is shone upon;
By the region and the content that need in virtual video card screen printing to show, the described region of demonstration and the data assembling of content of needing become to frame data.
8. a film recording device, is characterized in that, described device comprises: acquiring unit, map unit and encapsulation unit, wherein:
Described acquiring unit, for obtaining the frame data of security code and film recording, the number of described security code is more than or equal to the frame number of the frame data of film recording;
Described map unit, for setting up respectively the mapping relations between each frame data and at least one security code of film recording;
Described encapsulation unit, for being encapsulated as film recording file by each frame data of film recording and mapping relations corresponding to each frame data.
9. device according to claim 8, it is characterized in that, described map unit comprises appends subelement or distributes subelement, the described subelement that appends, data segment for the each frame data in film recording appends at least one security code, described distribution subelement, is used to each frame data of film recording to be respectively allocated to a few security code;
Described encapsulation unit is specifically for each frame data of the film recording of appending security code are encapsulated as to film recording file, or each frame data of film recording and security code corresponding to each frame data are encapsulated as to film recording file.
10. a film recording system, is characterized in that, this system comprises: server and client side, and described server comprises security code generation unit, described client comprises video recording unit, request unit, receiving element, map unit and encapsulation unit, wherein:
Described video recording unit, for screen is recorded a video, generates the frame data of film recording;
Described request unit, for sending and obtain security code request message to server;
Described receiving element, for receiving security code;
Described map unit, for setting up respectively the mapping relations between each frame data and at least one security code of film recording;
Described encapsulation unit, for being encapsulated as film recording file by each frame data of film recording and mapping relations corresponding to each frame data.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105007466A (en) * | 2015-07-23 | 2015-10-28 | 熊建民 | Surveillance video recording device capable of preventing film editing and recording method thereof |
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| CN105007466B (en) * | 2015-07-23 | 2019-04-19 | 熊建民 | Prevent the monitor video recording system and its method for recording of editing |
| CN106055205A (en) * | 2016-05-30 | 2016-10-26 | 北京金山安全软件有限公司 | Screen recording method and device |
| CN106055205B (en) * | 2016-05-30 | 2019-10-29 | 北京金山安全软件有限公司 | screen recording method and device |
| CN109324911A (en) * | 2018-09-21 | 2019-02-12 | 广州长鹏光电科技有限公司 | User behavior detects smart screen automatically and grabs screen system |
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