CN114157884A - Efficient cloud video cross-device screen projection method and system and storage medium - Google Patents
Efficient cloud video cross-device screen projection method and system and storage medium Download PDFInfo
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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
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
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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
- H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
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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
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
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- 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
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
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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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
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- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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- 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
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
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- H—ELECTRICITY
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- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
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Abstract
The invention discloses an efficient cross-device cloud video screen projection method, a system and a storage medium, wherein the method comprises the following steps: s01, constructing an image database, wherein the image database is used for encrypting and storing image data and playing records; s02, responding to an image screen projection request of the screen projection terminal, generating a key and an image data address which are in one-to-one correspondence with the image data, and issuing the key and the image data address to the screen projection terminal; s03, downloading the image data by the screen projection terminal according to the image data address, and then decrypting and playing the image data according to the secret key; s04, recording the continuous playing duration of the downloaded image data and the corresponding image data information by the screen projection terminal, generating a playing record and feeding the playing record back to the image database; the scheme is reliable to implement, convenient to operate and good in stability.
Description
Technical Field
The invention relates to the technical field of image playing, in particular to an efficient cross-device cloud video screen projection method, system and storage medium.
Background
The image projection screen is taken as a popular data playing and transmitting technology at present, the quantity of high-quality playing materials is increased along with the increase of the playing materials, the image projection screen also becomes a more and more popular playing means for multiple users, however, on the basis of the mass playing materials, abnormal playing contents doped in the mass playing materials are increased day by day, particularly, image contents related to yellow, terrorism or explosion are mixed in the mass playing materials, the social negative image brought by the abnormal playing contents is very huge, although most of current social media and image service platforms are provided with an image auditing mechanism, most of the abnormal playing contents are subjected to post supervision, and when an image data point is played at a projection screen terminal, the materials are possibly replaced, in addition, partial image data subjected to screen projection has the problem of recording and reverse selling, and the method also brings certain enthusiasm and profit to the creativity of the image data, therefore, how to improve the auditing reliability of the image projection screen playing content and the effectiveness of data security and anti-counterfeiting is a topic with practical significance.
Disclosure of Invention
In view of the above, the present invention provides an efficient cloud video cross-device screen projection method, system and storage medium with reliable implementation, convenient operation and good stability.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
an efficient cross-device cloud video screen projection method comprises the following steps:
s01, constructing an image database, wherein the image database is used for encrypting and storing image data and playing records;
s02, responding to an image screen projection request of the screen projection terminal, generating a key and an image data address which are in one-to-one correspondence with the image data, and issuing the key and the image data address to the screen projection terminal;
s03, downloading the image data by the screen projection terminal according to the image data address, and then decrypting and playing the image data according to the secret key;
and S04, recording the continuous playing time of the downloaded image data and the corresponding image data information by the screen projection terminal, generating a playing record and feeding the playing record back to the image database.
As a possible implementation manner, in S01, the image data is approved image data, and the method for auditing includes:
s021, acquiring image data to be audited, dividing the image data into image frames, and then performing character content extraction and image feature positioning on the image frames to generate character data to be audited and image data to be audited;
s022, importing the character data to be detected and the image data to be detected into a detection neural network for detection to obtain detection results corresponding to the character data to be detected and the image data to be detected one by one;
s023, obtaining all detection results of a single image data to be audited, outputting a compliance conclusion as a detection result when all the detection results accord with a preset condition, encrypting the corresponding image data and warehousing the image data into an image database, and outputting the character data to be inspected and/or the image data to be inspected and the non-compliance conclusion which do not accord with the preset condition as the detection result when the detection results do not accord with the preset condition.
As a preferred implementation choice, it is preferable that the training method for detecting the neural network in S02 is: collecting training materials, marking the training materials, then leading the training materials and the marking results into a neural network for training, and obtaining a detection neural network after the model converges, wherein the training materials comprise character training materials and image characteristic training materials.
As a preferred implementation choice, in S02, preferably, the acquired image data to be audited is originated from active uploading by a personal user, active uploading by an enterprise organization, or capturing data by the internet, and when the image data is originated from active uploading by a personal user and active uploading by an enterprise organization, the personal user and the enterprise organization are both registered with a unique ID;
the abnormal data generated in S03 is fed back to the backend server, and when the image data is uploaded by an individual user or an enterprise organization, the ID or IP address uploaded by the image data is also recorded.
As a preferred implementation option, S023 further comprises, preferably: when the image data is put into the image database, the image data is numbered and the information of the image data in the image database is extracted to generate a program list, the program list is issued to the screen projection terminal according to the preset time frequency, wherein, when the program list is issued, the program list code of the screen projection terminal is also acquired,
when the screen projection terminal returns to be empty, the newly generated program list is directly issued to the screen projection terminal,
when the screen projection terminal returns the existing program list codes, the newly generated program list is subjected to content matching with the program list already owned by the screen projection terminal to obtain distinguishing information, new and/or deleted data information is generated according to the distinguishing information and is sent to the screen projection terminal, and the screen projection terminal performs information adjustment and code updating;
in S02, the screen projection terminal initiates an image screen projection request according to the program list.
As a preferred implementation choice, preferably, S02 further includes connecting the screen projection terminal, acquiring screen projection terminal information, and generating a unique code corresponding to the screen projection terminal, where the code is a randomly generated multi-bit digital code;
when responding to an image screen projection request of the screen projection terminal, generating anti-counterfeiting information corresponding to the screen projection terminal according to the code of the screen projection terminal;
in the step S03, when the screen projection terminal downloads the image data according to the image data address, the anti-counterfeit information is added to the image data and is played together when the screen projection terminal plays.
As a preferred implementation choice, in S02, the method for generating the anti-counterfeiting information preferably includes:
acquiring one image frame of the image data, acquiring the resolution of the image frame, and setting the resolution as H multiplied by L, wherein H is the number of pixels in the vertical direction of the image frame, and L is the number of pixels in the horizontal direction of the image frame;
according to the resolution of the image frame, generating a specification of H1×L1The round-corner rectangular block is adjusted to be gray and set as an anti-counterfeiting color block, wherein H1＝0.005～0.01H，L1＝0.005～0.01L；
Acquiring a code of a screen projection terminal, and then, independently dividing the code and sequentially displaying anti-counterfeiting color blocks according to the divided code numbers at intervals of a time axis to generate an anti-counterfeiting image, wherein the number 0 in the code represents the interval of 10s, other non-0 numbers are real second values, in the anti-counterfeiting image, the time interval of seconds between the first appearance of the anti-counterfeiting color block and the second appearance of the anti-counterfeiting color block is equal to the first bit of the code of the screen projection terminal, the time interval of seconds between the third appearance of the anti-counterfeiting color block and the second appearance of the anti-counterfeiting color block is equal to the second bit of the code of the screen projection terminal, and the time interval of seconds between the last appearance of the anti-counterfeiting color block and the last appearance of the anti-counterfeiting color block is equal to the last bit of the code of the screen projection terminal;
in the step S04, when the screen projection terminal downloads the image data according to the image data address, the anti-counterfeit information is added to the image data in a manner of merging the video tracks and is displayed at the corners of the image data, and is played together when the screen projection terminal plays.
As a preferred implementation option, in S02, the anti-counterfeit images are preferably inserted into the image data at intervals and displayed at the corners of the image data, the anti-counterfeit images inserted into the image data share an image time track with the image data, and when the anti-counterfeit images are played to the corresponding time track, the anti-counterfeit images are played together.
Based on the above scheme, the invention further provides an efficient cloud video cross-device screen projection device, which comprises:
the server is used for constructing an image database, auditing the image data and warehousing the image data meeting preset conditions into the image database, and the image database is also used for storing playing records;
the data processing module is used for generating a secret key, an image data address and anti-counterfeiting information which are in one-to-one correspondence with the image data, and adding the anti-counterfeiting information into the image data when the screen projection terminal downloads the image data;
the data scheduling unit is used for responding to an image screen projection request of the screen projection terminal and issuing the key and the image data address which are in one-to-one correspondence with the image data to the screen projection terminal;
the screen projection terminal is used for downloading the image data according to the image data address, decrypting the image data according to the secret key and playing the decrypted image data;
and the data feedback module is used for recording the continuous playing time length of the downloaded image data and the corresponding image data information of the screen projection terminal, generating a playing record and feeding the playing record back to the image database.
Based on the above scheme, the present invention further provides a computer-readable storage medium, where at least one instruction, at least one program, a code set, or an instruction set is stored in the storage medium, and the at least one instruction, at least one program, a code set, or an instruction set is loaded by a processor and executed to implement the above efficient cloud video cross-device screen projection method.
By adopting the technical scheme, compared with the prior art, the invention has the beneficial effects that: in addition, the playing of the image data is recorded and stored in the image database, so that the program type priority sequencing of a program list of the screen projection terminal is facilitated, a screen projection terminal user can preferentially receive or look up the image data information of the favorite type of the screen projection terminal as far as possible, and the playing efficiency and experience of the cloud video screen projection are improved; the image data is added with the specially customized anti-counterfeiting information, so that the image data can be ensured, the technical effect of tracing the screen projection terminal or a user of the screen projection terminal is achieved when the image data is recorded in a stolen mode or pirated and transmitted by other technical means, and a technical protection and anti-infringement strategy is provided for the transmission of the image data.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow diagram of a schematic implementation of the process of the present invention;
FIG. 2 is a schematic diagram of a system according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be noted that the following examples are only illustrative of the present invention, and do not limit the scope of the present invention. Similarly, the following examples are only some but not all examples of the present invention, and all other examples obtained by those skilled in the art without any inventive work are within the scope of the present invention.
As shown in fig. 1, the method for cross-device screen projection of the efficient cloud video includes:
s01, constructing an image database, wherein the image database is used for encrypting and storing image data and playing records;
s02, responding to an image screen projection request of the screen projection terminal, generating a key and an image data address which are in one-to-one correspondence with the image data, and issuing the key and the image data address to the screen projection terminal;
s03, downloading the image data by the screen projection terminal according to the image data address, and then decrypting and playing the image data according to the secret key;
and S04, recording the continuous playing time of the downloaded image data and the corresponding image data information by the screen projection terminal, generating a playing record and feeding the playing record back to the image database.
As a possible implementation manner, in S01, the image data is approved image data, and the method for auditing includes:
s021, acquiring image data to be audited, dividing the image data into image frames, and then performing character content extraction and image feature positioning on the image frames to generate character data to be audited and image data to be audited;
s022, importing the character data to be detected and the image data to be detected into a detection neural network for detection to obtain detection results corresponding to the character data to be detected and the image data to be detected one by one;
s023, obtaining all detection results of a single image data to be audited, outputting a compliance conclusion as a detection result when all the detection results accord with a preset condition, encrypting the corresponding image data and warehousing the image data into an image database, and outputting the character data to be inspected and/or the image data to be inspected and the non-compliance conclusion which do not accord with the preset condition as the detection result when the detection results do not accord with the preset condition.
In this embodiment, as a preferred implementation choice, preferably, the training method for detecting a neural network in S02 is: collecting training materials, marking the training materials, then leading the training materials and the marking results into a neural network for training, and obtaining a detection neural network after the model converges, wherein the training materials comprise character training materials and image characteristic training materials.
In order to facilitate tracing and monitoring of video data, as a preferred implementation choice, in S02, preferably, the acquired image data to be audited is from active uploading by a personal user, active uploading by an enterprise organization, or capturing by internet data, and when the image data is from active uploading by a personal user and active uploading by an enterprise organization, unique IDs are registered by the personal user and the enterprise organization;
the abnormal data generated in S03 is fed back to the backend server, and when the image data is uploaded by an individual user or an enterprise organization, the ID or IP address uploaded by the image data is also recorded.
In order to facilitate the video data on demand, in this embodiment, as a preferred implementation choice, S023 further includes: when the image data is put into the image database, the image data is numbered and the information of the image data in the image database is extracted to generate a program list, the program list is issued to the screen projection terminal according to the preset time frequency, wherein, when the program list is issued, the program list code of the screen projection terminal is also acquired,
when the screen projection terminal returns to be empty, the newly generated program list is directly issued to the screen projection terminal,
when the screen projection terminal returns the existing program list codes, the newly generated program list is subjected to content matching with the program list already owned by the screen projection terminal to obtain distinguishing information, new and/or deleted data information is generated according to the distinguishing information and is sent to the screen projection terminal, and the screen projection terminal performs information adjustment and code updating;
in S02, the screen projection terminal initiates an image screen projection request according to the program list.
In the aspect of image data anti-counterfeiting, in the present scheme, as a preferred implementation choice, preferably, S02 further includes connecting the screen projection terminal, acquiring information of the screen projection terminal and correspondingly generating a unique code corresponding to the screen projection terminal, where the code is a randomly generated multi-bit digital code;
when responding to an image screen projection request of the screen projection terminal, generating anti-counterfeiting information corresponding to the screen projection terminal according to the code of the screen projection terminal;
in the step S03, when the screen projection terminal downloads the image data according to the image data address, the anti-counterfeit information is added to the image data and is played together when the screen projection terminal plays.
As a preferred implementation choice, in S02, the method for generating the anti-counterfeiting information preferably includes:
acquiring one image frame of the image data, acquiring the resolution of the image frame, and setting the resolution as H multiplied by L, wherein H is the number of pixels in the vertical direction of the image frame, and L is the number of pixels in the horizontal direction of the image frame;
according to the resolution of the image frame, generating a specification of H1×L1The round-corner rectangular block is adjusted to be gray and set as an anti-counterfeiting color block, wherein H1＝0.005～0.01H，L1＝0.005～0.01L；
Acquiring a code of a screen projection terminal, and then, independently dividing the code and sequentially displaying anti-counterfeiting color blocks according to the divided code numbers at intervals of a time axis to generate an anti-counterfeiting image, wherein the number 0 in the code represents the interval of 10s, other non-0 numbers are real second values, in the anti-counterfeiting image, the time interval of seconds between the first appearance of the anti-counterfeiting color block and the second appearance of the anti-counterfeiting color block is equal to the first bit of the code of the screen projection terminal, the time interval of seconds between the third appearance of the anti-counterfeiting color block and the second appearance of the anti-counterfeiting color block is equal to the second bit of the code of the screen projection terminal, and the time interval of seconds between the last appearance of the anti-counterfeiting color block and the last appearance of the anti-counterfeiting color block is equal to the last bit of the code of the screen projection terminal;
in the step S04, when the screen projection terminal downloads the image data according to the image data address, the anti-counterfeit information is added to the image data in a manner of merging the video tracks and is displayed at the corners of the image data, and is played together when the screen projection terminal plays.
As a preferred implementation option, in S02, the anti-counterfeit images are preferably inserted into the image data at intervals and displayed at the corners of the image data, the anti-counterfeit images inserted into the image data share an image time track with the image data, and when the anti-counterfeit images are played to the corresponding time track, the anti-counterfeit images are played together.
As shown in fig. 2, based on the above scheme, the present invention further provides an efficient cloud video cross-device screen projection apparatus, including:
the server is used for constructing an image database, auditing the image data and warehousing the image data meeting preset conditions into the image database, and the image database is also used for storing playing records;
the data processing module is used for generating a secret key, an image data address and anti-counterfeiting information which are in one-to-one correspondence with the image data, and adding the anti-counterfeiting information into the image data when the screen projection terminal downloads the image data;
the data scheduling unit is used for responding to an image screen projection request of the screen projection terminal and issuing the key and the image data address which are in one-to-one correspondence with the image data to the screen projection terminal;
the screen projection terminal is used for downloading the image data according to the image data address, decrypting the image data according to the secret key and playing the decrypted image data;
and the data feedback module is used for recording the continuous playing time length of the downloaded image data and the corresponding image data information of the screen projection terminal, generating a playing record and feeding the playing record back to the image database.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be substantially or partially implemented in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only a part of the embodiments of the present invention, and not intended to limit the scope of the present invention, and all equivalent devices or equivalent processes performed by the present invention through the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An efficient cross-device screen projection method for cloud videos is characterized by comprising the following steps:
s01, constructing an image database, wherein the image database is used for encrypting and storing image data and playing records;
s02, responding to an image screen projection request of the screen projection terminal, generating a key and an image data address which are in one-to-one correspondence with the image data, and issuing the key and the image data address to the screen projection terminal;
s03, downloading the image data by the screen projection terminal according to the image data address, and then decrypting and playing the image data according to the secret key;
and S04, recording the continuous playing time of the downloaded image data and the corresponding image data information by the screen projection terminal, generating a playing record and feeding the playing record back to the image database.
2. The method for high-efficiency cloud video screen projection across equipment as claimed in claim 1, wherein in S01, the image data is audited image data, and the auditing method includes:
s021, acquiring image data to be audited, dividing the image data into image frames, and then performing character content extraction and image feature positioning on the image frames to generate character data to be audited and image data to be audited;
s022, importing the character data to be detected and the image data to be detected into a detection neural network for detection to obtain detection results corresponding to the character data to be detected and the image data to be detected one by one;
s023, obtaining all detection results of a single image data to be audited, outputting a compliance conclusion as a detection result when all the detection results accord with a preset condition, encrypting the corresponding image data and warehousing the image data into an image database, and outputting the character data to be inspected and/or the image data to be inspected and the non-compliance conclusion which do not accord with the preset condition as the detection result when the detection results do not accord with the preset condition.
3. The high-efficiency cloud video cross-device screen projection method of claim 2, wherein the training method for detecting the neural network in S02 is as follows: collecting training materials, marking the training materials, then leading the training materials and the marking results into a neural network for training, and obtaining a detection neural network after the model converges, wherein the training materials comprise character training materials and image characteristic training materials.
4. The efficient cross-device cloud video screen projection method according to claim 2, wherein in S02, the acquired image data to be audited is from personal user active upload, enterprise organization active upload or internet data capture, and when the image data from personal user active upload and enterprise organization active upload, the personal user and enterprise organization are both registered with a unique ID;
the abnormal data generated in S03 is fed back to the backend server, and when the image data is uploaded by an individual user or an enterprise organization, the ID or IP address uploaded by the image data is also recorded.
5. The high-efficiency cloud video cross-device screen projection method according to one of claims 2 to 4, wherein S023 further comprises: when the image data is put into the image database, the image data is numbered and the information of the image data in the image database is extracted to generate a program list, the program list is issued to the screen projection terminal according to the preset time frequency, wherein, when the program list is issued, the program list code of the screen projection terminal is also acquired,
when the screen projection terminal returns to be empty, the newly generated program list is directly issued to the screen projection terminal,
when the screen projection terminal returns the existing program list codes, the newly generated program list is subjected to content matching with the program list already owned by the screen projection terminal to obtain distinguishing information, new and/or deleted data information is generated according to the distinguishing information and is sent to the screen projection terminal, and the screen projection terminal performs information adjustment and code updating;
in S02, the screen projection terminal initiates an image screen projection request according to the program list.
6. The method for cross-device screen projection of high-efficiency cloud video according to claim 5, wherein S02 further comprises connecting a screen projection terminal, acquiring information of the screen projection terminal and generating a unique code corresponding to the screen projection terminal accordingly, wherein the code is a randomly generated multi-bit digital code;
when responding to an image screen projection request of the screen projection terminal, generating anti-counterfeiting information corresponding to the screen projection terminal according to the code of the screen projection terminal;
in the step S03, when the screen projection terminal downloads the image data according to the image data address, the anti-counterfeit information is added to the image data and is played together when the screen projection terminal plays.
7. The high-efficiency cloud video cross-device screen projection method according to claim 6, wherein in S02, the anti-counterfeiting information generation method comprises:
acquiring one image frame of the image data, acquiring the resolution of the image frame, and setting the resolution as H multiplied by L, wherein H is the number of pixels in the vertical direction of the image frame, and L is the number of pixels in the horizontal direction of the image frame;
according to the resolution of the image frame, generating a specification of H1×L1The round-corner rectangular block is adjusted to be gray and set as an anti-counterfeiting color block, wherein H1＝0.005～0.01H，L1＝0.005～0.01L；
Acquiring a code of a screen projection terminal, and then, independently dividing the code and sequentially displaying anti-counterfeiting color blocks according to the divided code numbers at intervals of a time axis to generate an anti-counterfeiting image, wherein the number 0 in the code represents the interval of 10s, other non-0 numbers are real second values, in the anti-counterfeiting image, the time interval of seconds between the first appearance of the anti-counterfeiting color block and the second appearance of the anti-counterfeiting color block is equal to the first bit of the code of the screen projection terminal, the time interval of seconds between the third appearance of the anti-counterfeiting color block and the second appearance of the anti-counterfeiting color block is equal to the second bit of the code of the screen projection terminal, and the time interval of seconds between the last appearance of the anti-counterfeiting color block and the last appearance of the anti-counterfeiting color block is equal to the last bit of the code of the screen projection terminal;
in the step S04, when the screen projection terminal downloads the image data according to the image data address, the anti-counterfeit information is added to the image data in a manner of merging the video tracks and is displayed at the corners of the image data, and is played together when the screen projection terminal plays.
8. The method as claimed in claim 7, wherein in S02, the anti-counterfeit images are inserted into the image data at intervals and displayed at the corners of the image data, the anti-counterfeit images inserted into the image data share an image time track with the image data, and when the anti-counterfeit images are played to the corresponding time track, the anti-counterfeit images are played together.
9. An efficient cloud video cross-device screen projection device is characterized by comprising:
the server is used for constructing an image database, auditing the image data and warehousing the image data meeting preset conditions into the image database, and the image database is also used for storing playing records;
the data processing module is used for generating a secret key, an image data address and anti-counterfeiting information which are in one-to-one correspondence with the image data, and adding the anti-counterfeiting information into the image data when the screen projection terminal downloads the image data;
the data scheduling unit is used for responding to an image screen projection request of the screen projection terminal and issuing the key and the image data address which are in one-to-one correspondence with the image data to the screen projection terminal;
the screen projection terminal is used for downloading the image data according to the image data address, decrypting the image data according to the secret key and playing the decrypted image data;
and the data feedback module is used for recording the continuous playing time length of the downloaded image data and the corresponding image data information of the screen projection terminal, generating a playing record and feeding the playing record back to the image database.
10. A computer-readable storage medium, characterized in that: the storage medium stores at least one instruction, at least one program, a code set, or a set of instructions, which is loaded and executed by a processor to implement the high-efficiency cloud video cross-device screen projection method according to one of claims 1 to 8.
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