CN109862424A - Video playing method and device and electronic equipment - Google Patents
Video playing method and device and electronic equipment Download PDFInfo
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- CN109862424A CN109862424A CN201910253180.7A CN201910253180A CN109862424A CN 109862424 A CN109862424 A CN 109862424A CN 201910253180 A CN201910253180 A CN 201910253180A CN 109862424 A CN109862424 A CN 109862424A
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Abstract
The application provides a video playing method, a video playing device and electronic equipment, wherein the method comprises the following steps: the method comprises the steps of obtaining a video playing request containing a video file identifier, obtaining a video file corresponding to the video file identifier, obtaining a current playing position and a target playing position of the video file, obtaining a decryption key of an encrypted byte between the current playing position and the target playing position, decrypting the encrypted byte according to the decryption key and playing the decrypted byte. Therefore, the local decrypted temporary file is not generated for video decryption playing under the condition that the video fluency is not influenced, and the safety is high.
Description
Technical field
This application involves video processing art field more particularly to a kind of video broadcasting method, device and electronic equipments.
Background technique
In general, video is encrypted to improve the safety of video.Therefore, it is necessary to encrypted video is decrypted
It can just play out afterwards.In the related technology, be sent to after encrypted video being decrypted by server beyond the clouds client into
Row plays either to download to encrypted video after client to be decrypted and generates interim buffered video file and play out, so
And the interim buffered video file that either decryption generates during being sent to client of the video after decryption all exists again
The risk of system, safety are relatively low.
Summary of the invention
The application is intended to solve at least some of the technical problems in related technologies.
For this purpose, the application proposes a kind of video broadcasting method, after solving the decryption of server beyond the clouds in the prior art
Video be then forwarded to the risk that the interim buffered video file that either decryption generates during client all has duplication,
The relatively low technical problem of safety.
The application proposes a kind of video play device.
The application proposes a kind of electronic equipment.
The application proposes a kind of computer readable storage medium.
The application first aspect embodiment proposes a kind of video broadcasting method, comprising:
Obtain the video playing request comprising video file mark；
Obtain video file corresponding with video file mark；
Obtain the current play position and target play position of the video file；
The decruption key of encrypted byte between the current play position and the target play position is obtained, and according to institute
It states decruption key and the encrypted byte is decrypted and is played.
Optionally, as the first possible implementation of the application first aspect, the video text is obtained described
Before the current play position and target play position of part, further includes:
Obtain the file size of the video file；
According to the file size, one or more described mesh is set in the video file according to preset mode
Mark play position.
Optionally, described to obtain the video file as second of possible implementation of the application first aspect
Current play position and target play position, comprising:
The current play position and the target play position are obtained by application programming interface.
Optionally, described according to the decruption key as the third possible implementation of the application first aspect
The encrypted byte is decrypted and is played, comprising:
The encrypted byte is decrypted according to the decruption key, obtains played data；
The played data is sent to destination player by application programming interface.
Optionally, as the 4th kind of possible implementation of the application first aspect, the acquisition is described currently playing
The decruption key of encrypted byte between position and the target play position, comprising:
Preset key database is inquired, decruption key corresponding with video file mark is obtained.
The application second aspect embodiment proposes a kind of video play device, which includes:
First obtains module, for obtaining the video playing request comprising video file mark；
Second obtains module, for obtaining video file corresponding with video file mark；
Third obtains module, for obtaining the current play position and target play position of the video file；
4th obtains module, for obtaining encrypted byte between the current play position and the target play position
Decruption key；
Processing module, for the encrypted byte to be decrypted and played according to the decruption key.
Optionally, as the first possible implementation of the application second aspect, the third obtains module, specifically
For:
The current play position and the target play position are obtained by application programming interface.
Optionally, as second of possible implementation of the application second aspect, the processing module is specific to use
In:
The encrypted byte is decrypted according to the decruption key, obtains played data；
The played data is sent to destination player by application programming interface.
Optionally, module is obtained as the third possible implementation of the application second aspect, the described 4th, specifically
For:
Play time is determined according to the encrypted byte；
Preset cipher key store corresponding with video file mark is inquired, decryption corresponding with the play time is obtained
Key.
Optionally, module is obtained as the 4th kind of possible implementation of the application second aspect, the described 4th, specifically
It is also used to:
Preset key database is inquired, decruption key corresponding with video file mark is obtained.
The application third aspect embodiment proposes a kind of electronic equipment, comprising: memory, processor and is stored in storage
On device and the computer program that can run on a processor, when the processor executes described program, realize described in first aspect
Video broadcasting method.
The application fourth aspect embodiment proposes a kind of computer readable storage medium, is stored thereon with computer journey
Sequence when the program is executed by processor, realizes video broadcasting method described in first aspect.
Technical solution provided by the embodiment of the present application, may include it is following the utility model has the advantages that
The video playing request comprising video file mark is obtained, video file corresponding with video file mark is obtained,
The current play position and target play position of video file are obtained, obtains and adds between current play position and target play position
The decruption key of close byte, and encrypted byte is decrypted and is played according to decruption key.Hereby it is achieved that not influencing video
The temporary file after not generating local decryption is played in the case where fluency to decryption of video, it is highly-safe.
Detailed description of the invention
The application is above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is a kind of flow diagram of video broadcasting method provided by the embodiment of the present application；
Fig. 2 is the flow diagram of another kind video broadcasting method provided by the embodiment of the present application；
Fig. 3 is a kind of structural schematic diagram of video play device provided by the embodiments of the present application；
Fig. 4 is the structural schematic diagram of another kind video play device provided by the embodiment of the present application；And
Fig. 5 is the structural schematic diagram of the application electronic equipment one embodiment.
Specific embodiment
Embodiments herein is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the application, and should not be understood as the limitation to the application.
Below with reference to the accompanying drawings the video broadcasting method, device and electronic equipment of the embodiment of the present application are described.
Fig. 1 is a kind of flow diagram of video broadcasting method provided by the embodiment of the present application.
As shown in Figure 1, method includes the following steps:
Step 101, the video playing request comprising video file mark is obtained.
Step 102, video file corresponding with video file mark is obtained.
In practical applications, user can send video by clicking or carrying out the mode such as pulling down to currently playing interface
Playing request.
It is understood that video playing request is identified comprising video file, video file is identified for determining
Corresponding video file, that is to say, that different video identifiers corresponds to different video files, can be true by the video identifier
Fixed unique video file.
Specifically, after getting comprising the video playing request of video file mark, video playing request is solved
Analysis obtains video file mark, lookup and view in preset file (local folders) either corresponding cloud server
Frequency file identifies corresponding video file.
It is understood that video file can be what encryption was also possible to not encrypt, the video file of encryption can be with
It is partial document encryption etc..
The video broadcasting method that the application proposes is directed in the prior art server beyond the clouds and carries out encrypted video
The interim buffering being then forwarded to during client or encrypted video is decrypted in client generation after decryption
All there is the risk of duplication in video file, to propose to decrypt in memory when playing, do not generate local temporary files, safety
It is high.
That is, the video file in the video broadcasting method of the proposition of the application is encryption, the video file of encryption
It can be after cloud server encrypts one or more video file by preset encryption key and store beyond the clouds,
It is also possible to be stored in this after local server encrypts one or more video file by preset encryption key
Ground.Wherein, preset encryption key can be selected according to the actual application.
In order to distinguish encrypted video file and unencryption video file, can be inserted by the preset field in video file
Enter encryption identification for identification, for example, exclusive or encryption is carried out to preceding 1024 bytes of video file, and in video file
Header fields in be inserted into the encryption identification of such as 0xACAB.
Step 103, the current play position and target play position of video file are obtained.
Byte is read in video file in sequence it is understood that defaulting in video file playing process
Take broadcasting.
It should be noted that target play position can be pre-set, as a kind of possible implementation, for example scheme
Shown in 2, comprising:
Step 201, the file size of video file is obtained.
Step 202, one or more target is arranged in video file according to preset mode according to file size to broadcast
Put position.
Specifically, the file size of available video file, according to file size according to preset mode in video text
One or more target play position is set in part, for example is 1024 bytes, one target is set according to every 128 bytes
Position.
It should be noted that can also analyze the scene information in video file, not according to different scenes setting
Same target position.
In one embodiment of the application, when user may need to jump to corresponding during watching video
Between point play out, therefore the video comprising current play position mark can be sent by voice command or manual mode and be broadcast
Jump request is put, after obtaining the video playing jump request comprising current play position mark, according to current play position mark
Know the current play position for determining video file.
Step 104, the decruption key of encrypted byte between current play position and target play position is obtained, and according to solution
Close key pair encryption byte is decrypted and plays.
Specifically, for the video file of encryption, there are encrypted words between current play position and target play position
When section, encrypted byte can be decrypted and be played by corresponding decruption key.
It is understood that the decruption key for obtaining encrypted byte between current play position and target play position it
Before, it is also necessary to judge between current play position and target play position with the presence or absence of encrypted byte.
If video file is whole encryption, it is determined that whole bytes between current play position and target play position are
Encrypted byte；
If video file is Partial encryption, currently playing byte is determined according to current play position, is played according to target
Position determines that target plays byte, and is worked as according to currently playing byte, target broadcasting byte and the determination of preparatory encrypted byte section
The preceding encrypted byte played between byte and target broadcasting byte.
For example, Partial encryption is carried out to video file, for example chooses the 20th byte to the word between 60 bytes
Section is encrypted, and is chosen the 80th byte to the byte between 100 bytes for another example and is encrypted, at this moment can be by working as
Preceding play position and target play position are analyzed, for example determine that current play position is the 30th byte, and target plays position
It is set to the 50th byte, can also determine that whole bytes between current play position and target play position are encrypted byte,
Determine that current play position is the 10th byte for another example, target play position is that the 30th byte then determines currently playing position
The encrypted byte between target play position is set as the 20th byte to the 30th byte.
Wherein, it can be one or more for same video file decruption key, it can be according to practical with applying
It is configured, is illustrated below when encryption:
The first example determines play time according to encrypted byte, inquires preset corresponding close with video file mark
Key library obtains decruption key corresponding with play time.
Specifically, the content in video file can be analyzed, determines that the i.e. different play time of different content is logical
It crosses different encryption keys to be encrypted, so that different encryption keys be needed to be decrypted, multiple decruption keys can be deposited
Chu Yu video file identifies in corresponding cipher key store, corresponds to different decruption keys by different broadcasting contents as a result, into
Row improves the safety of video playing.
Second of example inquires preset key database, obtains decruption key corresponding with video file mark.
Specifically, in order to improve the efficiency of decryption, video file can be encrypted by an encryption key, thus
Only a decruption key is needed to inquire preset key database, obtains decruption key corresponding with video file mark to view
Encrypted byte in frequency file is decrypted.
It should be noted that the byte between current play position and target play position the case where there are unencryptions, right
Broadcasting can be directly read out in unencryption byte.
In one embodiment of the application, the current of destination player can also be obtained by application programming interface
Play position and target play position.Optionally, destination player can be system plays device.
In one embodiment of the application, encrypted byte is decrypted according to decruption key, obtains played data, is led to
It crosses application programming interface and played data is sent to destination player.
For example, system plays device is sent currently playing by system API when passing through system plays device playing video file
Position and target play position, the video play device of the embodiment of the present application is according to current play position and target play position pair
Video file is parsed, and the data between current play position and target play position are sent to system by system API
Player, so that system plays device be made to play the data between current play position and target play position, system plays later
Device can update current play position and target play position, and by system API send updated current play position and
Target play position, the video play device of the embodiment of the present application is according to updated current play position and target play position
Video file is carried out parsing and is sent to system plays device by system API again to play, to realize the broadcasting of video file.
In the video broadcasting method of the present embodiment, by obtaining video file corresponding with video file mark, view is obtained
The current play position and target play position of frequency file obtain encrypted byte between current play position and target play position
Decruption key, and encrypted byte is decrypted and is played according to decruption key.Hereby it is achieved that not influencing video fluency
In the case where the temporary file after not generating local decryption is played to decryption of video, it is highly-safe.
In order to realize above-described embodiment, the application also proposes a kind of video play device.
Fig. 3 is a kind of structural schematic diagram of video play device provided by the embodiments of the present application.
As shown in figure 3, the device includes: that the first acquisition module 310, second obtains module 320, third obtains module 330
4th obtains module 340 and processing module 350.
Wherein, first module 310 is obtained, for obtaining the video playing request comprising video file mark.
Second obtains module 320, for obtaining video file corresponding with video file mark.
Third obtains module 330, for obtaining the current play position and target play position of video file.
4th obtains module 340, for obtaining the decryption of encrypted byte between current play position and target play position
Key.
Processing module 350, for encrypted byte to be decrypted and played according to decruption key.
Based on the above embodiment, the embodiment of the present application also provides a kind of possible implementation of video play device,
Third obtains module 330, is specifically used for: obtaining current play position and target play position by application programming interface.
Based on the above embodiment, the embodiment of the present application also provides a kind of possible implementation of video play device,
Processing module 350, is specifically used for: being decrypted according to decruption key to encrypted byte, obtains played data；Pass through application program
Played data is sent to destination player by programming interface.
Based on the above embodiment, the embodiment of the present application also provides a kind of possible implementation of video play device,
Fig. 4 is the structural schematic diagram of another kind video play device provided by the embodiment of the present application, on the basis of Fig. 3, the dress
It sets further include: the 5th obtains module 360 and setup module 370.
Wherein, the 5th module 360 is obtained, for obtaining the file size of video file.
Setup module 370, for being arranged according to preset mode one or more in video file according to file size
A target play position.
Based on the above embodiment, the embodiment of the present application also provides a kind of possible implementation of video play device,
Third obtains module 330, is specifically used for: obtaining the video playing jump request comprising current play position mark；According to current
Play position identifies the current play position for determining video file.
Based on the above embodiment, the embodiment of the present application also provides a kind of possible implementation of video play device,
4th obtains module 340, is specifically used for: determining play time according to encrypted byte；Inquire preset and video file mark pair
The cipher key store answered obtains decruption key corresponding with play time.
Based on the above embodiment, the embodiment of the present application also provides a kind of possible implementation of video play device,
4th obtains module 340, is specifically used for: inquiring preset key database, it is close to obtain decryption corresponding with video file mark
Key.
It should be noted that the aforementioned device that the embodiment is also applied for the explanation of embodiment of the method, herein not
It repeats again.
In the video play device of the present embodiment, the video playing request comprising video file mark, acquisition and view are obtained
Frequency file identifies corresponding video file, obtains the current play position and target play position of video file, and acquisition is currently broadcast
The decruption key of encrypted byte between position and target play position is put, and encrypted byte is decrypted simultaneously according to decruption key
It plays.Hereby it is achieved that being played in the case where not influencing video fluency to decryption of video interim after not generating local decryption
File, it is highly-safe.
In order to realize above-described embodiment, the application also proposes a kind of electronic equipment, comprising: memory, processor and storage
On a memory and the computer program that can run on a processor, it when processor executes the program, realizes as preceding method is real
Apply video broadcasting method described in example.
The embodiment of the present application also provides a kind of electronic equipment, and electronic equipment includes device described in aforementioned any embodiment.
Fig. 5 is the structural schematic diagram of the application electronic equipment one embodiment, and method shown in the application Fig. 1-2 may be implemented
The process of embodiment, as shown in figure 5, above-mentioned electronic equipment may include: shell 91, processor 92, memory 93, circuit board 94
With power circuit 95, wherein circuit board 94 is placed in the space interior that shell 91 surrounds, and processor 92 and the setting of memory 93 exist
On circuit board 94；Power circuit 95, for each circuit or the device power supply for above-mentioned electronic equipment；Memory 93 is for storing
Executable program code；Processor 92 is run and executable journey by reading the executable program code stored in memory 93
The corresponding program of sequence code, for executing video generation method described in aforementioned any embodiment.
Processor 92 to the specific implementation procedures of above-mentioned steps and processor 92 by operation executable program code come
The step of further executing may refer to the description of embodiment of the method shown in the application Fig. 1-2, and details are not described herein.
The electronic equipment exists in a variety of forms, including but not limited to:
(1) mobile communication equipment: the characteristics of this kind of equipment is that have mobile communication function, and to provide speech, data
Communication is main target.This Terminal Type includes: smart phone (such as iPhone), multimedia handset, functional mobile phone and low
Hold mobile phone etc..
(2) super mobile personal computer equipment: this kind of equipment belongs to the scope of personal computer, there is calculating and processing function
Can, generally also have mobile Internet access characteristic.This Terminal Type includes: PDA, MID and UMPC equipment etc., such as iPad.
(3) portable entertainment device: this kind of equipment can show and play multimedia content.Such equipment include: audio,
Video player (such as iPod), handheld device, e-book and intelligent toy and portable car-mounted navigation equipment.
(4) server: providing the equipment of the service of calculating, and the composition of server includes that processor, hard disk, memory, system are total
Line etc., server is similar with general computer architecture, but due to needing to provide highly reliable service, in processing energy
Power, stability, reliability, safety, scalability, manageability etc. are more demanding.
(5) other electronic equipments with data interaction function.
In order to realize above-described embodiment, the application also proposes a kind of computer readable storage medium, is stored thereon with calculating
Machine program when the program is executed by processor, realizes the video broadcasting method as described in preceding method embodiment.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the application.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present application, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing custom logic function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the application includes other realization, wherein can not press shown or discussed suitable
Sequence, including according to related function by it is basic simultaneously in the way of or in the opposite order, Lai Zhihang function, this should be by the application
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system, including the system of processor or other can be held from instruction
The instruction fetch of row system, device or equipment and the system executed instruction) it uses, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium ", which can be, any may include, stores, communicates, propagates or pass
Defeated program is for instruction execution system, device or equipment or the dress used in conjunction with these instruction execution systems, device or equipment
It sets.The more specific example (non-exhaustive list) of computer-readable medium include the following: there is the electricity of one or more wirings
Interconnecting piece (electronic device), portable computer diskette box (magnetic device), random access memory (RAM), read-only memory
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium can even is that the paper that can print described program on it or other are suitable
Medium, because can then be edited, be interpreted or when necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each section of the application can be realized with hardware, software, firmware or their combination.Above-mentioned
In embodiment, software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realized.Such as, if realized with hardware in another embodiment, following skill well known in the art can be used
Any one of art or their combination are realized: have for data-signal is realized the logic gates of logic function from
Logic circuit is dissipated, the specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA), scene can compile
Journey gate array (FPGA) etc..
Those skilled in the art are understood that realize all or part of step that above-described embodiment method carries
It suddenly is that relevant hardware can be instructed to complete by program, the program can store in a kind of computer-readable storage medium
In matter, which when being executed, includes the steps that one or a combination set of embodiment of the method.
It, can also be in addition, can integrate in a processing module in each functional unit in each embodiment of the application
It is that each unit physically exists alone, can also be integrated in two or more units in a module.Above-mentioned integrated mould
Block both can take the form of hardware realization, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized and when sold or used as an independent product in the form of software function module, also can store in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only memory, disk or CD etc..Although having been shown and retouching above
Embodiments herein is stated, it is to be understood that above-described embodiment is exemplary, and should not be understood as the limit to the application
System, those skilled in the art can be changed above-described embodiment, modify, replace and become within the scope of application
Type.
Claims (10)
1. a kind of video broadcasting method, which comprises the following steps:
Obtain the video playing request comprising video file mark；
Obtain video file corresponding with video file mark；
Obtain the current play position and target play position of the video file；
The decruption key of encrypted byte between the current play position and the target play position is obtained, and according to the solution
Encrypted byte described in close key pair is decrypted and plays.
2. the method as described in claim 1, which is characterized in that the current play position and mesh for obtaining the video file
Mark play position, comprising:
The current play position and the target play position are obtained by application programming interface.
3. the method as described in claim 1, which is characterized in that described to be carried out according to the decruption key to the encrypted byte
It decrypts and plays, comprising:
The encrypted byte is decrypted according to the decruption key, obtains played data；
The played data is sent to destination player by application programming interface.
4. the method as described in claim 1, which is characterized in that the acquisition current play position and the target play
The decruption key of encrypted byte between position, comprising:
Play time is determined according to the encrypted byte；
Preset cipher key store corresponding with video file mark is inquired, it is close to obtain decryption corresponding with the play time
Key.
5. the method as described in claim 1, which is characterized in that the acquisition current play position and the target play
The decruption key of encrypted byte between position, comprising:
Preset key database is inquired, decruption key corresponding with video file mark is obtained.
6. a kind of video play device, which is characterized in that described device includes:
First obtains module, for obtaining the video playing request comprising video file mark；
Second obtains module, for obtaining video file corresponding with video file mark；
Third obtains module, for obtaining the current play position and target play position of the video file；
4th obtains module, for obtaining the decryption of encrypted byte between the current play position and the target play position
Key；
Processing module, for the encrypted byte to be decrypted and played according to the decruption key.
7. device as claimed in claim 6, which is characterized in that the third obtains module, is specifically used for:
The current play position and the target play position are obtained by application programming interface.
8. device as claimed in claim 6, which is characterized in that the processing module is specifically used for:
The encrypted byte is decrypted according to the decruption key, obtains played data；
The played data is sent to destination player by application programming interface.
9. a kind of electronic equipment characterized by comprising memory, processor and storage are on a memory and can be in processor
The computer program of upper operation when the processor executes described program, realizes such as video as claimed in any one of claims 1 to 5
Playback method.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is by processor
Such as video broadcasting method as claimed in any one of claims 1 to 5 is realized when execution.
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| CN201910253180.7A CN109862424B (en) | 2019-03-29 | 2019-03-29 | Video playing method and device and electronic equipment |
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| CN201910253180.7A CN109862424B (en) | 2019-03-29 | 2019-03-29 | Video playing method and device and electronic equipment |
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| CN111050213A (en) * | 2020-01-17 | 2020-04-21 | 北京达佳互联信息技术有限公司 | Video playing method and device, electronic equipment and storage medium |
| CN112887784A (en) * | 2021-01-25 | 2021-06-01 | 东方网力科技股份有限公司 | Method, device, equipment and system for playing encrypted video |
| CN113727191A (en) * | 2021-08-30 | 2021-11-30 | 山谷网安科技股份有限公司 | Portable encrypted mobile training system and device and encrypted training method |
| CN115623282A (en) * | 2022-12-02 | 2023-01-17 | 杭州海康威视数字技术股份有限公司 | Fixed-point playing method and device of encrypted video, electronic equipment and storage medium |
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