CN108449600A - The transmission method and device of cinematic data - Google Patents
The transmission method and device of cinematic data Download PDFInfo
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- CN108449600A CN108449600A CN201810222736.1A CN201810222736A CN108449600A CN 108449600 A CN108449600 A CN 108449600A CN 201810222736 A CN201810222736 A CN 201810222736A CN 108449600 A CN108449600 A CN 108449600A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 270
- 238000000034 method Methods 0.000 title claims abstract description 58
- 238000000605 extraction Methods 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 8
- 238000004590 computer program Methods 0.000 claims description 6
- 241001269238 Data Species 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 abstract description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
- H04N19/172—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
- H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—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
- H04N21/4408—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 encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
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- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The present invention provides the transmission method of cinematic data and devices, are related to technical field of data transmission, wherein the transmission method of cinematic data includes：Cinematic data is denoted as key frame and normal frames by data sending terminal respectively according to the size of resolution ratio, and different codings, encryption and transmission etc. are carried out to it, and, the period of transmission is different, the tail portion of first period and the head of the second period overlap, data receiver is enable to get key frame and/or normal frames by sending different requests, and it is decrypted with corresponding key, packaging respectively, encryption and the transmission etc. to cinematic data are realized, to ensure that cinematic data in the transmission complete and effective.
Description
Technical field
The present invention relates to the transmission methods and device of technical field of data transmission more particularly to cinematic data.
Background technology
With the development of technology and the improvement of people ’ s living standards, various amusement and recreation activities also more and more appear in
In the work and life of people.For example, traditional handicraft (for example, weaving, embroidery etc.) has all been changed to mechanical automation
Production；Original manual operation is changeable to change computer control into；Original mobile phone for being only used for call has all been transformed into intelligence
Mobile phone (can make a phone call send short messages etc. can also surf the Internet)；Original black-and-white television all has changed into color TV, or even can pass through
Touch screen is controlled and is shown.
In short, huge variation has occurred in the production and life of people.The especially development of motion picture technique can only be shown originally
Show black-and-white image, and can only be shown on the screen of fixed size.And with the development of various technologies, film can not only form coloured silk
Color image, additionally it is possible to be shown on various screens (for example, ball curtain, water curtain, giant screens etc.), be brought to the sense organ of people
Completely new experience.
But increasing as film plays form, to the transmission of cinematic data, more stringent requirements are proposed.Current place
Mostly it is to be exactly by cinematic data progress uniform transmission and projection, the consequence done so after the shooting for completing film during reason
When film will be shown on different types of screen, it is difficult to exactly match, one is even will appear in transmission process
The phenomenon that a little key frame loss, and then cinematic data is caused not show normally.
To sum up, it is difficult to keep complete and effective problem in transmission process about cinematic data at present, there is no effective solution
Certainly method.
Invention content
In view of this, the transmission method and device for being designed to provide cinematic data of the embodiment of the present invention, pass through by
Cinematic data is separately encoded and is transmitted, and then improves completeness and efficiency of the cinematic data in transmission process.
In a first aspect, an embodiment of the present invention provides the transmission methods of cinematic data, including：
Data sending terminal samples cinematic data to be transmitted according to preset time interval, obtains multiple transmission numbers
According to frame；
The resolution ratio of multiple transmitting data frames is compared data sending terminal one by one with preset screen resolution；
When the resolution ratio of transmitting data frame is more than or equal to preset screen resolution, data sending terminal is by resolution ratio
Half is reduced, and extracts transmitting data frame and is denoted as key frame, and key frame is stored in local；
When the resolution ratio of transmitting data frame is less than preset screen resolution, resolution ratio is reduced by one by data sending terminal
Half, and transmitting data frame is denoted as normal frames, and normal frames are stored in local；
Data sending terminal is that key frame and normal frames establish playing time table according to preset time interval；
Data sending terminal encodes key frame using VC-1, obtains first coding data；
Data sending terminal, using H.263 encoding, obtains the second coded data to normal frames；
The first request channel, the second request channel and data transmission are established between data sending terminal and data receiver respectively
Channel；
Data receiver sends out key frame to data sending terminal by the first request channel and obtains request and crucial key；
Data sending terminal receive key frame obtain request after create the first dynamic password, and, by the first dynamic password,
Crucial key and playing time table are overlapped, and obtain first kind encryption information；
Data sending terminal is encrypted first coding data with first kind encryption information, and the first kind is encrypted and is believed
Breath, which is added to as the first packet header in first coding data, forms the first transmission packet；
Data receiver sends out normal frames to data sending terminal by the second request channel and obtains request and common key；
Data sending terminal receive normal frames obtain request after create the second dynamic password, and, by the second dynamic password,
Common key and playing time table are overlapped, and obtain the second class encryption information；
Data sending terminal is encrypted with second the second coded data of class encryption information pair, and the second class is encrypted and is believed
Breath, which is added to as the second packet header in the second coded data, forms the second transmission packet；
Data receiver sends out key frame transmission request by the first request channel to data sending terminal；
Data receiver sends out normal frames transmission request by the second request channel to data sending terminal；
Data sending terminal is transmitted in the first period by the first transmission packet of data transmission channel pair, and data are sent
End is transmitted in the second period by the second transmission packet of data transmission channel pair, wherein the tail portion of the first period and the
The head of two periods overlaps.
With reference to first aspect, an embodiment of the present invention provides the first possible embodiments of first aspect, wherein number
Cinematic data to be transmitted is sampled according to preset time interval according to transmitting terminal, obtains multiple transmitting data frames, including：
Data sending terminal obtains cinematic data to be transmitted, wherein cinematic data to be transmitted is continuous；
Data sending terminal obtains the broadcasting frequency of data receiver, and, the time is subjected to sampling acquisition according to broadcasting frequency
Preset time interval；
Data sending terminal samples cinematic data to be transmitted according to preset time interval, obtains multiple transmission numbers
According to frame, wherein transmitting data frame is discrete.
The possible embodiment of with reference to first aspect the first, an embodiment of the present invention provides second of first aspect
Possible embodiment, wherein method further includes：
Data sending terminal pair carries out even parity check with the first packet header apart from nearest key frame, obtains the second secret value；
Data sending terminal pair carries out even parity check with the second packet header apart from nearest normal frames, obtains the first secret value；
First kind encryption information and the first secret value are weighted operation by data sending terminal；
Second class encryption information and the second secret value are weighted operation by data sending terminal.
Second of possible embodiment with reference to first aspect, an embodiment of the present invention provides the third of first aspect
Possible embodiment, wherein data sending terminal is carried out in the first period by the first transmission packet of data transmission channel pair
Transmission, data sending terminal are transmitted in the second period by the second transmission packet of data transmission channel pair, wherein when first
The tail portion and the head of the second period of section overlap, including：
Data sending terminal divides time shaft according to the preset transmission period, obtains multiple transmission cycles；
Transmission cycle is divided into the first time period and the second time period by data sending terminal, wherein in current transmission period
The tail portion of one period and the head of the second period overlap, the head of the first period in current transmission period and upper transmission week
The tail portion of the second interim period overlaps, and the in the tail portion and next transmission cycle of the second period in current transmission period
The head of one period overlaps；
First period of the data sending terminal in multiple transmission cycles passes through the first transmission packet of data transmission channel pair
It is transmitted, and, the second period in transmission cycle is transmitted by the second transmission packet of data transmission channel pair.
The third possible embodiment with reference to first aspect, an embodiment of the present invention provides the 4th kind of first aspect
Possible embodiment, wherein method further includes：
Data sending terminal is after receiving the first decoding request that data receiver is sent out by the first request channel, to number
The first solution confidential information is sent according to receiving terminal, wherein the first solution confidential information is corresponding with first kind encryption information；
Data sending terminal is after receiving the second decoding request that data receiver is sent out by the second request channel, to number
The second solution confidential information is sent according to receiving terminal, wherein the second solution confidential information is corresponding with the second class encryption information；
After data receiver obtains decryption with first solution the first transmission packet of confidential information pair the first decryption oprerations of progress
The first cinematic data；
After data receiver obtains decryption with second solution the second transmission packet of confidential information pair the second decryption oprerations of progress
The second cinematic data；
The resolution ratio of the first cinematic data after decryption is increased into half, by the resolution ratio of the second cinematic data after decryption
Half is increased, and, the first cinematic data and the second cinematic data after resolution ratio is increased are integrated, and complete film is obtained
Data.
The third possible embodiment with reference to first aspect, an embodiment of the present invention provides the 5th kind of first aspect
Possible embodiment, wherein method further includes：
When data transmission channel blocks, the first transmission packet and second that data receiver detection receives pass
Whether transmission of data packet there is packet loss；
When testing result be the first transmission packet there is packet loss when, data receiver occurs from packet loss it is upper one transmit
The first transmission packet corresponding with the packet loss moment is transferred in period；
When testing result be the second transmission packet there is packet loss when, data receiver occurs from packet loss it is upper one transmit
The second transmission packet corresponding with the packet loss moment is transferred in period.
The third possible embodiment with reference to first aspect, an embodiment of the present invention provides the 6th kind of first aspect
Possible embodiment, wherein include the location information of data receiver in crucial key and common key.
Second aspect, an embodiment of the present invention provides the transmitting devices of cinematic data, including：
Sampling module samples cinematic data to be transmitted according to preset time interval for data sending terminal,
Obtain multiple transmitting data frames；
Resolution ratio comparing module differentiates the resolution ratio of multiple transmitting data frames and preset picture for data sending terminal
Rate is compared one by one；
Key-frame extraction module is more than or equal to preset screen resolution for the resolution ratio when transmitting data frame
When, resolution ratio is reduced half by data sending terminal, and is extracted transmitting data frame and be denoted as key frame, and key frame is stored in this
Ground；
Common frame extraction module, for when the resolution ratio of transmitting data frame is less than preset screen resolution, data to be sent out
Resolution ratio is reduced half by sending end, and transmitting data frame is denoted as normal frames, and normal frames are stored in local；
Playing time table establishes module, is built for key frame and normal frames according to preset time interval for data sending terminal
Vertical playing time table；
First coding module is encoded key frame using VC-1 for data sending terminal, obtains first coding data；
Second coding module obtains the second coded number to normal frames for data sending terminal using H.263 encoding
According to；
Path setup module, for establishing the first request channel, second between data sending terminal and data receiver respectively
Request channel and data transmission channel；
First request module sends out key frame to data sending terminal by the first request channel for data receiver and obtains
Request and crucial key；
First password acquisition module, for data sending terminal, the first dynamic of establishment is close after receiving key frame and obtaining request
Code, and, the first dynamic password, crucial key and playing time table are overlapped, first kind encryption information is obtained；
Place is encrypted to first coding data with first kind encryption information for data sending terminal in first encrypting module
Reason, first kind encryption information is added to as the first packet header in first coding data and forms the first transmission packet；
Second request module sends out normal frames to data sending terminal by the second request channel for data receiver and obtains
Request and common key；
Second password acquisition module, for data sending terminal, the second dynamic of establishment is close after receiving normal frames and obtaining request
Code, and, the second dynamic password, common key and playing time table are overlapped, the second class encryption information is obtained；
Place is encrypted with second the second coded data of class encryption information pair for data sending terminal in second encrypting module
Reason, the second class encryption information is added to as the second packet header in the second coded data and forms the second transmission packet；
First transmission request module, key frame is sent out for data receiver by the first request channel to data sending terminal
Transmission request；
Second transmission request module, normal frames are sent out for data receiver by the second request channel to data sending terminal
Transmission request；
Transmission module is carried out in the first period by the first transmission packet of data transmission channel pair for data sending terminal
Transmission, data sending terminal is transmitted in the second period by the second transmission packet of data transmission channel pair, wherein for the
The tail portion of one period and for the second period head overlap.
The third aspect, the embodiment of the present invention also provide a kind of terminal, including memory and processor, and memory is for depositing
Storage supports processor to execute the program of the transmission method for the cinematic data that above-mentioned aspect provides, and processor is configurable for executing
The program stored in memory.
Fourth aspect, the embodiment of the present invention also provide a kind of computer readable storage medium, computer readable storage medium
On be stored with computer program, when computer program is run by processor execute any of the above-described method the step of.
The transmission method and device of cinematic data provided in an embodiment of the present invention, wherein the transmission method of the cinematic data
Including：Data sending terminal samples cinematic data to be transmitted according to preset time interval, obtains multiple transmission datas
The resolution ratio of multiple transmitting data frames is compared one by one with preset screen resolution for frame, data sending terminal, when transmission number
When being more than or equal to preset screen resolution according to the resolution ratio of frame, resolution ratio is reduced half by data sending terminal, and is extracted
Transmitting data frame is denoted as key frame, and key frame is stored in local, when the resolution ratio of transmitting data frame is less than preset picture
When resolution ratio, resolution ratio is reduced half by data sending terminal, and transmitting data frame is denoted as normal frames, and normal frames are stored in
Local, data sending terminal is that key frame and normal frames establish playing time table, data sending terminal pair according to preset time interval
Key frame is encoded using VC-1, obtains first coding data, and data sending terminal uses normal frames and H.263 encodes,
The second coded data is obtained, establishes the first request channel, the second request channel between data sending terminal and data receiver respectively
And data transmission channel, data receiver send out key frame to data sending terminal by the first request channel and obtain request and key
Key, data sending terminal create the first dynamic password after receiving key frame and obtaining request, and, by the first dynamic password, close
Key-encrypting key and playing time table are overlapped, and obtain first kind encryption information, and data sending terminal uses first kind encryption information pair
First coding data is encrypted, and first kind encryption information is added to as the first packet header in first coding data and is formed
First transmission packet, data receiver send out normal frames to data sending terminal by the second request channel and obtain request and common
Key, data sending terminal create the second dynamic password after receiving normal frames and obtaining request, also, by the second dynamic password,
Common key and playing time table are overlapped, and obtain the second class encryption information, and data sending terminal uses the second class encryption information
Second coded data is encrypted, is added to group in the second coded data using the second class encryption information as the second packet header
At the second transmission packet, data receiver sends out key frame transmission request, number by the first request channel to data sending terminal
Normal frames transmission request is sent out to data sending terminal by the second request channel according to receiving terminal, data sending terminal is logical in the first period
It crosses the first transmission packet of data transmission channel pair to be transmitted, data sending terminal passes through data transmission channel pair in the second period
Second transmission packet is transmitted, wherein the tail portion of the first period and the head of the second period overlap, by by cinematic data
It is separately encoded and is transmitted according to the difference of resolution ratio, realize effective transmission to the cinematic data after packaging, meanwhile,
It ensure that the integrality of cinematic data.
Other features and advantages of the present invention will illustrate in the following description, and partly become aobvious from specification
And be clear to, or understand through the implementation of the invention.The purpose of the present invention and other advantages specification, claims and
Specifically noted structure is realized and is obtained in attached drawing.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 shows the first pass figure of the transmission method for the cinematic data that the embodiment of the present invention is provided；
The second flow chart of the transmission method of the cinematic data provided Fig. 2 shows the embodiment of the present invention；
Fig. 3 shows the third flow chart of the transmission method for the cinematic data that the embodiment of the present invention is provided；
Fig. 4 shows the structure connection figure of the transmitting device for the cinematic data that the embodiment of the present invention is provided.
Icon：1- sampling modules；2- resolution ratio comparing modules；3- key-frame extraction modules；The common frame extraction modules of 4-；5-
Playing time table establishes module；The first coding modules of 6-；The second coding modules of 7-；8- path setup modules；9- first asks modulus
Block；10- first password acquisition modules；The first encrypting modules of 11-；The second request modules of 12-；13- the second password acquisition modules；
The second encrypting modules of 14-；15- first transmits request module；16- second transmits request module；17- transmission modules.
Specific implementation mode
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause
This, the detailed description of the embodiment of the present invention to providing in the accompanying drawings is not intended to limit claimed invention below
Range, but it is merely representative of the selected embodiment of the present invention.Based on the embodiment of the present invention, those skilled in the art are not doing
The every other embodiment obtained under the premise of going out creative work, shall fall within the protection scope of the present invention.
Currently, the broadcasting form of film is varied, for example, ball curtain, water curtain, giant screens etc..Various film plays
Also to the transmission of cinematic data, more stringent requirements are proposed for form.Mostly it is that will clap in the transmission process of existing cinematic data
The cinematic data for taking the photograph completion carries out uniform transmission, and still, cinematic data inevitably will appear in transmission process due to various reasons
Packet loss phenomenon, in this way, when film will play out, especially cinematic data will be shown on different types of screen
When, it is difficult to ensure the integrality of cinematic data, it is more difficult to accomplish that cinematic data and different screen exactly match, even transmit
It will appear the phenomenon that cinematic data is stolen by other websites in the process, and then cinematic data caused not show normally.
Based on this, an embodiment of the present invention provides the transmission method of cinematic data and devices, are carried out below by embodiment
Description.
Embodiment 1
Referring to Fig. 1, Fig. 2 and Fig. 3, the transmission method for the cinematic data that the present embodiment proposes specifically includes following steps：
Step S101：Data sending terminal samples cinematic data to be transmitted according to preset time interval, obtains
Multiple transmitting data frames, in implementation process, general cinematic data to be transmitted is all bigger, and specific length needs basis
The shooting duration of video of film is related with resolution ratio for shooting.Cinematic data to be transmitted is divided into multiple transmitting data frames, be for
Adapt to the needs of transmission bandwidth.
Step S102：Data sending terminal carries out the resolution ratio of multiple transmitting data frames with preset screen resolution one by one
Compare, in the present embodiment, in order to which multiple transmitting data frames are carried out classification transmission, by the resolution ratio of multiple transmitting data frames with
Preset screen resolution is compared one by one.
Step S103：When the resolution ratio of transmitting data frame is more than or equal to preset screen resolution, data are sent
Resolution ratio is reduced half by end, and is extracted transmitting data frame and be denoted as key frame, and key frame is stored in local, i.e., in this implementation
In example, the resolution ratio of key frame is larger, accordingly it includes image content it is also relatively abundant.It needs exist for illustrating
It is that preset screen resolution needs are flexibly set according to specific usage scenario, it is extracted being transmitted data frame
Before, resolution ratio is reduced into half, can be that data transmission reduces pressure, to accelerate the transmission speed of key frame.
Step S104：When the resolution ratio of transmitting data frame is less than preset screen resolution, data sending terminal will be differentiated
Rate reduces half, and transmitting data frame is denoted as normal frames, and normal frames are stored in local, i.e., in the present embodiment, will divide
The smaller transmitting data frame of resolution is denoted as normal frames.Before being transmitted data frame extraction, resolution ratio is reduced into half, it can
Reduce pressure for data transmission, to accelerate the transmission speed of normal frames.
Step S105：Data sending terminal is that key frame and normal frames establish playing time table according to preset time interval,
Since, entire cinematic data is divided into key frame and normal frames, in order to make key frame and normal frames keep in touch, and finally open up
Now complete image frame is in the present embodiment that key frame and normal frames establish playing time according to preset time interval
Table is contacted key frame and normal frames by playing time table.
Step S106：Data sending terminal encodes key frame using VC-1, obtains first coding data, needs exist for
It illustrates, in the present embodiment, key frame is encoded and can be effectively compressed with VC-1, to save
Transmission space.The basic unit of VC-l transformation does not use fixed matrix, but uses adaptive transformation, share 8 × 8,8 ×
4,4 × 8,4 × 4 four kinds of sizes, it is easy to accomplish.VC-1 is only 2 kinds in macro block division：16 × 16 and 8 × 8.Although VC-1's
Block size significantly reduces calculation amount without H.264 complete.Also, the inter prediction reference frame of VC-l is only by preceding I frames
Reconstructed frame is formed, to reduce buffer memory capacity.
Step S107：Data sending terminal, using H.263 encoding, obtains the second coded data, needs here to normal frames
It to be illustrated, H.263 be by the Low Bit-Rate Video Coding standard of the ITU-T video conferences formulated, movement H.263
Compensation uses half-pixel accuracy, H.263 comprising four negotiable options to improve performance, H.263 uses unconfined movement
H.263, vector and the arithmetic coding based on grammer, support 5 kinds of resolution ratio, i.e., in addition to the QCIF that is supported in supporting H.261 and
Outside CIF, also supports SQCIF, 4CIF and 16CIF, enable adaptation to the transmission demand of a variety of resolution data frames.
Step S108：The first request channel, the second request channel are established between data sending terminal and data receiver respectively
And data transmission channel, establish the first request channel, respectively in the present embodiment, between data sending terminal and data receiver
Two request channels and data transmission channel carry out channel more smooth when classification is for transmission data.
Step S109：Data receiver sends out key frame to data sending terminal by the first request channel and obtains request and pass
Key-encrypting key needs to illustrate herein, and crucial key includes the location information of data receiver, is wrapped in crucial key
Include the destination address of transmission.It illustrates the condition sent to be simultaneously data receiver sends out key frame acquisition to data sending terminal to ask
The crucial key of summation.
Step S110：Data sending terminal creates the first dynamic password after receiving key frame and obtaining request, and, by first
Dynamic password, crucial key and playing time table are overlapped, and obtain first kind encryption information, here, the first dynamic password
Establishment can flexibly be set according to usage scenario.In order to which key frame and normal frames are associated, by the first dynamic password,
Crucial key and playing time table are overlapped, and are overlapped with binding the first dynamic password, crucial key and playing time table,
Obtain first kind encryption information.
Step S111：Data sending terminal is encrypted first coding data with first kind encryption information, by
A kind of encryption information, which is added to as the first packet header in first coding data, forms the first transmission packet, first kind encryption information
Placement location be packet header, the transmission of first coding data is not on the one hand influenced, on the other hand to the solution of destination address and password
It is close related.
Step S112：Data receiver by the second request channel to data sending terminal send out normal frames obtain request and it is general
Logical key, needs to illustrate herein, common key includes the location information of data receiver.Similarly, common close
It also include destination address in key.
Step S113：Data sending terminal creates the second dynamic password after receiving normal frames and obtaining request, and, by second
Dynamic password, common key and playing time table are overlapped, and obtain the second class encryption information, similarly, the second dynamic password
Establishment can flexibly be set according to usage scenario.In order to which key frame and normal frames are associated, by the second dynamic password,
Crucial key and playing time table are overlapped, and are overlapped with binding the second dynamic password, crucial key and playing time table,
Obtain the second class encryption information.
Step S114：Data sending terminal is encrypted with second the second coded data of class encryption information pair, by
Two class encryption information, which are added to as the second packet header in the second coded data, forms the second transmission packet, similarly, by the second class
The placement location of encryption information is packet header, does not on the one hand influence the transmission of the second coded data, on the other hand to destination address and
The decryption of password is related.
Step S115：Data receiver sends out key frame transmission request by the first request channel to data sending terminal,
In the step, it is to receive the key frame transmission that data receiver is sent out to ask to show data sending terminal and send the starting point of key frame
It asks.
Step S116：Data receiver sends out normal frames transmission request by the second request channel to data sending terminal, together
Reason, in this step, the starting point for showing data sending terminal transmission data are to receive the normal frames that data receiver is sent out to pass
Defeated request.
Step S117：Data sending terminal is passed in the first period by the first transmission packet of data transmission channel pair
Defeated, data sending terminal is transmitted in the second period by the second transmission packet of data transmission channel pair, wherein the first period
Tail portion and the head of the second period overlap.In this step, the first transmission packet and the second transmission packet are illustrated
Transmission time sequence is interval transmission, specifically, being according to the first period, the second period, the first period, the second period, the first period
Deng sequence successively carry out.
Above-mentioned steps are further elaborated below, data sending terminal by cinematic data to be transmitted according to it is preset when
Between be spaced and sampled, obtain multiple transmitting data frames, including：
(1) data sending terminal obtains cinematic data to be transmitted, wherein cinematic data to be transmitted is continuous, here
It needs to illustrate, the cinematic data transmitted in the present invention is complete cinematic data, continuous in time, is mould
Quasi- cinematic data.
(2) data sending terminal obtains the broadcasting frequency of data receiver, and, the time is subjected to sampling according to broadcasting frequency and is obtained
It obtains preset time interval and the sampling interval is determined by broadcasting frequency in this step.
(3) data sending terminal samples cinematic data to be transmitted according to preset time interval, obtains multiple biographies
Transmission of data frame, wherein transmitting data frame is discrete.In this step, by according to preset time interval to cinematic data
It is sampled, to obtain multiple transmitting data frames.
In addition, the transmission method of cinematic data further includes：
(1) data sending terminal pair carries out even parity check with the first packet header apart from nearest key frame, obtains the second secret value, needs
It to be illustrated, even parity check is when the number of " 1 " in real data is even number, this check bit is exactly " 0 ", no
Then this check bit is exactly " 1 ", ensures that transmission data meet the requirement of even parity check in this way.Data are received in recipient
When, by the number of " 1 " in the requirement detection data according to even parity check, if it is even number " 1 ", indicate that transmission is correct, otherwise table
Show transmission mistake.Secret value is obtained by even parity check, the safety in transmission process to key frame can be further strengthened.
(2) data sending terminal pair carries out even parity check with the second packet header apart from nearest normal frames, obtains the first secret value, together
On, which is not described herein again.
(3) first kind encryption information and the first secret value are weighted operation by data sending terminal, are in order to being transmitted across
Key frame in journey carries out cryptographic operation again.
(4) the second class encryption information and the second secret value are weighted operation by data sending terminal.Ibid, no longer superfluous here
It states.
Above-mentioned steps data sending terminal is transmitted in the first period by the first transmission packet of data transmission channel pair,
Data sending terminal is transmitted in the second period by the second transmission packet of data transmission channel pair, wherein the first period
Tail portion and the head of the second period overlap, and specifically include：
(1) data sending terminal divides time shaft according to the preset transmission period, obtains multiple transmission cycles, by
In the channel in the embodiment of the present invention has been split into three parts：First request channel, the second request channel and data transmission
Channel, also, cinematic data to be transmitted is divided into key frame and normal frames, therefore, in order to ensure the validity of transmission, needs
Time shaft is divided according to the preset transmission period.In the present embodiment, the transmission period is divided, is obtained multiple
Transmission cycle can be transmitted according to set transmission cycle.
(2) transmission cycle is divided into the first time period and the second time period by data sending terminal, wherein in current transmission period
The tail portion of first period and the head of the second period overlap, the head of the first period in current transmission period and a upper transmission
The tail portion of the second period in period overlaps, in the tail portion and next transmission cycle of the second period in current transmission period
The head of first period overlaps, and here, specifically illustrates the division of the transmission period in transmission cycle to key frame and normal frames,
And then make the transmission of key frame and normal frames definitely.
(3) first period of the data sending terminal in multiple transmission cycles passes through the first transmission data of data transmission channel pair
Packet is transmitted, also, the second period in transmission cycle is passed by the second transmission packet of data transmission channel pair
It is defeated.It was the first period to define to the time that the first transmission packet where key frame is transmitted；To where normal frames
Time for being transmitted of the second transmission packet be the second period.
In addition, the transmission method of cinematic data further includes：
(1) data sending terminal is after receiving the first decoding request that data receiver is sent out by the first request channel,
To data receiver send first solution confidential information, wherein first solution confidential information be it is corresponding with first kind encryption information, in order to
Data receiver receives key frame, needs that the first transmission packet received is decrypted, firstly, it is necessary to be
Confidential information is solved, here, the first solution confidential information is corresponding with first kind encryption information.
(2) data sending terminal is after receiving the second decoding request that data receiver is sent out by the second request channel,
To data receiver send second solution confidential information, wherein second solution confidential information be it is corresponding with the second class encryption information, ibid,
It is not discussed here.
(3) data receiver is decrypted with first solution the first transmission packet of confidential information pair the first decryption oprerations of progress
The first cinematic data afterwards, i.e., be decrypted operation to the first transmission packet.
(4) data receiver is decrypted with second solution the second transmission packet of confidential information pair the second decryption oprerations of progress
The second cinematic data afterwards, i.e., be decrypted operation to the second transmission packet.
(5) resolution ratio of the first cinematic data after decryption is increased into half, by point of the second cinematic data after decryption
Resolution increases half, and, the first cinematic data and the second cinematic data after resolution ratio is increased are integrated, and are obtained complete
Cinematic data.The first cinematic data obtained after decryption and the second cinematic data are integrated, i.e., according to the above-mentioned biography referred to
Defeated period and transmission period are integrated, and complete cinematic data is obtained.Due to being differentiated to it before data frame is transmitted
Rate has carried out halving processing, and the first transmission packet and the second transmission packet are received in data receiver, and to its into
It has gone after decryption oprerations, the resolution ratio of the first cinematic data and the second cinematic data is increased into half, in order to carry out shadow
Depending on the broadcasting of data.
Further, since network transmission environment is complicated and changeable, showing for loss of data is susceptible to when especially network is poor
As therefore, the transmission method of cinematic data further includes：
(1) when data transmission channel blocks, data receiver the first transmission packet for receiving of detection and the
Whether two transmission packets there is packet loss, i.e., detect the first transmission packet and the second transmission data by data receiver first
Whether packet there is packet loss.
(2) when testing result is that the first transmission packet packet loss occurs, occur from packet loss upper one of data receiver
The first transmission packet corresponding with the packet loss moment is transferred in transmission cycle, it, will be corresponding in order to make up the packet loss of key frame
The data packet of corresponding period in a upper transmission cycle for transmission cycle copies to current location, with the data packet to loss into
Row makes up, and then ensures the integrality that cinematic data plays.
(3) when testing result is that the second transmission packet packet loss occurs, occur from packet loss upper one of data receiver
The second transmission packet corresponding with the packet loss moment is transferred in transmission cycle.It, will be corresponding in order to make up the packet loss of normal frames
The data packet of corresponding period in a upper transmission cycle for transmission cycle copies to current location, with the data packet to loss into
Row makes up, and then ensures the integrality that cinematic data plays.
In conclusion the transmission method of cinematic data provided in this embodiment includes：Data sending terminal is by electricity to be transmitted
Shadow data are sampled according to preset time interval, obtain multiple transmitting data frames, and data sending terminal is by multiple transmission datas
The resolution ratio of frame is compared one by one with preset screen resolution, is preset when the resolution ratio of transmitting data frame is more than or equal to
Screen resolution when, transmitting data frame is denoted as key frame by data sending terminal, and key frame is stored in local, when transmission number
When being less than preset screen resolution according to the resolution ratio of frame, transmitting data frame is denoted as normal frames by data sending terminal, and will be common
Frame is stored in local, and data sending terminal is that key frame and normal frames establish playing time table, data according to preset time interval
Transmitting terminal encodes key frame using VC-1, obtains first coding data, data sending terminal to normal frames using H.263 into
Row coding, obtains the second coded data, establishes the first request channel between data sending terminal and data receiver respectively, second asks
Channel and data transmission channel, data receiver is asked to send out key frame to data sending terminal by the first request channel and obtain request
With crucial key, data sending terminal creates the first dynamic password after receiving key frame and obtaining request, and, the first dynamic is close
Code, crucial key and playing time table are overlapped, and obtain first kind encryption information, data sending terminal is with first kind encryption letter
First coding data is encrypted in breath, is added to first kind encryption information as the first packet header in first coding data
Form the first transmission packet, data receiver by the second request channel to data sending terminal send out normal frames obtain request and
Common key, data sending terminal create the second dynamic password after receiving normal frames and obtaining request, and, the second dynamic is close
Code, common key and playing time table are overlapped, and obtain the second class encryption information, data sending terminal is with the second class encryption letter
The second coded data is encrypted in breath, is added in the second coded data using the second class encryption information as the second packet header
The second transmission packet is formed, data receiver sends out key frame transmission request by the first request channel to data sending terminal,
Data receiver sends out normal frames transmission request by the second request channel to data sending terminal, and data sending terminal is in the first period
It is transmitted by the first transmission packet of data transmission channel pair, data sending terminal passes through data transmission channel in the second period
Second transmission packet is transmitted, wherein the tail portion of the first period and the head of the second period overlap.Pass through above-mentioned processing
Process realizes cinematic data being divided into two classes, is passed after the coded treatment of progress different-format and encryption respectively
It is defeated, and then ensure that completeness and efficiency of the cinematic data in transmission process.
Embodiment 2
Referring to Fig. 4, the transmitting device for present embodiments providing cinematic data includes：
Sampling module 1 samples cinematic data to be transmitted according to preset time interval for data sending terminal,
Obtain multiple transmitting data frames；
Resolution ratio comparing module 2 differentiates the resolution ratio of multiple transmitting data frames and preset picture for data sending terminal
Rate is compared one by one；
Key-frame extraction module 3 is used to be more than or equal to preset screen resolution when the resolution ratio of transmitting data frame
When, resolution ratio is reduced half by data sending terminal, and is extracted transmitting data frame and be denoted as key frame, and key frame is stored in this
Ground；
Common frame extraction module 4 is used for when the resolution ratio of transmitting data frame is less than preset screen resolution, data hair
Resolution ratio is reduced half by sending end, and transmitting data frame is denoted as normal frames, and normal frames are stored in local；
It is that key frame and normal frames are built according to preset time interval that playing time table, which establishes module 5 for data sending terminal,
Vertical playing time table；
First coding module 6 is encoded key frame using VC-1 for data sending terminal, obtains first coding data；
Second coding module 7 uses normal frames for data sending terminal and H.263 encodes, and obtains the second coded number
According to；
Path setup module 8 for establishing the first request channel, second respectively between data sending terminal and data receiver
Request channel and data transmission channel；
First request module 9 sends out key frame to data sending terminal by the first request channel for data receiver and obtains
Request and crucial key；
First password acquisition module 10 creates the first dynamic for data sending terminal after receiving key frame and obtaining request
Password, and, the first dynamic password, crucial key and playing time table are overlapped, first kind encryption information is obtained；
First encrypting module 11 is encrypted first coding data with first kind encryption information for data sending terminal
Processing, first kind encryption information is added to as the first packet header in first coding data and forms the first transmission packet；
Second request module 12 sends out normal frames to data sending terminal by the second request channel for data receiver and obtains
Take request and common key；
Second password acquisition module 13 creates the second dynamic for data sending terminal after receiving normal frames and obtaining request
Password, and, the second dynamic password, common key and playing time table are overlapped, the second class encryption information is obtained；
Second encrypting module 14 is encrypted for data sending terminal with second the second coded data of class encryption information pair
Processing, the second class encryption information is added to as the second packet header in the second coded data and forms the second transmission packet；
First transmission request module 15 sends out key by the first request channel for data receiver to data sending terminal
Frame transmission request；
Second transmission request module 16 is sent out commonly by the second request channel to data sending terminal for data receiver
Frame transmission request；
Transmission module 17 for data sending terminal the first period by the first transmission packet of data transmission channel pair into
Row transmission, data sending terminal are transmitted in the second period by the second transmission packet of data transmission channel pair, wherein first
The tail portion of period and the head of the second period overlap.
The transmitting device of cinematic data provided in an embodiment of the present invention, the transmission of the cinematic data provided with above-described embodiment
Method technical characteristic having the same reaches identical technique effect so can also solve identical technical problem.
The embodiment of the present invention additionally provides a kind of terminal, including memory and processor, and memory is supported for storing
Processor executes the program of above-described embodiment method, and processor is configurable for executing the program stored in memory.
The embodiment of the present invention also provides a kind of computer readable storage medium, and meter is stored on computer readable storage medium
Calculation machine program, when computer program is run by processor the step of the method for execution any of the above-described.
It should be noted that each embodiment in this specification is described in a progressive manner, each embodiment weight
Point explanation is all difference from other examples, and the same or similar parts between the embodiments can be referred to each other.
The technique effect of the transmission method and device for the cinematic data that the embodiment of the present invention is provided, realization principle and generation and aforementioned
Embodiment of the method is identical, and to briefly describe, device embodiment part does not refer to place, can refer to corresponding in preceding method embodiment
Content.
In several embodiments provided herein, it should be understood that disclosed device and method can also pass through
Other modes are realized.The apparatus embodiments described above are merely exemplary, for example, the flow chart in attached drawing and block diagram
Show the device of multiple embodiments according to the present invention, the architectural framework in the cards of method and computer program product,
Function and operation.In this regard, each box in flowchart or block diagram can represent the one of a module, section or code
Part, a part for the module, section or code, which includes that one or more is for implementing the specified logical function, to be held
Row instruction.It should also be noted that at some as in the realization method replaced, the function of being marked in box can also be to be different from
The sequence marked in attached drawing occurs.For example, two continuous boxes can essentially be basically executed in parallel, they are sometimes
It can execute in the opposite order, this is depended on the functions involved.It is also noted that every in block diagram and or flow chart
The combination of box in a box and block diagram and or flow chart can use function or the dedicated base of action as defined in executing
It realizes, or can be realized using a combination of dedicated hardware and computer instructions in the system of hardware.
In addition, each function module or unit in each embodiment of the present invention can integrate and to form an independence
Part, can also be modules individualism, can also two or more modules be integrated to form an independent portion
Point.
It, can be with if the function is realized and when sold or used as an independent product in the form of software function module
It is stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be expressed in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence, can not be interpreted as indicating or implying relative importance.And term " comprising ",
"comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process including a series of elements,
Method, article or equipment include not only those elements, but also include other elements that are not explicitly listed, or are also wrapped
It includes as elements inherent to such a process, method, article, or device.In the absence of more restrictions, by sentence " including
One ... " limit element, it is not excluded that there is also another in the process, method, article or apparatus that includes the element
Outer identical element.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.It should be noted that：Similar label and letter exist
Similar terms are indicated in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing
It is further defined and is explained.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. the transmission method of cinematic data, which is characterized in that including：
Data sending terminal samples cinematic data to be transmitted according to preset time interval, obtains multiple transmission datas
Frame；
The resolution ratio of multiple transmitting data frames is compared data sending terminal one by one with preset screen resolution；
When the resolution ratio of the transmitting data frame is more than or equal to the preset screen resolution, the data sending terminal
The resolution ratio is reduced into half, and extracts the transmitting data frame and is denoted as key frame, and the key frame is stored in local；
When the resolution ratio of the transmitting data frame is less than the preset screen resolution, the data sending terminal will be described point
Resolution reduces half, and the transmitting data frame is denoted as normal frames, and the normal frames are stored in local；
Data sending terminal is that the key frame and the normal frames establish playing time table according to the preset time interval；
Data sending terminal encodes the key frame using VC-1, obtains first coding data；
Data sending terminal, using H.263 encoding, obtains the second coded data to the normal frames；
It is logical that the first request channel, the second request channel and data transmission are established between data sending terminal and data receiver respectively
Road；
Data receiver sends out key frame to data sending terminal by the first request channel and obtains request and crucial key；
Data sending terminal creates the first dynamic password after receiving the key frame and obtaining request, and, by first dynamic
Password, the crucial key and the playing time table are overlapped, and obtain first kind encryption information；
Data sending terminal is encrypted the first coding data with first kind encryption information, and the first kind is encrypted and is believed
Breath, which is added to as the first packet header in the first coding data, forms the first transmission packet；
Data receiver sends out normal frames to data sending terminal by the second request channel and obtains request and common key；
Data sending terminal creates the second dynamic password after receiving the normal frames and obtaining request, and, by second dynamic
Password, the common key and the playing time table are overlapped, and obtain the second class encryption information；
Data sending terminal is encrypted second coded data with the second class encryption information, and the second class is encrypted and is believed
Breath, which is added to as the second packet header in second coded data, forms the second transmission packet；
Data receiver sends out key frame transmission request by the first request channel to data sending terminal；
Data receiver sends out normal frames transmission request by the second request channel to data sending terminal；
Data sending terminal is transmitted first transmission packet by the data transmission channel in the first period, data
Transmitting terminal is transmitted second transmission packet by the data transmission channel in the second period, wherein described
The tail portion of one period and the head of second period overlap.
2. the transmission method of cinematic data according to claim 1, which is characterized in that the data sending terminal will be to be transmitted
Cinematic data sampled according to preset time interval, obtain multiple transmitting data frames, including：
The data sending terminal obtains the cinematic data to be transmitted, wherein the cinematic data to be transmitted is continuous；
The data sending terminal obtains the broadcasting frequency of the data receiver, and, the time is carried out according to the broadcasting frequency
Sampling obtains the preset time interval；
The data sending terminal samples cinematic data to be transmitted according to the preset time interval, obtains multiple biographies
Transmission of data frame, wherein the transmitting data frame is discrete.
3. the transmission method of cinematic data according to claim 2, which is characterized in that the method further includes：
The data sending terminal pair key frame nearest with first packet header distance carries out even parity check, obtains the second encryption
Value；
The data sending terminal pair normal frames nearest with second packet header distance carry out even parity check, obtain the first encryption
Value；
The first kind encryption information and first secret value are weighted operation by the data sending terminal；
The second class encryption information and second secret value are weighted operation by the data sending terminal.
4. the transmission method of cinematic data according to claim 3, which is characterized in that the data sending terminal is at first
Section is transmitted first transmission packet by the data transmission channel, and data sending terminal passes through institute in the second period
It states data transmission channel to be transmitted second transmission packet, wherein the tail portion of first period and described second
The head of period overlaps, including：
The data sending terminal divides time shaft according to the preset transmission period, obtains multiple transmission cycles；
The transmission cycle is divided into first period and second period by the data sending terminal, wherein works as forward pass
The tail portion of first period in the defeated period and the head of second period overlap, and described first in current transmission period
The head of period and the tail portion of second period in a upper transmission cycle overlap, and described second in current transmission period
The head of first period in the tail portion of period and next transmission cycle overlaps；
First period of the data sending terminal in multiple transmission cycles is by the data transmission channel to described
One transmission packet is transmitted, and, the second period in the transmission cycle is by the data transmission channel to described
Second transmission packet is transmitted.
5. the transmission method of cinematic data according to claim 4, which is characterized in that the method further includes：
The data sending terminal receive the data receiver by first request channel send out first decryption ask
After asking, the first solution confidential information is sent to the data receiver, wherein the first solution confidential information is encrypted with the first kind
Information is corresponding；
The data sending terminal receive the data receiver by second request channel send out second decryption ask
After asking, the second solution confidential information is sent to the data receiver, wherein the second solution confidential information is encrypted with second class
Information is corresponding；
The data receiver solves confidential information with described first and is obtained to first transmission packet the first decryption oprerations of progress
The first cinematic data after to decryption；
The data receiver solves confidential information with described second and is obtained to second transmission packet the second decryption oprerations of progress
The second cinematic data after to decryption；
The resolution ratio of the first cinematic data after the decryption is increased into half, by point of the second cinematic data after the decryption
Resolution increases half, and, first cinematic data and second cinematic data after resolution ratio is increased are integrated, and are obtained
To complete cinematic data.
6. the transmission method of cinematic data according to claim 4, which is characterized in that the method further includes：
When the data transmission channel blocks, the data receiver detects first transmission packet received
Whether there is packet loss with second transmission packet；
When testing result is that first transmission packet packet loss occurs, occur from packet loss upper one of the data receiver
First transmission packet corresponding with the packet loss moment is transferred in the transmission cycle；
When testing result is that second transmission packet packet loss occurs, occur from packet loss upper one of the data receiver
Second transmission packet corresponding with the packet loss moment is transferred in the transmission cycle.
7. the transmission method of cinematic data according to claim 4, which is characterized in that the key key and described common
Include the location information of the data receiver in key.
8. the transmitting device of cinematic data, which is characterized in that including：
Cinematic data to be transmitted is sampled according to preset time interval for data sending terminal, is obtained by sampling module
Multiple transmitting data frames；
Resolution ratio comparing module differentiates the resolution ratio of multiple transmitting data frames and preset picture for data sending terminal
Rate is compared one by one；
Key-frame extraction module, for when the resolution ratio of transmitting data frame is more than or equal to preset screen resolution, counting
Resolution ratio is reduced into half according to transmitting terminal, and extracts transmitting data frame and is denoted as key frame, and key frame is stored in local；
Common frame extraction module is used for when the resolution ratio of transmitting data frame is less than preset screen resolution, data sending terminal
Resolution ratio is reduced into half, and transmitting data frame is denoted as normal frames, and normal frames are stored in local；
Playing time table establishes module, according to the preset time interval is the key frame and described for data sending terminal
Normal frames establish playing time table；
First coding module is encoded the key frame using VC-1 for data sending terminal, obtains first coding data；
Second coding module obtains the second coded number to the normal frames for data sending terminal using H.263 encoding
According to；
Path setup module, for establishing the first request channel, the second request between data sending terminal and data receiver respectively
Channel and data transmission channel；
First request module sends out key frame to data sending terminal by the first request channel for data receiver and obtains request
With crucial key；
First password acquisition module, for data sending terminal, the first dynamic of establishment is close after receiving the key frame and obtaining request
Code, and, first dynamic password, the crucial key and the playing time table are overlapped, first kind encryption is obtained
Information；
Place is encrypted to the first coding data with first kind encryption information for data sending terminal in first encrypting module
Reason, first kind encryption information is added to as the first packet header in the first coding data and forms the first transmission packet；
Second request module sends out normal frames to data sending terminal by the second request channel for data receiver and obtains request
And common key；
Second password acquisition module, for data sending terminal, the second dynamic of establishment is close after receiving the normal frames and obtaining request
Code, and, second dynamic password, the common key and the playing time table are overlapped, the encryption of the second class is obtained
Information；
Place is encrypted to second coded data with the second class encryption information for data sending terminal in second encrypting module
Reason, the second class encryption information is added to as the second packet header in second coded data and forms the second transmission packet；
First transmission request module sends out key frame transmission by the first request channel for data receiver to data sending terminal
Request；
Second transmission request module sends out normal frames transmission by the second request channel for data receiver to data sending terminal
Request；
Transmission module, for data sending terminal in the first period by the data transmission channel to first transmission packet
It is transmitted, data sending terminal passes second transmission packet by the data transmission channel in the second period
It is defeated, wherein the tail portion of first period and the head of second period overlap.
9. a kind of terminal, which is characterized in that including memory and processor, the memory supports processor to hold for storing
The program of any one of row claim 1 to 7 the method, the processor are configurable for executing and be stored in the memory
Program.
10. a kind of computer readable storage medium, computer program, feature are stored on the computer readable storage medium
The step of being, 1 to 7 any one of them method of the claims executed when the computer program is run by processor.
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| CN110430446A (en) * | 2019-07-26 | 2019-11-08 | 东软集团股份有限公司 | Method for processing video frequency, device, equipment and computer readable storage medium |
| CN114286098A (en) * | 2021-12-24 | 2022-04-05 | 威创集团股份有限公司 | Video encoding and decoding method, system, device and storage medium |
| WO2023071599A1 (en) * | 2021-10-29 | 2023-05-04 | 大唐移动通信设备有限公司 | Data transmission method and apparatus, device, and storage medium |
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| CN105847182A (en) * | 2016-04-18 | 2016-08-10 | 武汉烽火众智数字技术有限责任公司 | Method and system thereof for preferentially transmitting audio in audio and video system |
| US20180014041A1 (en) * | 2016-07-07 | 2018-01-11 | Time Warner Cable Enterprises Llc | Apparatus and methods for presentation of key frames in encrypted content |
| CN106658095A (en) * | 2016-10-18 | 2017-05-10 | 武汉斗鱼网络科技有限公司 | Webcasting video transmission method, server and user equipment |
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| CN110430446A (en) * | 2019-07-26 | 2019-11-08 | 东软集团股份有限公司 | Method for processing video frequency, device, equipment and computer readable storage medium |
| CN110430446B (en) * | 2019-07-26 | 2021-09-14 | 东软集团股份有限公司 | Video processing method, device, equipment and computer readable storage medium |
| WO2023071599A1 (en) * | 2021-10-29 | 2023-05-04 | 大唐移动通信设备有限公司 | Data transmission method and apparatus, device, and storage medium |
| CN114286098A (en) * | 2021-12-24 | 2022-04-05 | 威创集团股份有限公司 | Video encoding and decoding method, system, device and storage medium |
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