CN106686406B - For realizing the pretreated method and apparatus of video real-time transcoding - Google Patents
For realizing the pretreated method and apparatus of video real-time transcoding Download PDFInfo
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- CN106686406B CN106686406B CN201510744621.5A CN201510744621A CN106686406B CN 106686406 B CN106686406 B CN 106686406B CN 201510744621 A CN201510744621 A CN 201510744621A CN 106686406 B CN106686406 B CN 106686406B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
- H04N21/234309—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 or from Quicktime to Realvideo
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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, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440218—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4
Abstract
The present invention discloses one kind for realizing the pretreated method and apparatus of video real-time transcoding.Wherein after receiving transcoding task, select transcoding processing unit of the transcoding multiple greater than predetermined threshold TA as work disposal unit in resource pool, wherein TA is associated with maximum delay D and video segmentation predetermined minimum value S is played.If the transcoding multiple summation of T optional work disposal units is not less than 1, then source video is split, the video-frequency band of corresponding length is distributed for T optional work disposal units, to carry out parallel transcoding processing, wherein video segment length is associated with the transcoding multiple and work disposal unit number T-phase for playing maximum delay D, work disposal unit itself.The present invention according to the operational capability of transcoding processing unit and the real-time of transcoding task by constraining, intelligent scissor is carried out to source video, it is dispatched to corresponding transcoding processing unit progress parallel processing so that different size of video-frequency band will be divided into, to effectively improve transcoding efficiency while guaranteeing that transcoding task is real-time.
Description
Technical field
The present invention relates to network video field, in particular to it is a kind of for realizing the pretreated method of video real-time transcoding and
Device.
Background technique
As " triple play " and multimedia technology are fast-developing, especially network-multimedia application is increasingly widespread, isomery
Network and terminal constantly merge, and video data needs to be matched according to different application demands using different coded format and parameter
It sets.In order to solve the problems, such as video data in the distribution of different platform and share, transcoding technology is generally used at present, by source material
The coded format of target platform needs is converted to, and parameter setting is carried out according to specific environment, to adapt to be actually needed.
With the development of 4K video traffic, the video data volume be increased dramatically, and how carry out transcoding to 4K Large video file
As problem, distributed type assemblies transcoding technology comes into being, and conventional cluster task presses the segmentation of video fixed size, presses image group
(GOP) segmentation, by forms such as the segmentations of video segment (Slice).No matter based on that above-mentioned segmentation strategy, in transcoding energy
It all not can guarantee the real-time of transcoding in the environment of power isomery, the parallel transcoding capabilities of transcoding units can not be also utilized, video
It is divided into increasingly longer video-frequency band to promote transcoding efficiency.
Summary of the invention
The embodiment of the present invention provides one kind for realizing the pretreated method and apparatus of video real-time transcoding.It is big by dispatching
The transcoding processing unit of small different video-frequency band to different disposal ability carries out parallel transcoding, guarantees in video requirement of real-time
The lower transcoding processing for completing video-frequency band of constraint, can improve transcoding efficiency while guaranteeing that transcoding task is real-time.
According to an aspect of the present invention, one kind is provided for realizing the pretreated method of video real-time transcoding, comprising:
After receiving transcoding task, transcoding processing unit of the transcoding multiple greater than predetermined threshold TA is selected in resource pool
As work disposal unit, wherein TA is associated with maximum delay D and video segmentation predetermined minimum value S is played；
Judge the transcoding multiple summation of T optional work disposal units whether less than 1；
If the transcoding multiple summation of T optional work disposal units is not less than 1, source video is split, it can for T
The video-frequency band of work disposal unit distribution corresponding length is selected, to carry out parallel transcoding processing, wherein video segment length and broadcasting
The transcoding multiple of maximum delay D, work disposal unit itself is associated with work disposal unit number T-phase；
The transcoding information of T optional work disposal unit outputs is summarized, to complete video code conversion.
In one embodiment, predetermined threshold TA=S/ (D+S).
In one embodiment, source video is split, is the view that T optional work disposal units distribute corresponding length
The step of frequency range includes:
Judge whether the transcoding multiple of T optional work disposal units is identical；
If the transcoding multiple of T optional work disposal units is identical, (n+1)th time is T optional work disposal units point
The video segment length S matchedn+1Are as follows:
Sn+1=(Sn×(T-1)×A)/(1-A)
Wherein S1=(A × D)/(1-A), A are the transcoding multiple of work disposal unit, and n is the natural number greater than 0.
In one embodiment, if the transcoding multiple of T optional work disposal units is not exactly the same, for having most
Big transcoding multiple AmaxWork disposal unit, the video segment length S of the (n+1)th sub-distributionn+1Are as follows:
Sn+1=(Sn×(T-1)×Amax)/(1-Amax)
Wherein S1=(Amax×D)/(1-Amax), for non-maximum transcoding multiple AmWork disposal unit, (n+1)th
The video segment length S of sub-distributionm,n+1Are as follows:
Sm,n+1=(Am/Amax)×Sn+1；
Wherein Sm,1=(Am/Amax)×S1。
In one embodiment, if the transcoding multiple summation of T optional work disposal units is less than 1, refuse transcoding and appoint
Business.
According to another aspect of the present invention, one kind is provided for realizing the pretreated device of video real-time transcoding, including list
First selecting module, multiple summation identification module, Video segmentation unit and information collection unit, in which:
Unit selection module, for selecting transcoding multiple to be greater than predetermined door in resource pool after receiving transcoding task
Limit TA transcoding processing unit be used as work disposal unit, wherein TA with broadcasting maximum delay D and video segmentation predetermined minimum value S
It is associated；
Multiple summation identification module, for judging the transcoding multiple summation of T optional work disposal units whether less than 1；
Video segmentation unit, for the judging result according to multiple summation identification module, if T optional work disposal units
Transcoding multiple summation be not less than 1, then source video is split, is that the optional work disposal units of T distribute corresponding lengths
Video-frequency band wherein video segment length and plays maximum delay D, work disposal unit itself to carry out parallel transcoding processing
Transcoding multiple is associated with work disposal unit number T-phase；
Information collection unit, for summarizing the transcoding information of T optional work disposal unit outputs, to complete
Video code conversion.
In one embodiment, predetermined threshold TA=S/ (D+S).
In one embodiment, Video segmentation unit specifically judge T optional work disposal unit transcoding multiple whether
Identical, if the transcoding multiple of T optional work disposal units is identical, (n+1)th time is a optional work disposal units distribution of T
Video segment length Sn+1Are as follows:
Sn+1=(Sn×(T-1)×A)/(1-A)
Wherein S1=(A × D)/(1-A), A are the transcoding multiple of work disposal unit, and n is the natural number greater than 0.
In one embodiment, Video segmentation unit is also used to endless in the transcoding multiple of T optional work disposal units
When exactly the same, for having maximum transcoding multiple AmaxWork disposal unit, the video segment length S of the (n+1)th sub-distributionn+1Are as follows:
Sn+1=(Sn×(T-1)×Amax)/(1-Amax)
Wherein S1=(Amax×D)/(1-Amax), for non-maximum transcoding multiple AmWork disposal unit, (n+1)th
The video segment length S of sub-distributionm,n+1Are as follows:
Sm,n+1=(Am/Amax)×Sn+1；
Wherein Sm,1=(Am/Amax)×S1。
In one embodiment, multiple summation identification module is also used to the transcoding multiple in T optional work disposal units
When summation is less than 1, refuse transcoding task.
The present invention is constrained according to the operational capability of transcoding processing unit and the real-time of transcoding task, is carried out to source video
Intelligent scissor is dispatched to corresponding transcoding processing unit progress parallel processing to be divided into different size of video-frequency band, from
And transcoding efficiency can be improved while guaranteeing that transcoding task is real-time.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is schematic diagram of the present invention for realizing the pretreated method one embodiment of video real-time transcoding.
Fig. 2 is schematic diagram of the present invention for realizing the pretreated device one embodiment of video real-time transcoding.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or make
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
It is not limited the scope of the invention up to formula and numerical value.
Simultaneously, it should be appreciated that for ease of description, the size of various pieces shown in attached drawing is not according to reality
Proportionate relationship draw.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
Fig. 1 is schematic diagram of the present invention for realizing the pretreated method one embodiment of video real-time transcoding.Wherein:
Step 101, after receiving transcoding task, transcoding of the transcoding multiple greater than predetermined threshold TA is selected in resource pool
Processing unit is as work disposal unit, and wherein TA is associated with maximum delay D and video segmentation predetermined minimum value S is played.
Preferably, predetermined threshold TA=S/ (D+S).
For example, playing maximum delay D is 20 seconds, video segmentation can bring very big transcoding efficiency expense less than 5 seconds, therefore
Transcoding multiple should be greater than 5/ (20+5)=0.2.I.e. in this case, only transcoding of the selection transcoding multiple greater than 0.2 handles list
Member carries out transcoding processing.
Step 102, judge the transcoding multiple summation of T optional work disposal units whether less than 1.
In order to avoid excessively occupying resource, several optional work disposal lists can be selected in the work disposal unit selected
Member, as long as being able to satisfy transcoding multiple summation not less than 1, usual T is not more than 20.
Step 103, if the transcoding multiple summation of T optional work disposal units is not less than 1, source video is divided
It cuts, is the video-frequency band that the optional work disposal units of T distribute corresponding length, to carry out parallel transcoding processing, wherein video-frequency band
Length is associated with the transcoding multiple and work disposal unit number T-phase for playing maximum delay D, work disposal unit itself.
Step 104, the transcoding information by T optional work disposal unit outputs summarizes, to complete video code conversion.
In one embodiment, if the transcoding multiple summation of T optional work disposal units shows currently may be used less than 1
The transcoding resource used can not provide real-time transcoding, be rejected by transcoding task in this case.
Based on the above embodiment of the present invention provide for realizing the pretreated method of video real-time transcoding, pass through according to turning
The real-time constraint of the operational capability and transcoding task of code processing unit, carries out intelligent scissor to source video, to divide
Corresponding transcoding processing unit is dispatched to for different size of video-frequency band and carries out parallel processing, so as to guarantee transcoding task
While real-time, transcoding efficiency is improved.
Source video is split below and the operation of video-frequency band distribution is specifically described.
It is above-mentioned to be split source video, it is the step of T optional work disposal units distribute the video-frequency band of corresponding length
Can include:
First determine whether the transcoding multiple of T optional work disposal units is identical.If a optional work disposal unit of T
Transcoding multiple is identical, then (n+1)th video segment length S for T optional work disposal unit distributionn+1Are as follows:
Sn+1=(Sn×(T-1)×A)/(1-A)
Wherein S1=(A × D)/(1-A), A are the transcoding multiple of work disposal unit, and n is the natural number greater than 0.
For example, if the transcoding multiple for the 3 transcoding processing units selected is 0.5 institute can be calculated according to above-mentioned formula
The size of video segmentation is distributed, here it will again be assumed that playing maximum delay D is 20 seconds.
Divide for the first time: S1=(0.5 × 20)/(1-0.5)=20 second
Second of segmentation: S2=(S1× (T-1) × A)/(1-A)=(20 × 2 × 0.5)/(1-0.5)=40 second
Third time is divided: S3=(S2× (T-1) × A)/(1-A)=(40 × 2 × 0.5)/(1-0.5)=80 second
……
It follows that video fragment length can be longer in the backward.
In another embodiment, if the transcoding multiple of T optional work disposal units is not exactly the same, for having most
Big transcoding multiple AmaxWork disposal unit, the video segment length S of the (n+1)th sub-distributionn+1Are as follows:
Sn+1=(Sn×(T-1)×Amax)/(1-Amax)
Wherein S1=(Amax×D)/(1-Amax), for non-maximum transcoding multiple AmWork disposal unit, (n+1)th
The video segment length S of sub-distributionm,n+1Are as follows:
Sm,n+1=(Am/Amax)×Sn+1；
Wherein Sm,1=(Am/Amax)×S1。
For example, if the transcoding multiple for the 3 transcoding processing units selected is 0.5,0.5,0.3, i.e. AAB mode, due to 3
The transcoding multiple of transcoding processing unit is not fully identical, it is therefore desirable to be respectively processed.
2 transcodings processing unit C1 and C2 for being 0.5 for transcoding multiple can then be calculated according to above-mentioned formula and be distributed view
The size of frequency division section, here it will again be assumed that playing maximum delay D is 20 seconds.
Divide for the first time: S1=(0.5 × 20)/(1-0.5)=20 second
Second of segmentation: S2=(S1× (T-1) × A)/(1-A)=(20 × 2 × 0.5)/(1-0.5)=40 second
Third time is divided: S3=(S2× (T-1) × A)/(1-A)=(40 × 2 × 0.5)/(1-0.5)=80 second
……
Since the ratio between the transcoding multiple that the transcoding multiple of the 3rd transcoding processing unit C3 is 0.3, C3 and C1 and C2 is 3/5.
Therefore, for C3, this proportionate relationship video segment length will be determined according to 3/5:
Divide for the first time: S1=20 × (3/5)=12 second
Second of segmentation: S2=40 × (3/5)=24 second
Third time is divided: S3=80 × (3/5)=48 second
……
Fig. 2 is schematic diagram of the present invention for realizing the pretreated device one embodiment of video real-time transcoding.Such as Fig. 2 institute
Show, which may include that Unit selection module 201, multiple summation identification module 202, Video segmentation unit 203 and information summarize
Unit 204.Wherein:
Unit selection module 201, for selecting transcoding multiple to be greater than in resource pool and making a reservation for after receiving transcoding task
The transcoding processing unit of thresholding TA is as work disposal unit, and wherein TA and broadcasting maximum delay D and video segmentation are predetermined minimum
Value S is associated.
Preferably, predetermined threshold TA=S/ (D+S).
Multiple summation identification module 202, for judging whether the transcoding multiple summation of T optional work disposal units is less than
1。
Video segmentation unit 203, for the judging result according to multiple summation identification module 202, if at T optional work
The transcoding multiple summation for managing unit is not less than 1, then is split source video, is that T optional work disposal unit distribution are corresponding
The video-frequency band of length, to carry out parallel transcoding processing, wherein video segment length and play maximum delay D, work disposal unit
The transcoding multiple of itself is associated with work disposal unit number T-phase.
Information collection unit 204, for the transcoding information of T optional work disposal unit outputs to be summarized, so as to
Complete video code conversion.
Preferably, multiple summation identification module 202 is also used to small in the transcoding multiple summation of T optional work disposal units
When 1, refuse transcoding task.
Based on the above embodiment of the present invention provide for realizing the pretreated device of video real-time transcoding, pass through according to turning
The real-time constraint of the operational capability and transcoding task of code processing unit, carries out intelligent scissor to source video, to divide
Corresponding transcoding processing unit is dispatched to for different size of video-frequency band and carries out parallel processing, so as to guarantee transcoding task
While real-time, transcoding efficiency is improved.
In one embodiment, Video segmentation unit 203 specifically judges that the transcoding multiple of T optional work disposal units is
No identical, if the transcoding multiple of T optional work disposal units is identical, (n+1)th time is T optional work disposal unit distribution
Video segment length Sn+1Are as follows:
Sn+1=(Sn×(T-1)×A)/(1-A)
Wherein S1=(A × D)/(1-A), A are the transcoding multiple of work disposal unit, and n is the natural number greater than 0.
Preferably, Video segmentation unit 203 is also used to not exactly the same in the transcoding multiple of T optional work disposal units
When, for having maximum transcoding multiple AmaxWork disposal unit, the video segment length S of the (n+1)th sub-distributionn+1Are as follows:
Sn+1=(Sn×(T-1)×Amax)/(1-Amax)
Wherein S1=(Amax×D)/(1-Amax), for non-maximum transcoding multiple AmWork disposal unit, (n+1)th
The video segment length S of sub-distributionm,n+1Are as follows:
Sm,n+1=(Am/Amax)×Sn+1
Wherein Sm,1=(Am/Amax)×S1。
By applying the present invention, it is available following the utility model has the advantages that
1, the present invention carries out source video segmentation not only according to the complexity of transcoding, is also adapted to cluster transcoding each processing unit
Transcoding capabilities formulate the strategy of segmentation；
2, for the present invention under real-time constraint, the video-frequency band for being divided into length different source video is dispatched to different disposal
The transcoding units of ability carry out transcoding, guarantee the timeliness of each transcoding units processing；
3, intelligent scissor algorithm of the invention can regard source with the enhancing of cluster transcoding unit increased with ability
Frequency division is cut into increasingly longer video-frequency band, improves the efficiency of transcoding；
4, the present invention especially adapts to carry out on-demand real-time transcoding to 4K video under cloud environment, this is to be flowed using single machine to 4K
The system of media transcoding can not function not available for the attainable and prior art.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
Description of the invention is given for the purpose of illustration and description, and is not exhaustively or will be of the invention
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.It selects and retouches
It states embodiment and is to more preferably illustrate the principle of the present invention and practical application, and those skilled in the art is enable to manage
The solution present invention is to design various embodiments suitable for specific applications with various modifications.
Claims (8)
1. one kind is for realizing the pretreated method of video real-time transcoding characterized by comprising
After receiving transcoding task, selected in resource pool transcoding multiple greater than predetermined threshold TA transcoding processing unit as
Work disposal unit, wherein TA is associated with maximum delay D and video segmentation predetermined minimum value S is played；
Judge the transcoding multiple summation of T optional work disposal units whether less than 1；
If the transcoding multiple summation of the T optional work disposal units is not less than 1, source video is split, is the T
The video-frequency band of a optional work disposal unit distribution corresponding length, to carry out parallel transcoding processing, wherein video segment length with
Play maximum delay D, the transcoding multiple of work disposal unit itself is associated with work disposal unit number T-phase；
The transcoding information of the T optional work disposal unit outputs is summarized, to complete video code conversion；
Wherein, predetermined threshold TA=S/ (D+S).
2. the method according to claim 1, wherein
Source video is split, is that the step of T optional work disposal units distribute the video-frequency band of corresponding length includes:
Judge whether the transcoding multiple of the T optional work disposal units is identical；
If the transcoding multiple of the T optional work disposal units is identical, (n+1)th time is the T optional work disposal lists
The video segment length S of member distributionn+1Are as follows:
Sn+1=(Sn×(T-1)×A)/(1-A)；
Wherein S1=(A × D)/(1-A), A are the transcoding multiple of work disposal unit, and n is the natural number greater than 0.
3. according to the method described in claim 2, it is characterized in that,
If the transcoding multiple of the T optional work disposal units is not exactly the same, for having maximum transcoding multiple Amax's
Work disposal unit, the video segment length S of the (n+1)th sub-distributionn+1Are as follows:
Sn+1=(Sn×(T-1)×Amax)/(1-Amax)；
Wherein S1=(Amax×D)/(1-Amax), for non-maximum transcoding multiple AmWork disposal unit, (n+1)th time point
The video segment length S matchedm,n+1Are as follows:
Sm,n+1=(Am/Amax)×Sn+1；
Wherein Sm,1=(Am/Amax)×S1。
4. method according to any one of claim 1-3, which is characterized in that
If the transcoding multiple summation of the T optional work disposal units refuses transcoding task less than 1.
5. one kind is for realizing the pretreated device of video real-time transcoding, which is characterized in that total including Unit selection module, multiple
With identification module, Video segmentation unit and information collection unit, in which:
Unit selection module, for selecting transcoding multiple to be greater than predetermined threshold TA in resource pool after receiving transcoding task
Transcoding processing unit as work disposal unit, wherein TA is related to maximum delay D and video segmentation predetermined minimum value S is played
Connection, predetermined threshold TA=S/ (D+S)；
Multiple summation identification module, for judging the transcoding multiple summation of T optional work disposal units whether less than 1；
Video segmentation unit, for the judging result according to multiple summation identification module, if the T optional work disposal units
Transcoding multiple summation be not less than 1, then source video is split, is that the optional work disposal units distribution of the T is corresponding long
The video-frequency band of degree, to carry out parallel transcoding processing, wherein video segment length and play maximum delay D, work disposal unit from
The transcoding multiple of body is associated with work disposal unit number T-phase；
Information collection unit, for summarizing the transcoding information of the T optional work disposal unit outputs, to complete
Video code conversion.
6. device according to claim 5, which is characterized in that
Video segmentation unit specifically judges whether the transcoding multiple of the T optional work disposal units is identical, if the T can
Select the transcoding multiple of work disposal unit identical, then (n+1)th video segment length for the T optional work disposal unit distribution
Spend Sn+1Are as follows:
Sn+1=(Sn×(T-1)×A)/(1-A)；
Wherein S1=(A × D)/(1-A), A are the transcoding multiple of work disposal unit, and n is the natural number greater than 0.
7. device according to claim 6, which is characterized in that
Video segmentation unit is also used to when the transcoding multiple of the T optional work disposal units is not exactly the same, for tool
There is maximum transcoding multiple AmaxWork disposal unit, the video segment length S of the (n+1)th sub-distributionn+1Are as follows:
Sn+1=(Sn×(T-1)×Amax)/(1-Amax)；
Wherein S1=(Amax×D)/(1-Amax), for non-maximum transcoding multiple AmWork disposal unit, (n+1)th time point
The video segment length S matchedm,n+1Are as follows:
Sm,n+1=(Am/Amax)×Sn+1；
Wherein Sm,1=(Am/Amax)×S1。
8. the device according to any one of claim 5-7, which is characterized in that
Multiple summation identification module is also used to when the transcoding multiple summation of the T optional work disposal units is less than 1, refusal
Transcoding task.
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| CN108391082A (en) * | 2017-12-18 | 2018-08-10 | 武汉烽火众智数字技术有限责任公司 | It is a kind of based on GB28181 agreements target structural service cut-in method, device and system |
| US11611784B2 (en) | 2019-08-02 | 2023-03-21 | Dao Lab Limited | System and method for transferring large video files with reduced turnaround time |
| CN113709522A (en) * | 2020-05-22 | 2021-11-26 | 中兴通讯股份有限公司 | Method, device and equipment for processing monitoring video and storage medium |
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