CN109660740A - A kind of video editing method based on three code rates - Google Patents
A kind of video editing method based on three code rates Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
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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
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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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
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Abstract
The invention discloses a kind of video editing methods based on three code rates, are related to video editing techniques field, and the present invention includes S1: obtaining original video, carry out three code rate transcodings to original video, obtain transcoded material block group；S2: for different editor's demands, different editor's entrances is selected to carry out three code rate editors to transcoded material block group, and after completing the editing, for the different corresponding editing parameters of editor's portal generation, the editing parameter has recorded each generic operation to transcoded material block group；S3: the editing parameter type generated according to S2, synthesis transcoding is carried out to edited transcoded material block group using corresponding synthesis transcoding strategy, complete editing process, obtain clean up editing video, the present invention considers the distribution object and scene of video and audio as a whole, video editing efficiency is effectively increased, video editing apparatus lower deployment cost is significantly reduced.
Description
Technical field
The present invention relates to video editing techniques fields, more particularly to a kind of video editing side based on three code rates
Method.
Background technique
With the development of medium technique, audio-visual content is constantly towards more realistic, clearly direction is advanced, in this process
In also result in the parameters such as video pictures resolution ratio, dynamic range, color gamut space and constantly promoted: resolution ratio is from HD to UHD, dynamic
Range is constantly promoted from SDR to HDR, from low colour gamut to high colour gamut.It is also resulted in while medium technique high speed development a series of
Problem, such as large quantities of hardware devices that the HD epoch dispose how are maximally utilized, developed with reducing broadcasting and TV media industry in UHD
Cost in tide.
Broadcasting and TV media industry needs to carry out Edit and Compose to video and audio material, gradually forms final program finished product, however wide
The program material code rate for broadcasting grade is often very high, if directly carrying out editing and processing to it, needs hard by very high system is configured
Part, editorial efficiency are lower.Currently, the problem low for editorial efficiency, mainly uses following two countermeasure:
1, whether it is HDR according to the dynamic range of raw data, and the support/hardware of HDR is not supported to carry out is respectively adopted
Editor, but SDR and HDR edits to isolate and be come by this mode completely, editorial efficiency still very low, high quality media editing field
It is still very big that pressure is edited under scape, needs to dispose a large amount of editor's node for supporting HDR；
2, edit methods are divided by the accuracy requirement of application scenarios: if editor's required precision is very high, is made of fine works
Method be for example equipped with HDR monitor, generate HDR video content；If edit request is less high, using the side of thick establishment work
Formula is for example equipped with SDR monitor, generates SDR video content；This mode can improve system editorial efficiency to a certain extent,
But fine works and the separation of thick volume process are isolated, and supplement relationship is not formed.
Summary of the invention
It is an object of the invention to: SDR and HDR are edited in order to solve existing video editing method and isolates the place that comes
The problem of reason, editorial efficiency is low, and needs to configure different editing equipments, higher cost, the present invention provide a kind of based on three
The video editing method of code rate considers the distribution object and scene of video and audio as a whole, effectively improves video editing efficiency, substantially drop
Low video editing apparatus lower deployment cost.
The present invention specifically uses following technical scheme to achieve the goals above:
A kind of video editing method based on three code rates, includes the following steps:
S1: obtaining original video, carries out three code rate transcodings to original video, obtains transcoded material block group, three code rate
Transcoding are as follows: original video is sliced as several material blocks first, obtains original code rate video block, then to all material blocks into
Row transcoding, respectively obtains thick encoding rate video block and browsing bit-rate video block, and transcoded material block group is by original code rate video block, thick
Encoding rate video block corresponds to the material block composition of period with browsing bit-rate video block；
S2: for different editor's demands, selecting different editor's entrances to carry out three code rate editors to transcoded material block group,
And after completing the editing, for the different corresponding editing parameters of editor's portal generation, the editing parameter have recorded to turn
Each generic operation of code material block group；
S3: the editing parameter type generated according to S2, using corresponding synthesis transcoding strategy to edited transcoded material
Block group carries out synthesis transcoding, completes editing process, obtains clean up editing video.
Further, transcoding strategy, the original video picture class are adjusted according to original video picture type in the S1
Type is 3840*2160 or 1920*1080.
Further, when original video picture type is 3840*2160, three code rate transcodings are carried out specifically:
A, it generates the thick encoding rate video block of UHD: down-sampling being carried out to 3840*2160 picture, is converted into a quarter
Picture, and the dynamic range and colour gamut of original code rate video block are inherited, the code rate after conversion is the thick encoding rate of UHD, after conversion
Video be the thick encoding rate video block of UHD；
B, it generates UHD and browses bit-rate video block: down-sampling being carried out to 3840*2160 picture, is converted into 1/8th
Picture；If the dynamic range of original code rate video block is HDR, HDR is downconverted into SDR on demand；And original code rate is regarded on demand
The gamut transform of frequency block is Rec.709, and the code rate after conversion is UHD browsing code rate, and the video after conversion is UHD browsing code
Rate video block.
Further, when original video picture type is 1920*1080, three code rate transcodings are carried out specifically:
C, it generates the thick encoding rate video block of HD: down-sampling is carried out to 1920*1080 picture, be converted into a quarter picture
Width；If the dynamic range of original code rate video block is HDR, HDR is downconverted into SDR on demand, the code rate after conversion is HD thick
Encoding rate, the video after conversion are the thick encoding rate video block of HD；
D, generate HD browse bit-rate video block: HD browse code rate quote the thick encoding rate of HD, then HD browse bit-rate video block with
The thick encoding rate video block of HD is identical.
Further, in the S2, editor entrance include editor entrance 1, editor entrance 2 and editor entrance 3, to turn
Code material block group carries out quick short course, then selects editor's entrance 1 to start internet Web and edit；To straight to transcoded material block group
It taps into that row is thick to be compiled, then editor's entrance 2 is selected to start slightly to work out and make, editor is equipped with SDR monitor reply HDR material and slightly compiles, will
Transcoded material block group is exported to SDR monitor, first by the brightness of image of transcoded material block group according to SDR monitor brightness into
Row adjustment shows situation to simulate SDR monitor；To directly carry out fine works to transcoded material block group, then editor's entrance 3 is selected
Start to edit.
Further, selection editor entrance 1 carries out three code rate editors in the S2 specifically: is regarded using browsing code rate
Frequency block material carries out internet Web and edits, and after the completion of editor, generates editing parameter 1, judges whether to need further to edit；
If desired, then corresponding thick encoding rate video block is selected in transcoded material block group referring to editing parameter 1, then will
Editing parameter 1 and the thick volume process of thick encoding rate video block input；If not needing, by the output of editing parameter 1 to S3；
Further, selection editor entrance 2 carries out three code rate editors in the S2 specifically: uses thick encoding rate video block
Material is edited, and after the completion of editor, is generated editing parameter 2, is judged whether to need further to edit；
If desired, then corresponding original code rate video block is selected in transcoded material block group referring to editing parameter 2, then will
Editing parameter 2 and original code rate video block input fine works process；If not needing, by the output of editing parameter 2 to S3；
Further, selection editor entrance 3 carries out three code rate editors in the S2 specifically: uses original code rate video block
Material is edited, and after the completion of editor, generates editing parameter 3, by the output of editing parameter 3 to S3.
Further, HDR fine works can be carried out in such a way that code rate is promoted after selection editor's entrance 1 or editor's entrance 2
Production, specifically:
If selection editor entrance 1 edited after, need further to edit, then using thick encoding rate video block material into
After edlin, editing parameter 2 is generated in conjunction with editing parameter 1；If also needing further to edit, original code rate video block is being used
After material is edited, editing parameter 3 is generated in conjunction with editing parameter 1 and editing parameter 2；
If selection editor entrance 2 edited after, need further to edit, then using original code rate video block material into
After edlin, editing parameter 3 is generated in conjunction with editing parameter 2.
Further, transcoding is synthesized in the S3 specifically:
For editing parameter 1: synthesizing the video of 960*540 picture, dynamic using original code rate video block and editing parameter 1
Range is converted to SDR on demand, and colour gamut is converted to Rec.709 on demand；
For editing parameter 2: synthesizing the video of 1920*1080 picture using original code rate video block and editing parameter 2, move
State range inherits original code rate, and is 960*540 picture by the 1920*1080 picture transcoding of synthesis, and original code rate video block is dynamic
State range is then converted to SDR, original code rate video block colour gamut is if not Rec.709, then be converted on demand if not SDR on demand
Rec.709；
For editing parameter 3: synthesizing the video of 3840*2160 picture using original code rate video block and editing parameter 3, move
State range inherits original code rate video block, and is 1920*1080 picture by the 3840*2160 picture transcoding of synthesis, inherits synthesis
3840*2160 picture video dynamic range；The 1920*1080 picture transcoding that transcoding is obtained simultaneously is 960*540 picture,
Original code rate video block dynamic range is if not SDR, then be converted to SDR on demand.
Beneficial effects of the present invention are as follows:
1, the present invention is according to the characteristics of material difference code rate and usage scenario, proposing a kind of properly to generate, use and manage
The method of three code rate files of material, in different editor's occasion reasonable employment difference code rate files, so that the effect of editing system
Rate is substantially increased.
2, the present invention edits the file of different code rates, can configure the node of different performance, and if desired editor UHD was regarded in the past
Frequently, need to be equipped with the high-performance node that multiple support UHD are edited, and system storage and bandwidth demand it is very big, cost is very
It is expensive；And three code rate systems of the invention are used, some support UHD high-performance node edited can be replaced with and HD is supported to compile
Volume or internet editor lower-performance node, the deployment price of entire editing system can be made to substantially reduce.
Detailed description of the invention
Fig. 1 is method flow schematic diagram of the invention.
Fig. 2 is the flow diagram of three code rate transcodings of the invention.
Fig. 3 is the flow diagram of three code rate editors of the invention.
Specific embodiment
In order to which those skilled in the art better understand the present invention, with reference to the accompanying drawing with following embodiment to the present invention
It is described in further detail.
Embodiment 1
As shown in Figure 1, Figure 2 and Figure 3, the present embodiment provides a kind of video editing method based on three code rates, including it is as follows
Step:
S1: obtaining original video, carries out three code rate transcodings to original video, obtains transcoded material block group, three code rate
Transcoding are as follows: original video is sliced as several material blocks first, obtains original code rate video block, then to all material blocks into
Row transcoding, respectively obtains thick encoding rate video block and browsing bit-rate video block, and transcoded material block group is by original code rate video block, thick
Encoding rate video block corresponds to the material block composition of period with browsing bit-rate video block；The original video picture type is 3840*
2160 or 1920*1080 carries out three code rate transcodings when original video picture type is 3840*2160 specifically:
A, it generates the thick encoding rate video block of UHD: down-sampling being carried out to 3840*2160 picture, is converted into a quarter
Picture, and the dynamic range and colour gamut of original code rate video block are inherited, the code rate after conversion is the thick encoding rate of UHD, after conversion
Video be the thick encoding rate video block of UHD；
B, it generates UHD and browses bit-rate video block: down-sampling being carried out to 3840*2160 picture, is converted into 1/8th
Picture；If the dynamic range of original code rate video block is HDR, HDR is downconverted into SDR on demand；And original code rate is regarded on demand
The gamut transform of frequency block is Rec.709, and the code rate after conversion is UHD browsing code rate, and the video after conversion is UHD browsing code
Rate video block；
When original video picture type is 1920*1080, three code rate transcodings are carried out specifically:
C, it generates the thick encoding rate video block of HD: down-sampling is carried out to 1920*1080 picture, be converted into a quarter picture
Width；If the dynamic range of original code rate video block is HDR, HDR is downconverted into SDR on demand, the code rate after conversion is HD thick
Encoding rate, the video after conversion are the thick encoding rate video block of HD；
D, generate HD browse bit-rate video block: HD browse code rate quote the thick encoding rate of HD, then HD browse bit-rate video block with
The thick encoding rate video block of HD is identical；
S2: for different editor's demands, selecting different editor's entrances to carry out three code rate editors to transcoded material block group,
And after completing the editing, for the different corresponding editing parameters of editor's portal generation, the editing parameter have recorded to turn
Each generic operation of code material block group；
Entrance is edited to include editor's entrance 1, editor's entrance 2 and edit entrance 3, it is quick to be carried out to transcoded material block group
Short course then selects editor's entrance 1 to start internet Web and edits；To directly slightly compile transcoded material block group, then select to compile
Volume entrance 2 starts slightly to work out and make, and editor is equipped with SDR monitor reply HDR material and slightly compiles, by transcoded material block group export to
Before SDR monitor, the brightness of image of transcoded material block group first be could be adjusted into simulation SDR prison according to the brightness of SDR monitor
Visual organ shows situation；To directly carry out fine works to transcoded material block group, then editor's entrance 3 is selected to start to edit；
Selection editor's entrance 1 carries out three code rate editors specifically: carries out internet Web using browsing bit-rate video block material
It edits, after the completion of editor, generates editing parameter 1, judge whether to need further to edit；
If desired, then code rate promotion is carried out, the code rate promotes the element that higher code rate is selected in transcoded material block group
Material block replaces former low bit- rate material block and participates in follow-up editor, specially selects in transcoded material block group pair referring to editing parameter 1
The thick encoding rate video block answered, then by editing parameter 1 and the thick volume process of thick encoding rate video block input；It, will if not needing
Editing parameter 1 is exported to S3；
Selection editor's entrance 2 carries out three code rate editors specifically: is edited, is edited using thick encoding rate video block material
After the completion, editing parameter 2 is generated, judges whether to need further to edit；
If desired, then code rate promotion is carried out, selects corresponding original code rate in transcoded material block group referring to editing parameter 2
Then editing parameter 2 and original code rate video block are inputted fine works process by video block；If not needing, editing parameter 2 is exported
To S3；
Selection editor's entrance 3 carries out three code rate editors specifically: is edited, is edited using original code rate video block material
After the completion, editing parameter 3 is generated, by the output of editing parameter 3 to S3；
In the present embodiment HDR fine works can be carried out in such a way that code rate is promoted after selection editor's entrance 1 or editor's entrance 2
Production, specifically:
If selection editor entrance 1 edited after, need further to edit, then using thick encoding rate video block material into
After edlin, editing parameter 2 is generated in conjunction with editing parameter 1；If also needing further to edit, original code rate video block is being used
After material is edited, editing parameter 3 is generated in conjunction with editing parameter 1 and editing parameter 2；
If selection editor entrance 2 edited after, need further to edit, then using original code rate video block material into
After edlin, editing parameter 3 is generated in conjunction with editing parameter 2；
S3: the editing parameter type generated according to S2, using corresponding synthesis transcoding strategy to edited transcoded material
Block group carries out synthesis transcoding, completes editing process, obtains clean up editing video, the synthesis transcoding specifically:
For editing parameter 1: synthesizing the video of 960*540 picture, dynamic using original code rate video block and editing parameter 1
Range is converted to SDR on demand, and colour gamut is converted to Rec.709 on demand；
For editing parameter 2: synthesizing the video of 1920*1080 picture using original code rate video block and editing parameter 2, move
State range inherits original code rate, and is 960*540 picture by the 1920*1080 picture transcoding of synthesis, and original code rate video block is dynamic
State range is then converted to SDR, original code rate video block colour gamut is if not Rec.709, then be converted on demand if not SDR on demand
Rec.709；
For editing parameter 3: synthesizing the video of 3840*2160 picture using original code rate video block and editing parameter 3, move
State range inherits original code rate video block, and is 1920*1080 picture by the 3840*2160 picture transcoding of synthesis, inherits synthesis
3840*2160 picture video dynamic range；The 1920*1080 picture transcoding that transcoding is obtained simultaneously is 960*540 picture,
Original code rate video block dynamic range is if not SDR, then be converted to SDR on demand.
The above, only presently preferred embodiments of the present invention, are not intended to limit the invention, patent protection model of the invention
It encloses and is subject to claims, it is all to change with equivalent structure made by specification and accompanying drawing content of the invention, similarly
It should be included within the scope of the present invention.
Claims (10)
1. a kind of video editing method based on three code rates, which comprises the steps of:
S1: obtaining original video, carries out three code rate transcodings to original video, obtains transcoded material block group, the three code rates transcoding
Are as follows: original video is sliced as several material blocks first, original code rate video block is obtained, then all material blocks is turned
Code respectively obtains thick encoding rate video block and browsing bit-rate video block, and transcoded material block group is by original code rate video block, thick coding
Rate video block corresponds to the material block composition of period with browsing bit-rate video block；
S2: for different editor's demands, selecting different editor's entrances to carry out three code rate editors to transcoded material block group, and
After completing the editing, for the different corresponding editing parameters of editor's portal generation, the editing parameter is had recorded to transcoding element
Each generic operation of material block group；
S3: the editing parameter type generated according to S2, using corresponding synthesis transcoding strategy to edited transcoded material block group
Synthesis transcoding is carried out, editing process is completed, obtains clean up editing video.
2. a kind of video editing method based on three code rates according to claim 1, which is characterized in that basis in the S1
Original video picture type adjusts transcoding strategy, and the original video picture type is 3840*2160 or 1920*1080.
3. a kind of video editing method based on three code rates according to claim 2, which is characterized in that when original video is drawn
When width type is 3840*2160, three code rate transcodings are carried out specifically:
A, it generates the thick encoding rate video block of UHD: down-sampling being carried out to 3840*2160 picture, is converted into a quarter picture,
And the dynamic range and colour gamut of original code rate video block are inherited, the code rate after conversion is the thick encoding rate of UHD, the video after conversion
The thick encoding rate video block of as UHD；
B, it generates UHD and browses bit-rate video block: down-sampling being carried out to 3840*2160 picture, is converted into 1/8th pictures；
If the dynamic range of original code rate video block is HDR, HDR is downconverted into SDR on demand；And on demand by original code rate video block
Gamut transform is Rec.709, and the code rate after conversion is UHD browsing code rate, and the video after conversion is UHD browsing bit-rate video
Block.
4. a kind of video editing method based on three code rates according to claim 2, which is characterized in that when original video is drawn
When width type is 1920*1080, three code rate transcodings are carried out specifically:
C, it generates the thick encoding rate video block of HD: down-sampling being carried out to 1920*1080 picture, is converted into a quarter picture；
If the dynamic range of original code rate video block is HDR, HDR is downconverted into SDR on demand, the code rate after conversion is that HD is slightly encoded
Rate, the video after conversion are the thick encoding rate video block of HD；
D, generate HD and browse bit-rate video block: HD browses code rate and quotes the thick encoding rate of HD, then HD browses bit-rate video block and HD is thick
Encoding rate video block is identical.
5. a kind of video editing method based on three code rates according to claim 1, which is characterized in that in the S2, compile
Collecting entrance includes editor's entrance 1, editor's entrance 2 and editor's entrance 3, to the quick short course of transcoded material block group progress, then select
Editor's beginning of entrance 1 internet Web is selected to edit；To directly slightly be compiled to transcoded material block group, then editor's entrance 2 is selected to open
Begin thick establishment work, and editor is equipped with SDR monitor reply HDR material and slightly compiles, exports by transcoded material block group to SDR monitor
Before, first the brightness of image of transcoded material block group is adjusted according to the brightness of SDR monitor；To straight to transcoded material block group
Row fine works is tapped into, then editor's entrance 3 is selected to start to edit.
6. a kind of video editing method based on three code rates according to claim 5, which is characterized in that selected in the S2
It edits entrance 1 and carries out three code rate editors specifically: edited using browsing bit-rate video block material, after the completion of editor, generated
Editing parameter 1 judges whether to need further to edit；
If desired, then corresponding thick encoding rate video block is selected in transcoded material block group referring to editing parameter 1, it then will editor
Parameter 1 and the thick volume process of thick encoding rate video block input；If not needing, by the output of editing parameter 1 to S3.
7. a kind of video editing method based on three code rates according to claim 6, which is characterized in that selected in the S2
It edits entrance 2 and carries out three code rate editors specifically: edited using thick encoding rate video block material, after the completion of editor, generated
Editing parameter 2 judges whether to need further to edit；
If desired, then corresponding original code rate video block is selected in transcoded material block group referring to editing parameter 2, it then will editor
Parameter 2 and original code rate video block input fine works process；If not needing, by the output of editing parameter 2 to S3.
8. a kind of video editing method based on three code rates according to claim 7, which is characterized in that selected in the S2
It edits entrance 3 and carries out three code rate editors specifically: edited using original code rate video block material, after the completion of editor, generated
Editing parameter 3, by the output of editing parameter 3 to S3.
9. a kind of video editing method based on three code rates according to claim 8, it is characterised in that: selection editor's entrance
1 or editor entrance 2 after can code rate promoted by way of carry out HDR fine works production, specifically:
If needing further to edit, then being compiled using thick encoding rate video block material after selection editor's entrance 1 is edited
After volume, editing parameter 2 is generated in conjunction with editing parameter 1；If also needing further to edit, original code rate video block material is being used
After being edited, editing parameter 3 is generated in conjunction with editing parameter 1 and editing parameter 2；If being needed after selection editor's entrance 2 is edited
It further to edit, then after being edited using original code rate video block material, generate editing parameter 3 in conjunction with editing parameter 2.
10. a kind of video editing method based on three code rates according to claim 8 or claim 9, which is characterized in that in the S3
Synthesize transcoding specifically:
For editing parameter 1: synthesizing the video of 960*540 picture, dynamic range using original code rate video block and editing parameter 1
SDR is converted on demand, colour gamut is converted to Rec.709 on demand；
For editing parameter 2: synthesizing the video of 1920*1080 picture, dynamic model using original code rate video block and editing parameter 2
It encloses and inherits original code rate, and be 960*540 picture, original code rate video block dynamic model by the 1920*1080 picture transcoding of synthesis
It encloses if not SDR, then be converted to SDR, original code rate video block colour gamut is if not Rec.709, then be converted on demand on demand
Rec.709；
For editing parameter 3: synthesizing the video of 3840*2160 picture, dynamic model using original code rate video block and editing parameter 3
It encloses and inherits original code rate video block, and be 1920*1080 picture by the 3840*2160 picture transcoding of synthesis, inherit synthesis
The dynamic range of 3840*2160 picture video；The 1920*1080 picture transcoding that transcoding is obtained simultaneously is 960*540 picture, former
Beginning bit-rate video block dynamic range is if not SDR, then be converted to SDR on demand.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112104894A (en) * | 2020-11-18 | 2020-12-18 | 成都索贝数码科技股份有限公司 | Ultra-high-definition video editing method based on breadth transformation |
| CN112653930A (en) * | 2020-11-25 | 2021-04-13 | 北京风行在线技术有限公司 | Video editing method and system |
| CN114222187A (en) * | 2021-08-12 | 2022-03-22 | 荣耀终端有限公司 | Video editing method and electronic equipment |
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