CN105979169A - Video subtitle adding method, device and terminal - Google Patents
Video subtitle adding method, device and terminal Download PDFInfo
- Publication number
- CN105979169A CN105979169A CN201510938608.3A CN201510938608A CN105979169A CN 105979169 A CN105979169 A CN 105979169A CN 201510938608 A CN201510938608 A CN 201510938608A CN 105979169 A CN105979169 A CN 105979169A
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- Prior art keywords
- captions
- video
- picture
- frame
- time range
- Prior art date
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Classifications
-
- 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
- H04N5/278—Subtitling
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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
- H04N21/440245—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 the reformatting operation being performed only on part of the stream, e.g. a region of the image or a time segment
-
- 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
- H04N21/47—End-user applications
- H04N21/488—Data services, e.g. news ticker
- H04N21/4884—Data services, e.g. news ticker for displaying subtitles
-
- 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
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/8547—Content authoring involving timestamps for synchronizing content
Abstract
The invention provides a video subtitle adding method, device and terminal. The method comprises the steps that a number of transparent subtitle pictures named after a time range are generated, for example, T1 and T2 represent two time points; T1 is less than or equal to T2; generated pictures T1 to T2. png indicate that subtitles in the pictures T1 to T2. png are displayed in a video in the time range from T1 to T2; a video to be subtitled is decoded; the timestamp of the decoded video frame is compared with the time range of the subtitle pictures; the subtitle pictures whose time range comprises the timestamp of the video frame and the video frame are synthesized to acquire a subtitled video frame; and the subtitled video frame is encoded to acquire a subtitled video. According to the invention, the technical scheme is simple and fast, and consumes less resource; and the requirement of quick video subtitling on a mobile terminal is met.
Description
Technical field
The present invention relates to mobile communication technology field, particularly relate to captions adding method, device and the end of a kind of video
End.
Background technology
Along with the fast development of mobile Internet, the various application on mobile terminal occur like the mushrooms after rain, wherein regard
Frequently application program is substantially the indispensability of every mobile terminal, and user utilizes video application can watch colourful regarding
Frequently data.
User needs to edit video accordingly while viewing and admiring sometimes, and some video applications provide
Some basic video editing functions, including video data carrying out U.S. face, adding the basic operation such as filter, interpolation MV.To one
For a little mobile phone users, the most really need that video is done interpolation captions and process, and traditional use ffmpeg adds
The method of captions, owing to the storehouse needing scheduling is too many, is also difficult to even on mobile terminals video to be added captions, thus
User cannot be met and add the demand of captions on mobile terminals for video.
Summary of the invention
In view of this, the present invention provides the captions adding method of a kind of video, to solve cannot realize on mobile terminals
The problem that video is added captions.
Present invention also offers a kind of captions adding set and terminal, in order to ensure realization and the application of said method.
To achieve these goals, the invention discloses the captions adding method of a kind of video, including step:
Generating captions picture, described captions picture is corresponding with time range；
Video is decoded operation, decodes the frame of video with timestamp；
The object time scope of the timestamp including frame of video is searched from the time range that described captions picture is corresponding；
Captions picture corresponding for described object time scope is synthesized with described frame of video, generates the video of band captions
Frame.
Additionally provide the captions adding set of a kind of video, including:
Captions generation module, is used for generating multiple captions picture, and described captions picture is corresponding with time range；
Video decoding module, for video is decoded operation, decodes the frame of video with timestamp；
Search module, for searching the mesh of the timestamp including frame of video from the time range that described captions picture is corresponding
Mark time range；
Synthesis module, for captions picture corresponding for described object time scope is synthesized with described frame of video, raw
Become the frame of video of band captions.
Additionally providing a kind of terminal, this terminal is provided with captions adding set recited above, in this terminal
Video carries out captions interpolation.
From technique scheme it can be seen that the invention provides captions adding method, device and the terminal of a kind of video.
Specially firstly generate some transparent captions pictures with time range name, as T1 and T2 represents two time points, T1≤
T2, the picture T1-T2.png of generation, represent in this time range of T1 to T2, will show in picture T1-T2.png in video
Captions；Then the video that will add captions is decoded；By the timestamp of frame of video decoded and captions picture
Time range compares；Time range being included, the captions picture of the timestamp of frame of video synthesizes with this frame of video again,
Obtain the frame of video of band captions；The video of band captions just can be obtained by the frame of video of band captions being carried out coding.Due to this
The technical scheme of bright proposition is succinct, quick, it is few to consume resource, such that it is able to meet interpolation word quick to video on mobile terminals
The demand of curtain.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is this
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to root
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the flow chart of steps of the captions adding method embodiment of a kind of video that the present invention provides；
Fig. 2 is the structured flowchart of the captions add-on system embodiment of a kind of video that the present invention provides.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
The present invention does not use the method that ffmpeg adds captions in video, therefore need not what use was correlated with too much
Storehouse, concrete grammar is with reference to detailed description below.Method provided by the present invention can be applied in various terminal, these
Terminal includes mobile terminal and PC, due to without using too many relevant storehouse, therefore, it is possible to reduce the resource to various terminals
Consume, it is possible to make mobile terminal or PC with the interpolation of higher velocity interpolation captions.
The flow chart of steps of the captions adding method embodiment of a kind of video that Fig. 1 provides for the present invention.
With reference to shown in Fig. 1.The captions adding method that the present invention provides may include steps of:
S101: generating captions picture, this captions picture is corresponding with time range.
Captions are generated transparent captions picture by the Android java layer utilizing the operating system of mobile terminal or PC, and
And each captions picture should a corresponding time range, this time range shows that these captions should occur in the time on video.
We can so define time range: the such as time range of a captions picture with the such information in 5200～6300,
I.e. define the captions that this captions picture carries and should occur in the 5th second of video between 200 milliseconds to the 6th second 300 milliseconds.If
There is no captions in certain time period of video, then in this catalogue, do not include the captions picture corresponding with this time period.
For convenience these time range are made a look up, can be using time range as the filename of captions picture.
S102: video is decoded operation, decodes the frame of video with timestamp.
By needing the video adding captions to be decoded operation, obtain a series of frame of video, each frame of video carries
Having corresponding timestamp, this timestamp shows the time that this frame of video occurs when normal play.Such as certain frame of video time
Between stamp be 5800, then show this video should occur in video playback the 5th second 800 milliseconds.
S103: search the object time model of the timestamp including frame of video in time range corresponding from captions picture
Enclose.
First according to time range, all captions pictures are set up an index list, in order to the most therefrom search institute
The captions picture needed.
Then, the mode tabled look-up row from index list is utilized to search the object time model of the timestamp including frame of video
Enclosing, this captions picture corresponding to object time scope is i.e. the required captions picture added of this frame of video.Such as, regard when certain
Frequently when the timestamp of frame is 5800, and index list includes 5200～6300 such object time scopes, this time
Scope includes the timestamp of this frame of video, it addition, also timestamp be 5900 frame of video be also at the scope of 5200～6300
Within, therefore timestamp be 5800 and 5900 frame of video all will use entitled 5200～6300 captions pictures.
It addition, also have a kind of situation, the time model including current video frame timestamp i.e. cannot be found from index list
Enclosing, the most just can not find the captions picture of correspondence, therefore this frame of video is without adding captions.
S104: synthesized with frame of video by captions picture corresponding for object time scope, generates the frame of video of band captions.
I.e. current video frame is processed, the captions picture found is synthesized with this current video frame, synthesis
Frame of video with captions.All frame of video finding captions picture are processed successively, forms the video of a series of band captions
Frame；
It addition, those frame of video being not matched to time range then need not carry out synthesis process, such frame of video does not has
There are captions, certainly, eventually form, be usually cross one another with the frame of video of band captions without the frame of video of captions.
Finally can also carry out the frame of video of a series of band captions obtained above recompiling (without credit video frame without
Need to recompile), thus obtain the video of band captions.
From technique scheme it can be seen that present embodiments provide the captions adding method of a kind of video, it is applied to move
Dynamic terminal.Specially firstly generate some transparent captions pictures with time range name, as T1 and T2 represents two time points,
T1≤T2, the picture T1-T2.png of generation, represent in this time range of T1 to T2, will display picture T1-in video
Captions in T2.png；Then the video that will add captions is decoded；By the timestamp of frame of video decoded and word
The time range of curtain picture compares；Time range being included, the captions picture of the timestamp of frame of video enters with this frame of video again
Row synthesis, obtains the frame of video of band captions；The video of band captions just can be obtained by the frame of video of band captions being carried out coding.By
The technical scheme proposed in the present invention is succinct, quick, it is few to consume resource, such that it is able to meet quick to video on mobile terminals
Add the demand of captions.
The captions picture of captions picture preferred png form, the captions preferred white on captions picture in the present embodiment, it is possible to
The captions of other colors it are processed as with the actual demand according to user.
With a specific embodiment, this method is described further below.
First at Android java layer, captions generating png picture, it is desirable to png picture is transparent, captions are white.
Then depositing in a catalogue by png captions picture, this catalogue preserves all of captions picture, and names word with time range
Curtain picture, such as:
The filename of captions picture: 52-63.png, represents the 5th second and shows this word between 200 milliseconds to the 6th second 300 milliseconds
Curtain picture.
Figure title: 2506-2522.png, represents the 250th second and shows this captions between 600 milliseconds to the 252nd second 200 milliseconds
Picture.
And all pictures are saved in a catalogue.If video does not has captions in certain time period, then will not generate
Corresponding captions picture.
Then the filename of all of captions picture in captions picture directory is obtained, and according to file name to all captions
Index list set up by picture.In order to quickly search captions picture, employ look-up table, definition:
typedef struct png_item{
int start；
int end；
}Png_Item；
Wherein member start and end represents the initial time and end time that a png captions picture shows respectively.I
Assume that in catalogue, the sum of picture is number, then need distribute number*sizeof (Png_Item) individual byte be used for protecting
Depositing the index of whole picture, after storage allocation, pointer pPngMem points to the initial address of this block internal memory, is all reset by internal memory.
This structure is for the captions picture of an entitled 52-63.png, and initial time start that this captions picture shows is
5 seconds 200 milliseconds, display the end time be the 6th second 300 milliseconds.
After the former video of captions to be added is decoded, obtain the frame of video of multiple band timestamp, if a frame video time
Between stamp be 5 seconds 900 milliseconds, this timestamp be converted to 100 milliseconds for unit, i.e. corresponding index list is 5900, if s1
=pPngMem [5900] .start, s2=pPngMem [5900] .end, then this frame of video needs the literary composition of the captions picture synthesized
Pieces is entitled: s1-s2.png.It is attached with the catalogue depositing picture again, we know that the path of this width captions picture.
Thus quickly search the captions picture of correspondence.The most further synthesize and i.e. can obtain regarding of band captions with encoding operation
Frequently.
It is computed, records internal memory about 10M only shared by the captions added for 10 hours, the most this at mobile terminal
The method using space for time is desirable.So greatly improve the efficiency searching picture.
It should be noted that for embodiment of the method, in order to be briefly described, therefore it is all expressed as a series of action group
Closing, but those skilled in the art should know, the embodiment of the present invention is not limited by described sequence of movement, because depending on
According to the embodiment of the present invention, some step can use other orders or carry out simultaneously.Secondly, those skilled in the art also should
Knowing, embodiment described in this description belongs to preferred embodiment, and the involved action not necessarily present invention implements
Necessary to example.
In order to ensure the enforcement of captions adding method that preceding embodiment provided, we additionally provide the word of a kind of video
Curtain add-on system, is applied to terminal.
The structured flowchart of the captions add-on system embodiment of a kind of video that Fig. 2 provides for the present invention.
With reference to shown in Fig. 2.The captions add-on system that the present invention provides includes captions generation module 10, Video decoding module
20, module 30, synthesis module 40 and video encoding module 50 are searched.
Captions generation module 10 is used for generating captions picture.
Captions are generated transparent captions picture by the Android java layer specially utilizing the operating system of terminal, and
A corresponding time range answered by each captions picture, and this time range shows that these captions should occur in the time on video.I
Can so define time range: the such as time range of a captions picture is with the such information in 5200～6300, i.e.
Define the captions that this captions picture carries and should occur in the 5th second of video between 200 milliseconds to the 6th second 300 milliseconds.If depending on
There is no captions in certain time period of frequency, then in this catalogue, do not include the captions picture corresponding with this time period.
For convenience these time range are made a look up, can be using time range as the filename of captions picture.
Video decoding module 20 is for by needing the video adding captions to be decoded operation, obtaining a series of video
Frame, with corresponding timestamp in each frame of video, this timestamp shows the time that this frame of video occurs when normal play.
The timestamp of such as certain frame of video is 5800, then show this video should occur in video playback the 5th second 800 milliseconds.
Search module 30 for searching the object time scope corresponding with the timestamp of frame of video from captions picture.Tool
Body includes that catalogue sets up unit 31 and lookup unit 32.
Catalogue sets up unit for all captions pictures being set up an index list according to time range, in order to enter one
Step therefrom searches required captions picture.
Lookup unit 32 then utilizes the mode tabled look-up row from index list to search the target of the timestamp including frame of video
Time range, this captions picture corresponding to object time scope is i.e. the required captions picture added of this frame of video.Such as,
When the timestamp of certain frame of video is 5800, and index list includes 5200～6300 such object time scopes, this
Individual time range includes the timestamp of this frame of video, it addition, also timestamp be 5900 frame of video be also at 5200～6300
Within the scope of, therefore timestamp be 5800 and 5900 frame of video all will use entitled 5200～6300 captions pictures.
It addition, also have a kind of situation, the time model including current video frame timestamp i.e. cannot be found from index list
Enclosing, the most just can not find the captions picture of correspondence, therefore this frame of video is without adding captions.
The captions picture found, for processing frame of video, is synthesized by synthesis module 40 with this frame of video,
The frame of video of anamorphic zone captions.All frame of video finding captions picture are processed successively, forms a series of band captions
Frame of video；
It addition, those frame of video being not matched to time range then need not carry out synthesis process, such frame of video does not has
There are captions, certainly, eventually form, be usually cross one another with the frame of video of band captions without the frame of video of captions.
It addition, the present invention provide captions adding set video encoding module 50 can also be set, this module for by
The frame of video stating a series of band captions obtained carries out recompiling (without credit video frame without recompiling), thus is carried
The video of captions.
From technique scheme it can be seen that present embodiments provide the captions adding method of a kind of video, it is applied to move
Dynamic terminal.Specially firstly generate some transparent captions pictures with time range name, as T1 and T2 represents two time points,
T1≤T2, the picture T1-T2.png of generation, represent in this time range of T1 to T2, will display picture T1-in video
Captions in T2.png；Then the video that will add captions is decoded；By the timestamp of frame of video decoded and word
The time range of curtain picture compares；Time range being included, the captions picture of the timestamp of frame of video enters with this frame of video again
Row synthesis, obtains the frame of video of band captions；The video of band captions just can be obtained by the frame of video of band captions being carried out coding.By
The technical scheme proposed in the present invention is succinct, quick, it is few to consume resource, such that it is able to meet quick to video on mobile terminals
Add the demand of captions.
It addition, the present embodiment additionally provides a kind of terminal, this terminal includes the mobile terminal such as mobile phone, panel computer, also wraps
Including PC etc., this terminal is provided with the captions adding set of the video that above example is provided.
For device embodiment, due to itself and embodiment of the method basic simlarity, so describe is fairly simple, relevant
Part sees the part of embodiment of the method and illustrates.
Device embodiment described above is only schematically, and the wherein said unit illustrated as separating component can
To be or to may not be physically separate, the parts shown as unit can be or may not be physics list
Unit, i.e. may be located at a place, or can also be distributed on multiple NE.Can be selected it according to the actual needs
In some or all of module realize the purpose of the present embodiment scheme.Those of ordinary skill in the art are not paying creativeness
Work in the case of, be i.e. appreciated that and implement.
Through the above description of the embodiments, those skilled in the art it can be understood that to each embodiment can
The mode adding required general hardware platform by software realizes, naturally it is also possible to pass through hardware.Based on such understanding, on
State the part that prior art contributes by technical scheme the most in other words to embody with the form of software product, should
Computer software product can store in a computer-readable storage medium, such as ROM/RAM, magnetic disc, CD etc., including some fingers
Make with so that a computer equipment (can be personal computer, server, or the network equipment etc.) performs each and implements
The method described in some part of example or embodiment.
Last it is noted that above example is only in order to illustrate technical scheme, it is not intended to limit；Although
With reference to previous embodiment, the present invention is described in detail, it will be understood by those within the art that: it still may be used
So that the technical scheme described in foregoing embodiments to be modified, or wherein portion of techniques feature is carried out equivalent；
And these amendment or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (9)
1. the captions adding method of a video, it is characterised in that include step:
Generating captions picture, described captions picture is corresponding with time range；Video is decoded operation, decodes with the time
The frame of video of stamp；
The object time scope of the timestamp including frame of video is searched from the time range that described captions picture is corresponding；
Captions picture corresponding for described object time scope is synthesized with described frame of video, generates the frame of video of band captions.
2. captions adding method as claimed in claim 1, it is characterised in that the described time model corresponding from described captions picture
Enclose middle lookup and include that the object time scope of timestamp of frame of video includes:
Index list is set up with the time range of described captions picture；
The object time scope of the timestamp including frame of video is searched from described index list.
3. captions adding method as claimed in claim 1, it is characterised in that described time range is included in described captions picture
Filename in.
4. captions adding method as claimed in claim 1, it is characterised in that the multiple captions with time range of described generation
Picture, including:
At android java layer, captions are generated described captions picture.
5. the captions adding set of a video, it is characterised in that including:
Captions generation module, is used for generating multiple captions picture, and described captions picture is corresponding with time range；
Video decoding module, for video is decoded operation, decodes the frame of video with timestamp；
Search module, during for searching the target of timestamp including frame of video from the time range that described captions picture is corresponding
Between scope；
Synthesis module, for being synthesized with described frame of video by captions picture corresponding for described object time scope, generates band
The frame of video of captions.
6. captions adding set as claimed in claim 1, it is characterised in that described lookup module includes:
Catalogue sets up unit, for setting up index list with the time range of described captions picture；
Lookup unit, for searching the object time scope of the timestamp including frame of video from described index list.
7. captions add-on system as claimed in claim 1, it is characterised in that described time range is included in described captions picture
Filename in.
8. captions adding method as claimed in claim 1, it is characterised in that described captions generation module is at android
Captions are generated described transparent captions picture by java layer.
9. a terminal, it is characterised in that include the captions adding set as described in any one of claim 5～8, for institute
State the video in terminal and carry out captions interpolation.
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| CN201510938608.3A CN105979169A (en) | 2015-12-15 | 2015-12-15 | Video subtitle adding method, device and terminal |
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Cited By (12)
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| CN106603537A (en) * | 2016-12-19 | 2017-04-26 | 广东威创视讯科技股份有限公司 | System and method for marking video signal source of mobile intelligent terminal |
| CN106658220A (en) * | 2016-11-11 | 2017-05-10 | 理光图像技术（上海）有限公司 | Subtitle creating device, demonstration module and subtitle creating demonstration system |
| CN107197389A (en) * | 2017-06-30 | 2017-09-22 | 北京金山安全软件有限公司 | Subtitle adding method and device in dynamic wallpaper and electronic equipment |
| CN107657020A (en) * | 2017-09-27 | 2018-02-02 | 上海斐讯数据通信技术有限公司 | A kind of method and system of the quick identifying processing of mass small documents |
| CN107864393A (en) * | 2017-11-17 | 2018-03-30 | 青岛海信电器股份有限公司 | The method and device that video is shown with captioning synchronization |
| CN109379631A (en) * | 2018-12-13 | 2019-02-22 | 广州艾美网络科技有限公司 | A method of passing through mobile terminal editor's video caption |
| CN109413478A (en) * | 2018-09-26 | 2019-03-01 | 北京达佳互联信息技术有限公司 | Video editing method, device, electronic equipment and storage medium |
| CN109862422A (en) * | 2019-02-28 | 2019-06-07 | 腾讯科技（深圳）有限公司 | Method for processing video frequency, device, computer readable storage medium and computer equipment |
| CN110460889A (en) * | 2019-09-16 | 2019-11-15 | 深圳市迅雷网络技术有限公司 | A kind of video throws screen method, apparatus, system and storage medium |
| CN111212320A (en) * | 2020-01-08 | 2020-05-29 | 腾讯科技（深圳）有限公司 | Resource synthesis method, device, equipment and storage medium |
| CN112087660A (en) * | 2019-06-14 | 2020-12-15 | 华为技术有限公司 | Video processing method, device and equipment |
| CN112866785A (en) * | 2018-08-17 | 2021-05-28 | 腾讯科技（深圳）有限公司 | Picture generation method, device, equipment and storage medium |
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