CN106385635B - GIF animation real-time control method and player - Google Patents
GIF animation real-time control method and player Download PDFInfo
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- CN106385635B CN106385635B CN201610827040.2A CN201610827040A CN106385635B CN 106385635 B CN106385635 B CN 106385635B CN 201610827040 A CN201610827040 A CN 201610827040A CN 106385635 B CN106385635 B CN 106385635B
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- 238000009877 rendering Methods 0.000 claims description 13
- 238000010586 diagram Methods 0.000 description 4
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- 230000000694 effects Effects 0.000 description 2
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Classifications
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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
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47217—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for controlling playback functions for recorded or on-demand content, e.g. using progress bars, mode or play-point indicators or bookmarks
-
- 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
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/44012—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving rendering scenes according to scene graphs, e.g. MPEG-4 scene graphs
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Human Computer Interaction (AREA)
- Processing Or Creating Images (AREA)
Abstract
The present invention provides a kind of GIF animation real-time control method and player, method includes: reading and parses GIF animation, obtains picture frame；The delay time of described image frame is set；Picture frame is successively rendered in sequence, and each picture frame residence time is the delay time of described image frame；Progress bar is set and plays vernier；It is in sequence that picture frame is corresponding with progress bar；The broadcasting vernier and the progress bar are bound；The mobile vernier that plays is to the playback progress progress real-time control of the GIF animation.By reading and parsing GIF animation, the delay time that picture frame resets each frame as needed is obtained, picture frame is successively rendered, and stops delay time to show picture frame, realizes flexibly control GIF animation play speed.And by setting progress bar and vernier is played, real-time control is carried out to the playback progress of GIF animation, user experience is greatly improved.
Description
Technical field
The present invention relates to animation play field more particularly to a kind of GIF animation real-time control methods and player.
Background technique
The browser of mainstream all clearly supports GIF format at present, therefore GIF is most widely used image coding on Web
Format, in-line image and external linkage image can use this format.GIF coding techniques can make on many platforms
With the GIF image created in Apple Computers system can also be loaded, decode and be checked on the PC based on Windows.
GIF uses a kind of special compress technique (LZW), the size of image file can be substantially reduced, to be able to
It is quickly transmitted on network.And GIF compression is " lossless " compression, in image original data will not all change or
It loses, so decompression contracts, decoded image and original image are just the same.GIF format-pattern can be in one file
Multiframe figure is stored, these figures are read and rendered frame by frame, it can realize simple frame-by-frame cartoons.In GIF, Mei Getu
All there is special control section as between, can be used to be arranged time that browser shows entire sequence (circulation) from the beginning to the end
It counts, the time paused between every two image, and whether is erased from background before browser shows latter one image
Image space etc..
Existing GIF animation be in webpage by browser by picture load and render, browser to GIF picture carry out by
Frame is drawn, and according to the time and played in order set in its former gif file can only can not show animation play progress, can not
Playback progress is controlled, greatly affected user experience.
It is real that the Chinese patent of Publication No. CN 104952097A discloses a kind of GIF animation based on multiframe decomposition technique
Shi Fangfa, comprising: by the way that each frame in GIF animation is separated, and by each frame separated according to its broadcasting when
Between be continuously put into different queues, the corresponding time timer of each queue utilizes time timer real-time control every team
The broadcasting speed of each frame in column leads into the broadcasting of next frame using the movement for playing vernier, real-time control GIF animation
Playback progress.However the program controls animation play speed in such a way that each frame is put into different queue, time control in fact
The effect is unsatisfactory for system.
Summary of the invention
The technical problems to be solved by the present invention are: GIF animation play can flexibly be controlled under browser by providing one kind
The real-time control method and player of progress.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows:
A kind of GIF animation real-time control method, comprising:
GIF animation is read and parsed, picture frame is obtained；
The delay time of described image frame is set；
Picture frame is successively rendered in sequence, and each picture frame residence time is the delay time of described image frame；
Progress bar is set and plays vernier；It is in sequence that picture frame is corresponding with progress bar；By the broadcasting vernier and institute
State progress bar binding；The mobile vernier that plays is to the playback progress progress real-time control of the GIF animation.
Another technical solution provided by the invention are as follows:
A kind of GIF animation real-time control player characterized by comprising
Data cell obtains picture frame for reading and parsing GIF animation；
Setting unit, for the delay time of described image frame to be arranged；
Rendering unit, for successively rendering picture frame in sequence, each picture frame residence time is described image frame
Delay time；
Control unit, for progress bar to be arranged and plays vernier；It is in sequence that picture frame is corresponding with progress bar；It will be described
It plays vernier and the progress bar is bound；The mobile vernier that plays is to the playback progress progress real-time control of the GIF animation.
The beneficial effects of the present invention are: by reading and parse GIF animation, obtain picture frame (including image data and
Delay time) sequence, the delay time of each frame is reseted as needed, successively renders picture frame, present image by positive sequence or inverted order
Frame stops delay time set by the picture frame to show the picture frame, realizes flexibly control GIF animation play speed.And lead to
It crosses setting progress bar and plays vernier, real-time control is carried out to the playback progress of GIF animation, solving the prior art can not be clear
It lookes in device the problem of playback progress of GIF animation is controlled and shown, user experience is greatly improved.Meanwhile WEB application collection
At the player, need to be only passed to by disclosed data resource interface the URL of GIF animation, the width (pixel) of broadcast window and
Highly parameters such as (pixel), so that it may realize the real-time control and display and the adjustment of broadcasting speed of playback progress.
Detailed description of the invention
Fig. 1 is the flow chart of the GIF animation real-time control method of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the GIF animation real-time control player of the embodiment of the present invention；
Fig. 3 is the schematic diagram of the GIF image frame sequence of the embodiment of the present invention one；
Fig. 4 is the GIF animation frame sequence, progress bar and the schematic diagram for playing vernier of the embodiment of the present invention one.
Label declaration:
1, data cell；2, setting unit；3, rendering unit；4, control unit；41, division unit；42, corresponding unit.
Specific embodiment
To explain the technical content, the achieved purpose and the effect of the present invention in detail, below in conjunction with embodiment and cooperate attached
Figure is explained.
The most critical design of the present invention is: resetting prolonging for all picture frames after parsing GIF animation obtains picture frame
When the time, according to the delay time show picture frame, and be arranged progress bar and play vernier control GIF animation broadcasting into
Degree.
Fig. 1 is please referred to, the present invention provides a kind of GIF animation real-time control method, comprising:
GIF animation is read and parsed, picture frame is obtained；
The delay time of described image frame is set；
Picture frame is successively rendered in sequence, and each picture frame residence time is the delay time of described image frame；
Progress bar is set and plays vernier；It is in sequence that picture frame is corresponding with progress bar；By the broadcasting vernier and institute
State progress bar binding；The mobile vernier that plays is to the playback progress progress real-time control of the GIF animation.
Further, it specifically includes in sequence by picture frame is corresponding with progress bar:
Quantity according to picture frame divides equally the progress bar；By each picture frame successively with divide equally after the progress bar
Each section of one-to-one correspondence.
As can be seen from the above description, can indicate the currently playing progress of GIF animation by progress bar, trip is played by mobile
The position of mark on a progress bar can control the broadcasting of GIF animation positive sequence, flashback plays, advances, retreats, plays, suspends etc..
Further, carrying out real-time control to the playback progress of the GIF animation includes:
It is mobile to play vernier, the broadcasting vernier after movement is successively sequentially rendered in progress bar from the picture frame of current presentation
On the corresponding picture frame in position.
As can be seen from the above description, by that will move broadcasting vernier, control is from current image frame positive sequence or Reverse Play to broadcasting
Put correspondence image frame after vernier moves.Such as currently playing is the 5th frame image, mobile to play vernier to the 8th frame image in progress
Corresponding position on item is then played from the 5th frame image positive sequence to the 8th frame image.Currently playing is the 5th frame image, and movement is broadcast
Vernier is put to the 3rd frame image, then from the 5th frame image Reverse Play to the 3rd frame image.
Further, to the playback progress of the GIF animation carry out real-time control include play, tentative, preceding forward one frame and
At least one of backward one frame afterwards.
It sees as can be seen from the above description, above-mentioned real-time control is the most common real-time control of current video playing, can also be set
Set other control options.
Further, the real-time control of preceding forward one frame includes:
It is mobile to play vernier, the picture frame of current presentation is jumped as next image frame.
The real-time control of backward one frame includes: afterwards
It is mobile to play vernier, the picture frame of current presentation is jumped as a upper picture frame.
Referring to figure 2., another technical solution of the invention are as follows:
A kind of GIF animation real-time control player characterized by comprising
Data cell 1 obtains picture frame for reading and parsing GIF animation；
Setting unit 2, for the delay time of described image frame to be arranged；
Rendering unit 3, for successively rendering picture frame in sequence, each picture frame residence time is described image frame
Delay time；
Control unit 4, for progress bar to be arranged and plays vernier；It is in sequence that picture frame is corresponding with progress bar；By institute
It states and plays vernier and progress bar binding；The mobile broadcasting vernier controls the playback progress of the GIF animation in real time
System.
Further, described control unit 4 further include:
Division unit 41 divides equally the progress bar for the quantity according to picture frame；
Corresponding unit 42, for by each picture frame successively with divide equally after each section of progress bar one-to-one correspondence.
Further, after described control unit 4 is also used to successively sequentially render to movement from the picture frame of current presentation
Play the corresponding picture frame in position of vernier on a progress bar.
Further, control unit 4 is also used to be arranged broadcast button, pause button, preceding forward one frame button and rear backward one frame
Button, and the broadcast button, pause button, preceding forward one frame button and rear backward one frame button and progress bar are bound, it is right respectively
The GIF image is played out, is fixed tentatively, the real-time control of preceding forward one frame and rear backward one frame.
Further, the preceding forward one frame button plays vernier for mobile, and the picture frame of current presentation is jumped under
One picture frame；Backward one frame button plays vernier for mobile after described, and the picture frame of current presentation is jumped as a upper picture frame.
Below with reference to Fig. 1 to Fig. 4, above-mentioned technical proposal is described in detail:
According to GIF image file format specification, GIF image file is to store image information in the form of block, therein
Block is also known as regional structure.All blocks can be divided into three categories again according to the feature of wherein block, be control block respectively
(Control Block), image descriptor (Graphic Rendering Block) and specific use block (Special
Purpose Block)。
Control block contains the processing of control data flow and the setting of hardware parameter, includes mainly File header information, patrols
Collect screen description block, image control extent block and end of file block.
Image descriptor contains image is described on the display device needed for information, member include image descriptor,
Global palette, local palette, image compression data and picture specification extent block.One frame image corresponds to an iamge description
Block, in order to distinguish two images, GIF uses the picture delimiter (Image Separator) of a byte to identify image
The beginning of description block takes fixed value 0x2C.
Specific use block contains the information with image real time transfer without direct relation, and member includes that annotation of images expands
Block and application program extent block.
In above-mentioned technical proposal, read and parse GIF image data, i.e., above-mentioned GIF animation when, by above-mentioned GIF image text
Part structure is parsed, and distinguishes to obtain GIF image frame sequence by picture delimiter, each picture frame include image data and
Delay time, as shown in Figure 3.
In technical solution of the present invention, the delay time of each frame is reseted as needed, successively renders figure by positive sequence or inverted order
As frame, stops and work as delay time set by frame to show image, to realize flexibly control GIF animation play speed.For example, thinking
The broadcasting speed for accelerating certain segment in GIF animation, the delay time of each frame of the segment can be shortened；Want to slow down GIF animation
The broadcasting speed of segment can extend the delay time of each frame of the segment.Here segment can be any position, arbitrarily long
Degree, therefore there is very high flexibility.
Embodiment one
A kind of GIF animation real-time control method based on browser, step include:
S1, reading and the image data for parsing GIF animation obtain all picture frames (including image data and delay time)
Sequence；
S2, the delay time for reseting each frame as needed, to adjust GIF animation play speed；
S3, picture frame is successively rendered by positive sequence or inverted order, each picture frame residence time is in step S2 to the image
The delay time that frame is reseted, to show the picture frame；
S4, setting progress bar and broadcasting vernier, divide equally progress bar according to the frame number N of GIF image, successively by each picture frame
With divide equally after each section of progress bar one-to-one correspondence, and by the broadcastings vernier and progress bar binding.By positive sequence or inverted order
When continuously rendering and show n-th frame (1≤n≤N) image, broadcasting vernier corresponds to positive sequence or inverted order and is moved to progress bar n-th in real time
Equal part end.Positive sequence or the mobile real-time control for playing vernier, realizing to GIF animation play progress of inverted order.
Wherein, the real-time control to GIF animation play progress include positive sequence broadcasting, Reverse Play, broadcasting, pause,
One or more of preceding forward one frame, rear backward one frame real-time control.
It is illustrated in figure 4 GIF animation frame sequence, progress bar and the schematic diagram for playing vernier.The frame number of GIF image is N, then
Progress bar is divided into N equal part.Assuming that playing vernier is currently at the 3rd frame position of progress bar, when playing vernier from current location
It is moved to progress bar N+1 frame position by positive sequence, implements continuously the rendering and showing as positive sequence to nth frame image of the 3rd frame of GIF
It plays；The 1st frame position of progress bar is moved in reverse order from current location when playing vernier, implements GIF the 3rd frame to the 1st frame image
Continuously render and show as Reverse Play.
The real-time control method of the pause are as follows: play vernier and stop moving in current location.As shown in Figure 3, it is assumed that broadcast
It puts vernier and is currently at the 3rd frame position of progress bar, render at this time and show the 3rd frame image.Stop mobile broadcasting vernier, broadcasting is
Pause at the position of the 3rd frame.
The real-time control method of the preceding forward one frame are as follows: play vernier from the position n-th frame (1≤n≤N) and be moved to the in real time
N+1 frame.As shown in Figure 3, it is assumed that play vernier and be currently at the 2nd frame position of progress bar, can will play vernier and be moved to progress
Article the 3rd frame position, renders and shows the 3rd frame image, realizes that the single frames of former frame plays.
The real-time control method of backward one frame after described are as follows: play vernier and be moved in real time from the position n-th frame (2≤n≤N+1)
(n-1)th frame.As shown in Figure 3, it is assumed that play vernier be currently at the 3rd frame position of progress bar, can will play vernier be moved into
Article the 2nd frame position is spent, renders and show the 2nd frame image, realizes that the single frames of a later frame plays.
Embodiment two:
Referring to figure 2., a kind of GIF animation real-time control player, comprising:
Data cell 1 for obtaining the image data for the GIF animation to be played, and parses the image data and is owned
Picture frame (including image data and delay time) sequence；
Setting unit 2, for reseting the delay time of each picture frame as needed, to adjust GIF animation play speed；
Rendering unit 3, for successively rendering picture frame by positive sequence or inverted order, the residence time of each picture frame is the image
The delay time of frame, to show the picture frame；
Control unit 4 is completed dynamic to GIF for broadcasting, pause, preceding forward one frame, rear backward one frame real-time control button to be arranged
Draw the real-time control played；Progress bar is set simultaneously and plays vernier, and the broadcasting vernier and the progress bar are bound, into
Degree item is used to indicate currently playing progress；Described control unit 4 further includes division unit 41, for the frame number N according to GIF image
Respectively progress bar and corresponding unit 42, for by each picture frame successively with divide equally after each section of progress bar one-to-one correspondence.
When continuously rendering by positive sequence or inverted order and showing n-th frame (1≤n≤N) image, broadcasting vernier corresponds to positive sequence or inverted order moves in real time
To the n-th equal part of progress bar end.Positive sequence or the mobile real-time control for playing vernier, realizing to GIF animation play progress of inverted order.
The real-time control method of the broadcast button are as follows: click play button, broadcast button become pause button, broadcast simultaneously
Vernier is put to move on a progress bar with playback progress synchronization.
The real-time control method of the pause button are as follows: click pause button, pause button becomes broadcast button, broadcasts simultaneously
It puts vernier and stops at progress bar current location.
The real-time control method of the preceding forward one frame button are as follows: play vernier on a progress bar from current n-th frame (1≤n≤
N) position is moved to the (n+1)th frame position in real time.
The real-time control method of backward one frame after described are as follows: play vernier on a progress bar from current n-th frame (2≤n≤N+1)
Position is moved to the (n-1)th frame in real time.
Wherein, be arranged currently playing frame be GIF animation first frame when, disable a later frame button；Currently playing frame is dynamic for GIF
When drawing last frame, former frame button is disabled；At the end of GIF animation last frame plays, automatically begin to play first frame.
In conclusion GIF animation real-time control method provided by the invention and player, it is right in a browser to solve
The control and display and the adjustment of broadcasting speed of GIF animation play progress, are greatly improved user experience.In addition, of the invention
Player conceals GIF animation attributes by encapsulation and realizes details, only external disclosure data resource interface, for answering based on WEB
It is provided convenience with integrated.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalents made by bright specification and accompanying drawing content are applied directly or indirectly in relevant technical field, similarly include
In scope of patent protection of the invention.
Claims (8)
1. a kind of GIF animation real-time control method characterized by comprising
GIF animation is read and parsed, picture frame is obtained；
The delay time of described image frame is set；
Picture frame is successively rendered in sequence, and each picture frame residence time is the delay time of described image frame；
Progress bar is set and plays vernier；It is in sequence that picture frame is corresponding with progress bar；By the broadcasting vernier and it is described into
Spend item binding；The mobile vernier that plays is to the playback progress progress real-time control of the GIF animation；
It specifically includes in sequence by picture frame is corresponding with progress bar:
Quantity according to picture frame divides equally the progress bar；By each picture frame successively with divide equally after each section of the progress bar
It corresponds.
2. GIF animation real-time control method according to claim 1, which is characterized in that the broadcasting of the GIF animation into
Degree carries out real-time control
It is mobile to play vernier, from the picture frame of current presentation successively sequentially render to it is mobile after broadcasting vernier on a progress bar
The corresponding picture frame in position.
3. GIF animation real-time control method according to claim 1, which is characterized in that the broadcasting of the GIF animation into
It includes at least one of broadcasting, tentative, preceding forward one frame and rear backward one frame that degree, which carries out real-time control,.
4. GIF animation real-time control method according to claim 3, which is characterized in that the real-time control packet of preceding forward one frame
It includes:
It is mobile to play vernier, the picture frame of current presentation is jumped as next image frame；
The real-time control of backward one frame includes: afterwards
It is mobile to play vernier, the picture frame of current presentation is jumped as a upper picture frame.
5. a kind of GIF animation real-time control player characterized by comprising
Data cell obtains picture frame for reading and parsing GIF animation；
Setting unit, for the delay time of described image frame to be arranged；
Rendering unit, for successively rendering picture frame in sequence, each picture frame residence time is prolonging for described image frame
When the time；
Control unit, for progress bar to be arranged and plays vernier；It is in sequence that picture frame is corresponding with progress bar；By the broadcasting
Vernier and the progress bar are bound；The mobile vernier that plays is to the playback progress progress real-time control of the GIF animation；
Described control unit further include:
Division unit divides equally the progress bar for the quantity according to picture frame；
Corresponding unit, for by each picture frame successively with divide equally after each section of progress bar one-to-one correspondence.
6. GIF animation real-time control player according to claim 5, which is characterized in that described control unit is also used to
It is mobile to play vernier, the position of broadcasting vernier on a progress bar after movement is successively sequentially rendered to from the picture frame of current presentation
Corresponding picture frame.
7. GIF animation real-time control player according to claim 5, which is characterized in that control unit is also used to be arranged
Broadcast button, pause button, preceding forward one frame button and rear backward one frame button, and by the broadcast button, pause button, advance one
Frame button and rear backward one frame button and progress bar are bound, and are played out, are fixed tentatively to the GIF animation respectively, moving forward and backward
Real-time control.
8. GIF animation real-time control player according to claim 7, which is characterized in that the preceding forward one frame button is used
Vernier is played in mobile, the picture frame of current presentation is jumped as next image frame；Backward one frame button is broadcast for movement after described
Vernier is put, the picture frame of current presentation is jumped as a upper picture frame.
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| CN110019866B (en) * | 2017-09-30 | 2023-03-10 | 腾讯科技（深圳）有限公司 | Dynamic picture playing method, device and storage medium |
| CN108228052B (en) * | 2017-12-29 | 2022-02-25 | 腾讯科技（深圳）有限公司 | Method and device for triggering operation of interface component, storage medium and terminal |
| CN108289237B (en) * | 2018-02-12 | 2020-08-25 | 腾讯科技（深圳）有限公司 | Method, device and terminal for playing dynamic picture and computer readable storage medium |
| CN108712675B (en) * | 2018-05-29 | 2019-11-26 | 广州梦映动漫网络科技有限公司 | The playback controls method and electronic equipment of animated element in a kind of dynamic caricature |
| CN109739607B (en) * | 2018-12-29 | 2021-11-09 | 深圳乐信软件技术有限公司 | Dynamic image loading method, device, equipment and storage medium |
| CN112001988A (en) * | 2019-05-27 | 2020-11-27 | 珠海金山办公软件有限公司 | Animation effect generation method and device |
| CN110727825A (en) * | 2019-09-20 | 2020-01-24 | 彩讯科技股份有限公司 | Animation playing control method, device, server and storage medium |
| CN111443914B (en) * | 2020-03-30 | 2023-07-14 | 北京字节跳动网络技术有限公司 | Animation display method and device |
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