CN108495174B - Method and system for generating video file by H5 page effect - Google Patents
Method and system for generating video file by H5 page effect Download PDFInfo
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- 230000002194 synthesizing effect Effects 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 description 3
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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
- H04N21/431—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
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- 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
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4334—Recording operations
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- 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
- H04N21/437—Interfacing the upstream path of the transmission network, e.g. for transmitting client requests to a VOD server
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- 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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- 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
- H04N21/4402—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 reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440236—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 reformatting operations of video signals for household redistribution, storage or real-time display by media transcoding, e.g. video is transformed into a slideshow of still pictures, audio is converted into text
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- H04N21/47—End-user applications
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- H04N21/47205—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 manipulating displayed content, e.g. interacting with MPEG-4 objects, editing locally
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- 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
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- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Human Computer Interaction (AREA)
- Processing Or Creating Images (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention provides a method and a system for generating a video file by H5 page effect, wherein the method comprises the following steps: the client sends an animation data request to the server; the front end of the browser receives animation data returned by the server; the front end of the browser performs pre-rendering on the animation data to obtain video frames, and sends a pre-rendering completion signal to the client after the pre-rendering of the video frames is completed; after receiving the pre-rendering completion signal, the client acquires a video frame within a preset time for rendering, encodes the video frame, and generates a video file after encoding is completed; the method can effectively simplify the steps of synthesizing the video and has stronger expansibility.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a method and a system for generating a video file by using an H5 page effect.
Background
The existing video synthesis methods are all to split out each element of the video to be synthesized, and synthesize the video aiming at each element, so that the complexity is high, once a new animation element needs to be added, the original defined specification needs to be met, and otherwise, the expansion is not easy.
Disclosure of Invention
The invention aims to provide a method and a system for generating a video file by using an H5 page effect, aiming at the defects that a video synthesis method in the prior art is high in complexity and not easy to expand, so that the steps of synthesizing a video can be effectively simplified, and the expansibility is stronger.
A method for generating a video file by H5 page effect comprises the following steps:
the client sends an animation data request to the server;
the front end of the browser receives animation data returned by the server;
the front end of the browser performs pre-rendering on the animation data to obtain video frames, and sends a pre-rendering completion signal to the client after the pre-rendering of the video frames is completed;
and after receiving the pre-rendering completion signal, the client acquires a video frame within a preset time for rendering, encodes the video frame, and generates a video file after encoding is completed.
Further, before the client sends the animation data request to the server, the method further includes:
the client receives the animation data sent by the user and sends the animation data to the server for storage.
Further, the video frame pre-rendered by the browser front end on the animation data includes:
the browser front-end decomposes the animation effect of each element to generate an H5 page and draws each frame to the browser.
Further, acquiring and rendering a video frame within a preset time, encoding the video frame, and generating a video file after encoding, including:
step A, a client acquires a video frame within a preset time from a browser front end, and then step B is executed;
b, rendering each frame in the preset time by the front end of the browser, informing the client after rendering is finished, and then executing the step C;
step C, the client side sequentially intercepts each frame from the front end of the browser to carry out coding, and then step D is carried out;
d, after the video frame coding within the preset time is finished, judging whether the whole video is coded, if so, executing the step E; if the whole video coding is not finished, executing the step A to obtain a video frame in the next preset time;
and E, writing the video into a file for storage.
Further, after the video file is generated, the method further comprises:
and storing the video file to a local photo album.
A system for generating a video file by H5 page effect comprises a client, a server and a browser front end;
the client is used for sending an animation data request to the server;
the browser front end is used for receiving animation data returned by the server, performing video frame pre-rendering on the animation data, and sending a pre-rendering completion signal to the client after the video frame pre-rendering is completed;
and the client is also used for acquiring and rendering the video frame within the preset time after receiving the pre-rendering completion signal, encoding the video frame, and generating a video file after encoding.
Further, the client is also used for receiving animation data sent by the user and sending the animation data to the server for storage.
Further, the browser front end is also used for decomposing the animation effect of each element to generate an H5 page and drawing each frame to the browser.
Further, the client is also used for acquiring a video frame within a preset time from the front end of the browser;
the browser front end is also used for rendering each frame in the preset time and notifying a client after rendering is finished;
the client is also used for sequentially intercepting each frame from the front end of the browser for coding after rendering is finished, judging whether the coding of the whole video is finished or not after the coding of the video frames in the preset time is finished, and writing the video into a file for storage if the coding is finished; and if the whole video coding is not finished, acquiring a video frame in the next preset time from the front end of the browser.
Further, the client is also used for storing the video file to a local album.
The method and the system for generating the video file by the H5 page effect, provided by the invention, at least have the following beneficial effects:
the content of each frame is obtained through the H5 page and then is coded, under the condition that the final video content and quality are consistent with the H5 page, the steps of generating the video are greatly simplified, other animation effects need to be added, other extra workload is not needed in the part of the composite video, and the expansibility is stronger.
Drawings
Fig. 1 is a step diagram of an embodiment of a method for generating a video file by using H5 page effect according to the present invention.
Fig. 2 is a flowchart of an embodiment of a method for generating a video file by using H5 page effect according to the present invention.
Fig. 3 is a schematic structural diagram of an embodiment of a system for generating a video file by using H5 page effect according to the present invention.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
Referring to fig. 1 and 2, the present embodiment provides a method for generating a video file by using H5 page effect, including:
step S101, a client sends an animation data request to a server;
step S102, the front end of the browser receives animation data returned by the server;
step S103, the front end of the browser performs pre-rendering on the animation data to obtain video frames, and sends a pre-rendering completion signal to the client after the pre-rendering of the video frames is completed;
and step S104, after receiving the pre-rendering completion signal, the client acquires a video frame within a preset time for rendering, encodes the video frame, and generates a video file after encoding is completed.
Specifically, animation data is defined by a remote copy of a structured json file that is generated by additions or modifications within the animation editor. The file defines the type and the position of each element, the animation effect, the version information of the video, the editing time, the editing environment and the like, a user uploads and stores animation data through a client, and the client receives the animation data sent by the user and sends the animation data to a server for storage.
When a video file needs to be synthesized, the client sends an animation data request to the server, the server returns animation data to the front end of the browser after receiving the animation data request, and then video frames are pre-rendered on the animation data.
Further, the video frame pre-rendered by the browser front end on the animation data includes:
the browser front-end decomposes the animation effect of each element to generate an H5 page and draws each frame to the browser.
The browser front end obtains animation data, and then has the original states and animation effects of all elements, decomposes the animation effects of each element to generate a series of H5 pages, and each H5 page is each frame of the element.
Further, after the video frame is pre-rendered by the front end of the browser, a pre-rendering completion signal is sent to the client, the client is informed that the pre-rendering is completed, and the client renders the video frame.
Acquiring a video frame in a preset time for rendering, encoding the video frame, and generating a video file after encoding is completed, wherein the method comprises the following steps:
step A, a client acquires a video frame within a preset time from a browser front end, and then step B is executed;
b, rendering each frame in the preset time by the front end of the browser, informing the client after rendering is finished, and then executing the step C;
step C, the client side sequentially intercepts each frame from the front end of the browser to carry out coding, and then step D is carried out;
d, after the video frame coding within the preset time is finished, judging whether the whole video is coded, if so, executing the step E; if the whole video coding is not finished, executing the step A to obtain a video frame in the next preset time;
and E, writing the video into a file for storage.
The client renders the state of each element at the same time to be the picture of a certain frame of the video.
Further, after the video file is generated, the method further comprises:
and storing the video file to a local photo album.
According to the method for generating the video file by the H5 page effect, the content of each frame is obtained through the H5 page and then is coded, the step of generating the video is greatly simplified under the condition that the final video content and quality are consistent with the H5 page, other animation effects need to be added, other extra workload is not needed in the part of the composite video, and the expansibility is stronger.
Example two
Referring to fig. 3, the present embodiment provides a system for generating a video file by H5 page effect, which includes a client 201, a server 202, and a browser front-end 203;
the client 201 is used for sending an animation data request to the server 202;
the browser front end 203 is configured to receive animation data returned by the server 202, pre-render video frames for the animation data, and send a pre-rendering completion signal to the client 201 after the pre-rendering video frames are completed;
the client 201 is further configured to obtain a video frame within a preset time to render after receiving the pre-rendering completion signal, encode the video frame, and generate a video file after encoding is completed.
Further, the client 201 is also configured to receive animation data sent by the user and send the animation data to the server for storage.
Further, the browser front end 203 is also used to decompose the animation effect of each element to generate an H5 page, and draw each frame of the H5 page to the browser.
Further, the client 201 is further configured to obtain a video frame within a preset time from the front end of the browser;
the browser front end 203 is further configured to render each frame within the preset time, and notify the client after rendering is completed;
the client 201 is further configured to sequentially intercept each frame from the front end of the browser for encoding after rendering is completed, determine whether the encoding of the entire video is completed after the encoding of the video frames within the preset time is completed, and if the encoding is completed, write the video into a file for storage; and if the whole video coding is not finished, acquiring a video frame in the next preset time from the front end of the browser.
Further, the client 201 is also configured to store the video file to a local album.
For the specific working principle, please refer to the first embodiment, which is not described herein again.
The system for generating the video file by using the H5 page effect obtains the content of each frame through the H5 page and then encodes the content, greatly simplifies the step of generating the video under the condition of ensuring that the final video content and quality are consistent with the H5 page, needs to add other animation effects, does not need other extra workload at the part of the composite video, and has stronger expansibility.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (6)
1. A method for generating a video file by H5 page effect, comprising:
the client sends an animation data request to the server;
the front end of the browser receives animation data returned by the server;
the method comprises the steps that a browser front end carries out pre-rendering on video frames of animation data, wherein the browser front end decomposes animation effects of each element to generate an H5 page, and each frame is drawn to the browser; then sending a pre-rendering completion signal to the client after the pre-rendering of the video frame is completed;
after receiving the pre-rendering completion signal, the client acquires a video frame within a preset time to render, encodes the video frame, and generates a video file after encoding is completed, wherein the method comprises the following steps:
step A, a client acquires a video frame within a preset time from a browser front end, and then step B is executed;
b, rendering each frame in the preset time by the front end of the browser, informing the client after rendering is finished, and then executing the step C;
step C, the client side sequentially intercepts each frame from the front end of the browser to carry out coding, and then step D is carried out;
d, after the video frame coding within the preset time is finished, judging whether the whole video is coded, if so, executing the step E; if the whole video coding is not finished, executing the step A to obtain a video frame in the next preset time;
and E, writing the video into a file for storage.
2. The method for generating a video file according to the H5 page effect of claim 1, wherein before the client sends the animation data request to the server, the method further comprises:
the client receives the animation data sent by the user and sends the animation data to the server for storage.
3. The method for generating a video file according to the H5 page effect of claim 1, wherein after generating the video file, the method further comprises:
and storing the video file to a local photo album.
4. A system for generating a video file by H5 page effect is characterized by comprising a client, a server and a browser front end;
the client is used for sending an animation data request to the server;
the browser front end is used for receiving animation data returned by the server, performing video frame pre-rendering on the animation data, and sending a pre-rendering completion signal to the client after the video frame pre-rendering is completed; the browser front end is further used for decomposing the animation effect of each element to generate an H5 page and drawing each frame to the browser;
the client is also used for acquiring a video frame within a preset time from the front end of the browser;
the browser front end is also used for rendering each frame in the preset time and notifying a client after rendering is finished; the client is further used for obtaining video frames in a preset time for rendering after receiving the pre-rendering completion signal, encoding the video frames, and generating a video file after encoding, and specifically, the client is further used for sequentially intercepting each frame from the front end of the browser for encoding after rendering is completed, judging whether the encoding of the whole video is completed or not after the encoding of the video frames in the preset time is completed, and if the encoding is completed, writing the video into the file for storage; and if the whole video coding is not finished, acquiring a video frame in the next preset time from the front end of the browser.
5. The H5 page effect video file system according to claim 4, wherein the client is further configured to receive animation data sent by a user and send the animation data to a server for storage.
6. The system for generating a video file according to the H5 page effect of claim 4, wherein the client is further configured to store the video file in a local album.
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| CN109151520B (en) * | 2018-09-26 | 2021-09-07 | 北京大米未来科技有限公司 | Method, device, electronic equipment and medium for generating video |
| CN111193876B (en) * | 2020-01-08 | 2021-09-07 | 腾讯科技（深圳）有限公司 | Method and device for adding special effect in video |
| CN113612981A (en) * | 2021-08-25 | 2021-11-05 | 福建天晴数码有限公司 | Video-based 3D (three-dimensional) graph real-time rendering method and system |
| CN113766318A (en) * | 2021-09-09 | 2021-12-07 | 世纪龙信息网络有限责任公司 | Video generation method and device, storage medium and computer equipment |
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