CN114610212A - Front-end visual video content editing method, device, equipment and storage medium - Google Patents
Front-end visual video content editing method, device, equipment and storage medium Download PDFInfo
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- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims description 15
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
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- G06F3/04845—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range for image manipulation, e.g. dragging, rotation, expansion or change of colour
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
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Abstract
The invention discloses a method, a device, equipment and a storage medium for editing front-end visual video content, which relate to the technical field of computers, and the method comprises the following steps: the front end submits an html text of the content edited by the user, and stores a JavaScript file and a css file which are associated with the html text into a cloud space; the method comprises the steps that a JavaScript file and a css file which are associated with an html text are obtained by a rear end from a cloud space, and headless browser rendering is conducted on the html text; the rear end carries out picture format conversion processing on the rendered html text according to the JavaScript file to obtain a png format picture; and the back end calls an image processing program to compress the png format picture and the original video into a whole. The invention realizes simple operation of users and one-time editing of video contents (including characters, logo, watermark and the like) which can be reused in batches by matching front and back end programs.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a front-end visual video content editing method, device, equipment and storage medium.
Background
With the development of short video applications, short video content is made to meet the common needs of people. The common short video content production mode is that manual work is matched with a video editing tool to produce, but the problems that the demand of content materials is large or the use threshold of the editing tool is high still exist for general users.
Disclosure of Invention
The invention provides a front-end visual video content editing method, a front-end visual video content editing device, a front-end visual video content editing equipment and a storage medium, which solve the problems.
The invention provides a front-end visual video content editing method, which comprises the following steps:
step m 1: the front end submits html text of the content edited by the user, and a JavaScript file and a css file which are associated with the html text are stored in a cloud space;
step s 1: after receiving the html text, the rear end acquires a JavaScript file and a css file which are associated with the html text from a cloud space, and performs headless browser rendering on the html text;
step s 2: the rear end carries out picture format conversion processing on the rendered html text according to the JavaScript file to obtain a png format picture;
step s3: and the back end calls an image processing program to compress the png format picture and the original video into a whole.
Optionally, the headless browser rendering of the html text specifically includes: performing headless browser rendering on html text by using a selenium tool;
the step s2 is specifically as follows: and the rear end calls an html2canvas method in the JavaScript file to convert the rendered html text into a picture format to obtain a png format picture.
Optionally, the headless browser rendering on the html text specifically includes: in a Python program, performing headless browser rendering on html text by using a selenium tool; then also comprises the following steps: detecting whether the rendered html text is converted into a png format picture; if yes, returning a result to the front end; otherwise, continuously detecting whether the rendered html text is converted into the png format picture.
Optionally, the detecting whether the rendered html text is converted into a png format picture specifically includes: detecting whether the label is written, if so, detecting that the rendered html text is converted into a png format picture; otherwise, detecting that the rendered html text is not converted into the png format picture;
after obtaining the png format picture in step s2, the method further includes: and writing the label.
The invention also provides a front-end visual video content editing device, which comprises: the device comprises a submission module, a storage module, a receiving module, an acquisition module, a headless rendering module, a format conversion module and an image processing module;
the submission module is used for submitting the html text of the edited content of the user to the back end;
the storage module is used for storing the JavaScript file and the css file which are associated with the html text into a cloud space;
the receiving module is used for receiving the html text from the front end;
an obtaining module for obtaining a JavaScript file and a css file associated with the html text from the cloud space,
the headless rendering module is used for performing headless browser rendering on the html text;
the format conversion module is used for converting the rendered html text into a picture format according to the JavaScript file to obtain a png format picture;
and the image processing module is used for calling an image processing program to compress the png format picture and the original video into a whole.
Optionally, the headless rendering module is specifically configured to perform headless browser rendering on the html text by using a selenium tool;
the format conversion module is specifically used for calling an html2canvas method in the JavaScript file to convert the rendered html text into a picture format to obtain a png format picture.
Optionally, the method further comprises: a detection module;
the headless rendering module is specifically used for performing headless browser rendering on html text by using a selenium tool in a Python program;
the detection module is used for detecting whether the rendered html text is converted into a png format picture; if yes, sending a return request result to the front end; otherwise, continuously detecting whether the rendered html text is converted into the png format picture.
Optionally, the detection module is specifically configured to determine whether the tag has been written, and if so, detect that the rendered html text has been converted into a png format picture; otherwise, detecting that the rendered html text is not converted into the png format picture;
and the format conversion module is also used for writing the png format picture into a label after obtaining the png format picture.
The present invention provides an apparatus comprising: a processor;
a memory for storing executable instructions;
the processor is used for reading the executable instruction from the memory and executing the executable instruction so as to realize the front-end visual video content editing method.
The present invention provides a computer-readable storage medium storing a computer program which, when executed by a processor, causes the processor to implement the above-described front-end visual video content editing method.
The invention has the beneficial effects that: the front-end visual video content editing method, device, equipment and storage medium provided by the invention realize the editing scheme of video content (non-video content such as characters, logo, watermark and the like) which can be reused in batches by simple operation of a user and one-time editing through a front-end program and back-end program matching mode.
Drawings
Fig. 1 is a flowchart of a front-end visual video content editing method according to embodiment 1 of the present invention.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment provides a method for editing video content with front-end visualization, as shown in fig. 1, including:
step m 1: the front end submits html text of the content edited by the user, and a JavaScript file and a css file which are associated with the html text are stored in a cloud space;
step s 1: after receiving the html text, the rear end acquires a JavaScript file and a css file which are associated with the html text from a cloud space, and performs headless browser rendering on the html text;
step s 2: the rear end carries out picture format conversion processing on the rendered html text according to the JavaScript file to obtain a png format picture;
step s3: and the back end calls an image processing program to compress the png format picture and the original video into a whole.
Preferably, the headless browser rendering of the html text specifically includes: performing headless browser rendering on html text by using a selenium tool;
step s2 specifically includes: and the rear end calls an html2canvas method in the JavaScript file to convert the rendered html text into a picture format to obtain a png format picture.
Preferably, headless browser rendering is performed on the html text, specifically: in a Python program, performing headless browser rendering on html text by using a selenium tool; then also comprises the following steps: detecting whether the rendered html text is converted into a png format picture; if yes, returning a result to the front end; otherwise, continuously detecting whether the rendered html text is converted into the png format picture.
Preferably, detecting whether the rendered html text is converted into a png format picture, specifically: detecting whether the label is written, if so, detecting that the rendered html text is converted into a png format picture; otherwise, detecting that the rendered html text is not converted into the png format picture;
after obtaining the png format picture in step s2, the method further includes: and writing the label.
The embodiment further provides a front-end visual video content editing device, including:
the device comprises a submission module, a storage module, a receiving module, an acquisition module, a headless rendering module, a format conversion module and an image processing module;
the submission module is used for submitting the html text of the edited content of the user to the back end;
the storage module is used for storing the JavaScript file and the css file which are associated with the html text into a cloud space;
the receiving module is used for receiving the html text from the front end;
the acquisition module is used for acquiring a JavaScript file and a css file which are associated with the html text from the cloud space;
the headless rendering module is used for performing headless browser rendering on the html text;
the format conversion module is used for converting the rendered html text into a picture format according to the JavaScript file to obtain a png format picture;
and the image processing module is used for calling an image processing program to compress the png format picture and the original video into a whole.
Preferably, the headless rendering module is specifically configured to perform headless browser rendering on html text using a selenium tool;
and the format conversion module is specifically used for calling an html2canvas method in the JavaScript file to convert the rendered html text into a picture format to obtain a png format picture.
Preferably, a front-end visual video content editing apparatus may further include: a detection module;
the headless rendering module is specifically used for performing headless browser rendering on the html text by using a selenium tool in a Python program;
the detection module is used for detecting whether the rendered html text is converted into a png format picture; if yes, sending a return request result to the front end; otherwise, continuously detecting whether the rendered html text is converted into the png format picture.
Preferably, the detection module is specifically configured to determine whether the tag has been written, and if so, detect that the rendered html text has been converted into a png format picture; otherwise, detecting that the rendered html text is not converted into the png format picture;
and the format conversion module is also used for writing the png format picture into the label after obtaining the png format picture.
The present embodiment also provides an apparatus, including: a memory for storing executable instructions;
the processor is used for reading the executable instructions from the memory and executing the executable instructions so as to realize the front-end visual video content editing method.
The present embodiment also provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the computer program causes the processor to implement the front-end visual video content editing method.
The method, the apparatus, the device and the storage medium for editing the front-end visual video content provided by this embodiment implement a simple operation by a user and edit a video content (referring to non-video content such as text, logo and watermark) that can be reused in batches at one time by means of a front-end and back-end program cooperation.
Example 2
The embodiment provides a front-end visual video content editing method, which includes:
the front-end content real-time interactive editing and rendering is carried out through the h5 technology, a user submits an html text through an html code after confirming that the self-input content and the style are correct, and the dependent js (JavaScript) and css (cascading style forms) are synchronously stored in the cloud space, so that the problems of overlarge files and low efficiency caused by directly transmitting js and css files can be solved.
And the rear end receives the html text in the format of the html code at the front end, pulls js and css files stored in the cloud space, and renders the files by using a selenium tool headless browser, so that the content style written by the front end can be restored by 100% without depending on a display card and any interface.
The rendered html content needs to be converted into the png format picture by using an html2canvas method, then the png format picture is submitted to the downstream of a link, and the png format picture and the video are pressed together by using image processing programs such as ffmpeg and the like, so that the effect of editing the video content in real time at the front end is achieved.
Specifically, the method comprises the following steps:
first, the invention uses html code to carry out front-end and back-end communication, and has the advantages of small data volume and high reduction degree. And one request can accept a plurality of generation requests, thereby greatly reducing the service processing time. Secondly, a backend crawler technology framework (selenium tool) is used for rendering the headless browser, so that the limitation that a page must be rendered in the environment with a display card and the browser is solved, and the rendering process can be completely submitted to backend simulation.
And finally, performing image conversion processing on the html content which is rendered by simulation by using an html2canvas method. The format transferred out supports the real png format picture without background, and can meet the requirement of video synthesis. The difficulty in this embodiment is: in the embodiment, when a python framework selenium tool is used for simulating and rendering html codes, html conversion to png format pictures is carried out in a js link and uploaded to a cloud space. Essentially, the processes are 2 independent processes, and the python process does not know the progress of converting the rendered html content into the png format picture in the js link and does not know when the generated png format picture is uploaded completely. This problem can result in the python host process not knowing when the task processing is complete, which has no way to give the processing results to the requesting peer in a reasonable time. If the python main process sleep fixed time is forced to be used as the timeout time, the request time length is wasted when the real processing time is less than the timeout time; when the real processing time is longer than the timeout time, the response result is abnormal, and the task fails.
Aiming at the problem, the invention synchronously uploads the picture by using an async method in a js link and manually writes a transDone self-defined label when the picture is finished. And forces a wait at the host process using the WebDriverWait method until a transDone tag is retrieved. By utilizing the design idea, the problem of mutual communication of two opposite language processes is successfully solved, and the effect of processing real-time response in real time is achieved.
The front-end visual video content editing method provided by the embodiment realizes a video content (non-video content such as characters, logo, watermark and the like) editing scheme which can be reused in batches by a user through simple operation and one-time editing in a front-end and back-end program matching mode.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A front-end visual video content editing method is characterized by comprising the following steps:
step m 1: the front end submits html text of the content edited by the user, and a JavaScript file and a css file which are associated with the html text are stored in a cloud space;
step s 1: after receiving the html text, the rear end acquires a JavaScript file and a css file which are associated with the html text from a cloud space, and performs headless browser rendering on the html text;
step s 2: the rear end carries out picture format conversion processing on the rendered html text according to the JavaScript file to obtain a png format picture;
and step s3, the back end calls an image processing program to compress the png format picture and the original video into a whole.
2. The front-end visual video content editing method according to claim 1,
the headless browser rendering of the html text specifically comprises the following steps: performing headless browser rendering on html text by using a selenium tool;
the step s2 is specifically as follows: and the rear end calls an html2canvas method in the JavaScript file to convert the rendered html text into a picture format to obtain a png format picture.
3. The front-end visual video content editing method according to claim 2,
the headless browser rendering of the html text specifically comprises the following steps: in a Python program, performing headless browser rendering on html text by using a selenium tool; then also comprises the following steps: detecting whether the rendered html text is converted into a png format picture; if yes, returning a result to the front end; otherwise, continuously detecting whether the rendered html text is converted into the png format picture.
4. The front-end visual video content editing method according to claim 3,
the detecting whether the rendered html text is converted into the png format picture specifically comprises the following steps: detecting whether the label is written, if so, detecting that the rendered html text is converted into a png format picture; otherwise, detecting that the rendered html text is not converted into the png format picture;
after obtaining the png format picture in step s2, the method further includes: and writing the label.
5. A front-end visual video content editing apparatus, comprising:
the device comprises a submitting module, a storage module, a receiving module, an obtaining module, a headless rendering module, a format conversion module and an image processing module;
the submission module is used for submitting the html text of the edited content of the user to the back end;
the storage module is used for storing the JavaScript file and the css file which are associated with the html text into a cloud space;
the receiving module is used for receiving the html text from the front end;
the acquisition module is used for acquiring a JavaScript file and a css file which are associated with the html text from the cloud space;
the headless rendering module is used for performing headless browser rendering on the html text;
the format conversion module is used for converting the rendered html text into a picture format according to the JavaScript file to obtain a png format picture;
and the image processing module is used for calling an image processing program to compress the png format picture and the original video into a whole.
6. The front-end visual video content editing apparatus according to claim 5, wherein the headless rendering module is specifically configured to perform headless browser rendering on html text using a selenium tool;
the format conversion module is specifically used for calling an html2canvas method in the JavaScript file to convert the rendered html text into a picture format to obtain a png format picture.
7. The front-end visual video content editing apparatus according to claim 6, further comprising: a detection module;
the headless rendering module is specifically used for performing headless browser rendering on html text by using a selenium tool in a Python program;
the detection module is used for detecting whether the rendered html text is converted into a png format picture; if yes, sending a return request result to the front end; otherwise, continuously detecting whether the rendered html text is converted into the png format picture.
8. The front-end visual video content editing apparatus according to claim 7, wherein the detection module is specifically configured to determine whether a tag has been written, and if so, detect that the rendered html text has been converted into a png format picture; otherwise, detecting that the rendered html text is not converted into the png format picture;
and the format conversion module is also used for writing the png format picture into a label after obtaining the png format picture.
9. An apparatus, comprising: a processor;
a memory for storing executable instructions;
the processor is configured to read the executable instructions from the memory and execute the executable instructions to implement the front-end visual video content editing method of any one of claims 1 to 4.
10. A computer-readable storage medium, characterized in that the storage medium stores a computer program which, when executed by a processor, causes the processor to implement the front-end visual video content editing method of any one of claims 1-4.
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| US20140325349A1 (en) * | 2013-04-30 | 2014-10-30 | Adobe Systems Incorporated | Real-time Representations of Edited Content |
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