CN111246288A - Method and terminal for demonstrating PPTX document in video mode - Google Patents

Method and terminal for demonstrating PPTX document in video mode Download PDF

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Publication number
CN111246288A
CN111246288A CN202010074693.4A CN202010074693A CN111246288A CN 111246288 A CN111246288 A CN 111246288A CN 202010074693 A CN202010074693 A CN 202010074693A CN 111246288 A CN111246288 A CN 111246288A
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slide
page
pptx
video
voice
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Chinese (zh)
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刘德建
林严
郭玉湖
陈宏�
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Fujian Tianquan Educational Technology Ltd
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Fujian Tianquan Educational Technology Ltd
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Priority to CN202010074693.4A priority Critical patent/CN111246288A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing 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
    • H04N21/44Processing 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
    • H04N21/44016Processing 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 splicing one content stream with another content stream, e.g. for substituting a video clip
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing 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
    • H04N21/439Processing of audio elementary streams
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing 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
    • H04N21/44Processing 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
    • H04N21/4402Processing 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
    • H04N21/440236Processing 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85Assembly of content; Generation of multimedia applications
    • H04N21/854Content authoring
    • H04N21/8543Content authoring using a description language, e.g. Multimedia and Hypermedia information coding Expert Group [MHEG], eXtensible Markup Language [XML]

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

The invention discloses a method and a terminal for demonstrating a PPTX document in a video mode, wherein a request for demonstrating that the PPTX document is converted into a video file is received; acquiring remark information corresponding to each page of slide in a PPTX document to be subjected to video presentation according to the request, and converting the remark information corresponding to each page of slide into a voice file stream; acquiring pictures of each page of slide of the PPTX document to be demonstrated, synthesizing the pictures of each page of slide and the corresponding voice file stream into a corresponding video clip, and determining the duration of the video clip corresponding to each page of slide according to the voice length of the corresponding voice file stream; sequentially combining the video clips corresponding to each page of slide of the PPTX document to be demonstrated to form a video file corresponding to the PPTX document to be demonstrated; compared with the conventional video file required for generating the video presentation PPTX document in a recording mode, the method can generate the PPTX video file more conveniently and flexibly and realize the video presentation of the PPTX document.

Description

Method and terminal for demonstrating PPTX document in video mode
Technical Field
The invention relates to the field of video processing, in particular to a method and a terminal for demonstrating a PPTX document in a video mode.
Background
For the convenience of reading and viewing by users, PPTX documents are often converted into videos for presentation. The video demonstration PPTX document is widely applied to more and more application scenes, such as online teaching, teaching videos capable of being played repeatedly and the like. The existing method for realizing video presentation of PPTX documents generally records PPTX documents into a video in a recording manner, that is, records PPTX documents played on a screen, and simultaneously adds voice information corresponding to each page synchronously, however, the generation method of PPTX document video needs additional adding of voice information, and simultaneously needs to determine the length of voice information corresponding to each page of slides according to the recorded video, which not only is the generation method cumbersome, but also the audio information that can be added to each page depends on the switching speed of the recorded PPTX, and the flexibility is too low.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method and the terminal for video presentation of the PPTX document can conveniently and flexibly generate the PPTX video file and realize video presentation of the PPTX document.
In order to solve the technical problems, the invention adopts a technical scheme that:
a method of videoscopically presenting a PPTX document, comprising the steps of:
s1, receiving a request for converting the PPTX document into a video file for demonstration;
s2, obtaining remark information corresponding to each page of slide in the PPTX document to be demonstrated according to the request, and converting the remark information corresponding to each page of slide into a voice file stream;
s3, acquiring pictures of each page of slide of the PPTX document to be demonstrated, synthesizing the pictures of each page of slide and the corresponding voice file stream into a corresponding video clip, and determining the duration of the video clip corresponding to each page of slide according to the voice length of the corresponding voice file stream;
s4, sequentially combining the video clips corresponding to each page of slide of the PPTX document to be demonstrated to form a video file corresponding to the PPTX document to be demonstrated.
In order to solve the technical problem, the invention adopts another technical scheme as follows:
a terminal for video presentation of PPTX documents, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to perform the following steps:
s1, receiving a request for converting the PPTX document into a video file for demonstration;
s2, obtaining remark information corresponding to each page of slide in the PPTX document to be subjected to video presentation according to the request, and converting the remark information corresponding to each page of slide into a voice file stream;
s3, acquiring pictures of each page of slide of the PPTX document to be demonstrated, synthesizing the pictures of each page of slide and the corresponding voice file stream into a corresponding video clip, and determining the duration of the video clip corresponding to each page of slide according to the voice length of the corresponding voice file stream;
s4, sequentially combining the video clips corresponding to each page of slide of the PPTX document to be demonstrated to form a video file corresponding to the PPTX document to be demonstrated.
The invention has the beneficial effects that: acquiring remark information corresponding to each page of slide in a PPTX document to be demonstrated, converting the remark information into a voice file stream, synthesizing pictures corresponding to each page of slide into corresponding video clips, and finally merging the video clips corresponding to each slide into a video file according to the playing sequence of the slides, wherein the duration of the video clip corresponding to each page of slide is determined according to the voice length of the voice file stream corresponding to each page of slide; the video playing time of each page of slide can be automatically determined according to the voice length of the voice file stream corresponding to each page of slide, and the video segments corresponding to each page of slide are automatically combined to form a video file corresponding to the PPTX document to be video-demonstrated.
Drawings
FIG. 1 is a flow chart illustrating steps of a method for video presentation of PPTX documents in accordance with an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a terminal for video presentation of a PPTX document according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a method for delaying PPTX documents in a video according to an embodiment of the present invention;
description of reference numerals:
1. a terminal for video demonstration of PPTX documents; 2. a memory; 3. a processor.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1, a method for demonstrating PPTX documents in a video mode includes the following steps:
s1, receiving a request for converting the PPTX document into a video file for demonstration;
s2, obtaining remark information corresponding to each page of slide in the PPTX document to be subjected to video presentation according to the request, and converting the remark information corresponding to each page of slide into a voice file stream;
s3, acquiring pictures of each page of slide of the PPTX document to be demonstrated, synthesizing the pictures of each page of slide and the corresponding voice file stream into a corresponding video clip, and determining the duration of the video clip corresponding to each page of slide according to the voice length of the corresponding voice file stream;
s4, sequentially combining the video clips corresponding to each page of slide of the PPTX document to be demonstrated to form a video file corresponding to the PPTX document to be demonstrated.
As can be seen from the above description, the beneficial effects of the present invention are: acquiring remark information corresponding to each page of slide in a PPTX document to be demonstrated, converting the remark information into a voice file stream, synthesizing pictures corresponding to each page of slide into corresponding video clips, and finally merging the video clips corresponding to each slide into a video file according to the playing sequence of the slides, wherein the duration of the video clip corresponding to each page of slide is determined according to the voice length of the voice file stream corresponding to each page of slide; the video playing time of each page of slide can be automatically determined according to the voice length of the voice file stream corresponding to each page of slide, and the video segments corresponding to each page of slide are automatically combined to form a video file corresponding to the PPTX document to be video-demonstrated.
Further, the acquiring remark information corresponding to each page of slide in the PPTX document to be presented according to the request includes:
reading the content in the PPTX compression format file by using zlib, and reading an xml node in the read PPTX compression format file by using repidxml;
and traversing all page number nodes in the xml nodes to acquire remark information corresponding to each page of slide in the PPTX document to be subjected to video presentation.
As can be seen from the above description, the remark information corresponding to each slide in the PPTX document can be accurately and quickly acquired by means of zlib and repidxml.
Further, the step S2 further includes:
and determining the voice length of the voice file stream corresponding to each page of slide, and associating and storing the voice file stream corresponding to each page of slide, the voice length corresponding to the voice file stream and the page number corresponding to each page of slide.
According to the description, the voice file stream corresponding to each page of slide, the voice length corresponding to the voice file stream and the page corresponding to each page of slide are associated and stored, so that the video file can be conveniently, quickly and accurately synthesized during the subsequent generation of the video file.
Further, the step S3 includes:
acquiring a picture corresponding to each page of slide of a PPTX document to be video-demonstrated;
determining a voice file stream associated with the picture and a voice length corresponding to the voice file stream according to the page number corresponding to the slide where the picture is located;
and combining the picture and the voice file stream into a corresponding video clip, and determining the time length of the video clip according to the voice length.
According to the description, the voice file stream associated with the picture of the PPTX slide and the voice length used for determining the duration of the video clip are determined according to the page number corresponding to the PPTX slide, so that the method is convenient, quick, accurate and reliable.
Further, the step S2 further includes:
if the slides of the PPTX documents to be subjected to video presentation do not have remark information, setting preset time length for the slides;
the step S3 further includes:
and if the slide of the PPTX document to be subjected to video presentation does not have remark information, the time length of the corresponding video clip is the preset time length.
According to the description, the preset time length is set for the slides without remark information, and the time length of the video clip corresponding to the slides is set according to the preset time length when the videos are synthesized for the slides without remark information, so that the flexibility of video generation is improved, the generation of the video file corresponding to the PPTX document without remark information can be compatible, and the universality is high.
Referring to fig. 2, a terminal for video-based presentation of PPTX documents includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program:
s1, receiving a request for converting the PPTX document into a video file for demonstration;
s2, obtaining remark information corresponding to each page of slide in the PPTX document to be subjected to video presentation according to the request, and converting the remark information corresponding to each page of slide into a voice file stream;
s3, acquiring pictures of each page of slide of the PPTX document to be demonstrated, synthesizing the pictures of each page of slide and the corresponding voice file stream into a corresponding video clip, and determining the duration of the video clip corresponding to each page of slide according to the voice length of the corresponding voice file stream;
s4, sequentially combining the video clips corresponding to each page of slide of the PPTX document to be demonstrated to form a video file corresponding to the PPTX document to be demonstrated.
As can be seen from the above description, the beneficial effects of the present invention are: acquiring remark information corresponding to each page of slide in a PPTX document to be demonstrated, converting the remark information into a voice file stream, synthesizing pictures corresponding to each page of slide into corresponding video clips, and finally merging the video clips corresponding to each slide into a video file according to the playing sequence of the slides, wherein the duration of the video clip corresponding to each page of slide is determined according to the voice length of the voice file stream corresponding to each page of slide; the video playing time of each page of slide can be automatically determined according to the voice length of the voice file stream corresponding to each page of slide, and the video segments corresponding to each page of slide are automatically combined to form a video file corresponding to the PPTX document to be video-demonstrated.
Further, the acquiring remark information corresponding to each page of slide in the PPTX document to be presented according to the request includes:
reading the content in the PPTX compression format file by using zlib, and reading an xml node in the read PPTX compression format file by using repidxml;
and traversing all page number nodes in the xml nodes to acquire remark information corresponding to each page of slide in the PPTX document to be subjected to video presentation.
As can be seen from the above description, the remark information corresponding to each slide in the PPTX document can be accurately and quickly acquired by means of zlib and repidxml.
Further, the step S2 further includes:
and determining the voice length of the voice file stream corresponding to each page of slide, and associating and storing the voice file stream corresponding to each page of slide, the voice length corresponding to the voice file stream and the page number corresponding to each page of slide.
According to the description, the voice file stream corresponding to each page of slide, the voice length corresponding to the voice file stream and the page corresponding to each page of slide are associated and stored, so that the video file can be conveniently, quickly and accurately synthesized during the subsequent generation of the video file.
Further, the step S3 includes:
acquiring a picture corresponding to each page of slide of a PPTX document to be video-demonstrated;
determining a voice file stream associated with the picture and a voice length corresponding to the voice file stream according to the page number corresponding to the slide where the picture is located;
and combining the picture and the voice file stream into a corresponding video clip, and determining the time length of the video clip according to the voice length.
According to the description, the voice file stream associated with the picture of the PPTX slide and the voice length used for determining the duration of the video clip are determined according to the page number corresponding to the PPTX slide, so that the method is convenient, quick, accurate and reliable.
Further, the step S2 further includes:
if the slides of the PPTX documents to be subjected to video presentation do not have remark information, setting preset time length for the slides;
the step S3 further includes:
and if the slide of the PPTX document to be subjected to video presentation does not have remark information, the time length of the corresponding video clip is the preset time length.
According to the description, the preset time length is set for the slides without remark information, and the time length of the video clip corresponding to the slides is set according to the preset time length when the videos are synthesized for the slides without remark information, so that the flexibility of video generation is improved, the generation of the video file corresponding to the PPTX document without remark information can be compatible, and the universality is high.
Example one
Referring to fig. 1, a method for demonstrating PPTX documents in a video mode includes the following steps:
s1, receiving a request for converting the PPTX document into a video file for demonstration;
s2, obtaining remark information corresponding to each page of slide in the PPTX document to be subjected to video presentation according to the request, and converting the remark information corresponding to each page of slide into a voice file stream;
as shown in fig. 3, the acquiring remark information corresponding to each page of slide in the PPTX document to be presented according to the request includes:
reading the content in the PPTX compression format file by using zlib, and reading an xml node in the read PPTX compression format file by using repidxml;
traversing all page number nodes in the xml nodes to acquire remark information corresponding to each page of slide in the PPTX document to be subjected to video presentation;
specifically, all the page numbers # (assumed to be 7) in the noteslide directory under the ppt directory in the decompressed directory are traversed, wherein the notesSlide #. xml (notesSlide7.xml) and the notesSlide #. xml.rels under the _ rels directory represent the content in the # page (page 7) and the associated content thereof;
if remark information exists in a certain pptx slide, a p: txBody node exists in a p: sp node, all a: r nodes existing in a sub-node a: p of the p: txBody node are searched, the content of a: t under the a: r nodes is remark content, and the content of all the a: r nodes is sequenced according to the node sequence to obtain all the remark content;
if the slides of the PPTX documents to be subjected to video presentation do not have remark information, setting preset time length for the slides;
the step S2 further includes:
determining the voice length of the voice file stream corresponding to each page of slide, and associating and storing the voice file stream corresponding to each page of slide, the voice length corresponding to the voice file stream and the page number corresponding to each page of slide;
optionally, the remark information and the number of pages of the slide are bound to form a unique identifier, and the unique identifier is transmitted in a json array form to serve as data for converting text into voice;
for data in the form of a json array, converting remark information texts corresponding to each slide into voice file streams through a peechSynthesizer library SetOutputToWaveFile;
for the slides without remark information, correlating and storing the corresponding preset duration and the page number of the slides;
s3, acquiring pictures of each page of slide of the PPTX document to be demonstrated, synthesizing the pictures of each page of slide and the corresponding voice file stream into a corresponding video clip, and determining the duration of the video clip corresponding to each page of slide according to the voice length of the corresponding voice file stream;
the step S3 includes:
acquiring a picture corresponding to each page of slide of a PPTX document to be video-demonstrated;
determining a voice file stream associated with the picture and a voice length corresponding to the voice file stream according to the page number corresponding to the slide where the picture is located;
merging the picture and the voice file stream into a corresponding video clip, and determining the time length of the video clip according to the voice length;
specifically, a java POI library is used for outputting pictures of each page of slide, and a ffmpeg library is used for synthesizing a video for the pictures of each page and a voice file stream corresponding to each page;
if the slide of the PPTX document to be subjected to video presentation does not have remark information, the time length of the corresponding video clip is the preset time length;
s4, sequentially combining the video clips corresponding to each page of slide of the PPTX document to be demonstrated to form a video file corresponding to the PPTX document to be demonstrated.
Example two
Referring to fig. 2, a terminal 1 for video presentation of PPTX documents includes a memory 2, a processor 3 and a computer program stored in the memory 2 and executable on the processor 3, wherein the processor 3 implements the steps of one embodiment when executing the computer program.
In summary, the method and the terminal for video presentation of a PPTX document according to the present invention obtain remark information corresponding to each page of slide in the PPTX document to be presented, convert the remark information into a voice file stream, synthesize a corresponding video clip with a picture corresponding to each page of slide, and finally merge the video clip corresponding to each slide into a video file according to a playing sequence of the slides, wherein a duration of the video clip corresponding to each page of slide is determined according to a voice length of the voice file stream corresponding to the video clip; the remark information corresponding to each slide can be quickly and accurately acquired by virtue of zlib and repidxml; the video playing time length of each page of slide can be automatically determined according to the voice length of the voice file stream corresponding to each page of slide, and the video segments corresponding to each page of slide are automatically combined to form a video file corresponding to the PPTX document to be video-demonstrated, so that compared with the conventional video file required by the video-demonstrated PPTX document generated in a recording mode, the PPTX video file can be generated more conveniently and flexibly, and the video-demonstrated PPTX document is realized; meanwhile, if the slide has no remark information, setting a preset time length; and determining the duration of the video clip corresponding to the slide according to the preset duration, and automatically generating a corresponding video file no matter whether remark information exists or not, so that the flexibility is high and the adaptability is strong.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.

Claims (10)

1. A method for video presentation of PPTX documents, comprising the steps of:
s1, receiving a request for converting the PPTX document into a video file for demonstration;
s2, obtaining remark information corresponding to each page of slide in the PPTX document to be subjected to video presentation according to the request, and converting the remark information corresponding to each page of slide into a voice file stream;
s3, acquiring pictures of each page of slide of the PPTX document to be demonstrated, synthesizing the pictures of each page of slide and the corresponding voice file stream into a corresponding video clip, and determining the duration of the video clip corresponding to each page of slide according to the voice length of the corresponding voice file stream;
s4, sequentially combining the video clips corresponding to each page of slide of the PPTX document to be demonstrated to form a video file corresponding to the PPTX document to be demonstrated.
2. The method for video presentation of a PPTX document according to claim 1, wherein the obtaining remark information corresponding to each slide in the PPTX document to be presented according to the request comprises:
reading the content in the PPTX compression format file by using zlib, and reading an xml node in the read PPTX compression format file by using repidxml;
and traversing all page number nodes in the xml nodes to acquire remark information corresponding to each page of slide in the PPTX document to be subjected to video presentation.
3. The method for video presentation of PPTX documents according to claim 1, wherein said step S2 further comprises:
and determining the voice length of the voice file stream corresponding to each page of slide, and associating and storing the voice file stream corresponding to each page of slide, the voice length corresponding to the voice file stream and the page number corresponding to each page of slide.
4. The method for video presentation of a PPTX document according to claim 3, wherein said step S3 comprises:
acquiring a picture corresponding to each page of slide of a PPTX document to be video-demonstrated;
determining a voice file stream associated with the picture and a voice length corresponding to the voice file stream according to the page number corresponding to the slide where the picture is located;
and combining the picture and the voice file stream into a corresponding video clip, and determining the time length of the video clip according to the voice length.
5. The method for video presentation of PPTX documents according to claim 1, wherein said step S2 further comprises:
if the slides of the PPTX documents to be subjected to video presentation do not have remark information, setting preset time length for the slides;
the step S3 further includes:
and if the slide of the PPTX document to be subjected to video presentation does not have remark information, the time length of the corresponding video clip is the preset time length.
6. A terminal for video presentation of PPTX documents, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to perform the following steps:
s1, receiving a request for converting the PPTX document into a video file for demonstration;
s2, obtaining remark information corresponding to each page of slide in the PPTX document to be subjected to video presentation according to the request, and converting the remark information corresponding to each page of slide into a voice file stream;
s3, acquiring pictures of each page of slide of the PPTX document to be demonstrated, synthesizing the pictures of each page of slide and the corresponding voice file stream into a corresponding video clip, and determining the duration of the video clip corresponding to each page of slide according to the voice length of the corresponding voice file stream;
s4, sequentially combining the video clips corresponding to each page of slide of the PPTX document to be demonstrated to form a video file corresponding to the PPTX document to be demonstrated.
7. The terminal for video presentation of a PPTX document according to claim 6, wherein the obtaining remark information corresponding to each slide in the PPTX document to be presented according to the request comprises:
reading the content in the PPTX compression format file by using zlib, and reading an xml node in the read PPTX compression format file by using repidxml;
and traversing all page number nodes in the xml nodes to acquire remark information corresponding to each page of slide in the PPTX document to be subjected to video presentation.
8. The terminal for video presentation of PPTX documents according to claim 6, wherein said step S2 further comprises:
and determining the voice length of the voice file stream corresponding to each page of slide, and associating and storing the voice file stream corresponding to each page of slide, the voice length corresponding to the voice file stream and the page number corresponding to each page of slide.
9. The terminal for video presentation of PPTX documents according to claim 8, wherein said step S3 comprises:
acquiring a picture corresponding to each page of slide of a PPTX document to be video-demonstrated;
determining a voice file stream associated with the picture and a voice length corresponding to the voice file stream according to the page number corresponding to the slide where the picture is located;
and combining the picture and the voice file stream into a corresponding video clip, and determining the time length of the video clip according to the voice length.
10. The terminal for video presentation of PPTX documents according to claim 6, wherein said step S2 further comprises:
if the slides of the PPTX documents to be subjected to video presentation do not have remark information, setting preset time length for the slides;
the step S3 further includes:
and if the slide of the PPTX document to be subjected to video presentation does not have remark information, the time length of the corresponding video clip is the preset time length.
CN202010074693.4A 2020-01-22 2020-01-22 Method and terminal for demonstrating PPTX document in video mode Pending CN111246288A (en)

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CN112529111A (en) * 2020-12-28 2021-03-19 广东国粒教育技术有限公司 Method for calculating class preparation innovation degree of teacher based on ppt document comparison technology
CN113626013A (en) * 2021-08-04 2021-11-09 中国人民解放军战略支援部队航天工程大学 Automatic interpretation method and device for slides
CN113938745A (en) * 2020-07-14 2022-01-14 Tcl科技集团股份有限公司 Video generation method, terminal and storage medium
CN114363529A (en) * 2021-12-08 2022-04-15 上海浦东发展银行股份有限公司 Video generation method, device, computer equipment, storage medium and product

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