Study On The Shot Structure Of Microvideo

With the rapid development of information technology,there is a breakthrough of time and space for online studying that can be more automatic,interactive and more.Micro-lesson,as an important digital learning resource to make it possible to study online,spent shorter time on teaching activity and possess more accurate and briefer content.It has specific theme and situational structure,being easy to be taken with the help of Internet.Moreover,it can be gotten by learners of different learning stages.At the same time,method of making micro-lesson is various that is easy to be learned.For the informational studying like online studying and mobile studying,micro-video is playing a more and more important role.Micro-lesson video being core of micro-lesson,its quality affects learner's enthusiasm and efficiency directly.What's more,among the factors of a microlesson video,shot structure of a video is more closely related to learner's attention and interest.Hence,it is significant to analyze the problems of shot structure types and structure development,to come up with rules of shot operation,and to have video both designed and made better,whose purpose is to strengthen the application effect of micro-lesson in practical education and information teaching.Studying on shot structure of micro-lesson video,this thesis downloads two thousand microlesson videos from websites,including micro-lesson competition in primary and middle school,IMOOC,National University Micro-Teaching Competition and so on.Having applied literature method,questionnaires method,comparative method and video segmentation theory,FFmpeg,the author has the shots segmented automatically,then classifies,codes and analyzes videos according to different learning stages,subjects and making methods.By learning about students' preference to micro-lesson videos that shown in the questionnaire,the advice of choosing shot structures in designing and making micro-lesson video is raised.The main content of this thesis includes:a.Having studied related literature,this thesis analyzes the research status of micro-lesson,making methods as well as shot segmentation,then elaborates the target and key point of the study on shot structure.b.Thesis classifies the different learning stages,subjects and making methods of micro-lesson according to the teaching content from a large number of micro-lesson videos in recently popular micro-lessons as well as MOOC nowadays.c.A classification system is set up in terms of the main parts in pictures,teaching methods,teaching contents of lens.Also,it segments shots automatically with shot detection method based on color histograms.In addition,number of all types of shots is counted up and the composition features of them are analyzed.d.Studying on the students' preference to different kinds of knowledge by the questionnaires,thesis brings up advice of choosing shot structure in designing and making micro-lesson video.The study confirms that of all shots in micro-lessons videos downloaded,there is about two thirds recording shots,then one quarter teachers' explaining shots,and the least ones are real class scene shots and practical shots,each being one twentieth.The questionnaire in this study shows that the shot types that students like change because of different knowledge types,which demands that micro-lesson makers should manage to choose the shot types according to students' preference of knowledge types while designing and making videos.