摘要
为了缓解疫情期间线上教学高峰期视频播放卡顿的问题,本文从教学视频录制软件的特点、视频编码、视频帧数加以分析,旨在为结构力学课程及其他线上教学课程提供文件小而画面清晰的视频。分析得出屏幕录像专家V2019具有调整画面尺寸、视频帧数、编码类型的特点。选用不同视频编码、帧数,录制结构力学课程“6-1力法的基本概念”,确定20帧H264格式的MP4视频有着文件小而画面清晰的特点。经学习结构力学课程的学生反馈,文件小而画面清晰的视频深受学生们的喜爱。
In order to alleviate the problem of video playback during the online teaching peak of the epidemic, the characteristics of teaching video recording software, video coding and video frame number are analyzed to provide small file and clear picture video for "structural mechanics" and other online teaching courses. The analysis shows that the screen recording expert V2019 has the characteristics of adjusting the picture size,video frame number and coding type. The 20-frame H264 format MP4 video has the characteristics of small files and clear pictures by selecting different video encoding and frame numbers, recording "6-1 Basic concept of force method" in"structure mechanics". After feedback from students who studied the course "Structure of Mechanics", the video with small files and clear pictures is very popular among students.
作者
杨冬升
凌静
YANG Dongsheng;LING Jing(School of Materials and Architectural Engineering,Guizhou Normal University,Guiyang City,Guizhou Province 550001,China)
出处
《四川建材》
2020年第9期239-240,共2页
Sichuan Building Materials
基金
省级一流本科专业(土木工程)建设点资助项目(教高厅函[2019]46号)
贵州师范大学2017年度学术新苗培养及创新探索专项项目(黔科合平台人才[2017]5726-03)
贵州师范大学2014年博士科研启动项目。
关键词
线上教学
结构力学
视频录制
视频编码
高清
online teaching
structural mechanics
video recording
video coding
high definition
