For video lecture transmission, less is more: analysis of image cropping as a cost savings technique
Pages 318 - 324
Abstract
This paper explores the implications of socio-cultural constraints on the design of a video deployment system. The research is motivated by real world difficulties faced by students in downloading large course-content videos. For instance, online lecture videos may rarely be downloaded by students because of their institution's bandwidth constraints. One simple method to lessen the bandwidth burden is to have a deployment system that crops out non-essential portions of the transmitted video. This paper explores how cropping may adversely impact a student's impressions and understanding of the transmitted content. A two part, between-subject experiment was conducted. The results: when cropping was applied, the file sizes decreased, and the message clarity increased by 12%. Moreover, cropping did not significantly lessen the personality judgment the students were making of the instructor. So, post-processing of videos for transmission, by cropping non-essential content, does show promise, while not compromising content or impressions.
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- For video lecture transmission, less is more: analysis of image cropping as a cost savings technique
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Published: 24 September 2013
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