SynTag: a web-based platform for labeling real-time video

Authors:
Yen-Chia Hsu;Tay-Sheng Jeng;Yang-Ting Shen;Po-Chun Chen
Affiliations:
National Cheng Kung University, Tainan, Taiwan;National Cheng Kung University, Tainan, Taiwan;National Cheng Kung University, Tainan, Taiwan;National Cheng Kung University, Tainan, Taiwan
Venue:
Proceedings of the ACM 2012 conference on Computer Supported Cooperative Work
Year:
2012

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Abstract

Real-time video streaming has been widely used in multimedia learning environments. As production of online videos is increasing exponentially, it is becoming more difficult for users to reach relevant content. In this paper, we propose SynTag, a web-based platform that enables users to label three types of tags -- Good, Question, and Disagree -- and to make comments synchronously and asynchronously with visualization of time-stamp video previews on an interactive timeline. SynTag generates real-time thumbnails by using real-time tags for presenters to receive instant feedback and for other users to retrieve presentation videos. In a pilot study, we found our users' tagging behaviors significantly different when they were in lecture events or discussion events. We envision that enabling users to apply tags in real-time will help reduce the complexity of classification of videos.