Video object annotation, navigation, and composition
Proceedings of the 21st annual ACM symposium on User interface software and technology
Amplifying community content creation with mixed initiative information extraction
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Proceedings of the 5th International Symposium on Wikis and Open Collaboration
The work of sustaining order in wikipedia: the banning of a vandal
Proceedings of the 2010 ACM conference on Computer supported cooperative work
Determinants of wikipedia quality: the roles of global and local contribution inequality
Proceedings of the 2010 ACM conference on Computer supported cooperative work
wikiBABEL: community creation of multilingual data
WikiSym '08 Proceedings of the 4th International Symposium on Wikis
Creating and sharing personalized time-based annotations of videos on the web
Proceedings of the 10th ACM symposium on Document engineering
Using temporal video annotation as a navigational aid for video browsing
UIST '10 Adjunct proceedings of the 23nd annual ACM symposium on User interface software and technology
The choreographer's notebook: a video annotation system for dancers and choreographers
C&C '11 Proceedings of the 8th ACM conference on Creativity and cognition
Technology-mediated contributions: editing behaviors among new wikipedians
Proceedings of the ACM 2012 conference on Computer Supported Cooperative Work
Shepherding the crowd yields better work
Proceedings of the ACM 2012 conference on Computer Supported Cooperative Work
"Yours is better!": participant response bias in HCI
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
CoVidA: pen-based collaborative video annotation
Proceedings of the 1st International Workshop on Visual Interfaces for Ground Truth Collection in Computer Vision Applications
Proceedings of the 2013 conference on Computer supported cooperative work
Making peripheral participation legitimate: reader engagement experiments in wikipedia
Proceedings of the 2013 conference on Computer supported cooperative work
Using edit sessions to measure participation in wikipedia
Proceedings of the 2013 conference on Computer supported cooperative work
TypeRighting: combining the benefits of handwriting and typeface in online educational videos
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Annotation of endoscopic videos on mobile devices: a bottom-up approach
Proceedings of the 4th ACM Multimedia Systems Conference
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Videos are becoming an increasingly popular medium for communicating information, especially for online education. Recent efforts by organizations like Coursera, edX, Udacity and Khan Academy have produced thousands of educational videos with hundreds of millions of views in their attempt to make high quality teaching available to the masses. As a medium, videos are time-consuming to produce and cannot be easily modified after release. As a result, errors or problems with legibility are common. While text-based information platforms like Wikipedia have benefitted enormously from crowdsourced contributions for the creation and improvement of content, the various limitations of video hinder the collaborative editing and improvement of educational videos. To address this issue, we present VidWiki, an online platform that enables students to iteratively improve the presentation quality and content of educational videos. Through the platform, users can improve the legibility of handwriting, correct errors, or translate text in videos by overlaying typeset content such as text, shapes, equations, or images. We conducted a small user study in which 13 novice users annotated and revised Khan Academy videos. Our results suggest that with only a small investment of time on the part of viewers, it may be possible to make meaningful improvements in online educational videos.