Real-time direct manipulation of screen-based videos

Authors:
Laurent Denoue;Scott Carter;Matthew Cooper;John Adcock
Affiliations:
FX Palo Alto Laboratory, Palo Alto, California, USA;FX Palo Alto Laboratory, Palo Alto, California, USA;FX Palo Alto Laboatory, Inc., Palo Alto, California, USA;FX Palo Alto Laboratory Inc, Palo Alto, California, USA
Venue:
Proceedings of the companion publication of the 2013 international conference on Intelligent user interfaces companion
Year:
2013

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Abstract

We describe direct video manipulation interactions applied to screen-based tutorials. In addition to using the video timeline, users of our system can quickly navigate into the video by mouse-wheel, double click over a rectangular region to zoom in and out, or drag a box over the video canvas to select text and scrub the video until the end of a text line even if not shown in the current frame. We describe the video processing techniques developed to implement these direct video manipulation techniques, and show how they are implemented to run in most modern web browsers using HTML5's CANVAS and Javascript.