Design parameters for storyboard-based mobile video browsing interfaces

With the omnipresence of video playback on handheld devices, better interface design for fast access to mobile video content becomes essential. We present two experiments investigating optimum interaction with storyboard-based designs for mobile video browsing. Concretely, we evaluate maximum speeds at which users can process visual information; an important characteristic when quickly skimming storyboards. In addition, we evaluate two different interaction concepts, i.e., page-based scrolling and flicking, with respect to performance and qualitative user experience. Our results indicate that people can perform surprisingly well at relatively high scrolling speeds, but those fast speeds are not appreciated by most subjects and stronger differences exist in performance. Likewise, there is no clear trend for any of the two tested interaction modes. Both performance as well as personal preferences seem to be highly individual, thus suggesting a combination of different modes as best interface design.