Interfaces for timeline-based mobile video browsing

Abstract

Browsing video on mobile devices such as smartphones and PDAs requires new interface designs and interaction concepts because of their small screen sizes. In this paper, we present four different interfaces which enable users to skim video at different replay speed levels: An interface supporting flicking similar to text browsing on an iPhone TM , an elastic slider, and two variations which also allow for interactive speed manipulation. Based on a heuristic evaluation with all four designs, revised versions of the two most promising ones have been implemented. A comparative user study proved the usefulness of the proposed designs. Both interfaces showed the same performance (measured in time needed to solve typical browsing tasks) but achieved different results in subjective user assessments.

Timeline-based video browsing on handheld devices

“…Figure 5). They have been evaluated in several user studies which are described in [2,3,4]. These evaluations confirmed the usefulness and usability of each solution, and also identified advantages and drawbacks.…”

“…browse through a list of frames) by simply moving or flicking the pen over the PDA's touch screen. In [4], we present a comparative evaluation of flicking and the elastic panning approach described in the previous paragraph.…”

Scrubbing Wheel: An Interaction Concept to Improve Video Content Navigation on Devices with Touchscreens

“…Moving the stylus left or right results in backward or forward navigation and the vertical position of the drag operation defines how fast the navigation action is performed. The same interaction concept has been proposed for video content navigation on PDAs and smartphones in a follow-up work [3]. The authors further suggested circular navigation gestures for stylusbased navigation in video and presented a few different interaction concepts in [1].…”

Browsing E-Lecture Libraries on Mobile Devices: A Spatial Interaction Concept

“…Hürst et al [14] have developed various interfaces for the mobile browsing of individual videos. Most notably, the MobileZoomSlider allows users to skim quickly through continuous video streams by replacing the original timeslider with a rubber band metaphor.…”