| Abstract | Digital video creates the potential for several new browsing controls that could not be implemented on VCRs (which play analogue media), such as random access to video segments, looping, segment preview by thumbnails, slide bar, and other indexing mechanisms supporting video browsing. Previous research has indicated that the use of different media player controls (like Fast Forward) depends strongly on the content of the video. In particular audio-centric videos (classroom lectures, conference presentations) tend to reveal uses of media browser controls supporting content indexing. Video-centric content (sports, travel) makes the use of video frame based navigation more relevant, while narrative/entertainment-centric content (shows) does not promote use of browsing functionality because the viewer's enjoinment is bound to the sequential and normal play speed of the media. We examined the use of media player controls by highly skilled music students viewing one of their own ensemble coaching lessons. Such lessons have both important audio components (music played and verbal instructions), and video components (musician movements and postures). The data analysis of overall judgment of media player control usefulness shows a significant difference between ensemble and individual viewing, the ensemble judging the controls more useful overall. In addition, some controls were judged as being more useful than others. The preferred control was the slide bar, which supports rapid positioning of the play head as well as variable speed browsing of video content. The data on control use is convergent with this result because the slide bar was the most used media player control. |
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