The ACM Multimedia 2010 paper entitled Keep Moving! Revisiting Thumbnails for Mobile Video Retrieval by Wolfgang Hürst, Cees G. M. Snoek, Willem-Jan Spoel, and Mate Tomin is available online.

Motivated by the increasing popularity of video on handheld devices and the resulting importance for effective video retrieval, this paper revisits the relevance of thumbnails in a mobile video retrieval setting. In particular, we quantified the usage of static and dynamic thumbnails for interactive video retrieval on a handheld device. Contrary to widespread believe that screens of handheld devices are unsuited for visualizing multiple (small) thumbnails simultaneously, our results suggest that users are quite able to handle and assess multiple thumbnails, especially when they are showing moving images. This result suggests promising avenues for future research with respect to the design and interaction with advanced video retrieval interfaces on mobile devices. Although the limited screen estate of handheld devices allows for less advanced video retrieval interfaces than those common for the desktop, they can be still much more complex that one would assume, especially when they rely on moving images. Therefore, when designing mobile video retrieval interfaces we recommend keep moving!