In order to invent and investigate new approaches for the use of enjoying live video, we suggest a combination of emerging mobile webcasting with artistic ambient video, which would enable a form of user generated broadcasts from individually selected cherished places for home decoration. Drawing on the approach of Research through Design we present a study of people who have occasional access to highly appreciated geographical locations, a design instantiation and prototype called LiveNature, as well as a system implementation. We present the result of a technical evaluation, which was conducted during two weeks of deployment. It shows that mobile webcasting provide continuous and stable streams of such a quality that it can be presented for home decoration, and that the video can be combined with real time sensor data to generate aesthetically interesting hybrid media. We also learned that the use of mobile webcasting for home decoration raises new challenges in order to provide unobtrusive and glance based interaction.
We discuss synchronization problem in an emerging type of mul-timedia applications, called live mobile collaborative video production systems. The mobile character of the production system allows a director to be present at the site where he/she can see the event directly as well as through the mixer display. In such a situation production of a consistent broadcast is sensitive to delay and asynchrony of video streams in the mixer console. In this paper, we propose an algorithm for this situation called "frame rate exclusive sync manager", which draws on existing reactive source control synchronization techniques. It relies solely on frame-rate control and maintains synchronization between live video streams while ensuring minimal delay by dynamically adapting the frame-rate of the camera feeds based on synchronization offset and network bandwidth health. The algorithm is evaluated by simulation which indicates algorithm's capability of achieving increased synchronization among live streams.
Liveness, as discussed in HCI and in media studies, focuses on an intriguing and beloved experiential quality that can influence new forms of video applications. We suggest a shift from accounts of liveness in "events" to liveness in ambient media for home décor by designing a system called TransLive that exploits the "magic" of mediatizing the "now" at a distant and cherished place. We present an interview study including four families, who experienced the system for two weeks each in a concept apartment setting. It shows how immediacy and unpredictability provide compelling experiences. Authenticity and engagement, which are previously considered as inherent qualities in live media, instead occur in the context of use. Finally, the experience of transcendence triggered by slow and continuous video streams open up a new design space of liveness. Thus, not only do we take inspiration from liveness theory, but we also need to redefine it.
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