Adaptive Media Streaming – State Of The Art and Future Challenges

ct2013octAss.-Prof. Dipl.-Ing. Dr. Christian Timmerer | Mi, 25.06.2014 | 17:00-18:30, HS 2

Abstract: Adaptive media streaming has entered our daily lives and we see large-scale deployments within heterogeneous environments. State of the art techniques adopt a client-centric, pull-based approach which is deployed over the top of the existing delivery infrastructure. Interestingly, this kind of approach turns out to be very efficient and scales very well thanks to efficient audio-visual coding formats, adaptive client behavior, and re-use of already deployed infrastructure such as servers, proxies, caches, and content distribution networks (CDNs). This talk will review past and present adaptive media streaming approaches and present dynamic adaptive streaming over HTTP (DASH) in detail. At the end of the talk we will present and discuss future challenges in this domain.

This talk is part of / dieser Vortrag ist Teil der Ringvorlesung Informatik und Informationstechnik SS2014.

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Rückblick: Virtual Campfire – A Hero's Journey into Multimedia Storytelling

IMG_2195Am 29. Januar sprach Dr. Ralf Klamma über sein Virtual Campfire – A Hero’s Journey into Multimedia Storytelling.

Kurzfassung: Frequent usage of mobile devices such as cell phones, smart phones, PDAs, or GPS navigators creates a large amount of multimedia data. Ultra High-Speed Mobile Information and Communication (UMIC) is one of the research clusters established under the excellence initiative of the German government. Within UMIC, research is being carried out on next generation mobile applications. Based on experiences of developing a set of advanced mobile applications for communities of practice within the scenario Virtual Campfire, our framework for mobile multimedia management is concerned with mobile multimedia semantics, with multimedia metadata, with multimedia context management, and with multimedia uncertainty management. Results are evaluated on a mobile multimedia community testbed MobSOS. We aim at creation, annotation, adaptation, sharing, and consumption of

mobile multimedia data in professional communities with heterogeneous and varying needs.

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Das Kolloquium war gut besucht (siehe oben) und die Folien des Vortrags stehen online zur Verfügung (siehe unten).

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Virtual Campfire – A Hero’s Journey into Multimedia Storytelling

Abstract

Frequent usage of mobile devices such as cell phones, smart phones, PDAs, or GPS navigators creates a large amount of multimedia data. Ultra High-Speed Mobile Information and Communication (UMIC) is one of the research clusters established under the excellence initiative of the German government. Within UMIC, research is being carried out on next generation mobile applications. Based on experiences of developing a set of advanced mobile applications for communities of practice within the scenario Virtual Campfire, our framework for mobile multimedia management is concerned with mobile multimedia semantics, with multimedia metadata, with multimedia context management, and with multimedia uncertainty management. Results are evaluated on a mobile multimedia community testbed MobSOS. We aim at creation, annotation, adaptation, sharing, and consumption of mobile multimedia data in professional communities with heterogeneous and varying needs.

Curriculum Vitae

Dr. Ralf Klamma has a diploma degree (1995) and a doctoral degree (2000) both in computer science from RWTH Aachen University. Currently, Ralf leads the research group “metadata in community information systems” at the information systems chair, RWTH Aachen University. His research covers information systems theory, the application of information systems in engineering, cultural sciences, and virtual communities, social software, social network analysis, technology enhanced learning, geographic information systems, cultural heritage management, and new product development. He is the technical leader and community facilitator of the EU IP ROLE (responsive open learning environments) and member of the Aachen research cluster „Ultra High Speed Mobile Information and Communication“ (UMIC). He serves as associate editor for international journals like IEEE Transactions on Learning Technologies, IJASS, IJTEL, and IJSHC. He has more than 120 refereed publications in journals, conference proceedings and edited books and edited many conference and workshop proceedings. He is reviewer for journals like CACM, IEEE Multimedia, IEEE TKDE, IEEE Internet Computing, Information Systems and Information Systems Frontiers and conferences including ICIS, ECIS, CAiSE, CHI, EC-TEL, ACM GROUP, ACM Hypertext, CSCL and others. He is member of the German Informatics Society (GI-29676).

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