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Resource efficient live ambient video
Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
2016 (English)Conference paper (Refereed)
Place, publisher, year, edition, pages
2016.
Keyword [en]
Ambient video, mobile webcasting, live, energy efficiency, network efficiency
National Category
Information Systems
Research subject
Computer and Systems Sciences
Identifiers
URN: urn:nbn:se:su:diva-124315OAI: oai:DiVA.org:su-124315DiVA: diva2:884895
Conference
International conference on multimedia and ubiquitous engineering 2016
Available from: 2015-12-17 Created: 2015-12-17 Last updated: 2015-12-18
In thesis
1. Live Mobile Video Interaction: Inventing and investigating technology, formats and applications
Open this publication in new window or tab >>Live Mobile Video Interaction: Inventing and investigating technology, formats and applications
2015 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The convergence of inexpensive video-enabled mobile phones, high-speed mobile data networks and ubiquitous sensing devices opens up a new design space called “live mobile video interaction”. It gives rise to a new genre of applications concerning live mobile video production, which can be seen as an instance of the said space. In this work we are particularly interested to explore potential technical challenges and opportunities presented by “live mobile video interaction”. We started our investigation by studying two existing prototypes from the said genre i.e. the Instant Broadcasting System (IBS) and the Mobile Vision Mixer (MVM). We studied their applicability for amateur users of collaborative mobile video production tools and the problems caused by inherent communication delays in the Internet. We acquired initial user feedback and conducted technical tests on Instant Broadcasting System (IBS) and Mobile Vision Mixer (MVM). Our results indicate that lack of synchronisation among video streams causes problems for directors in such systems that were not present in professional systems. We also identified two distinct video production modes depending on visual access of the director to the event that is being filmed. Based on our study we proposed technical design suggestions and indications on how to solve the synchronisation problems in respective mixing modes. We also proposed an algorithm for frame-rate exclusive synchronisation management of live streams in a collaborative mobile production environment. We further probed the design space using the research through design method, which resulted in a fully functional prototype system called “Livenature” that would incite an emotional connection that exists between people and the places they cherish. Further investigation of Livenature allowed us to produce detailed studies about experiential and technical aspects of the system, thus revealing phenomenological and technical dimensions of the design space.

Place, publisher, year, edition, pages
Stockholm: Department of Computer and Systems Sciences, Stockholm University, 2015
Series
Report Series / Department of Computer & Systems Sciences, ISSN 1101-8526 ; 16-001
Keyword
human computer interaction, liveness, live, ambient video, mobile webcasting
National Category
Human Computer Interaction Computer and Information Science
Research subject
Computer and Systems Sciences
Identifiers
urn:nbn:se:su:diva-124317 (URN)978-91-7649-324-3 (ISBN)
Public defence
2016-02-04, Lilla hörsalen, NOD-huset, Borgarfjordsgatan 12, Kista, 13:00 (English)
Opponent
Supervisors
Available from: 2016-01-12 Created: 2015-12-17 Last updated: 2015-12-22Bibliographically approved

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Mughal, Mudassar Ahmad
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