A Quality of Experience Testbed for Video-Mediated Group Communication

Schmitt, Marwin; Gunkel, Simon; César, Pablo

doi:10.1109/ism.2013.102

Cited by 2 publications

(2 citation statements)

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“…The engine also includes a feature to allow a shared execution of the navigation control commands. The framework integrates a native testbed developed in [12] to enable interaction via a multi-party audio/video conferencing tool.…”

Section: Related Platforms For Shared Video Watching / Social Viewingmentioning

confidence: 99%

Wersync: A web platform for synchronized social viewing enabling interaction and collaboration

Boronat

Montagud

Salvador

et al. 2021

Journal of Network and Computer Applications

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Section: Related Platforms For Shared Video Watching / Social Viewingmentioning

confidence: 99%

Wersync: A web platform for synchronized social viewing enabling interaction and collaboration

Boronat

Montagud

Salvador

et al. 2021

Journal of Network and Computer Applications

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“…In [Jan13b], the IDMS-enabled multimedia engine developed in [Sha12b] is integrated with a video-mediated group conferencing testbed [Sch13] to enable shared media consumption between remote users, while interacting via audio/video conferencing. The goal is to constitute a flexible framework that allows not only having a full control about technical aspects of IDMS (e.g., clock synchronization, algorithms, adjustment techniques …), but also investigating, from the end-user's perspective, the suitability of various strategies and policies when taking into account the media content being shared, the social setting and the interaction channels in use.…”

Section: Spec Layermentioning

confidence: 99%

Design, Development and Evaluation of an Adaptive and Standardized RTP/RTCP-Based Idms Solution

Climent¹

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ii Design, Development and Evaluation of an Adaptive and Standardized RTP/RTCP-based IDMS Solutioniii ABSTRACT Nowadays, we are witnessing a transition from physical togetherness towards networked togetherness around media content. Novel forms of shared media experiences are gaining momentum, allowing geographically distributed users to concurrently consume the same media content while socially interacting (e.g., via text, audio or video chat). Relevant use cases are, for example, Social TV, networked games and multi-party conferencing.However, realizing enjoyable shared media services faces many challenges. In particular, a key technological enabler is the concurrent synchronization of the media playout across multiple locations, which is known as Inter-Destination Multimedia Synchronization (IDMS).This PhD thesis presents an inter-operable, adaptive and accurate IDMS solution, based on extending the capabilities of RTP/RTCP standard protocols (RFC 3550). Concretely, two new RTCP messages for IDMS have been defined to carry out the necessary information to achieve IDMS. Such RTCP extensions have been standardized within the IETF, in RFC 7272. In addition, novel standard-compliant Early Event-Driven (EED) RTCP feedback reporting mechanisms have been also designed to enhance the performance in terms of interactivity, flexibility, dynamism and accuracy when performing IDMS.The designed IDMS solution makes use of globally synchronized clocks (e.g., using NTP) and can adopt different (centralized and distributed) architectural schemes to exchange the RTCP messages for IDMS. This allows efficiently providing IDMS in a variety of networked scenarios and applications, with different requirements (e.g., interactivity, scalability, robustness…) and available resources (e.g., bandwidth, latency, multicast support…). Likewise, various monitoring and control algorithms, such as dynamic strategies for selecting the reference timing to synchronize with, and fault tolerance mechanisms, have been added. Moreover, the proposed IDMS solution includes a novel Adaptive Media Playout (AMP) technique, which aims to smoothly adjust the media playout rate, within perceptually tolerable ranges, every time allowable asynchrony thresholds are exceeded.Prototypes of the IDMS solution have been implemented in both a simulation and in real media framework. The evaluation tests prove the consistent behavior and Mario Montagud Climent iv the satisfactory performance of each one of the designed components (e.g., protocols, architectural schemes, master selection policies, adjustment techniques…). Likewise, comparison results between the different developed alternatives for such components are also provided. In general, the obtained results demonstrate the ability of this RTP/RTCP-based IDMS solution to concurrently and independently maintain an overall synchronization status (within allowable limits) in different logical groups of users, while avoiding annoying playout discontinuities and hardly increasing the computational and traffic load. De...

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A Quality of Experience Testbed for Video-Mediated Group Communication

Cited by 2 publications

References 3 publications

Wersync: A web platform for synchronized social viewing enabling interaction and collaboration

Wersync: A web platform for synchronized social viewing enabling interaction and collaboration

Design, Development and Evaluation of an Adaptive and Standardized RTP/RTCP-Based Idms Solution

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