Smooth Control of Adaptive Media Playout for Video Streaming

Grad. Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei, Taiwan
IEEE Transactions on Multimedia (Impact Factor: 1.78). 12/2009; DOI: 10.1109/TMM.2009.2030543
Source: IEEE Xplore

ABSTRACT Client-side data buffering is a common technique to deal with media playout interruptions of streaming video caused by network jitters and packet losses of best-effort networks. However, stronger playout interruption protection inevitably amounts to larger data buffering and results in more memory requirements and longer playout delay. Adaptive media playout (AMP), also a client-side technique, can reduce the buffer requirement and avoid buffer outage but at the expense of visual quality degradation because of the fluctuation of playout speed. In this paper, we propose a novel AMP scheme to keep the video playout as smooth as possible while adapting to the channel condition. The triggering of the playout control is based on buffer variation rather than buffer fullness. Experimental results show that our AMP scheme surpasses conventional schemes in unfriendly network conditions. Unlike previous schemes that are tuned for a specific range of packet loss and network instability, the proposed AMP scheme maintains consistent performance across a wide range of network conditions.

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    ACM Multimedia; 11/2014
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    ABSTRACT: Inter-Destination Multimedia Synchronization (IDMS) pushes social interactions to a new level. IDMS allows the users to experience multimedia together with friends, colleagues, or the family while having a real-time communication at the same time. The actual challenge of synchronizing the playout of each participant to a reference playout time is a tough task in terms of Quality of Experience (QoE). A possible solution for carrying out the synchronization is Adaptive Media Playout (AMP) where the playout speed of the multimedia is increased or decreased. In this paper we evaluate the impact of the playout variations on the QoE by adopting a crowdsourcing approach. In particular, we investigate the impact of randomly selecting content sections for adapting the playout rate compared to our approach that exploits audio-visual features of the content in order to minimize the impact on the QoE.
    NOMS 2014 - 2014 IEEE/IFIP Network Operations and Management Symposium; 05/2014
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    ABSTRACT: Nowadays, the media consumption model is changing from passive isolated activities towards dynamic group shared experiences. People separated in space can already interact and collaborate within the context of simultaneous media content delivery (e.g. they can launch a real time conversation during a shared video watching). However, to stimulate the acceptance and usability of those socially aware interactive media services, synchronous communications (i.e. consistent playout states) across separated locations must be guaranteed. Inter-Destination Multimedia Synchronization (IDMS) has become a key research topic to enable geographically dispersed consumers to experience a satisfying feeling of togetherness. Several (distributed and centralized) approaches to perform IDMS have been adopted by the research community up to date. In this paper, a Master/Slave (M/S) Control Scheme for IDMS is implemented and tested, thus analyzing its strengths and weaknesses for distributed networked environments. Simulation results prove the effectiveness and suitability of the proposed M/S Scheme in those scenarios in which scalability, consistency, interactivity and low control traffic overhead features must be provided.

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