Systematic Review of Multiple Contents Synchronization in Interactive Television Scenario

Segundo, Ricardo Mendes Costa; Santos, Celso A. S.

doi:10.1155/2014/127142

Cited by 8 publications

(11 citation statements)

References 66 publications

(302 reference statements)

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“…Considerable works from a variety of perspectives exist for Second Screen [3][4][5][6][7][8][9][10][11][12][13][14]. The applicability and research goals can be classified by the target audience, considering both local and remote users.…”

Section: Related Workmentioning

confidence: 99%

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Second Screen Engagement of Event Spectators

Černý

Donahoo

2018

Advances in Human-Computer Interaction

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An effective means of engaging spectators at live events involves providing real-time information from a variety of sources. Consumers demand personalized experience; thus, a single channel perspective fails. Modern entertainment must extend to spectator mobile devices and adapt content to individual interests. Moreover, such systems should take advantage of venue screens to engage in sharing live information, aggregated social media, etc. We propose a second screen application, providing each audience member a personalized perspective, involving mobile devices equipped with Wi-Fi, and spanning to venue screens in hotels, halls, arenas, elevators, etc. Such a system engages both local audience and remote spectators. Our work provides a case study involving experience from the deployment of such an application at the ACM-ICPC World Finals with audiences at the event and around the world. We analyze and categorize its features, consider its impact on the audience, and measure its demands.

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Section: Related Workmentioning

confidence: 99%

“…The papers [6] and [9] provide a roadmap to the various applications and features of Second Screen. Its applicability to the video content interaction involves replays, playback point selection, or gestures to simplify interaction with the content.…”

Section: Passive Entertainment Reproductionmentioning

confidence: 99%

Second Screen Engagement of Event Spectators

Černý

Donahoo

2018

Advances in Human-Computer Interaction

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“…The following research publications (chronologically ordered) provide a thorough review of the state-of-the art in multimedia synchronization: [Lit91], [Ehl94], [Köh94], [Bla96], [Per96], [Ish00], [Lao02], [Bor09a], [Sha12a], [Hua13], and [Men14].…”

Section: Multimedia Synchronization Surveys and Classificationmentioning

confidence: 99%

“…This dimension is relevant because it is not appropriate to use a single synchronization reference model to represent all possible use cases or applications, as the requirements on temporal synchronization, and on selecting the synchronization reference (being this reference a specific device, site, stream and/or participant) are largely activity-dependent, and have a different impact on the human perception. The orthogonal dimensions, with their hierarchical structure (if any), of this synchronization reference model are illustrated in The study in [Men14] provides a systematic literature review and mapping study on multiple TV content synchronization. That study surveys existing synchronization solutions, classifying them in terms of: types of involved devices, types of media content, types of synchronization techniques, targeted applications or scenarios, and evaluation methodologies.…”

Section: Specification Layermentioning

confidence: 99%

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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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