Multimedia document synchronization in a distributed social context

Jansen, Jack; César, Pablo; Bulterman, Dick C. A.

doi:10.1145/2494266.2494314

Cited by 5 publications

(9 citation statements)

References 12 publications

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“…The measured one-way delays, 50 ms for the audio and 130 ms for the video streams, are in line with the requirements of less than 100-ms (audio) and 500-ms (video) delays mediating smooth social interaction [ 26 , 27 ]. The 80-ms misalignment between the audio and video streams falls within the perceptual integration window of natural speech [ 28 , 29 ].…”

Section: Discussionsupporting

confidence: 68%

An Internet-Based Real-Time Audiovisual Link for Dual MEG Recordings

et al. 2015

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HyperscanningMost neuroimaging studies of human social cognition have focused on brain activity of single subjects. More recently, “two-person neuroimaging” has been introduced, with simultaneous recordings of brain signals from two subjects involved in social interaction. These simultaneous “hyperscanning” recordings have already been carried out with a spectrum of neuroimaging modalities, such as functional magnetic resonance imaging (fMRI), electroencephalography (EEG), and functional near-infrared spectroscopy (fNIRS).Dual MEG SetupWe have recently developed a setup for simultaneous magnetoencephalographic (MEG) recordings of two subjects that communicate in real time over an audio link between two geographically separated MEG laboratories. Here we present an extended version of the setup, where we have added a video connection and replaced the telephone-landline-based link with an Internet connection. Our setup enabled transmission of video and audio streams between the sites with a one-way communication latency of about 130 ms. Our software that allows reproducing the setup is publicly available.ValidationWe demonstrate that the audiovisual Internet-based link can mediate real-time interaction between two subjects who try to mirror each others’ hand movements that they can see via the video link. All the nine pairs were able to synchronize their behavior. In addition to the video, we captured the subjects’ movements with accelerometers attached to their index fingers; we determined from these signals that the average synchronization accuracy was 215 ms. In one subject pair we demonstrate inter-subject coherence patterns of the MEG signals that peak over the sensorimotor areas contralateral to the hand used in the task.

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Section: Discussionsupporting

confidence: 68%

An Internet-Based Real-Time Audiovisual Link for Dual MEG Recordings

et al. 2015

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“…In [10], another framework to enable social viewing is proposed. It makes use of an IDMS-enabled engine developed in [11] to enable shared media consumption of document-based media.…”

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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“…The logged results can be used in the analysis to derive task scores as objective metrics [2]. We also integrated VMC-TB with ambulant [4] for synchronized multimedia sharing (R7). The QuestionnaireModule displays questionnaires defined in a simple document format, saves results and provides live feedback to the OC (R8).…”

Section: Video-mediated Communication-testbedmentioning

confidence: 99%