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The advent of affordable 3D capture and display hardware is making volumetric videoconferencing feasible. This technology increases the immersion of the participants, breaking the flat restriction of 2D screens, by allowing them to collaborate and interact in shared virtual reality spaces. In this paper we introduce the design and development of an architecture intended for volumetric videoconferencing that provides a highly realistic 3D representation of the participants, based on pointclouds. A pointcloud representation is suitable for real-time applications like video conferencing, due to its low-complexity and because it does not need a time consuming reconstruction process. As transport protocol we selected low latency DASH, due to its popularity and client-based adaptation mechanisms for tiling. This paper presents the architectural design, details the implementation, and provides some referential results. The demo will showcase the system in action, enabling volumetric videoconferencing using pointclouds. CCS CONCEPTS • Information systems → Multimedia streaming; • Humancentered computing → Interaction paradigms; • Networks → Network protocols.

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In recent years, audio-visual distribution over Internet has witnessed the growing usage of HTTP based delivery systems. While these systems have their drawbacks for some use-cases, they also have many advantages, the most important one being reusing the existing delivery infrastructure such as HTTP servers, proxies and caches. The MPEG group has started the standardization of the Dynamic Adaptive Streaming over HTTP (DASH) of major transport formats, MPEG-2 TS and ISO Base Media File, and mostly focuses on audio, video and subtitle formats. We believe Rich Media services have a role to play in this landscape, as a presentation layer for the audio-visual content first, but also as a dedicated media in the DASH content for realtime media-synchronized interactive services. In this paper, we present a study on usages of DASH for Rich Media Services.