Multi-party collaborative environments based on AG (Access Grid) are extensively utilized for distance learning,
e-science, and other distributed global collaboration events. In such environments, A/V media services play
an important role in providing QoE (quality of experience) to participants in collaboration sessions. In this
paper, in order to support high-quality user experience in the aspect of video services, we design an integration
architecture to combine high-quality video services and a high-resolution tiled display service. In detail, the
proposed architecture incorporates video services for DV (digital video) and HDV (high-definition digital video)
streaming with a display service to provide methods for decomposable decoding/display for a tiled display
system. By implementing the proposed architecture on top of AG, we verify that high-quality collaboration
among a couple of collaboration sites can be realized over a multicast-enabled network testbed with improved
media quality experience.
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