The recent growth in available network bandwidth envisions the wide-spread use of broadband applications such as uncompressed HD-SDI over IP. These cutting-edge applications are also driving the development of a media-oriented infrastructure for networked collaboration. This paper introduces imcast, a high-quality digital media platform dealing with uncompresed HD-SDI over IP, and discussed its internal architecture in depth. imCast mainly provides cost-effective hardware-based approaches for hi