Design of the VoD System for High-Quality Video and Audio with D1 over IP

Internet broadcasting and streaming contents have recently been attracting a great deal of attention, despite their inadequate content quality. The demand for such services is projected to continue to increase in the near future, and streaming contents are expected to play a major role among applications for the next-generation Internet [1] [2]. With the further development of DVTS, it will certainly be possible to provide high-quality content through the Internet [3] [4] [5]. On the other hand, digital broadcasting and compressed audio/video such as DVD (MPEG2) and DV are considered high-quality services and have become increasingly popular at home. However, they are not high in quality compared with the non-compressed audio/video used in professional applications such as commercial broadcasting and movies. As it becomes increasingly difficult to draw a distinction between communication and broadcasting, and the high-speed Internet gains in popularity among both content providers and home users under the circumstances described above, the need for higher-quality contents will grow and technologies for providing such high-quality contents will become essential. We have therefore developed a transmission technology for super-high-quality digital video and multi-channel audio that can transmit data on a real-time basis. It employs the IP technology that is a core technology in the Internet world. This paper describes the technological aspects of and future prospects for this super-high-quality media transmission.