High Quality Video Broadcast System for Next Generation

High Quality Video Broadcast System for Next Generation Internet Kazunori Sugiura(CRL) Motonori Nakamura(Kyoto Univ. ) Akihiko Machizawa(CRL)_ Takahiro Kikuchi(RCAC, TDI) Naoto Morishima(NAIST) Shin-ichi Nakagawa(CRL) With cooperation of: WIDE Project

Characteristics of Internet • best effort basis network • Network Characteristics… – Jitter – Network Packet losses – Congestion Control – affects Stream media(Stream packet)

Current Internet Video Broadcasting System • Limitation in Network Bandwidth • Massive compression of Video and Audio data • Realtime Teleconferencing System – High cost equipment

Requirements(Request) • High Quality Picture • NTSC Quality Video • High Quality Sound • CD Quality Audio • Delayless transfer • low cost solution • Mid range bandwidth( 10 Mbps and higher )

Required Network Bandwidth is expanding Amount of network bandwidth(Byte) 1 G 100 M 1 M 100 K 1990 1994 1998 2002 2004 (Year)

Development of Network Bandwidth • Use of Mid-High speed network becomes realistic • appearance of high-speed networks – ATM – WDM • High Speed LANs – 100 Base. T, Gigabit Ethernet

Internet Live Broadcasting System Internet PC Router

Internet Live Broad and Multi-cast System PC Monitor Wireless Mic. Audio Selector Keyboard Video Input DV Video recorder Monitor, Antenna Real. Server DV Video Recorder Real Client Video Selector NTSC PAL SECAM RGB Scan Converter Main Power Supply Rack 1 Rack 2

Internet Connection from KRP(19990727) 2/166 NTT Atomis 7 M 2/166 Tokyo Univ. Megalink 1/166 Tokyo Univ. aa 03 Tokyo Univ. aal 3 0/166 1/166 KDD Atomis 7 M KDD Cisco 7507 1/166 Internet 3 F KRP Cisco 7206 1/155 3 F KRP Atomis 7 m KRP 24/155 ASTEM Atomis 7 m JGN FORE 1/166 24/155 Kyoto Univ. 7 m ATM Line 100 Base. TX Ethernet

Octets Network Traffic Time

Output Octets DV Conference System Network Traffic Time