1. Practical Video Conference Using the Internet Kazunori Sugiura Uhyo@sfc.wide.ad.jp

2. Outline: Video Conferencing system –What do we need to prepare? Network Infrastructure? Room Configuration? Visual and Audio accessibility? Power Supply Management?

3. Video Screen Monitor Audience Room DV Video Deck IEEE1394 DV to Internet PC NTSC Video Audio Router Camera Internet IP Remote Host Network Room DV Camera DV Video Deck Bi-directional communication IEEE1394 DV to Internet PC 100BaseT Full Duplex Ethernet Router 100BaseT Switch 100BaseT Switch 100BaseT Full Duplex Ethernet IEEE1394 S or RCA Video Stereo RCA Audio DV Camera

4. What We need? Network Availability Full 1/2 1/3 1/4 1/5 1/6 0 5 10 15 20 25 30 MBPS Frame Rate Audio Packet Video Packet

5. Video Encoding Plan 1: DV Camera with IEEE1394 port. Plan 2: Using Sony IEEE1394-NTSC Media Converter Interfaces: RCA Video RCA Audio S Video IEEE1394(iLink)

6. Requirements Network Availability –Full Duplex 100Base-T Ethernet –At minimum of 40 MBPS Bandwidth Video: –S or RCA Composite Video Audio: –Microphone, –Balanced or Unbalanced Input

7. What should we bring? PC: 450MHz Pentium II wit 128MB Memory NLX PCx2 IEEE1394 Cardx2 100BaseT Ethernet(Embedded inside PC)x2 Keyboardx1 Mousex1 PC Switcher with Cablesx1 LCD Display(VGA Display for PC)x1 Camera: Digital Video Camera(with IEEE1394 Interface)x2 Sony IEEE1394-Video Media Converterx3 Audio Video Options: Balance-Unbalance mixer:x1 RCA Audio Cables:x2 S Video Cables:x2 RCA Video Cables:x2 Canon Cables:x2 Network: 8 Port Ethernet Switchx2 Cat 5 Ethernet Cablesx2 Power Appliances: 115V to 100 V AC Converterx1

8. What we might need? For Audio and Video: Echo Canceller RCA to Canon Converter Cable Canon to RCA Converter Cable 3DFB Coaxial Cable( For custom cable requirements? ) Connectors:(which includes) RCA Male and Female Canon Male and Female Stereo Mini Pin Jacks Stereo Standard Pin Jacks Scan Converter: For Network Infrastructure: Debugging Note-PC with Ethernet PCMCIA Card: RJ45 Clamper and RJ45 Connector Cat 5 Cables MM Fiber( In case of Emergency ) SM Fiber ( In case of Emergency ) 100BaseFX to TX Repeater (2PCs ) For misc. Table Taps: Camera ( for recording results… etc.)

9. Option B If the network is unstable? Or not enough bandwidth for DV over IP? –We may have an option to Use Real Video? Use Netmeeting?

10. Details of Option B PC’s are dual bootable –FreeBSD 3.2 ( For DV Over IP ) –Windows 98 ( For Real-Video, etc. )

11. Planning Construct a home-page –Find a link from: http://www.sfc.wide.ad.jp/~uhyo/html/japan/STREAM/index.html