1. DongHoon Yi 2005/ 1/ 26 dhyi@netmedia.gist.ac.kr Networked Media Laboratory Dept. of Information & Communications Gwang-Ju Institute of Science & Technology APAN 19 th Bangkok Meeting Sub-Gbps Uncompressed HDTV over IP Trials

2. - 2 - Contents Uncompressed HD Streaming system Decompressed-Live HDV (221Mbps) Uncompressed-Stored HDTV (885Mbps) Compressed HDTV (SMPTE 305M, 270Mbps) Streaming Uncompressed HDTV (SMPTE 274M,1.2Gbps) Streaming

3. - 3 - Uncompressed HD streaming system

4. - 4 - Decompressed-Live HDV (221Mbps) Goal: Pre-experiments of several hundreds Mbps HDTV stream Too expensive HDTV camera Pre-development of uncompressed HDTV system Feature 1280x720 progressive, 30fps YV12: Planar YUV format, 8-bpp 2x2 U and V planes UDP Socket Tuning Burst sending and then rest Sender - Non-blocking, Big Sending Buffer Blocking mode can avoid packet loss in sending buffer  Performance is poor (Data loss between sender module and decoder module) Better performance by Non-blocking mode Avoid packet loss by big sending buffer Receiver - Blocking, Big Receiving Buffer Non-blocking receiving socket waste computation time to check whether it receive or not.

5. - 5 - Decompressed-Live HDV (221Mbps) Implementation (based on Windows DirectX) Experiments KAIST  GIST IPv6 VLAN 220~270Mbps Client Server

6. - 6 - Uncompressed-Stored HDTV (885Mbps) System Details

7. - 7 - Uncompressed-Stored HDTV (885Mbps) H/W Issues NIC - Different NIC shows different performance Intel 1Gbps NIC showed the best performance Disk read up speed Old type of DISK I/O can be bottleneck LAN cable Cat6 is better than Cat5 S/W Issues Burst streaming By giving some delay inter-packet, burst packet sending is fixed. Other Issues Acquisition of 720p video file. Generated by 3D production tool (Alias Maya) Future works 1080i supports Multi-channel 1080i streaming

8. - 8 - Uncompressed-Stored HDTV (885Mbps) Demonstration KOREN Workshop (Dec. 3th 2004)

9. - 9 - Compressed HDTV (SMPTE 305M, 270Mbps) Streaming Demonstration between Korea and Barcelona System information ResearchChannel’s S/W Resolution: 1080i Compressed by SONY HDCAM Codec Transport format: SMPTE 305M(SDTI) Sender Workstation with Gigabit NIC Stored HD file Receiver Decoder Box SONY HDCAM Decoder, Demultiplexer, D/A Converter Workstation with Gbit NIC, SDTI Interface card(VideoPump) Display device

10. - 10 - Compressed HDTV (SMPTE 305M, 270Mbps) Streaming International Lightpath provisioning

11. - 11 - Compressed HDTV (SMPTE 305M, 270Mbps) Streaming System Specifications Audio AMP, Mixer Audio D/A Converter Video D/A Converter Demuxer, Decoder Audio Speaker 270Mbps Stream Receiver System PDP Display

12. - 12 - Uncompressed HDTV (SMPTE 274M,1.2Gbps) Streaming Developed in GIST HD Contents SONY HDCAM, SMPTE 274M standard 1920X1080/59.94/I, 1125 lines per frame (Active line 1080 lines) Server NAS (Storage system), Workstation with GbE. Client Workstation with GbE. VideoPump, SONY Demultiplexer and D/A Converter, Display device (PDP)