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Sub-Gbps Uncompressed HDTV over IP Trials

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

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Sub-Gbps Uncompressed HDTV over IP Trials

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

  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. Uncompressed HD streaming system

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

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

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

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

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

  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)

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