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High Definition Video Real Time Multipoint Distribution

High Definition Video Real Time Multipoint Distribution. Lud e k Matyska CESNET & Masaryk University Brno Czech Republic. What.

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High Definition Video Real Time Multipoint Distribution

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  1. High Definition Video Real Time Multipoint Distribution Ludek Matyska CESNET & Masaryk University Brno Czech Republic

  2. What • Use HD (1920x1080, 60 fields (half frames) per second) to capture, store and distribute high quality video material for scientific and educational purposes – streaming • Use of HD to support high quality videoconferences • Research at multipoint high bandwidth stream distribution using overlay user controllable networks iGrid2005, San Diego, CA

  3. iGrid2005 Demo Setup • HD Multipoint Videoconference (CZ101) • Three participating sites: • Masaryk University Brno, Czech Republic • Louisiana State University, Baton Rouge, Louisiana • UCSD, San Diego iGrid2005, San Diego, CA

  4. How (Video) • Capture • HD camera SONY HVR-Z1E or HDR-FX1 • AJA HD10A for analog (YUV) to SDI and DVS Centaurus for hw capture of HD-SDI • Encapsulation into IP using custom UltraGrid-based software, Chelsio 10Gb NICs (jumbo frames) • No compression, data stream of 1.5Gbps • Projection: • Decapsulation (including 10b to 8b color reduction, AMD64 optimized deinterlace implementation) iGrid2005, San Diego, CA

  5. Video Configuration and Network iGrid2005, San Diego, CA

  6. How (Network) • Virtual overlay network • Stream replication point(s) with software or hardware replication unit • User controllable packet reflector • 10 GE NIC from Chelsio • Dual AMD64 machine with 4GB RAM (BSD clone) • Only duplication of the 1.5 Gbps stream • Optical splitter considered • Access to the L1 needed iGrid2005, San Diego, CA

  7. Reflector Setup iGrid2005, San Diego, CA

  8. Why • HD provides good compromise between sufficient details in the picture and the price of necessary equipment (cameras and projection/display systems) • Videoconferencing • Interest by physicians for educational purposes • Surgery capture • Streaming access to lectures and other edu material • High bandwidth to create challenge for network development iGrid2005, San Diego, CA

  9. Problems • Instability of dual AMD Opteron machines with 10GE Chelsio cards (T110/T210) • No full control over the newtork • Unexpected glitches out of our control • Still too high latency – still >500ms • Network gave 178ms between Brno and San Diego compared to the theoretical 50ms • Even uncompress video processing adds at least 100ms (both sides) • Replication units iGrid2005, San Diego, CA

  10. Partners and People CESNET/Masaryk University Brno: Luděk Matyska, Petr Holub, Miloš Liška, Lukáš Hejtmánek, Jiří Denemark, Tomáš Rebok, Eva Hladká CESNET: Jan Radil, Stanislav Šíma, Jan Gruntorád Louisiana State University: Andrei Hutanu, Ravi Paruchuri, Brian Ropers-Huilman, Ed Seidel iGrid2005, San Diego, CA

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