iGrid2005 Panel High Resolution Streaming Media MA

Information about iGrid2005 Panel High Resolution Streaming Media MA

Published on May 2, 2008

Author: Lindon

Source: authorstream.com

Content

High Definition Video Real Time Multipoint Distribution:  High Definition Video Real Time Multipoint Distribution Ludek Matyska CESNET & Masaryk University Brno Czech Republic What:  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 Demo Setup:  iGrid2005 Demo Setup HD Multipoint Videoconference (CZ101) Three participating sites: Masaryk University Brno, Czech Republic Louisiana State University, Baton Rouge, Louisiana UCSD, San Diego How (Video):  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) Video Configuration and Network:  Video Configuration and Network How (Network):  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 Reflector Setup:  Reflector Setup Why:  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 Problems:  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 Partners and People:  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

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