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Broadcasting and High Bandwidth Network Applications – Pushing the Technology Michael Wellings Director of Engineering www.researchchannel.org ResearchChannel Consortium of Institutes of Higher Education and Research National Academies Corporations www.ResearchChannel.org Participants • Baylor College of Medicine University of Chicago CENIC • Carnegie Mellon University University of Colorado Internet2 • Duke University University of Hawaii National Academies • George Mason University University of Houston National Academy of Engineering • Georgia Institute of Technology University of Maryland-College Park National Academy of Sciences University of North Carolina National Institutes of Health University of Pennsylvania National Institute of Standards and Technology University of Southern California National Sea Grant College Program University of Texas -Austin R1edu.org • • Johns Hopkins University Massachusetts Institute of Technology • National University of Singapore University of Virginia • Oregon Health and Science University of Washington Research Centers: University University of Wisconsin-Milwaukee IBM Corporation • Princeton University Vanderbilt University Sony Electronics Inc. • Rice University Virginia Tech Vulcan • Stanford University • Tufts University • University of Alaska-Fairbanks Yale University ResearchChannel Goals – Create a recognized global media presence for research activity – Provide a high-quality and accessible resource for research information – Encourage collaborations and technology experiments among ResearchChannel participants to develop new methods of distribution Viewership – 7 Million on Echostar’s DISH 500 Network – 6.4 Million on Cable Systems in 19 States – 35,000 requests for web pages, webcasts, and on-demand files fulfilled per month • Viewership from around the world Topics: • • • • • • • High-quality media using high speed networks Content delivery applications V.O.D. interface for HD, MPEG2@ML Desktop HD client @ 19.2mbps MPEG2@HL Applications for our Radio/TV Ops DigitalWell Media library “Convergence” and the future High Quality Media delivery using high-speed networks • http://www.researchchannel.org/inside/pro jects/ Network Engineering • Jan Eveleth • Manager, GigaPOP Services • Pacific Northwest GigaPOP Network Engineering • Real-time applications • High data rates • Sensitivity to loss, packet re-ordering, jitter • Cross boundaries Packetized SMPTE 292M @ 1080/60i • Raw HDTV/IP – single UDP flow of 1.5 Gbps – Project of USC/ISI East, Tektronix, & UW, (DARPA support) – 6 Jan 2002: Seattle to Washington DC via Abilene • Single flow consumed 60% of backbone bandwidth – 18 hours: no packets lost – 15 resequencing episodes – Experiment repeated Nov 2002 @ SC’02 UW Seattle to Denver SONY HDCam/IP • SDTI capture using Optibase VideoPump and custom ResearchChannel software • HDCam Encode and Decode • Demonstrated to the Broadcast Industry at NAB2000 in the SONY Booth Application Centric QoS • Classic Internet architecture - have applications assume responsibility for quality • Applications should – Utilize error correction techniques – Adapt to changing network conditions – Provide user-visible telemetry • Fortunately, all of these are a natural fit for streaming media… Error Correction • • • • • Should cope with intermittent problems Forward Error Correction Buffer and retransmit Deal with packet re-ordering Evaluate latency/buffering design points ResearchChannel HD/IP Futures • • • • • • FEC Improved diagnostics Low latency ( < .5 sec) Multicast Desktop client VOD Back end Engineering • Jim Deroest • Director of Streaming Media Development • Original focus broadcast-streaming integration. – – – – ResearchChannel, UWTV, KEXP Automation: encode, ingest, metadata, schedule, deliver Scalable standard def, high def, uncompressed streams Support commodity bit rates and formats • Focus expanded to include institutional collections – High-quality and accessible resources to research information. – Educational outreach – Interoperate with other digital repositories • Why quality matters … Webcast and Video On Demand • Hours Viewed Increases 200% since Jan 2002 • Breakout by Bandwidth Average Viewing Time • Duration longer for VOD, higher bandwidths Backend Diagram Insert diagram image - mass store system Application: Television • ResearchChannel, UWTV – Automated Encoding • Dub time SONY MAV capture 50mbps i-frame MPEG2 4:2:2 • Transcode farm – Flipfactory, Virage • 1300+ hrs of SD 5.6mbps MPEG2@ML – Broadcast Scheduling Integration • Protrack, DW metadata -> Dynamic web schedule • Integrated with DW On-Demand library – SD MPEG2@ML multicast • International rebroadcast support – http://www.researchchannel.org Application: KEXP-FM • AES Infrastructure • Live Broadcast Stream – Uncompressed 1.4mbps – Commodity bit rates • Archived Live Broadcast – 2 weeks, all formats • Real-time Broadcast Playlist, CDID – Dynamic web update integrated with DJ console – Archived with live broadcast • http://kexp.org Media Service Data Rates • VOD – MPEG2@ML 5.6mbps – WM @ 56kbps, 256Kbps, 1300Kbps • Video Streaming - WM – 28.8 – 100kbps – 200kbps – 1300kbps High-End Applications: Technology Demonstrations iGrid 2002 - Video Across the Atlantic • International Partnerships New Projects – MPEG-2 MP@HL ATSC delivery • Desktop client for VOD – Prospects for Interactivity – SONY HDCam on-demand – SMPTE 259M/IP joint project with Internet2 – announced today at Internet2 Spring Meeting – Possible multicast applications@ high bit rates – UW Medical Surgery Pavilion – APAN 2003 – Busan, Korea The End • For more information: – www.researchchannel.org Or write – [email protected] – [email protected]