Broadcasting and High Bandwidth Network Applications – Pushing the Technology Michael Wellings Director of Engineering www. researchchannel. org
Research. Channel § Consortium of Institutes of Higher Education and Research § National Academies § Corporations § www. Research. Channel. org
Participants • Baylor College of Medicine University of Chicago CENIC • Carnegie Mellon University of Colorado Internet 2 • Duke University of Hawaii National Academies • George Mason University of Houston National Academy of Engineering • Georgia Institute of Technology University of Maryland-College Park National Academy of Sciences • Johns Hopkins 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 R 1 edu. org • Massachusetts Institute of Technology • National University of Singapore University of Virginia • Oregon Health and Science University of Washington Research Centers: 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
Research. Channel 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 Research. Channel 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, MPEG 2@ML Desktop HD client @ 19. 2 mbps MPEG 2@HL Applications for our Radio/TV Ops Digital. Well 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, Giga. POP Services • Pacific Northwest Giga. POP
Network Engineering • Real-time applications • High data rates • Sensitivity to loss, packet re-ordering, jitter • Cross boundaries
Packetized SMPTE 292 M @ 1080/60 i • 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 Video. Pump and custom Research. Channel software • HDCam Encode and Decode • Demonstrated to the Broadcast Industry at NAB 2000 in the SONY Booth
Application Centric Qo. S • 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
Research. Channel 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. – – Research. Channel, 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 • Research. Channel, UWTV – Automated Encoding • Dub time SONY MAV capture 50 mbps i-frame MPEG 2 4: 2: 2 • Transcode farm – Flipfactory, Virage • 1300+ hrs of SD 5. 6 mbps MPEG 2@ML – Broadcast Scheduling Integration • Protrack, DW metadata -> Dynamic web schedule • Integrated with DW On-Demand library – SD MPEG 2@ML multicast • International rebroadcast support – http: //www. researchchannel. org
Application: KEXP-FM • AES Infrastructure • Live Broadcast Stream – Uncompressed 1. 4 mbps – 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 – MPEG 2@ML 5. 6 mbps – WM @ 56 kbps, 256 Kbps, 1300 Kbps • Video Streaming - WM – 28. 8 – 100 kbps – 200 kbps – 1300 kbps
High-End Applications: Technology Demonstrations
i. Grid 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 259 M/IP joint project with Internet 2 – announced today at Internet 2 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 – Info@researchchannel. org – wellings@cac. washington. edu
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