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Streaming Video

Streaming Video by Alan Barker Antony Voznesensky Chris Harris What is Streaming? Real-time transmission of video + audio signals over the Internet CNN sample stream Benefits of Streaming Companies Consumers Academics Consumers HDTV Digital Cinema Video on demand Television

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Streaming Video

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  1. Streaming Video by Alan Barker Antony Voznesensky Chris Harris

  2. What is Streaming? • Real-time transmission of video + audio signals over the Internet • CNN sample stream

  3. Benefits of Streaming • Companies • Consumers • Academics

  4. Consumers • HDTV • Digital Cinema • Video on demand

  5. Television The American Past Time:

  6. Digital TV “As the 500 channel universe becomes a reality, broadcasters are looking for ways to ensure viewer retention and enable new viewer acquisition. Digital television allows them to accomplish this by not only delivering better video and audio quality to their viewers, but by also allowing them to differentiate their service offerings through combining interactive television applications with traditional television programming content.”

  7. The digital reception of a program on a television monitor. What is Digital TV?

  8. Advantages of Digital TV • Greater Picture Quality from digital signal -HDTV • Watch any program at any time, without interruptions. TIVO • Interactive TV--Internet Capabilities, E-Commerce opportunities from your TV Ultimate TV.

  9. 2.2 million households are projected to have the interactive TV service by the end of the year [Forrester Research]Nearly one-quarter of all U.S. households will be using Interactive Television by 2004 [Forrester Research] Interactive television advertising revenues are expected to reach $11 billion in the U.S. by 2004 [Forrester Research] Interactive television advertising revenues are expected to reach $11 billion in the U.S. by 2004 [Forrester Research] Three-quarters of all television commercials will be interactive within five years [Forrester Research] Interactive TV Interactive TV

  10. Things inhibiting us from having Full Digital Television with all its wonderful capabilities. • Failure to yet develop “the magic box” • Companies must combine Technologies to get to this Level • AOL time Warner • Microsoft – Ultimate TV • Playstation

  11. Regulations of Digital TV • May 2002, all television stations are supposed to be able to transmit digital quality. • 2006, all Analog Signals in the United States are to be cut off entirely. By this time all Americans must have a Digital Television, or a digital converter box, otherwise America’s favorite past time, TV, will come to an end.

  12. Future Limitations • With the Laissez faire economics this conversion will probably not take place as quickly as government would like. • TV stations are not willing to go to digital because, consumers do not have capabilities to receive digital transmissions. • Consumers, are not willing to purchase costly digital setups because there is not enough use for them. Chicken and the Egg.

  13. Companies • Video conferencing • Content delivery – cheaper, faster, more effective • B2B

  14. Price $169.99 • take pictures on your handheld • fits in your memory card slot • for hp jornada 520, 525, 547, 548 The Digital Pocket PC

  15. Able to play movies Able to play video e-mail Able to take digital pictures Unable to record digital videos Benefits and Limitations

  16. Academics • Video on demand • Distance learning • Prerecorded

  17. Prerequisites • Network decongestion • 24/7 availability and reliability • VHS or higher quality

  18. Network Decongestion • WAN Backbone • Metro (MAN) • Local Loop

  19. DWDM for WANs • Backbone technology • 400 Gb/s vs. 20 Gb/s non-DWDM • Multiple channels • 1,400 nm spectrum or band • Switching

  20. MANs • DWDM • Cisco ONS 15454 & 15327 optical transport platforms • Free Space Photonics • Up to 5km radius • Capable of 2.488 Gbps transfer rate • Extremely secure • Very small and easily installed

  21. Cable 2 Mbps Shared xDSL SDSL (2 Mbps) ADSL (7Mpps/1.5Mbps) RADSL (rate adaptive) VDSL (55 Mbps) Satellite Limited bandwidth 10 Gigabit Ethernet (10GbE) Scheduled for 2002 DWDM compatible Consistent with LANs Reduced packet size – throughput Local Loop

  22. DSL Deployment Growing Source: Converge! Network Digest (http://www.convergedigest.com/DSL/numbers/totalDSL.htm)

  23. DSL vs. Cable Source: Converge! Network Digest (http://www.convergedigest.com/DSL/LastMileDSLNumbers.htm)

  24. Reliability/Availability Source: Digital Island (http://www.digitalisland.net/services/streaming.shtml) • Global reach • 99.9% uptime guarantee • Quality of service • Redundancy • Professional staff

  25. Quality of the Streams • Uncompressed video = 240Mbps • MPEG: • The most popular codec for streaming apps • Free open end standard • Generally “better-quality video than competing formats” (Webopedia, MPEG). • Developed by the Moving Pictures Experts Group, an ISO subcommittee

  26. MPEG-1 • First to come out - 1992. • 352 x 240 = standard TV, VHS quality • 1-3 Mbps – DSL, cable, T1 • Prevalent in corporate LANs

  27. MPEG-2 • DVD, set-top boxes, HDTV • up to 100Mbs • 720 x 480 full-screen resolution • Bitstream scalability • Studios and cable companies

  28. Better compression rates than MPEG-1 or MPEG-2 at the same bit rates Totally scalable Increased fault tolerance Multiple layers Interactive content Enormous flexibility 5-384kbps for slow LANs and wireless < 2Mbps for film and TV Up to 38Mbps for broadcast services MPEG-4

  29. MPEG-4: What’s possible Source: Overview of the MPEG-4 Standard @http://www.cselt.it/mpeg/standards/mpeg-4/mpeg-4.htm

  30. Conclusion: The Future of Streaming Video • Cuts cost, shortens the distribution channel, and brings greater flexibility to rich media. • Available now but will grow in popularity with improvements in network, TV, and mobile technology • Benefits business, consumers, and academics

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