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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

Streaming Video

by

Alan Barker

Antony Voznesensky

Chris Harris

what is streaming
What is Streaming?
  • Real-time transmission of video + audio signals over the Internet
  • CNN sample stream
benefits of streaming
Benefits of Streaming
  • Companies
  • Consumers
  • Academics
consumers
Consumers
  • HDTV
  • Digital Cinema
  • Video on demand
digital tv

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.”

advantages of digital tv
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.
interactive tv
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
things inhibiting us from having full digital television with all its wonderful capabilities
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
regulations of digital tv
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.

future limitations
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.

companies
Companies
  • Video conferencing
  • Content delivery – cheaper, faster, more effective
  • B2B
the digital pocket pc

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
benefits and limitations
Able to play movies

Able to play video e-mail

Able to take digital pictures

Unable to record digital videos

Benefits and Limitations
academics
Academics
  • Video on demand
  • Distance learning
  • Prerecorded
prerequisites
Prerequisites
  • Network decongestion
  • 24/7 availability and reliability
  • VHS or higher quality
network decongestion
Network Decongestion
  • WAN Backbone
  • Metro (MAN)
  • Local Loop
dwdm for wans
DWDM for WANs
  • Backbone technology
  • 400 Gb/s vs. 20 Gb/s non-DWDM
  • Multiple channels
    • 1,400 nm spectrum or band
  • Switching
slide21
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
local loop
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
dsl deployment growing
DSL Deployment Growing

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

dsl vs cable
DSL vs. Cable

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

reliability availability
Reliability/Availability

Source: Digital Island (http://www.digitalisland.net/services/streaming.shtml)

  • Global reach
  • 99.9% uptime guarantee
  • Quality of service
  • Redundancy
  • Professional staff
quality of the streams
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
mpeg 1
MPEG-1
  • First to come out - 1992.
  • 352 x 240 = standard TV, VHS quality
  • 1-3 Mbps – DSL, cable, T1
  • Prevalent in corporate LANs
mpeg 2
MPEG-2
  • DVD, set-top boxes, HDTV
  • up to 100Mbs
  • 720 x 480 full-screen resolution
  • Bitstream scalability
  • Studios and cable companies
mpeg 4
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
slide30

MPEG-4: What’s possible

Source: Overview of the MPEG-4 Standard @http://www.cselt.it/mpeg/standards/mpeg-4/mpeg-4.htm

slide31

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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