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					MULTIMEDIA TECHNOLOGY

INTRODUCTION TO MULTIMEDIA
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History Of Multimedia

                                                   • What can we say about the
                                                     evolution of media that has
                                                     taken place for thousands of
                                                     years?
                                                   • Since the dawn of time,
                                                     people have had the need to
                                                     communicate with one
                                                     another
                                                   • This created what we called as
                                                     communication media


    http://www.december.com/present/mediaev.html
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Multimedia

The notion of Multimedia
Consists of two words:
Multi (Latin)= many; much;
Medium (Latin) = An intervening substance through
which something is transmitted or carried on.
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What is Multimedia?
• Multimedia can be any combination of text, graphics,
  sound, animation and video, to effectively
  communicate ideas to users delivered by computer
  or any other electronic devices.
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What is Multimedia? (Other definition)
• ‘Multimedia is any combination of text, art, sound,
  animation, and video. It is delivered to the user by
  electronic or digitally manipulated means. A
  multimedia project development requires creative,
  technical, organizational, and business skills.’

                                                          Tay Vaughan
                                    Multimedia : Making it work 7th Ed.
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What is Multimedia? (Other definition)
• ‘“Multimedia is the presentation of a (usually
  interactive) computer application, incorporating
  media elements such as text, graphics, video,
  animation and sound on computer.”
                                        Stephen McGloughlin
                                 Multimedia: Concepts & Practice
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Multimedia Building Block



                 Digital
              environment


                  USER




         Elements of Multimedia
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Why Multimedia?
• Ease of use
• Intuitive Interface
• Immersive experience
• Self-paced interaction and better retention
• Better understanding
• Cost effectiveness
• More fun = greater efficiency
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Multimedia has a number of distinct and unique
features, including:

Based on Edgar Dale (Cone Of Learning), on average, people
remember:

10% of what they read,
20% of what they hear,
30% of what they see,
50% of what they hear and see,  multimedia approach

multimedia rich elements, multi-sensory delivery system can
facilitate greater retention of new knowledge
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Types of Multimedia
• Linear Multimedia
 ▫ Users have very little control over the
   presentation

• Nonlinear/Interactive Multimedia
 ▫ Users dictate the flow of delivery. User
   control the flow of the show.
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Types of Multimedia:
(1)Linear Multimedia
  ▫ The users sit back and watches the
    presentation
  ▫ The presentation normally plays from
    the start to end or even loops
    continually to present the information.
  ▫ A movie is a common type of linear
    multimedia
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Types of Multimedia:
(2)Interactive Multimedia
       The users control the delivery of elements – to
        control the what and when. Users have the ability
        to move around or follow different path through
        the information presentation.
       Advantage: complex domain of information can be
        presented.
       Disadvantage: users might lost in the massive
        “information highway”.
       Useful for: information archive (encyclopedia),
        education, training and entertainment.
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What is a Multimedia Project?
• The software vehicle, the messages, and the content
  together constitute a multimedia project.
• A multimedia project shipped to end-users with or
  without instructions is called a multimedia title.
• A project can also be launched on the Web.
• Authoring tools are used to merge multimedia
  elements into a project.
• These software tools are designed to manage
  individual multimedia elements and provide user
  interaction.
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Delivering and Using Multimedia
The primary media for delivering multimedia projects
 are:
  ▫ Compact disc read-only (CD-ROM).
  ▫ Digital Versatile Disc (DVD) / Blu-ray Disc
• Multimedia Projects can also be delivered online
  (webs) and through PDAs/Hand-held Devices
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Delivering and Using Multimedia :
(1) CD-ROM
• CD-ROM is the most cost-effective distribution
  medium for multimedia projects.
• It can contain up to 80 minutes of full-screen video
  or sound.
• CD burners are used for reading discs and converting
  the discs to audio, video, and data formats.
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Delivering and Using Multimedia :
(2) DVD / Blu-ray
• Multilayered DVD technology increases the capacity of
  current optical technology to 18 GB.
• DVD authoring and integration software is used to create
  interactive front-end menus for films and games.
• DVD burners are used for reading discs and converting
  the disc to audio, video, and data formats.
• BD – Blu-ray disc (Blu-ray Disc Association BDA)
   ▫ next-generation format for high-definition video and high-density data.
   ▫ A single-layer disc can fit 23.3, 25, or 27 GB (enough for approximately four hours
     of high-definition video with audio)
   ▫ supports 25GB for one layer, 50GB for two and 100GB for four
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Delivering and Using Multimedia
(3) Online
• Multimedia can be delivered online
• Copper wire, glass fiber, and radio/cellular
  technologies also serve a means for delivering
  multimedia files across a network
• Online uses include:
     Books and magazines, Education
     Movies, Entertainment
     News and weather
     Maps
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Application of Multimedia
 Business and Industry
 •   Virtual Shopping
 •   Desktop Videoconferencing
 •   Real estate
 •   Training
 •   Electronic Brochures
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Application of Multimedia
 Entertainment

 •   Morphing
 •   Superimposition
 •   Animation
 •   Toy Story
 •   Virtual Reality
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Application of Multimedia
 Education

 •   Cognitive vs Behavior Psychology
 •   Art
 •   Biology
 •   Chemistry etc.
 •   WebCt and online delivery
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Application of Multimedia
 Entertainment
     • Cinema
         ▫   morphing
         ▫   Superimposition
         ▫   Animation
         ▫   Digital Recasting
     •   Video games
     •   Interactive Movies
     •   Virtual Reality
     •   Cyber-Sports
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Application of Multimedia
 Government and Politics
 •   Kiosks
 •   Electronic Town Meetings
 •   Internet
 •   Warfare
 •   Virtual campaigning
 •   Consumer information
 •   Encyclopedia Resources
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Application of Multimedia
 Medicine and Nursing

 •   Medical Training
 •   Anatomy and Physiology
 •   Virtual Surgery
 •   Videoconferencing Network
 •   Online Resources
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Application of Multimedia
 Application Development Packages
 •   Presentation Packages
 •   Hypermedia Programs
 •   Animation and Multimedia Sequencing
 •   Authoring Systems
 •   World Wide Web
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Applications of Multimedia
Examples of Multimedia Applications:

•Digital video editing and production
systems
•Electronic Newspapers/Magazines
•Games
•Groupware
•Home shopping
•Interactive TV
•Multimedia courseware
•Video conferencing
•Video-on-Demand (VoD)
•Virtual reality
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Multimedia System Characteristics


• Multimedia systems must be computer controlled.
• All multimedia components are integrated.
• The interface to the final user may permit
  interactivity.
• Information must be represented digitally.
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Overlapping Technologies
 • Different branches of multimedia grow together
   because of new, upcoming multimedia technology
   and applications.
 • Two challenges lie ahead:
  ▫ Timing requirements (synchronization etc.)
  ▫ Integration requirements (of different media types)
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Summary
• Multimedia is the combination of text, graphics,
  sound, animation and video, to effectively
  communicate ideas to users delivered by computer.
• Multimedia projects can be linear or nonlinear.
• Multimedia projects are often stored on CD-ROM or
  DVDs. They can also be hosted on the Web.
• Multimedia is widely used in business, schools,
  public places, and at home.
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Hardware
Vaughan’s One-way Rule
“Once you’ve tried it, you can’t go back”
(Vaughan, 2001)

Sullivan’s Observation
“I have never meet a hard drive I haven’t filled”
  (Sullivan, 1996)
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Platforms
• Mac
• PC
• Linux
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Connections
• Networks – Wireless or Wired?
  ▫ LANS
  ▫ WANS
• Servers
• SCSI –
  ▫ 80 Mbps
• USB
  ▫ USB 1.0 - 12 Mbps (supports 127 peripheral devices) 1996
  ▫ USB 2.0 – 480 Mbps (compatible with 1.1) 2000
• Firewire –
  400 Mbps to 800 Mbps (IEEE 1394) guaranteed rate good for
  video and real-time data
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Communication
 ▫ Modem – 56 Mbps
 ▫ DSL – 32 Mbps upstream and 32 Kbps to 1 Mbps
   downstream -20,000 ft.
 ▫ Cable – 2 Mbps
 ▫ T1 - A dedicated phone connection supporting data rates of
   1.544Mbits per second. A T-1 line actually consists of 24 individual
   channels, each of which supports 64Kbits per second.
 ▫ T3 - A dedicated phone connection supporting data rates of
   1.544Mbits per second. A T-1 line actually consists of 24 individual
   channels, each of which supports 64Kbits per second.
 ▫ Coaxial – 10 Mbps
 ▫ Fiber Optic - Gigabytes
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Memory and Storage
• Central Processor
  ▫   RAM vs ROM
  ▫   Zip & Hard Drives
  ▫   CD’s - Burners
  ▫   DVD’s +, -
  ▫   DVD Burners
 Memory

   Memory required to store a 5 by 7 inch
    snapshot with different precisions
Dots/inch resolution Bytes required for
of snapshot image     storage
                  100             1.05      Mb
                  300             9.45      Mb
                  600              37.8     Mb
                 1200            151.2      Mb
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Input Devices
•   Multimedia Keyboards
•   Mice, Trackballs, Touch screens
•   Magnetic Card Encoders and Readers
•   Graphic Tablets
•   Scanners
•   OCR Devices
•   Infrared Remotes
•   Voice Recognition Systems
•   Digital Cameras
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Output Devices
•   Audio Devices
•   Amplifiers and Speakers
•   Monitors
•   Video Devices
•   Projectors
    ▫ Luminance
    ▫ Chrominance
• Printers
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Multimedia Accessories
• Video Overlay: allows a computer to display common video
  sources including video cameras, VCR’s and video disc
  simultaneously.
  ▫ Multiple inputs, frame grab, TV tuner, Video for Windows, Memory
    conflicts, Video adapter compatibility
  ▫ Check PC World
• Digital Video
• TV Tuner
• MIDI - MIDI kit by Midisoft
  ▫ www.rolandus.com laptops
  ▫ www.midisoft.com
• VideoDisc
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Software that enables Multimedia
• System Software
  ▫ OS
  ▫ Utilities
  ▫ Networking
• Development Software
  ▫   Graphics
  ▫   Sound
  ▫   Text
  ▫   Web Developing
  ▫   Multimedia Authoring
• Delivery Software
  ▫ Stand-Alone Programs
  ▫ Players
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System Software
• Written specifically to control its CPU
• Unique to the CPU brand and model
• Written in or translated into the machine language of
  the CPU
• Used to run computer
• Utilities
  ▫   To play sound
  ▫   Print the screen image
  ▫   Eventually became operational extensions of OS
  ▫   Important consideration when choosing OS
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Painting and Drawing Tools
Most multimedia authoring programs, at least for now,
  import bitmaps.
• Painting Software (bitmap)
  ▫ PhotoShop, PicturePublisher, and Fractal Designer
• Drawing Software (vector)
  ▫ CorelDraw, FreeHand, Illustrator, Designer, and Canvas
  ▫ Macromedia’s Flash vector
  ▫ Fireworks
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Image-editing Tools
Are specialized and powerful tools for enhancing and
  retouching, existing bitmapped images
• PaintShop Pro & PhotoShop
  ▫ Plug-ins
       Vertigo’s HotTEXT lets you turn text into 3-D objects
       EyeCandy
       Kai’s power tools
       Xaos tool’s paint alchemy
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3-D Modeling
• Extreme 3-D, 3d/fx, AutoDesk’s 3D Studio Max,
  StrataVision’s 3D, Infini-D, etc.
• Bryce
• Poser
• Examples, anyone?
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Sound Applications
   • Sound Editing
     ▫   Sound Recorder
     ▫   Sound Forge
     ▫   SoundEdit
     ▫   MIDI
   • Sound Playback
     ▫   Windows Media Player
     ▫   QuickTime
     ▫   Real Player
     ▫   WinAmp
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Animation, Video and Digital Movie Tools
    Animation and the perception of motion
    QuickTime, Microsoft’s video for windows, Adobe
      Premiere,
    Morphing
    Video formats avi, mov, mpeg
    Movie editors – decoders – Targa boards 30+, Adobe after
      effects, Pinnacle boards
    Compression, Image quality, Compress/decompres speed
    Lossless or lossy
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Linking Multimedia Objects
DDE & ole
Office suites
Presentation tools
  Astound
  Persuasion
  PowerPoint
  DeltaGraph professional
  Harvard graphics
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Networking Software
• Network Hardware Protocols
  ▫ Ethernet
  ▫ Token Ring
  ▫ ATM
• Message Passing Protocols
  ▫   HTTP
  ▫   SMTP
  ▫   AppleTalk
  ▫   TCP/IP
  ▫   IPX/SPX
  ▫   SNA
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Web Development
• Authoring Tools
  ▫ Microsoft FrontPage
  ▫ Macromedia’s Dreamweaver
  ▫ Adobe’s GoLive
• Languages
  ▫ JavaScript
  ▫ Visual Basic
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Helpful Accessories
• Screen Grabber
 ▫   PaintShop Pro
 ▫   Capture
 ▫   SnapPro
 ▫   Hijaak 95

				
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