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What is Multimedia

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Consumer titles. Kids' books. Broadcast. TV programs. Others. Custom productions ... Movie metaphor. Can accept almost any bitmapped file formats ... – PowerPoint PPT presentation

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Title: What is Multimedia


1
What is Multimedia?
  • Dr H Batatia
  • School of Science and Technology
  • h.batatia_at_tees.ac.uk

2
Introduction
  • Computers
  • Capture, generate, store, retrieve, process,
    transmit, and present various digital media
  • They can also control processes e.g.,
  • analog audio and video playback systems
  • other processes...

3
What types of media?
  • Media refers to type of information
  • alphanumeric data, images, audio, video
  • Media may have time dimension
  • Two classes (based on time dimension)
  • static media
  • continuous media

4
Static media
  • No time dimension
  • contents and meaning independent of presentation
    time
  • e.g., alphanumeric data, graphics, still images

5
Continuous media
  • Have time dimension
  • meaning and correctness depend on rate of
    presentation
  • Include
  • animation, audio, video
  • Have intrinsic rate
  • 25 frames/s for video
  • audio (e.g., music)

6
Continuous media (contd.)
  • Changing the rate changes the meaning
  • The playback must be continuous at a fixed rate
  • Hence, the name CONTINUOUS MEDIA
  • Also called, ISOCHRONOUS MEDIA
  • time dependent

7
History
  • -gt 1894 Newspapers used graphics text
  • 1894 - First wireless by Gugliemo Marconi
  • 1945 - Memex by Bush
  • 1969 - Nelson Van Dam hypertext editor at Brown
  • 1976 - DARPA proposal Multiple Media
  • 1985 - Negroponte, Wiesner opened MIT Media Lab

8
Contd.
  • 1989 - World Wide Web at CERN by Tim Berners-Lee
  • 1990 - K. Hooper Woolsey, Apple Multimedia Lab,
    100 people
  • 1991 - Apple Multimedia Lab Visual Almanac,
    Classroom MM Kiosk
  • 1992 - First M-bone audio multicast on the Net

9
Contd.
  • 1993 - U. Illinois National Centre for
    Supercomputing Applications NCSA Mosaic
  • 1994 - Jim Clark and Marc Andreesen Netscape
  • 1995 - JAVA for platform-independent application
    development.

http//www.supelec.fr/docs/guide_61/guide.14.html
10
What is multimedia?
  • Linguistic
  • Any system handling more than one medium is
    called multimedia system
  • Accurately
  • Any system handling at least one continuous
    medium in digital form along with static media
  • Dont confuse multimedia and hypermedia

11
Hypertext vs. Hypermedia
  • Hypertext
  • text containing links to other texts. Invented by
    Ted Nelson around 1965.
  • Non-linear
  • Hypermedia
  • hypertext including also graphics, images, sound,
    video. Ted Nelson was also the first to use this
    term.
  • WWW is a hypermedia application

12
Hypermedia vs. Multimedia
  • Originally Multimedia designated documents that
    contain various media
  • Multimedia as industry meant CD-ROM
  • Today Multimedia include various applications
    that can be static or networked
  • Result of convergence between
  • computing, telecom, graphics, audio, video ,
    broadcast

13
Find out more about Hypertext and Hypermedia
http//www.supelec.fr/docs/guide_61/
14
Functions of a multimedia system
  • Capture, generate, store, retrieve, process,
    transmit, and present multimedia information
  • Two aspects
  • computing (processing, searching)
  • communications (capturing, transmission,
    presentation)
  • Earlier MM systems focused on communication.
    Current systems use more computing (recognition,
    restoration)

15
What is an Application?
  • MM application use of a system offering
    functions
  • Equivalent to service according to ITU
  • Application Program Software
  • Field of application Area where an application
    is used (medical diagnosis, education,
    marketing)
  • Equivalent to application according to ITU

16
ITU classification(centered on the service
providers)
17
Examining Media
  • Philosophy/Sociology of the medium
  • Psychology of the medium
  • Science of the medium
  • Technology of the medium
  • Engineering of medium
  • Art of the medium

18
Philosophy/Sociology of the medium
  • Why does it exists?
  • Where should it go?
  • What are its effects?

19
Psychology of the medium
  • What do you use it for?
  • What human behaviours are involved?
  • How do we exploit them these behaviours?
  • What are the limitations of these behaviours?
  • What techniques for its communication exist?

20
Science of the medium
  • How does it work?
  • How is it processed by human brains?
  • How can we improve it?

21
Technology of the medium
  • How do we capture/generate it?
  • How do we represent it?
  • How do we edit it?
  • How do we deliver?
  • How do we use it?

22
Engineering of medium
  • What is it physically?
  • What devices are required
  • To capture it?
  • To process it?
  • To store it?
  • To deliver it?

23
Art of the medium
  • how do we create effective design?
  • how does it impact the experience?
  • how does it impact the functionality?
  • how do we keep a balance between form and
    function?
  • how do we artistically exploit the medium?

24
Multimedia Development Roles
  • Management
  • Executive Producer
  • Producer
  • Project Manager
  • Design
  • Creative Director
  • Information Designer
  • Interface Designer
  • Tools/Content Production
  • Programmer
  • Artist

25
Development Process
26
Some Multimedia Applications
  • Advertising
  • Presentations
  • Marketing Tools
  • Education
  • Courseware
  • Kiosks
  • Simulations
  • Edutainment
  • Consumer titles
  • Kids' books
  • Broadcast
  • TV programs
  • Others
  • Custom productions

27
Our focus point
  • Creating multimedia documents
  • Stored on CR-ROM
  • Distributed via WWW
  • Augmented to be distributed via Interactive TV

28
Approach
  • Project planning
  • Software development
  • Analysis
  • Design
  • Implementation
  • Validation
  • Project plan
  • Documents
  • Requirement specifications
  • Design description
  • Actual software
  • Test method and results
  • User Manuals

29
Multimedia Software Tools
  • Tools
  • Audio
  • Cakewalk
  • Cubase
  • Image and Video
  • Adobe Photoshop
  • Adobe Premiere
  • Integration
  • Authorware
  • Director

30
Cakewalk
  • Supports General MIDI
  • Provides several editing views (staff, piano
    roll, event list) and Virtual Piano
  • Can insert WAV files and Windows MCI commands
    (animation and video) into tracks

31
Cubase
  • A better software than Cakewalk Express
  • Allows printing of notation sheets

32
Adobe Photoshop
  • Allows layers of images, graphics and text
  • Includes many graphics drawing and painting tools
  • Sophisticate lighting effects filter
  • A good graphics, image processing and
    manipulation tool

33
Adobe Premiere
  • Provides large number (up to 99) of video and
    audio tracks, super-impositions and virtual clips
  • Supports various transitions, filters and motions
    for clips
  • A reasonable desktop video editing tool

34
Authorware
  • Professional multimedia authoring tool
  • Supports interactive applications with
    hyperlinks, drag-and-drop controls, and
    integrated animation
  • Compatibility between files produced from PC
    version and MAC version

35
Macromedia Director
  • Movie metaphor
  • Can accept almost any bitmapped file formats
  • Lingo script language with own debugger allows
    more control including external devices, e.g.,
    VCRs and video disk players
  • Ready for building more interactivities
    (buttons, etc.)
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