introduction to multimedia csit 210 *several of these slides have been adapted and modified from cmu...
TRANSCRIPT
Introduction To Multimedia
CSIT 210
*Several of these slides have been adapted and modified from CMU CPS282 course by Jerry Kabell.
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Course Outline
Course Outline
Multimedia – An Overview
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Objectives
Multimedia defined
Multimedia on the Web
Multimedia growth
Educational applications
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Objectives
Entertainment applications
Business applications
Multimedia playback systems
Multimedia development systems
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Multimedia Defined
A computer-based, interactive
experience that incorporates text, graphics, sound, animation, video
and virtual reality.
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Multimedia Elements
Drawings and PhotosDrawings and PhotosGraphicsGraphics
2-D and 3-D, Video2-D and 3-D, VideoAnimationAnimation
SoundSound
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Interactivity of Multimedia
Allows user to interact with applicationContent presentation is nonlinearUser determines– What content is delivered– When it is delivered– How it is delivered
Input can be keyboard, mouse, voice and touch screens
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Computer Playback System
Internet connection with browser also important
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Multimedia
Applications:All uses of multimedia
Applications:All uses of multimedia
Titles:Specific products;
usually on CDs
Titles:Specific products;
usually on CDs
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Multimedia on the Web
Internet
Browsers
World Wide Web
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Multimedia Growth
Highest growth rate is online
Telecommunications– Multimedia courseware– Training and teleconferencing
Internet– Home pages for products– Video demonstrations– Product purchases
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Webcasting - Includes audio and video in real time
Live broadcast
Program needed to
receive webcast can
be downloaded
Live updates on
scoreboard
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Animations
Rotating text and 3-D settings
Software– HTML– Macromedia Flash– Virtual Reality Modeling Language
(VRML)
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HTML
HyperText Markup Language
Basic Web documents
Hyperlinks
HTML tags: <i>Hello</i>
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Multimedia Web Pages
Java programming language– Animations– Database searches– Applets
Need for file compression– Video/audio files very large– Modem speeds can be slow
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Growth of Multimedia
Growth in % of homes with computers in US
Prices dropped from $2000 to $500 from 1997 to 2001Prices dropped from $2000 to $500 from 1997 to 2001
Growth in % of homes using internet in US
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Internet Usage Growth Drivers
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Growth of Internet Users
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Growth of Mobile Subscribers
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Growth of Multimedia
Audio and video delivered on web (RealPlayer)
CD-ROM titles decreased– 1992 = $100– Today < $20
Computer company marketing techniques– Next “killer application”
Adding value to an existing product (the computer)
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Multimedia Barriers
Different types of computer systemsDifferent types of computer systems
Vary in speed, capacity and display capabilities
Vary in speed, capacity and display capabilities
Lack of standardizationLack of standardization
Lack of a way to deliver huge amounts of information to the desktop
Lack of a way to deliver huge amounts of information to the desktop
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Using Multimedia for Education
Learning by
association
Learning by experimentation
Learning by visual stimulation
Learning by sound
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Multimedia Allows Students To
“Jump” via hyperlinks
Proceed at their own pace
Focus on particular areas
Be in charge of learning experience
Have instant feedback
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Online Course Benefits
access it anytime from anywhere
see animations with audio and video
have virtual labs to conduct experiments
Students can:
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Edutainment CDs
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Reference Titles and Multimedia
Encyclopedias
Census data
Yellow Pages
Dictionaries
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Entertainment Applications
Pioneers in multimedia were game developers
Emphasis has shifted from:– Pure action Action + story-telling– Games Entertainment– Physical Mental
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Games on the Web
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Virtual Worlds
A new field in entertainment on the Web where
individuals can log on and interact with others in a
virtual environment that includes chat
sessions.
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Online Entertainment Categories
Sports (Beckett Interactive Football League)Sports (Beckett Interactive Football League)
Mystery (Avalon)Mystery (Avalon)
Adventure (Webstrike)Adventure (Webstrike)
Fun (Playsite backgammon, etc.)Fun (Playsite backgammon, etc.)
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Recreation Applications
Give user a vicarious experience– “play” a famous golf course– “fly” over 3-D cityscapes
Could include hobbies and sports titles
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Microsoft Flight Simulator
Award winning; most popular; oldest
U.S. Navy has used it to train pilots
Requires a fairly powerful computer configuration for latest version
Has spawned web sites, user groups, newsletters, and add-on products
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Multimedia Category Crossovers
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Business Applications
Multimedia used for communication:
Training PresentationsMarketing
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Marketing on the Web
Go global on the Net
Shop online
Demonstrate product lines
Allow users to customize products online
Publish magazines online
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Corporate Training
Multibillion-dollar industry
Focus on specific skill sets
Can be on CD or the Web– Often use an Intranet
Can train for certification tests
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Business Presentations
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Computer Playback Systems
DevelopmentSystem
PlaybackSystem
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Hardware Issues
Minimum configuration vs. recommended configuration
Processor can determine speed
Memory types:– Temporary: Random Access
Memory (RAM)– Permanent: hard drive
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Hardware Issues: Displays
Monitor standards:– Screen resolution – Number of colors
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Hardware Issues: Displays
Resolution differences
640 x 480 1024 x 768
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Hardware Issues: Displays
Video Graphics Card– Video Graphics Array (VGA)– Super VGA (SVGA)
Card determines:– Resolution– Memory capacity– Number of colors displayed
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Hardware Issues: Sound
Need:– Audio card (Sound Blaster)– Speakers
Sound quality depends on number of bits used
Standard is 16-bit sound
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Hardware Issues: Digital Disks
Compact Disc Read-Only MemoryDigital Versatile or Video DiskDrive determines– What type of disk can be played– Speed of locating data on disk
(seek time)– Speed of transferring disk
information to computer
CD-ROM
DVD
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Multimedia Development Systems
Speakers
Video camera
Flatbed scanner
Microphone
High capacity removable disk storage
Disk array for video capture and storage
CD-ROM recorder
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Development Platforms
Macintosh– Superior handling of graphics– Cross-platform capabilities– Used extensively in multimedia
development
WindowsSoftware allows – Development on particular platform – Playback on both platforms
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Development Configurations
Pentium III 750 processor or Power Mac 500
256 MB of RAM desired
20 GB of hard disk space
Video capture card (internal) and video source (camera, VCR, TV)
19” monitor
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Digital Cameras
Menu Options:– Preview– Play back– Delete– View in slide-show
Images stored on 4 GB SDHC memory card (available upto 32 GB)
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Issue: What is the appropriate use of multimedia?
Does development time outweigh cost of alternatives?How should we use text and video?Who is your audience?Is use of bells and whistles appropriate?What are our objectives?
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Issue: MPC Standards - Are they needed?
1990
MPC L
evel
1 s
pecifi
catio
ns cr
eate
d
1991
Multi
med
ia P
C Mar
ketin
g Counci
l form
ed
1993
MPC L
evel
2 s
pecifi
catio
ns cr
eate
d
1995
MPC L
evel
3 s
pecifi
catio
ns cr
eate
d
1996 to present
????????
End
Multimedia – An Overview