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Enabling Technologies. MIS 218A Multimedia for the Web Andy Stokes Week 2. Enabling Technologies. Digital representations Digitization Hardware requirements Software Networks Clients and Servers MIME types Standards. Digital representation. Analog vs Digital a = 97 = 01100001

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Enabling technologies

Enabling Technologies

MIS 218A Multimedia for the Web

Andy Stokes

Week 2


Enabling technologies1
Enabling Technologies

  • Digital representations

    • Digitization

  • Hardware requirements

  • Software

  • Networks

    • Clients and Servers

    • MIME types

  • Standards


Digital representation
Digital representation

  • Analog vs Digital

  • a = 97 = 01100001

  • Wristwatches and clocks

  • Albums and CDs


Bits and bytes
Bits and Bytes

  • Bits are data

  • Bytes are arrangements of that data

  • Bytes can be arranged and collected into data structures

  • Computers see the data structures as either programs or data to be acted on by programs


Digitization
Digitization

  • Sampling

  • Quantization


Hardware requirements
Hardware Requirements

  • If multimedia is so easy to represent digitally, then why is it so relatively new?

    • Answer easy to see:

    • Multimedia takes a lot of speed, processing power to play and create, lots of disk space

    • Effective presentation also requires bandwidth


Hardware considerations
Hardware Considerations

  • Tools for Consumption

  • Tools for Production


So what is a multimedia pc
So what is a multimedia PC?

  • What is the job? Consumption

  • iMac, Mac OS 8, 333mHz processor, 32mb Ram (minimum), 6 GB hard drive, 24 x CD Drive, v90 modem, 10/100 Ethernet, stereo speakers, graphics accelerator card a multiscan monitor

  • Equivalent Win98 system


So what is a multimedia pc1
So what is a multimedia PC?

  • What is the job? Production

  • High end Mac and NT PCs

    • G3 Power Mac, 450mHz proc, 1 MB high-speed cache memory, 128-256 mb RAM, built in 128 bit graphics accelerator with 16 mb on-board memory

    • Equivalent (some would say there is no equivalent) PC

    • SGI or Sun Workstation


Production extras
Production Extras

  • High end scanner

  • Digital Video Camera

  • Microphones

  • Mixers

  • CD/DVD writers


Software
Software

  • Depends on type of medium

    • Picture

    • Animation

    • Sound

  • Approach 1 – WWW

  • Approach 2 – Quicktime and other viewers

  • Approach 3 – Stand-alone


Multimedia production and delivery
Multimedia production and delivery

Vector GraphicsIllustrator Freehand

Web AuthoringDreamweaver GoLive

Web Browser

Bitmapped ImagesPhotoshop Paint Shop Pro

SoundSound Forge Creative Sound Lab

QuickTimeAuthoringElectrifier Pro Premiere

QuickTime Viewer

PRODUCER

AnimationFlash After Effects MGI Lightwave

Multimedia AuthoringDirector HyperCard Flash

Standalone Movie

VideoPremier AfterEffects Final Cut Quick Time Pro


Networks
Networks

  • Connections hold us back

  • Broadband – needed for streaming

  • Dialup – wait for it to download


Clients and servers
Clients and servers

  • Content is delivered via http or ftp

  • Streaming content is often delivered with special protocols – m3u (cousin to mp3)


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