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Multimedia

Multimedia. Elements & standards. M u l t i m e d i a. Objectives Describe the fundamental elements of multimedia Text Graphics Animation Audio Video Describe current competing multimedia standards. T e x t. Printed text may be Retyped or Scanned Electronic text

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Multimedia

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  1. Multimedia Elements & standards (c) 1998-01 V/2-Com (Verhaart)

  2. Multimedia • Objectives • Describe the fundamental elements of multimedia • Text • Graphics • Animation • Audio • Video • Describe current competing multimedia standards (c) 1998-01 V/2-Com (Verhaart)

  3. Text • Printed text may be • Retyped or Scanned • Electronic text • Included with publications • From the internet • Hypertext • Linked text (c) 1998-01 V/2-Com (Verhaart)

  4. Text - standards • ASCII • Unformatted/most basic • Rich Text Format (RTF) • Formatted/portable • Custom format • Embedded into software • Hypertext • hypertext markup language (html) (c) 1998-01 V/2-Com (Verhaart)

  5. Graphics • Bitmaps • Stored in pixels • ClipArt • Pre drawn graphics** check licensing details • Digitizing pictures • Capture still video using video capture boards • Hyperpictures • Pictures or parts triggermultimedia events. (c) 1998-01 V/2-Com (Verhaart)

  6. Graphics formats • Bitmap • BMP, • GIF, • JPG (JPEG) • Vector • WMF, • CDR (c) 1998-01 V/2-Com (Verhaart)

  7. Animation • Object • movement of unchanged text and objects around the screen. (eg. title left) • Frame (Cel) • different frames or screens that are rapidly displayed to simulate motion.(eg. Animated GIF files, morphing) • Vector • Used extensively in “maze” games, and animated videos(eg. Need for speed, Bugs life movie), • also Macromedia flash, VRML (c) 1998-01 V/2-Com (Verhaart)

  8. Animation formats • Bitmap • Animated GIF • FLI • Video • MOV, AVI, MPEG • Vector • VRML • Macromedia flash • Quicktime 3.0 (c) 1998-01 V/2-Com (Verhaart)

  9. Audio • Waveform • Frequency, amplitude and harmonic content. Samples actual sounds • CD Audio • 44,100 samples per second • 16 bits allows for 98db • MIDI (Musical instrument Digital interface) • Codes musical notes Sample wavClick here Sample midClick here (c) 1998-01 V/2-Com (Verhaart)

  10. Audio formats • Waveform • WAV • MPEG, AVI (Video without picture) • MP3 • MIDI (Musical instrument Digital interface) • MID Sample wavClick here Sample midClick here (c) 1998-01 V/2-Com (Verhaart)

  11. Video • Live video feeds • TV channels on the internet • Video tape • Not usually controllable by computer but new recorders are appearing.(Sony) • Video disc • Likely to be replace by CD’s and DVD • Digital video • - Hard disk, CD-ROM or DVD • Hypervideo • video used to trigger other events Sample videoClick here (c) 1998-01 V/2-Com (Verhaart)

  12. Video formats • Audio Video Interleave (AVI) • Windows • Windows MoVie (WMV) • AVI replacement (MP4?) • MOV • Apple quicktime • Motion Picture Experts Group (MPEG) • generic Sample videoClick here (c) 1998-01 V/2-Com (Verhaart)

  13. Player standards • Windows • Media control interface (MCI) • Designed by Microsoft for Widows • DirectX • Updated MCI introduced 1998. • Apple • Quicktime • Designed for Apple has Windows version • Unix • ?? (c) 1998-01 V/2-Com (Verhaart)

  14. (c) 1998-01 V/2-Com (Verhaart)

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