Multimedia Technology and its Application
- 1. Multimedia Text and Graphics Elements of Text • Text Technology Fonts • Types of Fonts • Fonts and Operating Systems Text Data Files • ASCII • Encoded and Decoded Text • Rich Text Format • Proprietary Text Formats 1
- 2. Text Continues.. Using Text in Multimedia Applications • Labels and Captions • Informational Text • Navigation and User support • Applying Text to Multimedia Projects Hypertext • Indexed Retrieval Systems • Linked or Hyperlinked Systems 2
- 3. Graphics Elements of Graphics • Pictures and Images • Raster or Bitmap Images • Vector Images Images and Color • Computer Display Resolution • Computer Generated Color • Color Palettes and Color Look-Up Tables • Color Dithering • Color Flashing 3
- 4. Graphics Continues… Graphics File and Application Formats • Bitmap Formats • Vector Formats • Compressed Formats • Proprietary Formats Obtaining Images for Multimedia use • Paint and Drawing Applications • Scanners • Video and Image Digitizers 4
- 5. Digital Audio and Video Characteristics of Sound and Digital Audio • Voice and music • Digitizing Sound 1. Frame Rate 2. Amplitude Measurement 3. Sound Channels 5
- 6. Calculating Audio Data Size C – number of channels S – sampling rate T – time B – bytes File data size = c*s*t*b 6
- 7. Digital Audio Systems Converting the audio signal from a microphone or from other audio source Transferring the digital data Digital Audio Software Support 7
- 9. Digital Audio Systems Digital Audio Software Support Functions are Play back Record Rewind Stop Fast Forward Reverse 9
- 10. Digital Audio Systems Editing Digital Audio Trimming Slicing and Assembly Volume Adjustments Format Conversions Resampling or Downsampling Equalization Time Stretching Digital Signal Processing Reversing sounds 10
- 11. Digital Audio Systems Sound Controls Selection of Components Volume Level Recording Input Level Bass and Treble controls 11
- 12. MIDI • Musical Instrument and Digital Interface – interchanging information between synthesizers Audio File Formats • Audio Files • Apple • Microsoft • CD-Audio 12
- 13. Using Audio in Multimedia Applications Background on Video • Sources of Digital Video • Types of Analog Video and standards • Component video • Digital video • Computer-based digital video Characteristics of Digital Video • Frame Rate • Frame Size • Color Depth or Resolution • Balancing Characteristics 13
- 14. Interfaced scanning for NTSC Video Signal 14
- 16. Characteristics of Digital Video 16
- 17. Digital Video Data Sizing • Calculating the size of a digital video stream F – frame size R – frame Rate C – Color depth T – time in seconds Video Capture and Playback System • Video Source • Analog to digital converter • Audio capture circuitry • Hardware compression chip 17
- 18. Video Capture and Playback System 18
- 19. Digital Video Playback System via the computer processor and via supporting hardware 19
- 20. Using Graphics in Multimedia Selecting Graphics for multimedia Audio Quality Audio for Managing software function Using audio to enhance other content Audio for content delivery Backgrounds and Transitions Information Delivery Navigation 20
- 21. Product and Design Unit IV – Authoring Tools Objectives Categories of Authoring Tools Selecting the Right Authoring Paradigm 21
- 22. Objectives Multimedia Tool Selection Function Content Hardware Software Performance User Interface Database Reliability Maintenance and Update 22
- 23. Other Elements in Tool Selection Personal Skills Cost Schedule 23
- 24. Multimedia Tool Features Page Controls Three general categories Navigation Input Media Controls Data Text Graphics Audio Video Live Audio/Video Execution 24
- 25. Multimedia Tool Features Linear Sequenced Program Controlled Temporal Controlled Interactively Controlled 25
- 26. Categories of Authoring Tools Simple Authoring and Delivery Tool Programming Languages for Authoring Simple Interactive Authoring Tools Complex Interactive Authoring Tools 26
- 27. Simple Authoring and Delivery Tool Word processors Graphics software Presentation packages 27
- 28. Selecting the Right Authoring Paradigm Internal Expertise Versus Requirement Prototyping with different Tools Cross Platform Tools and Products One strategy for selecting a tool 28