Internet and MultiMedia for SC 2

1. Internet and MultiMedia for SC 2 Skill Area 212 Introduction to Multimedia

2. Skill Area 212.1Familiarise with common Multimedia Elements 1. Define Multimedia

3. What is Multimedia? • Is more than one concurrent presentation medium (on CD-ROM or a Web site). • Although still images are a different medium than text, multimedia is typically used to mean the combination of text, sound, and/or motion video. • Some people might say that the addition of animated images produces multimedia.

4. Text and sound • Text, sound, and still or animated graphic images • Text, sound, and video images • Video and sound • Multiple display areas, images • In live situations, the use of a speaker or actors and "props" together with sound, images, and motion video

5. Skill Area 212.1Familiarise with common Multimedia Elements 2. Identify different multimedia elements: Text Graphics Sound Video Animation

6. Text • Words and symbols in any form, spoken or written, are the most common system of communication. Because of this, they are vital elements of multimedia menus, navigation systems, and content. • From the beginning of history, humans have used graphics and text to communicate experiences, knowledge, and feelings.

7. Text • With multimedia technology, text can be combined with other media in a powerful and meaningful way to present information and express moods.

8. Text Text Should be: • Appropriate for the target audience. • Easy to read • Serif typecast are preferred for printed materials. • Sans serif typefaces are preferred for on-screen display.

9. Text Text Should be: • Formatted consistently throughout the presentation.

10. Graphics • Graphics are an important part of the communication process. • They can be used to: • Highlight information • Set a mood or tone • Provide examples • Serve as backgrounds

11. Graphics • The two types of graphic used in multimedia are raster and vector. • Vector graphics are made up of arcs and lines. • Raster graphics are made of dots. Vector Raster

12. Graphics When using graphics, the multimedia designer must: • Determine the best balance between the size and quality. • Use appropriate graphics for the intended purpose and audience.

13. Graphics When using graphics, the multimedia designer must: • Choose appropriate file formats. • Standard for the Internet: • JPEG( Joint Photographer Experts Group) • GIF ( Graphics Interchange File Format) • PNG ( Portable Network Graphics)

14. Graphics When using graphics, the multimedia designer must: • Choose appropriate file formats. • Most popular • TIFF (Tagged Image File Format) • BMP ( Bitmap) • PCX ( Windows Paint) • PICT ( Macintosh)

15. Graphics • Graphics editing programs allow designers to draw, paint, or edit images. • A combination of different graphic programs may be used in creating multimedia presentations.

16. Sound • Sounds in multimedia presentations could include: • Music • Narrations • Sound Effects • Original recordings

17. Sound • Sound waves are vibrations that are created when we speak. • Sound waves are analog signals because they are continuous, fluctuating waves with no interruptions.

18. Sound • Computers are digital machines, meaning that they represent data with 1s and 0s. • To use sound on the computer, the sound waves must be converted from analog to digital form, or digitalized. • This conversion process is called sampling.

19. Sound Audio File Formats • AU (Audio) – used on computers running UNIX OS • MP3 (Mpeg-1 audio layer) - very compressed file that is popular for music stored in portable players. • MIDI (Musical Instrument Digital Interface) – creating and or playing music with instruments.

20. Sound Audio File Formats • WAV (Waveform) – format developed jointly by IBM and Microsoft as the native format for Windows sound files. • WMA (Windows Media Audio) - format developed by Windows to compete with the MP3 format.

21. Video • Videos allow the audience to view actual events instead of just reading about or listening to them. • Sources for videos include web sites and stock film companies.

22. Video • Videos vary in quality • Videos can be used in: • CD-ROMS • Games • Presentations • Video simulations • Video conferences • Websites.

23. Video Video Format • The file format of the video determines: • Which program can open and play • How much storage space it occupies. • How fast it travels over an Internet connection.

24. Video Video File Formats • AVI (Audio Video Interleave) • Windows format, plays in Windows Media Player • Very good quality, even at smaller resolutions • Popular format for videos stored on a computer.

25. Video Video File Formats • MOV (Movie) • Apple format, plays in the QuickTime Player • Very good quality • Popular format for videos downloaded from the Internet.

26. Video Video File Formats • MPEG ( Moving pictures Expert Group) • The standard for compression and storage of audio and motion video for use on the World Wide Web. • Creates video small file sizes. • Popular format for videos downloaded from the Internet. • Its biggest advantage is that It will play in many different media players.

27. Video Video File Formats • WMV ( Windows Media Video) • Proprietary video format developed by Microsoft. • Plays in Windows Media Player. • Popular format for streaming video viewed over the Internet.

28. Video Video File Formats • FLV ( Flash Video) • New file format widely used on the Internet. • Plays in Adobe Flash Player. • Very small file size. • Popular format for streaming video viewed over the Internet

29. Animation • 2-D and 3-D animations are useful in multimedia in the areas of entertainment, education, and training. • They can be used to create simplified illustrations of a simulation or dramatization.

30. Animation • They can be much easier to understand because they are less complex than video. • 2-D animations have smaller file sizes that video files which means quicker loading or downloading of the files.

31. End of Topic