Introduction to Multimedia PDF

Introduction 1 DR. WESAM ASKAR Based on material from Digital Multimedia, 3rd edition published by John Wiley & Sons, 2009 © 2009 Nigel Chapman and Jenny Chapman  Introduction...

Introduction 1 DR. WESAM ASKAR Based on material from Digital Multimedia, 3rd edition published by John Wiley & Sons, 2009 © 2009 Nigel Chapman and Jenny Chapman  Introduction 2 Information can be conveyed in the form of:  text, still images, Web pages, slideshow presentations, video, sound or interactive tooltips. Each medium has its own characteristics, leading to distinctive strengths and weaknesses. Always choose the most appropriate medium for your purpose.  Introduction 3 There is a fundamental distinction between time- based and static media: time-based media exhibit change over time; static media do not. Video, animation and sound are time-based media. Still images and text are usually considered to be static media.  Introduction 4 There are five main elements in a complete multimedia system.  Introduction 5 Digital media can be manipulated as data by programs. Digital multimedia can interact with other sorts of data and computation, serving as a user interface to databases and applications. The history of the development of film demonstrates that it takes much more time than multimedia has existed for new media forms to develop fully.  What is Multimedia? 6 Derived from the word “Multi” and “Media”  Multi  Many, Multiple,  Media  Tools that is used to represent or do a certain things, delivery medium, a form of mass communication – newspaper, magazine / tv.  Distribution tool & information presentation – text, graphic, voice, images, music and etc.  Definition of Multimedia 7 Multimedia is a combination of text, graphic, sound, animation, and video that is delivered interactively to the user by electronic or digitally manipulated means. GRAPHIC TEXT VIDEO AUDIO ANIMATION  Elements of Multimedia 8 Text  A broad term for something that contains words to express something.  Text is the most basic element of multimedia.  A good choice of words could help convey the intended message to the users (keywords).  Used in contents, menus, navigational buttons GRAPHIC TEXT VIDEO AUDIO ANIMATION  Elements of Multimedia 9 GRAPHIC  Two-dimensional figure or illustration  Could be produced manually (by drawing, painting, carving, etc.) or by computer graphics technology.  Used in multimedia to show more clearly what a particular information is all about (diagrams, picture). GRAPHIC TEXT VIDEO AUDIO ANIMATION  Elements of Multimedia 10 AUDIO  Produced by vibration, as perceived by the sense of hearing.  In multimedia, audio could come in the form of speech, sound effects and also music score. GRAPHIC TEXT VIDEO AUDIO ANIMATION  Elements of Multimedia 11 ANIMATION  The illusion of motion created by the consecutive display of images of static elements.  In multimedia, animation is used to further enhance / enriched the experience of the user to further understand the information conveyed to them. GRAPHIC TEXT VIDEO AUDIO ANIMATION  Elements of Multimedia 12 VIDEO  Is the technology of capturing, recording, processing, transmitting, and reconstructing moving pictures.  Video is more towards photo realistic image sequence / live recording as in comparison to animation.  Video also takes a lot of storage space. So plan carefully before you are going to use it. GRAPHIC TEXT VIDEO AUDIO ANIMATION  Interactive Multimedia 13 Hyper Media  When the user is given the option of controlling the elements.  A combination of hypertext, graphics, audio, video, (linked elements) and interactivity culminating in a complete, non- linear computer-based experience.  Linear VS Non-Linear 14 A Multimedia Project is identified as Linear when:  It is not interactive  User have no control over the content that is being showed to them. Example:  A movie  A non-interactive lecture / demo show  Linear VS Non-Linear 15 A Multimedia Project is identified as Non-Linear when:  It is interactive  Users have control over the content that is being showed to them.  Users are given navigational control Example:  Games  Courseware  Interactive CD Hypermedia Flash  Definition of Multimedia 16 Multimedia is a combination of text, graphic, sound, animation, and video that is delivered interactively to the user by electronic or digitally manipulated means. GRAPHIC TEXT VIDEO AUDIO ANIMATION  Examples of hardware 17 The radio, television, computer and mobile phone.  Examples of software 18 email, Yahoo Messenger, Multimedia Message Service (MMS) and video conferencing.  Multimedia definition in ICT 19 In the field of Information and Communication Technology, multimedia means more than the use of the various media. A computer user interacts with the computer to perform tasks such as finding information or play games to develop a skill. Thus, the meaning of multimedia has changed as technology advanced in our lives. multimedia definition in ICT 20  TEXT 21  Text is the basic element of multimedia. It involves the use of text types, sizes, colours and background colour.  In a multimedia application, other media or screen can be linked through the use of text. This is what you call Hypertext.  To produce an effective multimedia program there are three things that need to be considered. They are:  The position of the text on the screen.  Length of the message And  legibility of the text.  Examples:  Funny Greetings Text  Cell Phone Message MMS Picture  Messages Funny Picture Messages  Cell Phone Funny  Kik Messages  GRAPHIC 22  Graphics make the multimedia application attractive.  They help to illustrate ideas through still pictures.  There are two types of graphics used:  bitmaps (paint graphics) and  vector (draw graphics).  Bitmaps images are real images that can be captured from devices such as cameras or scanners.  Vector graphics are drawn on the computer and only require a small amount of memory.  Audio 23  A multimedia application may require the use of speech, music and sound effects. These are called audio or the sound element.  There are two basic types of audio or sound: analog and digital audio.  Analog audio refers to the original sound signal. Digital audio refers to the digital sampling of the actual sound. The sound used in multimedia is digital audio.  Video 24  Video provides a powerful impact in a multimedia program.  In multimedia applications, the digital video is gaining popularity because of the following reasons:  video clips can be edited easily  the digital video files can be stored like any other files in the computer and the quality of the video can still be maintained  the video files can be transferred within a computer network it allows non- linear editing in any part of the video  However, these digital video files are large in size.  Transferring these files can take a long time especially when using the Internet.  Animatio n 25 Animation is a process of making a static image look like it is moving. In multimedia, digital animation is used. Digital animation can be categorized into two broad area: 2D (2 Dimension) and 3D (3 Dimension) animations.  Standard file formats 26 Each of the five elements mentioned has various standard file formats. file format is a particular way to store information in a computer. The formats will allow you to make decisions of the type of text, graphic, audio, video and animation to use when developing your own multimedia program. Standard file formats 27  Interactivity of multimedia 28  If you use the first multimedia application, the content progresses without you having to control the flow of the movie.  Your only control is to press the “play” and the “stop” buttons.  This interaction is called linear interactivity.  On the other hand, the second multimedia application allows you to decide which part you would like to view, or how much you want to know about the content.  This interaction is named non-linear interactivity. Medium of delivery 29 CD-BASED MULTIMEDIA  Multimedia production 30 In producing a multimedia program, we need to Gather data for the 5 basic elements of multimedia: text, animation, graphics, video and audio by using hardware.  Multimedia production 31 To edit the elements, we need special editing software.  Description of hardware 32  Scanners are used to convert conventional images, texts, drawings and photos into digital form that can be understood by the computer.  Video capture devices help to convert analog video to digital video. The fire wire helps to transfer the video from video camera to the computer. Editing software for multimedia 33  Multimedia authoring tools 34 Use to merge multimedia elements (text, audio, graphic, animation, video) into a project. Designed to manage individual multimedia elements and provide user interaction (if required). Examples:  Adobe Authorware  Adobe Director  Adobe Flash  Microsoft Power Point  Multimedia authoring tools 35 Criteria in evaluating an authoring tool:  It should be easy to use; thus non-programmers do not have to learn a programming language in order to develop multimedia courseware.  It should have ready-made templates, including popular buttons or signs and navigation tools.  It offers compatibility with the World Wide Web.  It has on-line help and learning aids.  Multimedia applications concepts 36 Multimedia applications can be classified into three concepts: time frame, icon and card. time frame icon card  Importance of Multimedia 37 Business use and applications  Sales / Marketing Presentation  Trade show production  Staff Training Application  Company Kiosk  Importance of Multimedia 38 Education use and applications  Courseware / Simulations  E-Learning / Distance Learning  Information Searching  Importance of Multimedia 39 Entertainment use and applications  Games (Leisure / Educational)  Movies  Video on Demand  Online  Importance of Multimedia 40 Home use and applications  Television  Satellite TV  SMS services (chats, voting, reality TV)