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Lecture Notes AIOU ICT 1431 (Unit # 08 ) Unit No. 8 Introduction to Multimedia In today’s advanced and technology adapted society, the concept of multimedia is ever present in many facets of life. Multimedia can be termed as the “use of several different types of media (text, audio, graphics, animation, video and interactivity) to convey information. Multimedia is a combination of text, graphic, sound, animation, and video that is delivered interactively to the user by electronic or digitally manipulated means. Components of multimedia The primary characteristic of a multimedia system is the use of more than one kind of media to deliver content and functionality. Web and desktop computing programs can both involve multimedia components. As well as different media items, a multimedia application will normally involve programming code and enhanced user interaction. Multimedia items generally fall into one of five main categories and use varied techniques for digital formatting. Text Most multimedia systems use a combination of text and other media to deliver functionality. Text in multimedia systems can express specific information, or it can act as reinforcement for information contained in other media items. 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 1 Lecture Notes AIOU ICT 1431 (Unit # 08 ) Example Images Graphic / Digital image files appear in many multimedia applications. Digital photographs can display application content or can alternatively form part of a user interface. Interactive elements, such as buttons, often use custom images created by the designers and developers involved in an application. 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). Example 2 Lecture Notes AIOU ICT 1431 (Unit # 08 ) Audio Audio files and streams play a major role in some multimedia systems. Audio files appear as part of application content and also to aid interaction. When they appear within Web applications and sites, audio files sometimes need to be deployed using plug-in media players. Audio formats include MP3, WMA, Wave, MIDI and RealAudio. 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. Example Video Digital video appears in many multimedia applications, particularly on the Web. As with audio, websites can stream digital video to increase the speed and availability of playback. Common digital video formats include Flash, MPEG, AVI, WMV and QuickTime. Most digital video requires use of browser plug-ins to play within Web pages, but in many cases the user's browser will already have the required resources installed. 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. 3 Lecture Notes AIOU ICT 1431 (Unit # 08 ) Animation Animated components are common within both Web and desktop multimedia applications. Animations can also include interactive effects, allowing users to engage with the animation action using their mouse and keyboard. The most common tool for creating animations on the Web is Adobe Flash, which also facilitates desktop applications. Using Flash, developers can author FLV files, exporting them as SWF movies for deployment to users. Flash also uses Action Script code to achieve animated and interactive effects. 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. Example Types of multimedia Linear Multimedia A Multimedia Project is identified as Linear when: It is not interactive Users have no control over the content that is being showed to them. Example: A movie A non-interactive lecture / demo show 4 Lecture Notes AIOU ICT 1431 (Unit # 08 ) Interactive Multimedia 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 The different types of multimedia applications include live performances and demonstrations of products through the use of multimedia displays, as well as various applications for multimedia in advertising. Much of this advertising utilizes computers and is often found on the Internet, in which animations, sounds, and text are frequently combined to create an interactive or multimedia advertisement for a particular product or service. The term “multimedia applications” can also refer to the various programs used to create multimedia works, and these include animation programs, sound engineering and recording software, and compositing programs used to combine various raw source files. There are many different ways in which multimedia can be utilized in various applications, though these are often commercial in nature. Such commercial uses can also be artistic, however, such as live performances of music or theatrical productions. Musical concerts, for example, can utilize multimedia presentations, as various visuals are used to accompany the live music being played, including laser light shows and projected images of animation or filmed footage on a large screen behind the performers. Performance artist works are often seen as types of multimedia applications, especially those that incorporate computers to create images and audio to accompany their own performances. Multimedia Application Multimedia can be used for entertainment, corporate presentations, education, training, simulations, digital publications, museum exhibits and so much more. With the advent multimedia authoring applications like Flash, Shockwave and Director amongst a host of other equally enchanting applications, your multimedia end product is only limited by your imagination. 5 Lecture Notes AIOU ICT 1431 (Unit # 08 ) Multimedia System A computer system with the capabilities to capture, digitize, compress , store, decompress and present information is called multimedia system. The aim of multimedia system is to provide a creative and effective way of producing, storing and communicating information. The application areas of multimedia are marketing, training, education, entertainment, etc. Application of multimedia: a) Multimedia presentation: Multimedia presentation can be used to better explain a subject matter to the students because it enhances the comprehension capability of students. It is extremely effective in getting across new ideas and concepts. MS PowerPoint most popular application used, about 90% presentations are developed in this application. b) Entertainment: Multimedia technology is used by entertainment industry as in video games, films, cartoons, animation, sound effects etc. c) Software: Multimedia is used for training purpose or guide. So users can operate software without help of trainers. Used as learning software’s (foreign languages, some special effects in the movies) etc. d) Business communication: Multimedia is very powerful tool for enhancing the quality of business communication. e) Multimedia web pages: Multimedia feature in web pages make more attractive, user friendly. Multimedia as conferencing: Multimedia feature as video and audio conferencing like viber and Skype, user friendly. 6 Lecture Notes AIOU ICT 1431 (Unit # 08 ) Authoring Tools Use to merge multimedia elements (text, audio, graphic, animation, and video) into a project. Designed to manage individual multimedia elements and provide user interaction (if required). Example: Macromedia Authorware Macromedia Director Macromedia Flash MS Power Point There are a number of fields where multimedia could be of use. Examples are: Business Education Entertainment Home Public Places Business Use and Applications Sales / Marketing Presentation Trade show production Staff Training Application Company Kiosk Education Use and Applications Courseware / Simulations E-Learning / Distance Learning Information Searching 7 Lecture Notes AIOU ICT 1431 (Unit # 08 ) Entertainment Use and Applications Games (Leisure / Educational) Movies Video on Demand Online Home Use and Applications Television Satellite TV SMS services (chats, voting, reality TV) Public Places Use and Applications Information Kiosk Smart Cards, Security Media center may refer to: Audio-visual software application or a dedicated media player device for such use Home theater PC, media computer designed for living-room or Home cinema use Home cinema, also commonly referred to as a home theater or home media room Windows Media Center, Microsoft PC software application for Home Theater MediaPortal Media Center, a free alternative to Windows Media Center JRiver Media Center, a multimedia application for Windows computers by JRiver XBMC Media Center, cross-platform software formerly named Xbox Media Center Portable Media Center MediaImpact Media Center Western Digital Media Center Sally Project (Touchscreen Application Framework) OpenSource software, designed for touchscreen Windows machines 8