Summary
Highlights
This section provides an overview of the course, defining multimedia as a combination of text, art, sound, animation, and video delivered digitally. It details the learning objectives, including understanding components, applications, and the shift from conventional to digital media. The goals of the course are to introduce fundamental elements, explain representations, perceptions, and applications, and emphasize hands-on software skills.
Multimedia is defined as a combination of text, art, sound, animation, and video presented to the user via digital means. It requires creative, technical, organizing, and business abilities for production. Multimedia projects, when published, become multimedia titles. Authoring tools are crucial for weaving together these elements and managing user interaction.
A brief history of multimedia highlights key milestones from 1945 with Bush's 'memex' to the establishment of the World Wide Web in 1989. The section clarifies that 'media' is plural, although 'multimedia' is often used in the singular. It differentiates between mixed media and multimedia, and explains 'interactive multimedia' where users control content delivery, and 'linear multimedia' where content plays in a fixed sequence.
Hypermedia is introduced as an extension of interactive multimedia, providing a structure of linked elements for user navigation. It is a nonlinear approach, allowing learners to control their pace and sequence through interconnected information. The distinction between hypermedia, multimedia, and interactive multimedia is further elaborated, with hypermedia implying a higher level of user interactivity due to its linked objects like sound, video, and virtual reality.
The five distinct elements of multimedia are detailed: text, images (graphics), sounds (audio), videos, and animations. Text is the basic element, with considerations for position, length, and legibility. Graphics make applications attractive, categorized into bitmaps and vector graphics. Audio includes speech, music, and sound effects, in analog or digital forms. Video provides a powerful impact, with digital video offering easy editing, storage, transfer, and nonlinear editing. Animation makes static images appear to move, available in 2D and 3D forms. Interactivity is considered the sixth element, representing the dialogue between a user and a computer program.
Multimedia content can be delivered through three common mediums: web-based multimedia (combining multimedia and internet technology), portable storage devices (CDs, USBs), and mobile devices (smartphones, tablets offering diverse multimedia options).
The computing elements required for a multimedia system include capture input devices (keyboards, digital cameras, microphones), storage devices (hard disks, optical disks, flash drives), communication networks, computer systems, and display devices. Various input devices like mouse, joystick, pen input, touch screen, digitizer, image scanner, OCR, sound input, and video cameras are explained. Storage devices are crucial due to large multimedia file sizes and real-time requirements. Modern hard disks offer large storage, optical disks greater capacity via lasers, and flash drives provide reliable portable storage.
Multimedia computer systems require faster CPUs, larger storage, larger main memory, good graphics terminals, and input/output devices to handle the large data sizes of multimedia. Output devices convey information and include audio devices (sound chips, microphones, amplifiers, speakers), video devices (video disc players, video cards, video displays), and projectors (CRT, LCD, light valve projectors) for larger audiences.
Digital media are machine-readable and contrast with traditional analog media like print, film, or audiotape. Traditional media industries emerged from specific technologies (books, radio, TV) and provided broadcast services with separated channels. Digital technology is universal, can embed any media type, and is not tied to physical media. This revolution integrates traditional media into digital forms (digital TV, e-books, digital cinema) and introduces new media like games. This shift involves interactive, on-demand information delivery, breaking with physical carriers through electronic networks.
Multimedia applications span various fields: business (presentations, training, marketing, video conferencing), education (interactive learning, engaging students), home (via TVs), public places (kiosks), and virtual reality (immersive experiences). Further applications include engineering (simulations), industry (presentations, training, advertising), mathematical and scientific research (modeling, simulation), medicine (virtual surgery, disease simulation), and journalism (engaging global audiences with technology).
The video concludes by recapping the basics of multimedia, its combination of elements, production requirements, and interactive vs. linear presentations. It reiterates that multimedia involves structured linking (hypermedia) and the use of authoring tools. Multimedia's appropriateness in various sectors like education, marketing, and entertainment is highlighted. The large memory requirements for multimedia often necessitate storage on CD-ROMs or DVDs, and its presence on web pages, including rich media, requires significant bandwidth. Finally, multimedia offers diverse career paths in graphic design, web design, animation, and audio/video production.