Intro to Multimedia SystemsPresentation Transcript
IT31 – Multimedia Systems Prepared by: Ocirne Jun-Jun S. Liwanag
What is Multimedia? Multimedia is media and content that uses a combination of different content forms. Multimedia includes a combination of text, audio, still images, animation, video, and interactivity content forms.
Multimedia Application is an Application which uses a collection of multiple media sources e.g. text, graphics, images, sound/audio, animation and/or video.
What is HyperText and HyperMedia? Hypertext is a text which contains links to other texts. (e.g. PDF Documents, Word Documents)
HyperMedia is not constrained to be text-based. It can include other media, e.g., graphics, images, and especially the continuous media - sound and video. (e.g. WWW)
MULTIMEDIA SYSTEMS A Multimedia System is a system capable of processing multimedia data and applications.
Characteristics of a Multimedia System Multimedia systems must be computer controlled. Multimedia systems are integrated. The information they handle must be represented digitally. The interface to the final presentation of media is usually interactive.
Components of a Multimedia System Capture devices Video Camera, Video Recorder, Audio Microphone, Keyboards, mice, graphics tablets, 3D input devices, tactile sensors, VR devices. Digitizing/Sampling Hardware Storage Devices Hard disks, CD-ROMs, Zip drives, DVD, etc Communication Networks Ethernet, Token Ring, FDDI, ATM, Intranets, Internets.
Components of a Multimedia System (2) Computer Systems Multimedia Desktop machines, Workstations, MPEG/VIDEO/DSP Hardware Display Devices CD-quality speakers, HDTV,SVGA, Hi-Res monitors, Color printers etc.
Examples of Multimedia Applications include: World Wide Web Hypermedia courseware Video conferencing Video-on-demand Interactive TV Groupware Home shopping Games Virtual reality Digital video editing and production systems Multimedia Database systems
CATEGORIZATION OF MULTIMEDIA Linear active content progresses without any navigation control for the viewer such as a cinema presentation.
Non-linear content offers user interactivity to control progress as used with a computer game or used in self-paced computer based training.
ELEMENTS OF MULTIMEDIA Text - Displays word on the screen – is the base layer of almost all programs. Text is still the quickest programs will always use it. Pictures - Multimedia computers can display photograph quality pictures on the monitor. Movies - With a multimedia program, your computer can turn into a TV set.
ELEMENTS OF MULTIMEDIA Animation - Sometimes animation can express a point better than movies. Sound - A biting dinosaur isn’t much impressive unless you can hear the bone crunches well.