0 intro to multimegia
- 1. INSTRUCTOR: MOHAMMED ABDUL KHALIQ DWIKAT EMAIL:dwikatmo@gmail.com TOPIC: MULTIMEDIA INTRODUCTION DATE: 1/31/2020 PAGE: 1 OF 7 MMuullttiimmeeddiiaa -- AAnn IInnttrroodduuccttiioonn // ddwwiikkaattmmoo@@ggmmaaiill..ccoomm Multimedia- Definitions Multi - many; much; multiple Medium - a substance regarded as the means of transmission of a force or effect; a channel or system of communication, information, or entertainment (Merriam-Webster Dictionary ) So, Multimedia??? The terms Multi & Medium don’t seem fit well Term Medium needs more clarification !!! Multimedia- Definitions Medium Means for distribution and presentation of information Classification based on perception (text, audio, video) is appropriate for defining multimedia Multimedia could be classified according to (Criteria for the classification of Medium) 1.STORAGE Where will the information be stored ? Random Access Memory (RAM) Read-Only Memory (ROM) Hard Disks CD-ROM Discs - Compact disc read-only memory (CD-ROM) Digital Versatile Discs (DVD) Blu-ray Discs
- 2. INSTRUCTOR: MOHAMMED ABDUL KHALIQ DWIKAT EMAIL:dwikatmo@gmail.com TOPIC: MULTIMEDIA INTRODUCTION DATE: 1/31/2020 PAGE: 2 OF 7 2. INFORMATION EXCHANGE (Combination of storage and transmission media) Which information carrier will be used for information exchange between different places Interactive: when the end-user is allowed to control what and when the elements are delivered. Not interactive (Linear): users just sit and watch as if it is a movie. Nonlinear: when the users are given the navigational control and can browse the contents at will. When Multimedia is Interactive, It is Nonlinear as Hypertext and hypermedia. Hypertext: text contains links to other text Hypermedia: text, images, videos contains links to other multimedia elements When Multimedia is Not Interactive, It is Linear. 3.TRANSMISSION a) Synchronous: Packets can be received at an earlier time b) Asynchronous: Packets received as fast as possible, Suited for discrete media (no time restriction, as sending an image to an email) c) Isochronous: reduce storage requirements at the receiver Streaming Media over the Internet: Data Stream is any sequence of individual packets ransmitted in a time-dependent fashion Playback at users computer is done while the media is being transferred (no waiting till complete download!!!) You can find streaming in Internet radio stations Distance learning Cricket Live!!!
- 3. INSTRUCTOR: MOHAMMED ABDUL KHALIQ DWIKAT EMAIL:dwikatmo@gmail.com TOPIC: MULTIMEDIA INTRODUCTION DATE: 1/31/2020 PAGE: 3 OF 7 online Casting 4. REPRESENTATION how is the computer information coded? (ASCII,PCM,MPEG,…) Compressed: represented internally with minimum amount of data Not compressed: Represented internally by default (Vector, Raster, Metafile) 5.PERCEPTION how humans perceive information in a computer environment (by seeing, by hearin…) 6.PRESENTATION Through which medium is information delivered by the computer or into the computer ? Output : paper, screen, loudspeaker … Input: Keyboard, mouse, cameram microphone … Time always takes separate dimension in the media representation Based on time-dimension in the representation space, media can be Time-independent (Discrete) as a document Text, Graphics Time dependent (Continuous) as a movie, Audio, Video Video, sequence of frames (images) presented to the user periodically. Time dependent aperiodic media is not continuous!! Discrete & Continuous here has no connection with internal representation !! (Relates to the viewers impression…)
- 4. INSTRUCTOR: MOHAMMED ABDUL KHALIQ DWIKAT EMAIL:dwikatmo@gmail.com TOPIC: MULTIMEDIA INTRODUCTION DATE: 1/31/2020 PAGE: 4 OF 7 Multimedia- Definitions Multimedia is any combination of digitally manipulated text, art, sound, animation and video. A more strict version of the definition of multimedia do not allow just any combination of media. It requires Both continuous & discrete media to be utilized Significant level of independence between media being used The less stricter version of the definition is used in practice. Multimedia- Definitions Multimedia elements are composed into a project using authoring tools. Multimedia Authoring tools are those programs that provide the capability for creating complete multimedia presentations by linking together objects such as a paragraph of text (song), an illustration, an audio, with appropriate interactive user control. By defining the objects' relationships to each other, and by sequencing them in an appropriate order, authors (those who use authoring tools) can produce attractive and useful graphical applications. To name a few authoring tools Macromedia Flash Macromedia Director Authorware The hardware and the software that govern the limits of what can happen are multimedia platform or environment A Multimedia Application is an Application which uses a collection of multiple media sources e.g. text, graphics, images, sound/audio, animation and/or video. Multimedia System A multimedia system is characterized by computer-controlled,
- 5. INSTRUCTOR: MOHAMMED ABDUL KHALIQ DWIKAT EMAIL:dwikatmo@gmail.com TOPIC: MULTIMEDIA INTRODUCTION DATE: 1/31/2020 PAGE: 5 OF 7 integrated production, digitally manipulation, continuous (time-dependent) and a discrete (time-independent) medium. Characteristics of a Multimedia System A Multimedia system has four basic characteristics: Multimedia systems must be computer controlled. Multimedia systems are integrated. The information they handle must be represented digitally. The interface to the final presentation is usually interactive. Multimedia Authoring: Systems and Applications An Authoring System is a program which has pre-programmed elements for the development of interactive multimedia Authoring systems vary widely Orientation التوجيهوالتأقلم) ) Capabilities (االمكانياتالمتاحة) , learning curve (فترةالتعلم) . Why should you use an authoring system? More Speed, less time, Less cost Authoring Vs Programming Big distinction between Programming and Authoring. Authoring — a. High level assembly of Multimedia elements b. possibly high level graphical interface design c. some high level scripting. Programming — a. low level assembly of Multimedia elements b. Manual Construction and control of Multimedia c. involves real languages like C, VB, Java, Android Multimedia Authoring Paradigms / Metaphors The authoring paradigm, or authoring metaphor, is the
- 6. INSTRUCTOR: MOHAMMED ABDUL KHALIQ DWIKAT EMAIL:dwikatmo@gmail.com TOPIC: MULTIMEDIA INTRODUCTION DATE: 1/31/2020 PAGE: 6 OF 7 methodology by which the authoring system accomplishes its task. Scripting Language -Lingo scripting Iconic/Flow Control -Authorware Frame -flash Cast/Score/Scripting — Macromedia Director Hypermedia Linkage (http) Tagging — SMIL (Synchronized Media Integration Language) Characterizing continuous media streams Periodicity: Strongly Periodic Data Stream is continuous, constant time interval
- 7. INSTRUCTOR: MOHAMMED ABDUL KHALIQ DWIKAT EMAIL:dwikatmo@gmail.com TOPIC: MULTIMEDIA INTRODUCTION DATE: 1/31/2020 PAGE: 7 OF 7 Multimedia- Applications (Applicable Areas) Multimedia plays major role in following areas Instruction Business Advertisements Training materials Presentations Customer support services Entertainment Interactive Games Enabling Technology Accessibility to web based materials Teaching-learning disabled children & adults Fine Arts & Humanities Museum tours Art exhibitions Presentations of literature