CHAPTER FOUR - MULTIMEDIA
4.1 Multimedia Concepts
188.8.131.52 Define multimedia.
Multimedia is the presentation of information by using a combination of text, audio, graphic, video and animation.
184.108.40.206 Identify the use of multimedia in various fields.
Multimedia has played an important role in other fields, such as business, arts, medicine and engineering. In business, multimedia applications are used in advertising products. Many companies nowadays develop and distribute catalogues in the form of a CD-ROM as it is more interesting to the consumers. In art, artists use multimedia elements by combining drawing and animation. In medicine, doctors can practice or be trained in performing high-risk surgery by using virtual surgery. In engineering, Computer-Aided Design or CAD is used. By using this application, engineers can view the design from many aspects and improve on it before production.
220.127.116.11Differentiate between the characteristics of linear and non-linear multimedia.
In linear interactivity, the user interacts with the multimedia application without controlling the progress of the content. In other words, the user is a passive receiver of the multimedia content most of the time.
The linear content is usually arranged in sequence. An example of the multimedia linear content is a movie. Although a movie uses a combination of audio, graphics and animations, the user has no control over the sequence of events.
Unlike linear interactivity, non-linear interactivity allows the user to interact with the content according to what the user wants from the content. In other words, it is a two-way communication.
The user can control the progress and sequence of the multimedia content by using buttons or links. Non-linear interactivity uses tools like “hypertext” to connect a word or a phrase to another screen.
An electronic book with links to another screen is considered as having non-linear multimedia content. Hypermedia is also used in non-linear interactivity. This tool is similar to hypertext. However, it connects to different media elements such as audio and video.
18.104.22.168Compare and contrast the mediums of delivery for multimedia applications:
Web-based multimedia is a combination of multimedia technology and Internet technology. Web-based multimedia is popular nowadays.
In the past, Web pages were filled only with static texts and graphics as there were problems in downloading large multimedia files through the Internet. Downloading a video file could take a long time as it is large.
Now, with the advancement of both technologies, most Web pages integrate elements like text, graphic, audio, video and animation.
These dynamic elements make the process of distributing information through the Internet more interesting and effective to the user.
There are a lot of multimedia software including plug-ins, players and browsers used in the Internet. These software allow better quality multimedia programs to be stored and viewed. Software Plug-in @ Player Browser • Flash Director FrontPage Java Flash Player Media Player Internet Explorer Firefox
CDs like CD-ROM (Compact Disc Read Only Memory) have been used to store and deliver multimedia content.
CDs are usually used with computers. An improvement of the CD-ROM is the Blu-ray disc which can store better quality video.
However, the main problem in using CD-ROMs as a medium is that, it can be costly as it takes a long time to produce a complete multimedia program.