Transcript Multimedia Production

Uses and Terms to Know
Computer Applications II
Objective
Uses of Multimedia Production
Communication is essential in today’s hightech, fast-paced work environment.
Multimedia can help to enhance your
communication skills by giving your
audience a visual representation
of your ideas.
Multimedia production can be used when
you find yourself...
–presenting new ideas
–motivating team members
–persuading others to take
action
–delivering bad news to
workers
–facilitating meetings
–working with customers
...just to name a few situations.
Terms to Know:
•Aspect ratio: (height X width) Proportions of
graphics. Some programs allow you to maintain
the aspect ratio when sizing a picture. (i.e.-no
distortion)
•Authoring software: Programs used to create
full, multimedia productions, such as simulations
and tutorials. Most have some point-and-click
features, but require some knowledge of
programming language concepts. (i.e.-Microsoft
Visual Basic, Macromedia Director)
•AVI (Audio Video Interleaved): Windows
format for saving video with sound. Same as
Mac’s QuickTime MOV format.
•Bitmap (.bmp): Windows format for storing
simple graphics. Can create bitmaps with Paint
program.
•CODEC: Program/device that COmpresses and
DECompresses digital video. Cinepak, Indeo
(Intel), and RealVideo are examples of CODEC’s.
•Color Palette: Available color selections,
ranging from 16 colors to 16.7 million. Color
shifts can occur from program to program and
from computer to computer.
•Digital/Digitalization/Digitized: Progress of
converting video or audio signals, normally in
waveform, into 1’s and 0’s. This digital format
(actually patterns of on’s/high voltage (1’s) and
off’s/low voltage (0’s) can be processed by the
computer.
•Dithering: Blending colors to modify colors or
produce new ones.
•Dropped frames: In digital video, when the
computer cannot keep pace with the displayed
images, it drops frames in an attempt to catch
up.
•FPS (frames per second): Number of picture
images displayed per second, giving digital video
the illusion of motion. (30 fps considered to be
TV quality)
•Frame: A single picture in a computerized
“movie”
•GIF (Graphic Interchange Format): A
graphics file format originated by Compuserve,
usable for web pages and some multimedia
software.
•JPEG (Joint Photographic Experts Group):
A graphics format capable of representing up to
16.7 million colors that is ideal for complex
pictures of natural, real world scenes, including
photographs, realist artwork, and paintings.
(10:1 or 20:1 compression ratios)
•MIDI file: A file containing musical data
encoded according to Musical Instrument Digital
Interface specifications. (extension .MID)
•MPEG video: A format for the compression of
digitized videos and animations developed by the
Moving Pictures Expert Group.
•MPEG-1: “postage stamp” resolution 352X240
• MPEG-2: “broadcast quality” resolution
720X480 w/ CD quality sound
•MPEG-3: High Definition Television
•QuickTime (MOV): A cross-platform real-time video
and multimedia data format developed by Apple
Computer. QuickTime can include text, sound, and
video.
For more information surf to one of the
following sources:
Online Reference of Multimedia
UNCG Glossary of Multimedia Terms
Webopedia
Webster’s New World Dictionary of
Computer Terms