DMMA STUDY GUIDE

Note: These questions were taken from lectures. If you do not know the answers, please consult with a class mate or review the related links.

EXAM DATE: 4/17/98

General Topics

1. Identify, define and state advantages/disadvantages of each port listed. (Media Connection/Internet)
2. Identify each of the cable connectors presented in class.
3. Review the web page fast loading tips.
4. Be able to draw and label a diagram illustrating how a HU lab is connected to the internet.
5. Be able to define terms like convergence, bandwidth, dithering, MPEG-2, JPEG, etc.
6. Be able to name 3 ways to check stock prices via the internet.
7. Be able to name other non-linear editors besides Adobe Premiere.
8. Be familiar with internet connection methods like ADSL, Cable Modems, ISDN and Analog.

Video Terminology

• Clip
  The source material for a movie. A clip can be a movie, a still image, or an audio file.
• Frame
  The basic unit of information in television, video, and QuickTime movie. In North America, a normal clip plays 30 frames per second (fps).
• Time base
  The time base used for video in North America equals 30 frames per second (fps); therefore, a 1- second clip contains 30 frames. Many other countries use a video standard with a 25-fps time base. Before beginning a project, make sure that a suitable time base is selected.
• Hours:Minutes:Second:Frames
  The standard used to describe the duration of a clip in terms of Hours:Minutes:second:Frames. With a time base set at 30 frames per second, 01:06:51:05 indicates that the clip plays for 1 hour 6 minutes and 51.05 seconds.
• Quick Time
  A system software extension from Apple computer that integrates audio, video and animation activities in Macintosh applications. A QuickTime movie is a digitized movie w that plays on a Macintosh.
• Capturing
  The process of digitizing analog source material (video or audio), and then recording images and sound directly to your Macintosh using Adobe Premiere Movie Capture or Audio Capture commands. Video and sound can be captured in real time. When capturing video into your Macintosh, you need to have a QuickTime - compatible video digitizer card with VDIG software which usually supplied by the manufacturer of the digitizer card.
• Compression
  The specific ( hardware or software ) method used to restructure or remove data to decrease the size of your clip files. If you need to compress your video source material, you can do so when it is first captured into your computer or you can compress the movie when it is complied in Adobe Premiere.

When open a new project, the following windows will show up on screen:
• Construction
• Preview
• Transition
• Commands
• Project

You should able to execute and describe the operating procedures of the following acitvities:

• To create a new project
• To bring in a Clip (sound or video)
• To create a title or text clip
• To create a Transition
• To Preview the edited materials
• To create a motion path for an object or text To control the loudness or fading of a sound clip

1. Cut down image size to 2" x 3" or smaller
2. Set image resolution to 72 dpi
3. Use Indexed color under MODE menu and choose "Other" for "256" colors,
choose "System " for color palette, and choose "None" for Dither
4. Export file to Gif89 in Photoshop 4.0, or SAVE as Jpeg file format in Photoshop 3.04
5. If you do all of the above steps correctly, you should cut the image size down to the teens of KB.

Dithering:
Dithering is a trick many graphic applications use to fool your eye into seeing a whole lot more colors (or gray tones) on the screen than are really there. The computer achieves this optical illusion by mixing together different colored pixels to trick the eye into thinking that a totally new color exists. For instance, since pixels are so tiny, if the computer intermingles a series of black with white dots then you are going to think your are seeing gray.

Color dithering smoothes out images by creating intermediate shades between two more extreme colors (like blending). Dithering also makes the best use of the limited number of available colors, like when you open a 24-bit color image (millions of colors) on a computer that's only capable of displaying 8-bit (256 colors).

There is a " halftone " effect for black-and-white images called dithering. Rather than dots of varying sizes, a dithered image has dots or squiggles all the same size, arranged in such a way as to create the illusion of gray values.

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