SCSBC3 - Video

Video

Multimedia source combining images for motion.

Analog Video

Stored using non-computer media like film or tape.

Digital Video

Digitized format replacing analog for multimedia.

Frame Rate

Speed of video frames, measured in fps.

Image Size

Resolution of video, e.g., 640x480 pixels.

Color Depth

Number of colors per frame affecting quality.

Progressive Scan

Displays all lines of a picture simultaneously.

Interlaced Scan

Displays alternating lines of a picture sequentially.

Streaming

Transmitting video while loading over the Internet.

Lossless Compression

Reduces file size without quality loss.

Lossy Compression

Reduces file size with some quality loss.

Chroma Key

Technique for superimposing clips using color screens.

Rule of Thirds

Divides frame into thirds for composition.

Close-up

Shot focusing on an important part of subject.

Medium Shot

Shows part of the subject in detail.

Wide Shot

Shows subject and surrounding location entirely.

High Angle Shot

Shot from above normal eye-level.

Low Angle Shot

Shot from below normal eye-level.

Pan

Camera moves side to side while stationary.

Tilt

Camera moves up and down while stationary.

Dolly

Camera physically moves towards or away from subject.

Zoom

Camera lens mechanics make subject appear closer.

Video File Formats

Different formats for storing and streaming video.

MOV Format

Apple's format for QuickTime video playback.

WMV Format

Microsoft's format for streaming video.

MPEG-2

Standard format for DVD video.

MPEG-4

Format for Blu-ray with high-quality compression.

FLV Format

Format for delivering video via Adobe Flash.