| A | B |
|---|
| Digital Video | Moving images that have been captured, created, or edited electronically |
| Analog Video | Non-digital video signals transmit information continuously in the form of a wave |
| Aspect Ratio | Ratio of a video screen’s width dimension and height dimension |
| Common Aspect Ratios | Standard (4:3) and widescreen (16:9) |
| Frame Rate | Speed at which video frames appears on a screen; measured by F.P.S (frames per second) |
| Scanning Method | Method by which video picture appears on a screen (720p, 1080i, etc.) |
| Interlaced | Displays half of the video picture at a time (odd lines, then even); alternates too quickly for human eye to notice |
| Progressive | Displays the entire video picture at all times; greatly reduces any flickering of picture; better quality image than interlaced |
| NTSC (National Television System Committee) | Standard used in North America and most of South America. 30 frames are transmitted each second |
| PAL (Phase Alternating Line) | Standard mostly used overseas. 25 frames are transmitted each second |
| SECAM | French and Asian broadcast television standard |
| Streaming Video | Transmitting video files that can begin playing over the Internet as the remaining data is still being downloaded |
