Glossary Of Terms

Video Formats (eg. mov,avi)

The Video Files category includes a wide range of video formats, which use different codecs to encode and compress video data. This category also includes video project files and video information files, which may not contain video data. (eg. mov, avi, mp3)

Streaming

Technology that allows live video and audio broadcast of an event or the ability to have it hosted for on-demand viewing later. Typically a camera image of the speaker and an audio signal from a microphone streamed online.

File Compression

Software that makes files smaller than their original size so they take up less space on a disk or other storage medium.

Aspect Ratio: 4:3, 16:9

(Taken from steves-digicams.com)


Aspect ratio is defined as the ratio of width to height of an image. A 4:3 aspect ratio means that for every 4 inches of width in an image, you will have 3 inches of height. In mathematical terms, that comes out to the screen being 33% wider than it is high. A 16:9 aspect ratio means that for every 16 inches of width in an image, you will have 9 inches of height. Unlike the 4:3 aspect ratio, a 16:9 aspect ratio is 78% wider than high.
The 4:3 Aspect Ratio:  The 4:3 aspect ratio has been around since the early days of television in the 1940's and 1950's. A television that has an aspect ratio of 4:3 is often referred to as being NTSC, or pan and scan. The majority of analog cable channels still broadcast in 4:3.
The 16:9 Aspect Ratio:  The 16:9 aspect ratio is a product of movie producers. They wanted to find a way to make their movies bigger and better in order to attract more customers. The widescreen format of the 16:9 aspect ratio allows users to view a bigger picture when compared to the 4:3 aspect ratio. The 16:9 aspect ratio also enhances the quality of the image by allowing for bolder backdrops and scenery. The 16:9 aspect ratio is not as wide as what you would see in a cinema, but it is close.

Frame Rates

The frequency at which film or video frames run (i.e. 24 fps; 29.97 Hz in NTSC; 25 Hz in PAL European format).