INTRODUCTION - Digital Video

Today we use Digital Video Camera's to capture those important memories and funny moments we wish to bring out during out 21st. But it was only a couple of years ago that we used Analog video to capture those moments.


Analog Video is signaled by analog and digital video is the opposite. It is signaled by digital rather then angalog.


Some advantages of have digital video, instead of Analog video are:




1. You keep track of your video information at home on the computer.

2. There are usually several outputs so you can connect more then one digital video.



Digital video has frame rate. It's a measurement of frequency which an image produces unique consecutive images.



All digital application use frame rates but it really depends on the resolution of the image/images and the individual elements of the image (pixels.)



Resolution is the individual elements (pixels) on screen. It very important because it determines how much data needs to be transmitted and stored, so that we can view the video we want to view.



RGB is a video colour sceme, which stands for Red, Green and Blue. These are the components of colour was see on our computer screens.



There are three standards use around the world, which are NTSC, PAL and SECAM. The main didderence between the three of these standards are they are used in different parts of the world. NTSC is used in USA, Canda, Japan, Korea and Mexico. PAL is used in Australia, China, Most of Europe and South America. And Secam is used in France, Middle East and much of Africa.



The Camera you would need to use a Capture card would be a anaglog video camera. You need this so it the video captured will become a digital video.