The image being captured is scanned very frequently.
At least 25 times a second is required for video of good quality.
Most of the video material today is captured with analog equipment like a regular VHS camcorder. Like analog images, also analog video has to be coverted to digital before being usable in computers. But before going into digital video, let's studdy some of the aspects of the analog counterpart.
How does a video camera work? As with all cameras, the image being captured is continuously reflected on the lens of the camera. To be able to transform a changing scene into an electrical signal, a video camera has to have a sensing point that scans the hole area of the lens fast enough to produce at least 25 images per second.
The image being captured is scanned very frequently.
At least 25
times a second is required for video of good quality.
