Here are some interesting things you might not know about video.... why not book a course and learn more.
All interlaced TV systems use an odd number of lines so that interlacing will be automatic.
SD video has a pixel count of just over 414,000 pixels, which means it has a resolution of just over 0.4M pixels.
The eye sees colour in Red Green and Blue (RGB), but our brains think as Hue, Luminance and Saturation (HLS), so a conversion takes place between eye and brain.
Most current video systems work with component video. This uses Luma and two ‘colour difference’ signals which are mathematical values containing pure colour information and can be displayed in a way that allows us to perceive hue and saturation.
The ‘Brightness’ control on a TV also appears on most broadcast equipment under different names, such as Setup, Sit, Black Level, Black Pedestal or Lift.
‘Contrast’ can be called Video Level, Exposure or Gain and is also mechanically controlled by the iris of a camera.
When working with component video, we can create nearly 6 times more colours than can be displayed on a monitor.