What Is Composite Video Input?
Analog video uses different signals to represent picture brightness and color. The luminance and chrominance information may be separated into separate channels or combined and connected through a single composite video input.
Luminance
The brightness information for analog television is carried by a signal known as luminance and it usually has an abbreviation of "Y".
Chrominance
The color information is contained in two chrominance signals that are abbreviated as "U" and "V".
Component Video
High-quality transport of analog video is accomplished with separate cabling of these signals, which is known as component video. In some computer applications Y, U, and V channels may be reconfigured to represent primary colors. The R, G, and B waveforms represent individual luminance for red, green, and blue.
Composite Video
For ease of connection and signal processing, the three video channels can be combined into a single cable known as composite video.
Cables and Connectors
The usual method of connecting the composite video signal is through a coaxial cable using an RCA phono plug. Audio is sent separately on one or two (for stereo) additional coaxial cables, also using phono plug connections.
Tags: Composite Video, composite video, channels combined, Composite Video Input, phono plug, using phono