Composite is the lowest common denominator of video signals. A composite signal
runs all color and brightness information on a single cable, resulting in lower-quality
video compared to the quality of other formats. Nearly all video devices have a
composite input and output. This format uses a single RCA or BNC connector.
In professional editing environments, composite video signals are most commonly
used for troubleshooting, for menu outputs, and for low-quality preview monitoring.
For consumer and home use, composite signals are often used to connect VCRs or
DVD players to televisions.