An analogue video format that consists of colour information ‘piggybacked’ onto a black-and-white transmission signal. The format is a legacy of when colour television was first developed to be compatible with the existing black-and-white technology. Colour television systems (NTSC in the US, and PAL in the UK) transmit colour information in the form of a sub-carrier signal along with the main black-and-white picture and sound information. Compare component video.
Subjects: Media Studies.