National Television Standards Committee: the industry group that formulated the standards for American television. An NTSC signal is a composite video signal used by televisions and VCRs in North America and some other parts of the world. The NTSC system uses 525 lines per frame, a field frequency of 60 Hz, a 30-frame per second update rate, and the YIQ colour space. Modern NTSC encoders and decoders may also use the YUV colour space.
