[QuadList] (no subject)

[Tim Stoffel]

On Wed, 2010-06-16 at 15:13 -0700, C. Park Seward wrote:
> Type "C" is composite and only has the resolution of 4:1:1. The chroma channels are 1.5 and .5 MHz (on a good day).
> 
Type C itself is not 4:1:1. It is direct color, so the composite
waveform is faithfully recorded unlatered. It is the upstream NTSC
encoder that sets the effective chroma 'sampling'.

SMPTE 170M called for equal bandwidth I and Q channels.

Tim Stoffel