default or selected kernelversion does not have config value CONFIG_NTSC_YCBCR.
Result is shown for kernelversion 6.7-rc3

NTSC 720x480 YCbCR input

configname: CONFIG_NTSC_YCBCR

Video mode support
└─>NTSC 720x480 YCbCR input
In linux kernel since version 2.6.38 (release Date: 2011-03-14)