Hello everyone, I'm working on a project that requires me to demodulate an NTSC composite video signal into an RGB form. Despite having read a book and visited numerous websites detailing how this is performed, I am still confused. First, it seems that the colorburst signal is not in phase (or separated by some multiple of 90 degrees) with either the I or Q signal, so I'm not sure how either the I or Q signal can be demodulated without crosstalk. Second, I have heard of a method of demodulation called R-Y/B-Y, which I understand is appealing because somehow the B-Y signal is in phase with the colorburst, yet I still don't understand how this relationship is derived in a mathematical sense, or even how this particular method works. Thanks for any help with this.