Quote:
Originally Posted by benman94
S-Video separates the luma and the chroma, but you're still limited to ~330 lines luma resolution, and the chroma resolution is still constrained with S-Video. Even S-Video doesn't live up to the full potential of the DVD standard.
Perhaps ignorance on the part of consumers played a role? I know my parents had a 40 inch Trinitron with component in, but never the component inputs. My father used the composite video cable that came with the first DVD player he bought around 2001 or 2002.
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With baseband (S video) input instead of RF, you are not limited to 330 lines, but to whatever the video output amplifier bandwidth is in the TV, the same as with component video, assuming the luminance signal is input at a point beyond any chroma trap.
As for 720 pixels, it comes from the earliest studio digital video recorder standard, D1, which used a fortuitous common clock frequency for both 525 line/60 Hz video and 625 line/50 Hz video. Since conversions always produce some degradation, it was much better to retain the same pixel numbers for DVDs.
https://en.wikipedia.org/wiki/D-1_(Sony)