SCART, S-Video, and NTSF RF to VGA.... in Classic Console Discussion Posted March 6, 2020 On 3/5/2020 at 8:38 AM, CatPix said: They both have analog signals but analog video television RGB is interlaced (meaning that when displaying a picture, it only draw the odd lines, then the even lines at the next refresh). VGA is progressive, meaning that it draw each line down. Most modern VGA display doesn't understand interlaced video signals. 80's and early 90's VGA display may understand them as a few VGA video cards were producing interlaced video signals (I have a 286 computer with a video card able to display a 1024*768 interlaced video signal) but it's not a common rule. An active converter is required to double the lines if your monitor isn't compatible. I kind of figured as such. But the main question is is the conversion time from interlace to progressive significantly less than a hundred microseconds. The quickest non CRT TV has about 9 milliseconds of draw time. So 1% of that would be about a hundred microseconds. and most people whose primary concern is the actual gameplay would probably agree that gaining 100 microseconds of ping to chop off 10 milliseconds of draw time ping is a good trade-off for literally everything except light gun games . so is the conversion time quick enough work makes sense the play non CRT old school games on a VGA CRT? By the way, my Apple Macintosh from 2008 has an output that could go to composites and S video and my monitor and TV could display simultaneously and the TV is ahead of my built-in monitor. at first it starts as a progressive manager so maybe a few monitors to have built-in progressive interlace changers. So I think a 2008 monitor would be able to do interlaced as well as progressive, that an old-school VGA CRT should also deal with progressive and interlace mode correctly. but if not it's worth the pay the few extra bucks and start off with the active converter.