> Analogue interlaced-scan TV systems like PAL and SECAM were actually ''higher'' definition in relation to NTSC by visual line count, although the former's 25Hz refresh rate was noticeable for flickering compared to NTSC's ~30Hz, which was much closer to the human eye's comfort level.

Yet motion pictures are still stuck at 24 FPS to this day and there are even people who have strong opinions about this being a good thing.

Also just because NTSC was 29.97 Hz doesn't mean that the video content actually was - almost everything shot on film was actually effectively 23.97 Hz - telecined to 59.94 fields per second but that doesn't actually change the number of unique full frames.