Nah, not film rates [1], video: NTSC is 30fps and PAL is 25fps because the cathode ray tube scan rate was built around AC power cycles. When low fps truly Hz. Sorry.

[1] generally 24fps because that is culturally what film looks like and people get very weird whenever anyone tries to fuck with it

I'll allow your joke, but NTSC is 60 fields per second, and PAL is 50. Certainly a large portion of content came from film and in PALworld would be shown as even and odd halves of a frame, or in NTSCland as 3 halves of a frame, then two halves...

But actually interlaced content exists too. Each field is independent, there's no frames to speak of.

Early video game systems based on NTSC/PAL ran at 60 fps or 50 fps, but ran off-spec signals to always hit the same half of the display lines (odd or even). 4th gen systems (genesis/mega drive and snes/sfc) had a few games that used interlaced output; later systems had many, running PAL@60Hz became a common option too.

Not only was it built around AC, the technology at the time only allowed for roughly 1/2 the AC cycles rate. People think there was some great reasoning behind 30fps. It was just what was available, essentially.