[WorldMaker]

One of the terms was interlaced, the nearly forgotten "i" next to something like 480i (versus 480p).

Individual magnetic lines of a VHS tape would only describe half a frame and the two halves would be interlaced back together.

[midasuni]

I think one major network in the US is 720p60, but the vast majority of broadcast transmissions globally is 1080i25 or 1080i30*

Of course sadly so much content is produced at 1080p24 nowadays for that “film” effect it’s rather meaningless for display purposes.

Online of course it tends to be p50 or more commonly p60 (even in 50hz countries). YouTubeers tend to be able to afford more lights and clearer microphones than big budget productions too.

* 30000/1001

[pjc50]

Well, that's just how the underlying PAL/NTSC signal worked.

[WorldMaker]

Right, and the fact that there were two different signal standards and VHS was a leaky abstraction that mostly just encoded the signal as-is all adds to the complication of any "generic magnetic tape reader" and hoping to get useful digital data back from that.