From my cable provider: https://www.verizon....ng-started/faqs
- HDTV is broadcast in either 1080i or 720p
- Consumer products available for 1080p viewing are for things like video game consoles, HD DVD, or Blu-Ray disks
Interesting. I was wrongly conflating the usual set top boxes with the actual signals. Looking into it more, ATSC 1.0 only does 1080i or 720p, which explains the limitation. Interestingly, it looks like ATSC 3.0 (they're skipping 2.0) will support up to 4K HDR, so we'll be bypassing straight-up 1080p. Of course, this is going to be a slow roll-out (I remember how painfully slow the transition from SD to HD was, and even now not everything is in HD!).
One of the reasons why I recently cut the cord was poor image quality with my Xifinity X1 box. That's not much of an issue now with using pure streaming boxes, but I guess the source is still no better than 1080i. I'm just avoiding the compression artifacts from using cable versus IP.