I used the Sunshine game streaming software and the WiiU homebrew port of Moonlight to get game streaming working on a WiiU gamepad. It’s sort of like a bootleg Steam Deck, and it works surprisingly well, but it mostly just made me want a Steam Deck.
No. NTSC is 525 lines and PAL is 625. This includes the overscal lines.
NTSC has a visable line count of 480, hence 480i. PAL has 576 lines visable, or 576i.