On my 4K set if I feed it 480p it non-integer scales it to 2160p. Not very desirable, a 4.5x scale on the vertical.
However, if I run 480p through an OSSC and double it to 960p, my set doubles that to 1920p with thin black bars to fill the image out to 2160p. Much better!
Doing this with Wii 480p games utterly destroys playing them on a Wii U (chroma sampling issues and internal non-integer scaling of the vWii mode regardless of overscan settings or output mode, and that's before the set gets ahold of it!)
This Xbox adapter (and Gamecube HDMI solutions), ideally, at some point we will see models that will scale the image in a windowboxed fashion to 1080p and 4K.
Hey, I can dream.
Edited by Beer Monkey, Tue Mar 27, 2018 7:39 AM.