Cozy tv did it right. They are sending a 16:9 480p broadcast since they show some 16:9 programming in SD and when they show 4:3 content, it displays in its OAR. ThisTv and others broadcast in 4:3 480p, that's why you see 4:3 in OAR and movies wrapped in black bars.
I thought that Cozi and ThisTV were 480i and not 480p?
found out that my troubles with pixelation was not my antenna, was the stb tuner not being efficient as I had thought, swapped out a zenith stb model ddt900 with newer ddt901 stb, I have not seen any breakups in a week, or so point of story is if you're having issues it could be your sucky tuner.