sorry for my bad english, I'll try to explain my problem in a simple way.
Nintendont user on wii, can't remember which version but I've always had this problem on every version so I don't think that matters too much. I noticed that the aspect ratio is not correct: on super mario sunshine, for example, I tried to measure what it was supposed to be a circle, but it was too high so basically an oval. Same on f-zero GX and maybe every game. I have my wii set to 16:9, component video cable, hdtv 16:9, when I run a GC game I switch the tv to 4:3 aspect ratio so I get black bars and correct aspect ratio. But the ratio is slighty off.
I tried to set the tv AND the wii to 4:3 but I got the same results.
I measured a circle in a wii game and it was indeed a circle. I noticed that black bars for GC games in 4:3 are wider than black bars for wii games in 4:3.
I have not touched video settings at all. It's that expected for GC games to have a slighty incorrect aspect ratio?