Hey, I downloaded and installed the latest version of Not64, and now there are black borders on the right and left side of my tv screen. This wasn't on the old version. Is there a way to fix this?
Can I recommend that you don't try to "fix" something which isn't broken? N64 games were made at a time when 4:3 TV screens were by far the most common kind people had in their homes. Your modern widescreen TV is
wider than an old TV, so the ideal way to deal with the difference is to have the picture fill a 4:3 area and leave the rest blank. The picture isn't
supposed to fill up a whole widescreen TV, so if you insist on stretching the picture, you're just making it display wrong.
For most games, the best thing you can do is have Not64's Video settings on "4:3" and the same thing on your TV. This displays games the way they were intended.
If, for whatever reason, your TV can't do 4:3, the next-best thing is the "Force 16:9" setting. This inserts the black bars, which cuts into your picture's resolution somewhat in exchange for displaying in the correct ratio.
The "16:9" setting in Not64 kind of barely does anything. The display of the games isn't changed, just the Not64 menu. There's not much reason to use this option, except ...
A very small handful of N64 games had widescreen support built in (check their in-game options menus). From memory, there's GoldenEye, Perfect Dark, The World Is Not Enough, Banjo-Tooie (not Kazooie). I think Starshot: Space Circus Fever, too, but that game suuuuuuuuuuucks. (Sorry, that game.)
Jet Force Gemini gets an honorable mention. On the N64, It supported a letterboxed widescreen mode (displaying in a 4:3 area but with black bars on the top/bottom), but the way this was implemented isn't supported by Wii/Not64, so enabling it actually gives you proper anamorphic widescreen. Bonus. (
EDIT: I think the same is true for Mickey's Speedway USA. I never tried it on hardware, but the widescreen seems to work the same as Jet Force Gemini--and these two games were by the same internal teams at Rare.)
If you're playing one of this small handful of games, you want either the 4:3 or 16:9 settings in Not64, with your TV set to widescreen, too. You absolutely
don't want "Force 16:9" on Not64 or your TV set to 4:3, which is displaying the games wrong but in the opposite direction to the above.