i might need some tutorials on sub pixels please. thank you.
Essentially. Subpixel animation is moving something less than a pixel in distance. That's impossible. But if you use a midtone between the part you are moving and its surroundings it appears as if you are moving it less than a pixel. The reason for this is that the fully "opaque" original tone appears bigger than the midtone, or "transparent" tone when compared. You use the intensity of the tone to convey size, even though the actual size is the same.
Look at Jads again now, but look at how his mouth (especially) loses opacity as it shifts.
Here's a pretty bad sprite I made last summer, but it has sub-pixel animation. Granted, it wasn't very possible with my color selection, but if you were to take away the buffer above and below the eyes on the frames they move, the jumping of the eyes would have been noticeably harsher.
Edit: asdf such an idiot only idiots overlook the search function :c
here's a nice examply by ptoing:
(gleaned from topic aforeposted image was in): an easier way to put it is subpixel=aa meant to ease, really it's that simple!