no worries, remastering is (technically speaking) a digital transfer from the original footage (which most likely comes from film) to a higher resolution and in the process the image gets cleaned and the color/contrast go through a color correction (grading) which is manually done, sometimes scene by scene, technically what you did is of course a remastering but there's no AI that can improve the detail from ntsc or pal SD definition, simply because the LD source resolution it's too small, that's why the image looks sharper but the details are completely gone and screwed, personally i don't understand this 4k thing for a standard that is supposed to be 640x480 and displayed on a crt screen... as i said no offense, i'm a purist and mine it's just an objective observation about the image quality...