SD content on YouTube is blurry AF. If you use normal upscaling methods you either get a blurry or a blocky mess, computers can’t do miracles. There are ways to disguise it a bit. For example, if something was done for CRT TVs you can apply a CRT filter over the upscaled video and the blurriness will even help preserve the original look.
how is that possible, there’s loads of upscaled stuff on youtube that doesn’t suffer from such defects
SD content on YouTube is blurry AF. If you use normal upscaling methods you either get a blurry or a blocky mess, computers can’t do miracles. There are ways to disguise it a bit. For example, if something was done for CRT TVs you can apply a CRT filter over the upscaled video and the blurriness will even help preserve the original look.