@sjw@neckbeard.xyz best I can find is 720p, you know the original video is from a psp game, right? The console could only output 480x272p so you're not going to find much above that without upscaling it yourself. Alternatively there's also this ungodly MH: World mod I found thats's in 1080p60 https://www.youtube.com/watch?v=oSeFGjjgHqk