video is typically way less than 120 Hz for sure. There are ways to get your PC video player to increase / motion interpolate your video (similar to how some TVs do it and everything somehow looks like an old soap opera). I myself have found it to work via potplayer with "avisynth processing" enabled plus various tweaks you have to lookup (reddit thread somewhere) to make it work -- presumably it would crank to 1000 hz but never tried.