There was a lot of commotion online when the rumors of the Galaxy S8 having 1000 fps video surfaced. However that turned out to be pure unfounded speculation. Still the phone did offer slow motion of 240fps at 720p which is not bad for a phone but hardly flagship these days. Still that does not detract from the ability to capture cool slow-mo shots.
The quality is close to 720p on the Galaxy S8 but not entirely there. We see some softness, aliasing and moire in the shots with a tendency to be more apparent in diagonal lines and repeating detail textures. Still the quality is on par with the iPhone 7 and Google Pixel XL phones. We have gathered a few samples for you to judge.