If you go to the video, and set it to 60 fps (either 720p60 or 1080p60), and then move the video forward frame by frame by using the "." key, you will see that the game itself updates at 60 fps as well. There is really no doubt that the footage in the video is 60 fps, although you can't rule out the (rather unlikely imo) scenario where they transition from 60fps to 30fps.
did this, definitely 30fps