 Fox's 2012 World Series coverage would include a camera whose replays could generate as many as 20,000 frames per second, the most ever seen on Fox—and up from about 60 frames per second on regular replays.The camera would allow viewers "to see the ball compress" when batted, similar to how cameras now show golf balls getting compressed when struck.The technology for the camera originated with the U.S. military looking at replays of missile impacts.