This video is passing through the Internet. Four “trampoline” devices set up to redirect a hit ball back to the batter.
The batter hits into one trampoline, it bounces the ball to a second, then a third and finally to the fourth. The fourth trampoline bounces it back to the batter, who hits the ball back to the first trampoline.
It looks possible; but doubtful it actually happened that way. You be the judge.
Totally fake. The ball hits the first net in the same place every time.