It was a very unique case where in the final round of the Prague Chess Festival blitz, the arbiter was called to make a decision. The arbiter had no way to tell what was the accurate result of the game. But he saw that there was a ChessBase India monopod standing there with the game being recorded. He asked for the video to be replayed and then gave the result which decided the winner of the event.
Video: ChessBase India
Video shot by Shahid Ahmed and Prajwal Bhat