Here is a description of the video: The video shows a brightly lit indoor tennis court with a blue surface. There is a net dividing the court into two sides. Three people are actively playing a match. One person is standing on one side of the court, while two people are on the opposite side. All three players are holding rackets. A fourth person is standing on the sidelines watching the game. The court is enclosed by a fence. The video is taken from behind a glass wall, which slightly distorts the view. Overhead, the ceiling is visible with a network of metal beams and lighting fixtures. A large sign that says "ПЕРВЫХ" is visible above the courts. There are some extra tennis balls littered around the court.