Excuse me, how to switch between shots when shooting with several cameras?

In the recording scene of large-scale activities, there are usually 3 to 30 cameras. Here is a brief introduction to the status of the seat:

Moderator's position: the field of vision is basically fixed. There are n swimming positions, 1-3 spectator positions and 1 close-up positions (sometimes with rocker arms). All cameras are connected to the switching station. Even the screen of each camera will be displayed on the monitor in the director's computer room, and each machine will be numbered. The director will direct the director to switch the camera screen: "No.65438 +0. . . "At this time, the picture output by the TV signal is the picture ordered by the director to switch.

Photographers have their own activity areas and task arrangements in advance, including framing requirements. If a plane is required to take a long shot and a middle shot, you can't use close-ups and the like at will, so that the director can basically know what to do before shooting.

Audio pickup is not affected by picture conversion.