Monitoring video output system and monitoring video output method

The invention provides a monitoring image output system and a monitoring image output method. Provided is a monitoring image output system capable of displaying a monitoring image of image data captured using a camera mounted on a moving body, and capable of displaying the monitoring image with respect to a wide range of locations. A monitoring video output system according to the present disclosure is provided with: a plurality of cameras mounted on each of a plurality of moving bodies; a storage device for storing image data and position data for each of the plurality of cameras; and a processor. The processor executes: a process that accepts the monitored area as an input; an image acquisition process of selecting an image acquisition camera from the plurality of cameras for each predetermined time width, and acquiring image data within the time width of the image acquisition camera; and a process of outputting the image data acquired for each time width. In addition, when there are more than two cameras a