Information processing system, information processing method, and medium

An information processing method for controlling a virtual camera disposed in a virtual space to generate a virtual viewpoint video, comprising:

• obtaining a second camera parameter that is different from a first camera parameter and indicates a position and an orientation of the virtual camera, wherein the first camera parameter is set in advance, stored in a storage, and indicates an orientation of the virtual camera and a position of a gaze point corresponding to the virtual camera;
• and
• performing control for changing the position and orientation of the virtual camera indicated by the second camera parameter based on the second camera parameter and the first camera parameter,
• wherein the position and orientation of the virtual camera after completion of the change are determined based on the second camera parameter and the first camera parameter.

A non-transitory computer-readable medium storing a program executable by a computer to perform a method for controlling a virtual camera disposed in a virtual space to generate a virtual viewpoint video, comprising:

• obtaining a second camera parameter that is different from a first camera parameter and indicates a position and an orientation of the virtual camera, wherein the first camera parameter is set in advance, stored in a storage, and indicates an orientation of the virtual camera and a position of a gaze point corresponding to the virtual camera;
• and
• performing control for changing the position and orientation of the virtual camera indicated by the second camera parameter based on the second camera parameter and the first camera parameter,
• wherein the position and orientation of the virtual camera after completion of the change are determined based on the second camera parameter and the first camera parameter.