A moving image encoding apparatus comprises a detection unit configured to detect motion information in units of blocks from a moving image; a determination unit configured to determine a region of interest in the moving image based on a first region determined through processing for detecting an object from an image, and the motion information; a control unit configured to perform control such that a quantized value of a block determined as being the region of interest is set to a value lower than a quantized value of a block determined as not being the region of interest; and an encoding unit configured to perform compression encoding on the moving image based on the quantized value set by the control unit.