There is provided a playback apparatus and method, and generation apparatus and method capable of performing enlargement/reduction display of an image while preventing an occurrence of motion sickness. In a case where enlargement/reduction of omnidirectional image is selected, the playback apparatus includes a vertex data transformer that generates a 3D model for enlargement/reduction. The present disclosure can be applied, for example, to a playback apparatus and the like that generates an image obtained by perspective-projecting an omnidirectional image as a display image according to the viewer/listener's line-of-sight direction.