This document describes techniques and apparatuses for small-screen movie-watching using a viewport. These techniques enable viewers to experience movies and other media programs using a small screen as a viewport to the movie rather than dramatically compressing or cropping the movie to fit the small screen. A viewer may select whatever portion of the movie imagery he or she desires to experience through the small screen at a size sufficient to perceive details of plot elements and an environment in which the plot elements interact. Thus, the viewer may follow plot elements central to the plot while also exploring the environment that provides context for these plot elements.