The present disclosure includes systems and techniques relating to changing video playback rate. In general, one aspect of the subject matter described in this specification can be embodied in a method that includes providing a user interface for a digital video editing system, the user interface including a graphical representation of playback rate and playback duration for a sequence of digital video, and the user interface including defined points that reference respective frames in the sequence of digital video; receiving input specifying a change in playback rate for the sequence of digital video; and showing the change in playback rate and a corresponding change in playback duration for the sequence of digital video, the showing including moving one of the defined points in accordance with a new temporal position of a corresponding frame referenced by the one of the defined points.