Inside Macintosh: QuickTime Components
Movie controller components provide functions that allow your application to work with temporal aspects of movie controllers. You can use the MCSetDuration function to set the duration of a movie controller to some arbitrary value. The MCGetCurrentTime function lets you retrieve the time value represented by the indicator on the movie controller's slider.
The MCSetDuration function allows your application to set a controller's duration in the case where a controller does not have a movie associated with it.
pascal ComponentResult MCSetDuration (MovieController mc,
TimeValue duration);
Your application can use the MCGetCurrentTime function to obtain the time value represented by the indicator on the movie controller's slider. This time value is appropriate to the movie currently being affected by the movie controller. You can also obtain the time scale for this time value.
pascal TimeValue MCGetCurrentTime (MovieController mc,
TimeScale *scale);