The lifetime of a motion picture is the margin through which supply ad
justs to market demand due to demand-invariant admission prices and fi
xed seating capacity. The lifetimes of a sample of 493 motion pictures
that were exhibited at cinemas in Hong Kong during 1994-1996 are exam
ined. It is found that the hazard rate is an increasing function of ti
me, and that the type of movie and the initial box office revenue are
economically and statistically significant determinants of a movie's l
ife length.