Krakatoa is a 1933 American Pre-Code short documentary film produced by Joe Rock. It won the Academy Award in 1934 for Best Short Subject (Novelty). Educational Pictures (or Educational Film Exchanges, Inc.) was the film distributor of the film. This film was notable for overwhelming the sound systems of the cinemas of the time. In Australia, the distributors insisted on a power output of 10 watts RMS as a minimum for cinemas wishing to show the film. This was then considered a large system, and forced many cinemas to upgrade. A revised version was made in 1966 for the Library of Congress.