<P> Warner Bros. story editor Irene Diamond convinced producer Hal B. Wallis to purchase the film rights to the play in January 1942 . Brothers Julius and Philip G. Epstein were initially assigned to write the script . However , despite studio resistance , they left to work on Frank Capra 's Why We Fight series early in 1942 . Howard Koch was assigned to the screenplay until the Epsteins returned a month later . Principal photography began on May 25 , 1942 , ending on August 3 ; the film was shot entirely at Warner Bros. Studios in Burbank , California with the exception of one sequence at Van Nuys Airport in Van Nuys , Los Angeles . </P>
<P> Warner Bros. story editor Irene Diamond convinced producer Hal B. Wallis to purchase the film rights to the play in January 1942 . Brothers Julius and Philip G. Epstein were initially assigned to write the script . However , despite studio resistance , they left to work on Frank Capra 's Why We Fight series early in 1942 . Howard Koch was assigned to the screenplay until the Epsteins returned a month later . Principal photography began on May 25 , 1942 , ending on August 3 ; the film was shot entirely at Warner Bros. Studios in Burbank , California with the exception of one sequence at Van Nuys Airport in Van Nuys , Los Angeles . </P>
where was the airport scene in casablanca filmed
where was the airport scene in casablanca filmed
at Van Nuys Airport in Van Nuys , Los Angeles
at Van Nuys Airport in Van Nuys , Los Angeles