In 1943 Cantacuzino produced the film "Stormy Night" (O noapte furtunoasă), a comedy based on a play by Ion Luca Caragiale directed by Jean Georgescu.

A second film, "The white squadron" (Squadriglia bianca), directed by Romanian director Ion Sava was released in 1944.

The same year, Ion Cantacuzino, as producer, selected Jean Georgescu to direct the film "A Winter Night's Dream" (Visul unei nopți de iarnă) based on a play by Tudor Mușatescu.

Another project which Ion Cantacuzino was negotiating with the Italians was a historical drama on the life of Stephen the Great, based on a screenplay by Camil Petrescu, starring Amedeo Nazzari and Alida Valli.

The plans for the construction of the center had been designed by architect Octav Doicescu and the Italian government had promised to provide the equipment.

[6][7] After the rise to power of the communist regime in Romania, Cantacuzino was blacklisted, because of both his aristocratic background and his antisoviet attitude during the war years.

He translatated various plays for theatrical performances such as Eduardo De Filippo's Filumena Marturano and George Bernard Shaw's Heartbreak House.