As well as recounting the history of Vienna's black residents, Podgorski said the film also featured contributions from the city's black community on "the deep-rooted prejudices" they still face.
In a statement to Austrian media, ORF said: "The documentary as delivered did not meet the commissioned concept in terms of its form, content and technical aspects."
"After reviewing the film, the transmission date was therefore postponed and the director has been asked to rework the film".
Podgorski said he had not been told of any such objections.