This film is not a reality-based representation of Theresienstadt under Nazi rule in WWII. It is a state-financed propaganda film, that the Nazis wanted to use to deceive the international public about the fate of the Jews. Actually, the term 'documentary' was introduced by the Nazis themselves, as part of the deception strategy. In the same way Theresienstadt was called a "Ghetto", but in fact it was a concentration camp and a transit camp to the extermination camps. The film is completely staged and was supervised and controlled by the Nazis, therefore it is difficult to name a single person as the 'director' in this context.
The original film was approx. 90 min. long. Only approx. 20 minutes of some sequences, the screenplay, stills and drawings of lost scenes are available. The complete version vanished during the end of WWII and is considered lost.
The supervising SS-Nazis demanded that only music by Jewish composers should appear in the film.
Unlike other German WWII propaganda films, this documentary was never intended for release in Nazi Germany, because its 'humane' representation of Jews was too different. The plan was to show it to foreign leaders, deceive them, and then distribute it outside of Nazi Germany, but this didn't happen anymore.
After the film was finished on 28 March 1945, it was only shown 4 times before the end of WWII: In March or April 1945 one time in Prague to an exclusive audience of top SS members and then three times in the Theresienstadt Concentration Camp itself to a selected audience of Swiss diplomats, Jewish leaders and/or delegates of the 'International Red Cross'.