The film is part of James A. Fitzpatrick's documentary series "Traveltalk" ("The Voice of the Globe"). It was released in 1936.
Because of the great demand and the discussions surrounding the video, I have created together with Martha Gomes a webpage designed to capture this phenomenon. It additionally contains three articles about the video, which had appeared in the Brazilian media. It also features photos of today's Rio with screenshots from the original Fitzgerald video:
The film features the now legendary "PalĂˇcio Monroe". The history of this building is decribed here (in portuguese):
The "traveltalks" predecessor of the "City of Splendour" was released in 1932. It was titled "Rio the Magnificient" and it is also featured on youtube: