Here's what I found on wiki and another site.....
The film
1933: first movie about 'Silent night, holy night'
Under the direction of Hans Marr and with Felix Gruber as Franz X.Gruber produced 1933 the first film about the world famous christmas carol. (German, english subtitles)
The story
The original lyrics of the song "Stille Nacht" were written in Oberndorf bei Salzburg, Austria, by the priest Father Joseph Mohr and the melody was composed by the Austrian headmaster Franz Xaver Gruber. In 1859, John Freeman Young (second Bishop, Episcopal Diocese of Florida) published the English translation that is most frequently sung today.[1] The version of the melody that is generally sung today differs slightly (particularly in the final strain) from Gruber's original, which was a sprightly, dance-like tune in 6/8 time, as opposed to the slow, meditative lullaby version generally sung today. Today, the lyrics and melody are in the public domain.