Television Under The Swastika
Das Fernsehen unter dem Hakenkreuz (original)
A history of Nazi television programming and technology, from 1935 to 1944.
Starring Peter Buchholz
It's a documentary and history movie, and has a rating of 6.9 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from United Kingdom.