Are Hans Weingartner and Mario Bava both directors?
yes
Hans Weingartner
Hans Weingartner (born 2 November 1977) is an Austrian author, director and producer of films.
 Born in Feldkirch, Vorarlberg, he attended the Austrian Association of Cinematography and earned a diploma as a camera assistant.
 Later, he did a postgraduate at the Academy of Media Arts KHM in Cologne, Germany.
 He also has studied neuroscience at the University of Vienna and graduated from the neurosurgical department at the Free University of Berlin’s Steglitz Clinic.
Mario Bava
Mario Bava (31 July 1914 – 27 April 1980) was an Italian director, screenwriter, special effects artist, and cinematographer from the "golden age" of Italian horror films.
 His work kick-started the giallo film genre and the modern "slasher film".
 His son Lamberto Bava later went on to become a noted horror film director in his own right.
Hercules in the Haunted World
Hercules in the Haunted World (Italian: Ercole al centro della terra) is a 1961 Italian sword-and-sandal film directed by Mario Bava.
 British bodybuilder Reg Park plays Hercules while British actor Christopher Lee appears as Hercules' nemesis Lico.
 Shooting at Cinecittà, director Mario Bava used some of the same sets from the earlier "Hercules and the Conquest of Atlantis" which had already starred Reg Park. Hut in the Woods
Hut in the Woods (German: "Die Summe meiner einzelnen Teile" ) is a 2011 German drama film directed by Hans Weingartner. Lamberto Bava
Lamberto Bava (born 3 April 1944) is an Italian film director.
 Born in Rome, Bava began working as an assistant director for his director father Mario Bava.
 Lamberto co-directed the 1979 television film "La Venere d'Ille" with his father and in 1980 directed his first solo feature film "Macabre". Reclaim Your Brain
Reclaim your Brain (German: "Free Rainer – Dein Fernseher lügt" ) is a 2007 German film directed by Hans Weingartner. Black Sunday (1960 film)
Black Sunday (Italian: "La maschera del demonio"), also known as The Mask of Satan and Revenge of the Vampire, is a 1960 Italian gothic horror film directed by Mario Bava from a screenplay by Ennio de Concini and Mario Serandrei (with uncredited contributions by Bava, Marcello Coscia and Dino Di Palma), and starring Barbara Steele, John Richardson, Arturo Dominici and Ivo Garrani.
 It was Bava's directorial debut, although he had completed several previous feature films without receiving an onscreen credit.
 Based very loosely on Nikolai Gogol's short story "Viy", the narrative concerns a witch who is put to death by her own brother, only to return 200 years later to seek revenge on her descendants. The Edukators
The Edukators (German: Die fetten Jahre sind vorbei ) is a 2004 German-Austrian crime drama film directed by Hans Weingartner.
 It stars Daniel Brühl, Stipe Erceg and Julia Jentsch as three young, anti-capitalist Berlin activists involved in a love triangle.
 The friends, calling themselves "the Edukators", invade upper-class houses, rearrange the furniture, and leave notes identifying themselves. Eugenio Bava
Eugenio Bava (4 June 1886, Italy – 23 October 1966, Rome, Italy) was an Italian film cinematographer and is the patriarch of the Bava family.
 His son was acclaimed film director Mario Bava and his grandson is Italian horror film director Lamberto Bava. The White Sound
The White Sound (German: Das weisse Rauschen ) is the directorial debut of Austrian director Hans Weingartner and co-director and screenplay writer Tobias Amann.
 The film was the idea of both students as part of a separate project at the Academy of Media Arts Cologne.
 The film premiere was at Cinenova-Kino in Cologne-Ehrenfeld and the film appeared throughout German cinemas on 31 January 2002.