Are Arnold Antonin and Baltasar Kormákur both directors?
yes
Baltasar Kormákur
Baltasar Kormákur Samper (born 27 February 1966) is an Icelandic actor, theater and film director, and film producer.
 He is best known for directing the films "101 Reykjavík", "Hafið", "A Little Trip to Heaven" (starring Julia Stiles and Forest Whitaker), a film based on the book "Mýrin" "(Jar City)" by Arnaldur Indriðason, "Contraband", "2 Guns" (starring Mark Wahlberg and Denzel Washington) and "Everest".
 His father is the Spanish painter Baltasar Samper and actor Baltasar Breki Samper is his son.
Arnold Antonin
Arnold Antonin (born 1942 in Port-au-Prince, Haiti) is a Haitian film director.
The Oath (2016 film)
The Oath (Icelandic: Eiðurinn ) is a 2016 Icelandic thriller film written by, directed and starring Baltasar Kormákur.
 It was screened in the Special Presentations section at the 2016 Toronto International Film Festival. Contraband (2012 film)
Contraband is a 2012 American crime thriller film directed by Baltasar Kormákur, starring Mark Wahlberg, Kate Beckinsale, Ben Foster, Caleb Landry Jones, Giovanni Ribisi, Lukas Haas, Diego Luna and J. K. Simmons.
 The film is a remake of the 2008 Icelandic film "Reykjavík-Rotterdam" which Baltasar Kormákur starred in.
 It was released on January 13, 2012 in the United States by Universal Pictures. Blueeyes Productions
Blueeyes Productions was an Icelandic film production company.
 The company was founded in 1999 by director Baltasar Kormákur and his wife Lilja Pálmadóttir.
 After producing 12 films, RVK Studios has superseded the company and movies like Everest and Fúsi were then produced by the name RVK Studios. Everest (2015 film)
Everest is a 2015 British-American biographical adventure film directed and co-produced by Baltasar Kormákur, co-produced by Tim Bevan, Eric Fellner, Nicky Kentish Barnes, Tyler Thompson and Brian Oliver and written by William Nicholson and Simon Beaufoy, adapted from Beck Weathers' memoir "Left for Dead: My Journey Home from Everest" (2000).
 It stars an ensemble cast of Jason Clarke, Josh Brolin, John Hawkes, Robin Wright, Michael Kelly, Sam Worthington, Keira Knightley, Emily Watson, and Jake Gyllenhaal.
 It is based on the real events of the 1996 Mount Everest disaster, and focuses on the survival attempts of two expedition groups, one led by Rob Hall (Clarke) and the other by Scott Fischer (Gyllenhaal). Reykjavík-Rotterdam
Reykjavík-Rotterdam is an Icelandic film directed by Óskar Jónasson and starring Baltasar Kormákur. Baltasar Breki Samper
Baltasar Breki Samper (born 22 July 1989), sometimes referred to as Baltasar Breki Baltasarsson, is an Icelandic actor.
 He is the son of Icelandic director Baltasar Kormákur.
 Before graduating from the Icelandic Academy of the Arts in 2015 Samper helped his father on several films as second assistant director.
 He is known for his role as Hjörtur in the Icelandic TV series "Trapped". Jar City (film)
Jar City (Icelandic: Mýrin – "The Bog") is a 2006 Icelandic film directed by Baltasar Kormákur.
 It is based on "Mýrin", a novel written by Arnaldur Indriðason and released in English as "Jar City". White Night Wedding
White Night Wedding (Icelandic: "Brúðguminn" ) is a 2008 Icelandic film directed by Baltasar Kormákur.
 The bittersweet comedy, about the never-ending search for love and happiness, takes place in Flatey, Breiðafjörður, western Iceland.
 The film is loosely based on the play "Ivanov" by Anton Chekhov.