Specialized in documentary filmmaking, Pierre Marier collaborated on projects with Yvan Patry, which brought him to shoot several documentaries in Central America, including Paz Si, Guerra No! (1986), Of Lives Uprooted (1987), The Streets of San Salvador (1991). Over a period of fifteen years, Marier directed television episodes for series which address questions of cultural diversity in contemporary Quebec. Since then, he has dedicated himself mostly to producing independent documentary films for Les films du tricycle : The Legacy of Oka Trappists (2008), Augustians, Body and Soul (2010), Fighting through the Night (2016) and directed An American, Portrait of Raymond Luc Levasseur (2015).
An American, Portrait of Raymond Luc Levasseur, 99 min, Documentaire, 2015
Ilona et Lena en Ouzbékistan, 20 min, 2009
Jeux de société, 2 x 48 min, 2005-2006
D’ici et d’ailleurs, 19 x 27 min, 2002-2004
Hors des sentiers battus, 20 x 52 min, 2000
Pareil, pas pareil, 22 x 8 min, 1999
On a marché sur la terre, 10 x 52 min, 1996
Kilomètres / Heure, 32 x 52 min, 1995
The Streets of San Salvador, 24 min, Documentaire, 1992
Of Lives Uprooted, 10 min, Documentaire, 1987
Paz Si, Guerra No!, 60 min, Documentaire, 1986