Hubert was trained as a cameraman at the Marey Institute in Vincennes . At the age of 18 he was already working independently, and from an early age he worked with well-known directors such as Jean Renoir , Jacques Feyder and Max Ophüls .
When war broke out in 1939, he worked temporarily in the film department of the French armed forces. During the German occupation he developed his own style with dark, painting-like black and white compositions. The highlights are Jean Delannoy's love film The Eternal Bann (based on Jean Cocteau ), Marcel Carné's allegory The Night with the Devil and especially Carné's classic Children of Olympus .
Hubert made numerous films in the 1950s and early 1960s that corresponded to the style of the mass cinema that was common at the time and received little attention.
