[2] Engebretsen was primarily active as a film editor from 1941 to 1962.

The films that he edited include Den forsvundne pølsemaker (1941), Jeg drepte!, (1942), and Line (1961).

[3] He received the Norwegian Film Critics Award (Filmkritikerprisen) in 1961 for his editing of Line.

[4] In 1954 he directed the films Troll i ord and I moralens navn.

Engebretsen is buried in the Cemetery of Our Saviour in Oslo.