After his debut in cinema, Rebengiuc became a regular presence on screen. His next film was the 1967 "Nay-dalgata nosht", by Bulgarian director Vulo Radev, where he starred opposite Nevena Kokanova as the British prisoner. Two years later, under the direction of Mihai Iacob, Rebengiuc starred in "The Castle of the Condemned". During the late 1960s and 1970s, he was present in two screen adaption from works by Romania's classical writer Ion Luca Caragiale ("Cadou" and "O scrisoare pierdută"). In 1972 and 1973, he starred two adaption of Manole Marcus' adaptations of scripts by Titus Popovici: "Conspiraţia" and "Departe de Tipperary". Also in 1973, he appeared in Gheorghe Vitanidis' "Dimitrie Cantemir", and, the following year, had one of the main roles in Constantin Vaeni's "Zidul". Rebengiuc also had a role in the 1976 "Tănase Scatiu" (an adaptation of Duiliu Zamfirescu's "Comăneştenilor" literary cycle), which was his first collaboration with director Dan Piţa. Two years later, he appeared in Marcus' "Cyanide and the Rain Drop", in Vaeni's "Buzduganul cu trei peceţi", and in Piţa's "The Prophet, the Gold and the Transylvanians". In 1979, he was in "The Man in the Overcoat", directed by Nicolae Mărgineanu.