Raamat graduated from the Estonian Art Institute in 1957 as a painter and between 1957–1971 worked as an artist and director in feature films based in Tallinn. In 1971, he founded his own animation studio, Joonisfilm, a division of the Tallinnfilm studio, and commenced making his own films. From 1989–1995 he was artistic director of Studio B which he established, employing some 120 people.
One of his notable films is "Põrgu" (Hell), released in 1983, that he based on the art of fellow Estonian Eduard Wiiralt from the 1930s.
Since the early 1990s he has been involved with many documentaries in Estonia. In 1998, he worked with journalist Martti Soosaar in producing the documentary "Enn Põldroosi härrasmeeste seltskond".