There is a movie that is scary, it is based like in this mansion.The mansion is haunted by some kind of power.There is also a painting of the man who used to live in this mansion, then the painting fly's of the wall after this female who is in a white nightgown.

Small chance, but: Night of Dark Shadows (1971)?

Night of Dark Shadows (1971) - IMDb (http://www.imdb.com/title/tt0067491/)