The family of an Aboriginal woman who died after hitting her head in a police cell wants the world to watch the distressing footage of her final conscious hours.

CCTV captures Tanya Day falling five times in a cell at Castlemaine police station within a 2½-hour period after she was arrested for being drunk on a train on December 5, 2017.

Coroner Caitlin English released the footage at the request of the Day family on Friday.

"The privacy of Ms Day, regarding trauma and stress, is not an issue here because unusually Ms Day's family are advocating strongly for the release of the footage," she told the Coroners Court.