Te Rangi Hiroa (Dr Peter Buck) joined them for a few days at Koriniti.
The scenes record games, crafts such as dyeing and weaving, cultivation, fishing, the making of hinaki for eels, the setting of traps and divinatory rites such as niu and raurau.
Mr Wharerau said back in the 1920s, film was silent and the local cinema experience relied on a narrator and musicians.
The Whanganui screening will follow this spirit, narrated by Mr Wharerau and accompanied by traditional musical instruments - taonga pūoro.
Scenes of Māori Life on the Whanganui River and other films shot by James McDonald are part of the Taonga Māori collection of Ngā Taonga Sound & Vision.
The film screens tonight (July 19) at 6pm at the Whanganui Regional Museum, and entry is by koha.