"The Missing Picture" by Rithy Panh has been named the best film in the Un Certain Regard sidebar at the Cannes Film Festival.
The film uses clay figures to recreate Panh's childhood under the Khmer Rouge regime in Cambodia.
The jury was headed by Danish director Thomas Vinterberg and also included actresses Ludivine Sagnier and Zhang Ziyi.
In a letter to Cannes' Thierry Fremaux and Gilles Jacob, Vinterberg wrote, "One of the finest achievements in filmmaking is to create unforgettable moments — moments that stay with us — as a collective memory — as a collective mirror of our existence.
"Clay figures, extreme beauty, violence, homosexual blow jobs, systematic humiliation of the human kind, Léa Seydoux’s legs, great Brando imitations are just some of the unique images that will follow us for a while.
"This selection was insistingly unsentimental, and still poetic. It was political, highly original, sometimes disturbing, diverse and first of all, very often — unforgettable.”
The Palme d'Or, and other prizes for films in the main competition, will be announced on Sunday.
The Un Certain Regard jury awards:
Prize of Un Certain Regard: "The Missing Picture" by Rithy Panh
Jury Prize: "Omar" by Hany Abu-Assad
Directing Prize: Alain Guiraudie for "Stranger by the Lake"
A Certain Talent Prize: The ensemble cast of "La Jaula de Oro" by Diego Quemada-Diez
Avenir Prize: "Fruitvale Station" by Ryan Coogler