Born in Phnom Penh, he is a renowned Cambodian filmmaker and documentarian, known for exploring themes of memory and the aftermath of the Khmer Rouge regime. Having survived the Cambodian genocide, his works often focus on the impact of this period on individuals and society. He gained international recognition with films like "The Missing Picture," which received accolades for its innovative storytelling using clay figures. He is celebrated for his contributions to preserving Cambodian history and culture through cinema.