Advancing Reliable Synthetic Video Detection: Insights from the SAFE Challenge. - Kirill Trapeznikov; Gabriel Mancino-Ball; Jonathan Li; Paul Cummer; Jai Aslam; Danial Samadi Vahdati; Tai Nguyen 009; Matthew C. Stamm; Peter Bautista; Michael Davinroy; Laura Cassani; Jill Crisman (CoRR, 2026)