Liebman made his first impression with audiences at age 13, when French director
Bertrand Blier discovered him and cast him as Christian in the 1978 film
Get Out Your Handkerchiefs, where he is credited simply as Riton. While Liebman said he had strained relations with stars
Gérard Depardieu and
Patrick Dewaere, Blier defended him during and after filming. Liebman made his directorial debut with
Je suis supporter du Standard (2013). ==Filmography==