Amenta started his career in Il Giornale di Sicilia as a photojournalist.
In 1992 he moved to Paris where he obtained the Degree in Cinematography from the University Paris 8 and where worked for agencies and magazines, making many short films in film.
During the war in ex-Yugoslavia he filmed the documentary Born in Bosnia for French TV, presented at the festival Palermocinema and another documentary in Cuba, Lettre de Cuba, winner of the French "Rouletabille" for young filmmakers.
In 1995 he produced and directed the documentary film Diary of a Sicilian Rebel, official selection (out of competition) at the 54th Venice Film Festival. The film won 21 international awards and broadcast by RAI TV and 30 other TV stations worldwide.
In 2004 wrote and directed the documentary The Last Godfather, an Italo-French coproduction, with Mediterranean Films and ARTE France, sold to television in Norway, Belgium, Switzerland, Spain, Ireland and many other countries.
Marco Amenta won the Script Development award at The Tribeca Film Festival in 2009 for Banker to the Poor