[2] Mozer served as director of the 10th Tel Aviv International Student Film Festival (2004) which hosted Richard Gere (USA), Patrice Leconte (France), Catherine Breillat (France), Thomas Vinterberg (Denmark), and Nabil Ayouch (Morocco) in Tel Aviv.

In 2008 he premiered his first documentary film as a director, My First War,[6] depicting his personal experience at the 2nd Lebanon War,[7] which was premiered at the IDFA[8] 2008 and won the 2008 DocAviv Special Jury Award[9] and the 2009 Toronto Jewish Film Festival Best Documentary Award.

[10] In 2009, he directed the documentary film There Must Be Another Way[11] following the Israeli representatives at the 2009 Eurovision Song Contest, singers Noa and Mira Awad.

[13] In 2012, he directed the documentary "The Invisible Men" on persecuted gay Palestinian,[14] which received an honourable mention[15] at Docaviv Film Festival[16] and the Outstanding Documentary Feature Award at the 36th Frameline San Francisco LGBT Film Festival.

[19] Leading actors Moran Rosenblatt and Yoav Reuveni won a Special acting award as part of the 2013 TLVFest.

"This is proof against Holocaust deniers and a way to see the true face of Eichmann", Mozer told The New York Times.