In 1969 he began his film career by directing the short film "Amu Sibilou" ("Uncle Moustache") followed by "Safar" in 1970. With these films Beyzai is often supposed to be a pioneer of what is called the Iranian New Wave, a Persian cinema movement that is supposed to have spontaneously started in the late 1960s, i.e. ignoring earlier efforts by filmmakers such as Farrokh Ghaffari and Ebrahim Golestan, and includes other outstanding directors such as Nasser Taghvai, Forough Farrokhzad, Amir Naderi, Ali Hatami, Sohrab Shahid Sales, Dariush Mehrjui, Abbas Kiarostami, Parviz Kimiavi, Masoud Kimiai and Fereydun Gole among others; and soon following Khosrow Sinai, Masoud Jafari Jozani, Kianoush Ayari, Varuzh Karim-Masihi, Ebrahim Hatamikia and others.