Karim and Khaled Al-Sobky were on release after each paid a 10,000-pound bail, after they were arrested in a car in which heroin was found.
A verdict was issued against each of them, with 15 years imprisonment, and a fine of 50 thousand pounds each.
Al-Sobky's two sons were arrested after the wedding of artist Ahmed Fahmy and actress Hana Zahid.
Director Karim El-Sobky and his brother Khaled were among the invitees when a constant security patrol intercepted them in the Qasr al-Nil area in Cairo, where the wedding was taking place, and by searching the car in which they were traveling, several rolls of heroin were found inside.