In the meantime, he took journalism exams at the then Belgian Radio and Television Broadcasting Company, where he started in September 1988 at the radio news service. After six weeks Vranckx switched to the television department. His first major assignment as a war correspondent started in 1989 in Romania during the fall of dictator Nicolae Ceaușescu. This was followed by the Gulf War of 1990-1991, the Yugoslavian wars and the major conflicts in the Middle East. In 2010 he made a seven-part series on Congo for Canvas, on the occasion of the 50th anniversary of the country's independence, under the title "Bonjour Congo."