He consults as an investigative criminal historian to a number of law enforcement cold case homicide units including the NYPD, New York State Police, and Bergen County Prosecutor's Office New Jersey.

He studied with Canadian film directors Don Shebib, Clarke Mackey, and Peter Pearson at the Toronto Filmmakers Coop.

He wrote and directed two thirty-minute short drama films starring Paul Young from the Cardboard Brains: American Nights (1976) and The Sheep-Eaters (1977).

He received several Canada Council and Ontario Arts Council Grants and directed and produced a thirty-minute music documentary special on punk rock for CBC television Crash'n'Burn (Dada's Boys) (1977) with the Viletones, Teenage Head, Dishes, The Ramones and The Deadboys, filmed at CBGB in New York and the New Yorker Theater and Crash'n'Burn in Toronto;[4] (Not to be confused with Ross McLaren's independent Crash 'n' Burn made the same year on the same subject).

Vronsky frequently collaborated with documentary filmmaker Peter Lynch on Video Culture International projects and with horror film director Tibor Takacs who before he left for Hollywood worked as a D.O.P.

[8] Vronsky was the cameraman-line producer on The Hunt for Red Mercury, an investigative one-hour documentary (Discovery Channel – CTV) on nuclear weapons material smuggling in Chechnya, 1992.

[10] According to McLaren, Vronsky was working hard to determine what happened to Walker, when the Canadian government seemed to want his story to be forgotten.

Walker had told Vronsky that he had worked as an advisor for the Canadian Security Intelligence Service (CSIS) ferreting out genocidal Khmer Rouge perpetrators infiltrating Canada among legitimate refugees from Cambodia during the 1980s and 1990s.