The only one I am aware of is entitled "Central American Rail Adventure (Parts 1 and 2) produced by Berkshire Productions about 1990. It was made from 16mm color film taken by George Leilich on two trips to Central American with Central American Rail Tours in 1972 and 1973. I have no idea whether it is still available. Sunday River Productions also shot some film on those trips, but I never saw any videos released. The picture below is from the 1973 trip George filmed.