"There are several French nationals among the victims. So far we only know of two Argentine victims," La Rioja province government spokesman Disel Cuneo told AFP.
Another provincial spokesman, Horacio Alarcon, said that the two helicopters appeared to have collided during filming.
"There are no survivors," he added.
Alarcon said the weather conditions were good and the cause of the crash was unknown.
The crash yesterday happened in a mountainous part of La Rioja, whose scenic landscapes are popular with tourists, around 1,100 kilometres north of the capital Buenos Aires.