The film was compiled in 1978, in the wake of Star Wars: Episode IV - A New Hope (1977)' success. This explains the scrolling foreword 'homage' at the start of this film.
In the opening they identify the date as 2100 but in the audio they say it's well into the 21st century. If it's 2100 then it should be the 22nd century as the 21st century date would be 2000 not 2100. They're about a century off.