Complex sentence: Super 8mm film cameras were first manufactured in 1965 by Kodak for their newly-introduced amateur film format, which replaced the Standard 8 mm film format; and manufacture continued until the popularity of video cameras in the early 1980's.
Split into simpler sentences: Super 8mm film cameras were first manufactured in 1965 by Kodak for their newly-introduced amateur film format, which replaced the Standard 8 mm film format. Manufacture continued until the popularity of video cameras in the early 1980's.