Original video:
An extremely rare recording of the Nihon SF Taikai audience reaction to the 1983 OAV Daicon IV - one thing noticeable about this version is how some on the animation is different, likely unfinished due to initial time contraints for the festival.

The Twitter thread where I obtained the video: twitter.com/masahitoSPV/status/1464251423336501254

This video has been uploaded for entertainment purposes only: no copyright infringement is intended.