It shows a college professor having sex with a naked female – reportedly a student – inside a classroom in broad daylight.
In the clip the girl is seen lying on her back on what appears to be a desk at the front of the room.
The footage runs until the professor has finished teaching his, er, lesson.
Commenting on the video online, Herr Berrt said: "Although this teacher must be pretty stupid, when he is banging a student in her classroom I don´t get why people are sneakily filming to put it in the internet later on."
Another viewer calling himself Tarquin Fimtim said: "Where do they expect a teacher to have sex with a student? In a busy corridor or the staff room?"
Originally uploaded on Chinese social media platform Weibo, a caption on the x-rated clip claimed the tryst had taken place at Changzhou University in China.
According to reports the professor involved is now under investigation for violating the university’s code of conduct.