Knut Hoffmeister is a German experimental filmmaker and web developer. After his exam at the Walther Rathenau-skolan in Berlin-Grunewald he applied to the dffb, The German Film & Television Academy in Berlin. His application was rejected. Instead he worked as a taxi driver and assisted the multi-artist Martin Kippenberger.

Hoffmeister publish his videos and films on the YouTube channel Notref/rflxe.