Sveinn Olafur Gunnarsson is an award winning Icelandic stage and film actor who starred in and co-wrote 2011's "Either Way", Ragnar Bragason's "Metalhead" and Baltasar Kormakur's "The Deep". Gunnarsson stars in the film Rams which premiered in the Un Certain Regard section at the 2015 Cannes Film Festival. He also stars in the upcoming American film "Autumn Lights".

Based on the paragraph above can we conclude that "Sveinn Olafur Gunnarsson did not star in "metalhead""?
No