BY RYAN ABER, Staff WriterWith the 911 tape in the investigation involving Oklahoma freshman running back Joe Mixon released Tuesday, one other key piece of evidence remains unreleased — the surveillance video. The video from inside Pickleman’s Gourmet Cafe, where the alleged assault took place early Friday morning, might not become public for a long while, if at all. The presence of surveillance footage was mentioned multiple times in the 911 call made around 2:30 a.m.Read more on NewsOK.com