In the most recent release from the Norman Police Department, it has been confirmed that video evidence is a piece of the evidence and a reason why the video has yet to be released. It also confirms injuries to the alleged victim and that Mixon was not present at the scene when authorities arrived.
Below is the complete press release.
As of July 28, 2014 at 1045 AM the Norman Police Department Criminal Investigations Division continues to investigate the Assault reported on July 25, 2014 at 0239 AM at Pickleman's Gourmet Café, 759 Asp Avenue. The Norman Police Department can confirm as previously released by Attorney Kevin Finlay that Joe Mixon, age 18 of Norman, is an involved party of the investigation. The facts of the incident as reported to police describe an altercation between Amelia Rae Molitor, age 20 of Norman, and Joe Mixon that turned physical and concluded with Molitor sustaining injuries to her face. Joe Mixon was not present when Police arrived to the initial call for service. Police are in communication with all parties involved in this incident. While there is a video recording of the incident, the evidentiary value of the recording prohibits its release at this time. When Police Detectives conclude their investigation all pertinent documentation will be submitted to the District Attorney's Office for review.