Without going onto a full blown discussion on Miranda, essentially it only prohibits testimonial evidence/confessions/statements made in violation of Miranda. Here, there is Physical Evidence from the recording made by Cutscene. Under Patane, physical evidence seized even with a faulty Miranda warning is still admissible at trial. Additionally, even statements made in violation of Miranda can be used for impeachment processes if the defense brings the issue up for trial purposes, as well as at Grand Jury Reviews.