Mr. Nick Barreiro, BAC, AVFA, DIVRT

Principle Forensics
6688 Nolensville Rd, Suite 108-129
Brentwood, TN 37027
Mobile: 615-854-8055
Office: 615-854-8055

Principle Forensics is a national media forensics laboratory.  We work with attorneys representing plaintiffs and defendants in civil and criminal matters in which audio, video, or image evidence plays a key role.  We recover, authenticate, enhance, and analyze all types of recorded evidence, and we back our work with experienced, highly trained, expert testimony.  Our Chief Forensic Analyst, Nick Barreiro, BAC, AVFA, DIVRT, is a certified Audio Video Forensic Analyst, a former Police Detective, and an FBI-trained member of the Digital Imaging and Video Recovery Team.  He is an expert with tremendous technical knowledge and training, but also extensive experience on the witness stand.  He has conducted hundreds of forensic audio, video, and image investigations in the United States and internationally.  He has enhanced and analyzed thousands of digital files, ranging from simple slip-and-fall cases and minor traffic accidents to complex investigations such as homicides and officer-involved shootings.  Nick is a court-certified expert and has provided testimony in criminal cases, civil litigation, and arbitrations.

Areas of Expertise
  • Accident Investigation
  • Audio
  • Crime Scene Analysis
  • Evidence Analysis & Preservation
  • Photogrammetry
  • Surveillance
  • Video

Expert Background
Q: Please list your professional accreditations, degrees, licenses, and certificates granted:
A: Certified Audio Video Forensic Analyst – AVFA
Electronic Technicians Association

Digital Imaging and Video Recovery Team – DIVRT
Federal Bureau of Investigation

Certified Robbery/Homicide Investigator
Robert Presley Institute of Criminal Investigation

Advanced Peace Officer Certification
California Commission on Peace Officer Standards and Training

Bachelor's Degree in Communications
University of California, Davis
Q: Please list your affiliations or memberships in any professional and/or industry organizations:
A: - Electronic Technicians Association
- International Association for Identification
- Audio Engineering Society
- Digital Imaging and Video Recovery Team
Q: Please list any teaching or speaking experience you have had, including subject matter:
A: The Power of Audio, Video, and Image Evidence - CLE Instruction to the Tennessee Defense Lawyers Association, June 2023
Understanding Video and Audio Forensics - Presentation to the Georgia Association of Professional Private Investigators, November 2022
Q: Have any of your accreditations ever been investigated, suspended or removed? (if yes, explain)
A: No
Q: On how many occasions have you been retained as an expert?
A: 300+
Q: For what area(s) of expertise have you been retained as an expert?
A: Video, Audio, and Image Forensics
Q: In what percentage of your cases were you retained by the plaintiff?
A: 50%
Q: In what percentage of your cases were you retained by the defendant?
A: 50%
Q: What services do you offer? (E.g.: consulting, testing, reports, site inspections etc.)
A: Video, Audio, and Image Forensics
• Expert testimony
• Authentication of Recorded Evidence
• Enhancement of Video, Audio, and Images
• Synchronization of Multiple Audio/Video Recordings
• Analysis of Recorded Evidence
• Redaction of Video Footage
• DVR Video Evidence Recovery
• Recording Device Analysis
• Photogrammetry
• Facial Recognition
• License Plate Recognition
• Public/Media Release
• Court Exhibit Preparation
• Consulting


Available on request.

Principle Forensics Demo Principle Forensics is a cutting-edge media forensics laboratory. We work with attorneys, law enforcement agencies, individuals, and corporations, to deliver comprehensive enhancement and analysis of video, audio, and images.
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