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Audio - Video Forensic Analyst  Doug Carner
  Criminal and civil audio-video-image clarification and enhancement expert and educator skilled in authentication, metadata, editing, restoration, analysis, filtering, extraction, isolation, photogrammetry, videogrammetry and consulting. His forensic lab has processed evidence in over a thousand cases and millions of dollars in favorable verdicts. Mr. Carner's work is accepted worldwide by courts and news agencies. See examples.

Board Certified
Certified Protection Professional (CPP)
Certified in Homeland Security - level 3 (CHS-III)

Certified Training
Video capture enhancements, image analysis and enhancement, noise reduction, Photogrammetry, Fourier transformation, color deconvolution, Adobe™ Photoshop forensics, surveillance video screen capture, analytical comparisons, video de-interlacing, enhancing latent prints, and admissibility in court.

Manufacturer Training (partial list)
American Dynamics, ArcVision, Bosch, Dedicated Micros, Genetec, Panasonic, Pelco, TYCO, Verint...

Development Contributor
AVIs (Audio Video Innovations and Solutions) – linkedin.com/groups?gid=2461639 (Group owner)
Blurity – Blurity.com (Forensic blind deconvolution image focus-motion corrective software)
Forensic (ver 8 and 9) – DiamondCut.com (Forensic audio enhancement–authentication software)
VideoCleaner – Open source forensic video enhancement and analysis software


Video Error Level Analysis (tamper detection) and RGB color delta amplifier (motion enhancer)


VideoCleaner (automated open-source enhancement-clarification software)


Invented 3 new filters: motion extraction, auto-desequencer, and motion blur removal


Invented filters to clarify pre-recorded video (dynamic focus and camera age correction)


Developed the FP system (dynamic temporal audio/video noise correction and filtering)


Invented several security cameras, "Pay-at-the-gate" and a wireless alarm (patent#6400267)


Authored articles on security and video surveillance, featured trade show speaker

American College of Forensic Examiners Institute (Diplomat status)
American Board for Certification in Homeland Security
Los Angeles Superior Court Panel of Experts
International Association for Identification
American Society for Industrial Security
Audio Engineering Society

Current: President of Forensic Protection, Inc. (5632 Van Nuys Blvd, Dept #600, Van Nuys, CA)
6 Years at several system integrators. CCTV, audio and security design and deployment
10 Years at QuikStor (Van Nuys, CA). Lead engineer and VP Sales & Marketing
5 Years at Deltrex (West Los Angeles). Owner. Custom multimedia, software and electronics
Bachelor of Science, University of California, Davis (Phi Beta Kappa) 1989

Caseload demographics are approximately 60% for defense and 40% for prosecution. My client list includes: Law firms (Wicker Smith, Shouse Law Group, ...), corporations (Disney, RiteAid, Publix, ...), law enforcement (District Attorney, Police, Sheriff, ...), defense (Office of the Federal Defender, Public Defense, innocence project, ...), investigators and individuals.

Recent Testimony and Depositions
02/27/14 P. v David Soto - Los Angeles Superior (VA130222-02 - criminal) ? route reconstruction (D) 
11/14/13 P. v Sevak Demirjian - Los Angeles Superior (LA071817-01 - criminal) - video clarification (D) {402}
10/18/13 A.K.H v City of Tustin - Costa Mesa, CA (SACV 12-01547 JST) - civil - image enhance (P) deposition
10/11/13 Jerry Newmaker v City of Fortuna - Ventura, CA (C-12-4675-PJH) - civil - rebuttal (P) deposition
08/14/13 P. v David Morrow - Brighton, CO Superior (2011 CR001901 - criminal) - video tamper (D)
07/19/13 P. v. Jayson Ponce - Los Angeles Superior (BA396403 - criminal) - video clarification (D)
03/21/13 Dependency Court in the Matter of JT (minor) - Los Angeles Superior (BF039110) - image tamper
01/30/13 Sharkoff v. Fletcher Jones Motorcars - Los Angeles Superior (BC462105 - civil) - video tamper (D)

Recent Cases (partial list)

City Court

Cortland, NY


Audio enhancement

District Court – 287th

Parmer County, TX


Audio enhancement

District Court

Tacoma, WA


Audio enhancement

District Court

Nashville, TN


Audio enhancement

District Court - 61st

Harris County, TX


Video clarification

District Court - Roybal

Los Angeles, CA


Video clarification

District Court

Topeka, KS


Video clarification

District Court

Detroit, MI


Video clarification

District Court

Raleigh, NC


Video clarification

Judicial Circuit – 6th

Pasco County, PA


Video clarification

Judicial Circuit – 15th

Palm Beach, FL


Video clarification

Superior Court

Long Beach, CA


Video clarification

Regional Court

Cape Town, South Africa

Patrick Le Roux

Video clarification

Royal - Nevis Police

Basseterre, Saint Kitts


Video clarification

Superior Court

Placer County, CA


Image authentication

Superior Court

New Delhi, India

892 of 2012

Video authentication

Superior Court

Ventura, CA


Metadata tampering

Superior Court

Los Angeles, CA


Video tampering

Superior Court

Riverside, CA


Video tampering

High-Profile Work
George Zimmerman - Trayvon Martin (Sanford, FL) 02/26/12 (aired 04/02/12)
Matthew Clark (Chicago, IL) 02/07/10 (aired 03/21/11)

Published Writings


eForensics Magazine – “How to extract clear facts from bad video” (Link)


eForensics Magazine – “Detect and prevent file tampering in multimedia files” (Link)


The Litigators Companion - "Don't Let Distorted Media Ruin Your Case" (Link)


The Jury Expert - American Society of Trial Consultants – “Turning an Expert Witness into a Great Witness” (Link)


Homeland Security News Wire – “The technology behind the Zimmerman arrest video” (Link)


ABC News blog – “Video Forensic Expert Who Cleaned up George Zimmerman Video” (Link)


Exhibit One – “Video deblur” (Link)


Security Dealer (Securityinfowatch) – “Improving surveillance with video enhancement” (Link)


California Association of Licensed Investigators – Journal Article – “Forensic Enhancement – Increase safety, expose the truth, reduce costs and prove your case” (Link)



Security Guy Radio (Adrenaline radio) – “CSI Audio, video & images enhancement” (Link)


Nightline and GMA (Rebroadcast worldwide) – “George Zimmerman Video Shows Little Evidence of a Broken Nose” (Link)


KFI am 640 radio interview (George Zimmerman case)


PI's Declassifiedon VoiceAmerica radio – “Audio & Video: Budget Conscious Evidence” (Link)


Expert on the Dr. Phil Television show – “Affairs, Lies and Audiotape” (Link)


CBS News national broadcast (Mathew Clark video) – “New Video Unveiled In Alleged Police Beating Of Grad Students” (Link)


PI's Declassifiedon VoiceAmerica radio – “Audio & Video Enhancement: Myths, Facts & Benefits” (Link)

Lecturer - Forensic 


American College of Forensic Examiners International – Annual Executive Summit
“The Science and Open-Source Innovations of Video Enhancement and Analysis”


International Conference on Forensic Research & Technology – Workshop chair
Keynote speaker – “Audio-Video-Image Forensics: Turning Science Fiction into Science Reality” (Link)


California State Division, International Association for Identification (Link) (repeat on 05/02/13)
“Audio And Video Forensics-Clarification vs Enhancement”


California State Division, International Association for Identification – “Converting bad recordings into clear evidence: The science behind audio, video, image enhancements and authentication” (Link)


California State Division, International Association for Identification (Link)

Lecturer - Legal


National Association of Criminal Defense Lawyers: annual forensic science conference
"Forensics for the Defense: 20 Ways to Win Using Enhancement and Authentication Science"


Consumer Attorneys Association of Los Angeles
"Winning Your Case in the Digital Age with the Use of Enhanced Forensic Evidence"


San Diego Criminal Defense Bar Association – "Criminal Forensics - Visual enhancements and authentication to win cases and exclude opposing exhibits"


Beverly Hills Bar Association – "Criminal Forensics - Removing the Magic and Mystery Behind Audio, Video and Image Enhancements and Authentication" (Link)


National Association of Criminal Defense Lawyers: annual forensic science conference
“Audio-Video Enhancement, Detecting Altered Files, and Excluding Media Experts and Exhibits” (Link) REVIEW


South Bay Bar Association – “Audio - Video Enhancement and Authentication” (Link)


South East District Bar Association – “Converting Bad Recordings into Clear Evidence…”


Beverly Hills Bar Association – “Converting Bad Recordings into Clear Evidence…” (Link)


Burbank Bar Association – “Converting bad recordings into clear evidence…” (Link)


Ventura County Bar Association – “Converting Bad Recordings into Clear Evidence: The Science behind audio, video and Image enhancements and authentication” (Link)


San Fernando Valley Bar Association – “Determining if your audio-video surveillance files have been altered. How audio-video files are enhanced and authenticate…” (Link)


California Public Defenders Association – “Winning your case with audio and video enhancement” (Link)


National Defender Investigator Association – “Video and Audio Forensics: Winning your case…” (Link)


Legal Professionals Association – “Winning your case with audio and video enhancement” (Link)


Legal Secretaries Incorporated – “Increase safety, expose the truth, reduce costs and win litigation” (Link)

Lecturer - Investigative


LAPD (Valley Bureau) All Commanding Officers meeting (Link)


Private Investigators of California – “Investigative Forensics: Turning science fiction into reality” (Link 1,2)


LAPD (Valley Bureau) All Commanding Officers meeting (Link)


Private Investigators of California (Link)


California Association of Licensed Investigators – Central Coast District Meeting (Link)


American Society for Industrial Security – “What to know before your buy or upgrade your electronic physical security.” (Link)


Private Investigators of California (Link)


American Society for Industrial Security – Video and audio enhancement that converts existing security equipment into high resolution" (Link)


Private Investigators of California (Link)

Law Enforcement

Public Defender

Private Attorney

National News

Educational Curriculum
My training courses are free (the venue or host may charge a fee). The agenda typically includes:
 Determining if discovery files are originals, duplicates or altered copies
 Authenticating exhibits, and challenging opposing evidence and experts
 Retrieving facial, object, tattoo and vehicle license plate identification from video
 Calculating vehicle speeds and the heights of individuals from a single picture or video
 Extracting whispers, voice identification, noise reduction, and on-screen transcriptions
 Common mistakes made by industry experts and why they rarely get challenged
 Industry history, emerging technologies, and effective open-source and commercial software
Contact me to schedule an educational lecture at your forensic forum, law conference or school. Review

Training Resources
Basic Television and Video Systems - McGraw-Hill Science (6th edition) ISBN:978-0028004372
Best Practices for the Retrieval of Video Evidence from Digital CCTV Systems - http://tswg.gov
CCTV Networking & Digital Technology - Buttersworth-Heinemann (2nd edition) ISBN:978-0750678001
How Video Works - Focal Press (2nd edition) ISBN:978-0240809335
Photoshop CS3 for Forensic Professionals - Sybex ISBN:978-0470114544

My History
In the late 1980's, my friends would forward internet images and videos of questionable origin. Most were hoaxes, but how could I know for sure? I investigated methods of authentication and enhancement. When the AVIsynth scripting language was released in 2000, it empowered me to invent and automate nearly any VirtualDub video enhancement and authentication filter I needed. I was passionately reading every relevant training or science document and publication that I could find, collaborating with peers, and testing new concepts. Since I was providing my enhancement and authentication services Pro Bono, my income came from engineering large-scale audio-video surveillance systems; which provided me with frequent factory training on industry systems, and a deep understanding of why recordings were less than perfect.

Enhancement companies around the world took notice and I became their secret labor sub-contractor. These international relationships work because my lab provides free evaluations and locally sub-contracts speculative services (voice-face matching, transcription, object interpretation, etc). The latter dramatically reduces testimony expenses for our clients, and both remain our current policy. I love this industry and continue to invent (VELA, RgbAmplifier and VideoCleaner), collaborate for the greater good, and contribute to the development of specialized industry software.

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