Audio and Video Authentication and Analysis

One of the questions we are asked more often than any other is ‘can you tell me if this audio or video recording has been edited’? It is always best to preserve the original recording to remove all doubt about the genuineness of the recording. In other words, the original evidence is only original if it has not been copied, or cloned for analysis.

With today’s advanced audio and video editing software being readily available, it is becoming easier and easier to edit or tamper with forensic evidence. Establishing the authenticity of audio or video is extremely important when presenting admissible evidence to the court. Primeau Forensic’s examiners continue their education yearly in both audio and video forensics.

AUDIO AUTHENTICATION PROCESS:

1. Evidence marking for later identification by the forensic expert
2. Physical inspection of the evidence for specific characteristics that are noted by the expert
3. Digital data imaging and playback optimization
4. Critical listening to the audio for auditory anomalies
5. High resolution waveform analysis, visual inspection of sound wave formation
6. Narrow band spectrum analysis
7. Spectrographic analysis
8. Digital data analysis
9. Miscellaneous analysis based on the investigation thus far
10. Work notes and work product
11. Creating a forensic report

Video authentication has similarities to audio authentication in that it is always best to preserve the original recording to remove all doubt about genuineness. When the original recording is not available, the video forensic expert has to investigate several aspects of the video recording, including the metadata and hex information, to determine if a video recording has been edited. Much of the video authentication process is scientific. The video forensic expert not only investigates the elements of the video recording itself, but also investigates the way the video recording surfaced, how it was created and the type of equipment that was used to create the video recording in question.

VIDEO AUTHENTICATION PROCESS:

1. Establish that of the quality of the recording in question is acceptable and workable
2. Evidence marking for later identification by the forensic expert
3. Physical inspection of the evidence for specific characteristics that are noted by the expert
3. Digital data imaging and playback optimization
4. Examine the electronically recorded information on the digital or analogue video signal.
5. Vector and Waveform scope analysis to detect anomalies
6. Miscellaneous analysis based on the investigation thus far
7. Work notes and work product
8. Creating a forensic report

 

If you have a video that you question or need help understanding, please give us a call for a pro bono conversation. We apply all forensic expertise to cases in the United States and many countries around the globe. Any and all formats of audio and video accepted. Retainer agreement available on request; travel expenses will be quoted in advance excluding meal expenses and flat rate time for travel instead of hourly.

Click HERE to email your questions or

Call 800-647-4281 in the USA or +01-248-853-4091 Internationally.

Ed Primeau’s Curriculum Vitae has several references which include cases he has testified in as well as clients he has worked for in these cases.

Read More on Audio Authentication  HERE

Read More on Video Authentication  HERE

Associations


View Expert Witness Profile on Experts.com.


View Consulting Profile on Experts.com

Download Edward Primeau’s C/V

cv

Video

 Check out our other Forensic Services Websites:

logo-othersites-afelogo-othersites-vfe