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Posts Tagged ‘Demonstrative Evidence’

18: Creating Video Work Product as an Audio Video Forensic Expert

Friday, February 27th, 2015

18: Creating Video Work Product as an Audio Video Forensic ExpertVideo work product is a way to document forensic investigations, like evidence recovery, for reference at a later date. Processes and procedures are documented using a video camera by a forensic expert during a forensic investigation for future use. I have referred back to my video work product many times during the course of a case when I have questions later in the evolution of the case. There are a few different digital video recording platforms that I use when creating ‘video work product’. Each one of these types of systems serves a certain purpose in assisting with a forensic investigation as well as the investigative process.

I personally use the VIEVU LE2 and LE3 body worn cameras. My main use for this body camera in my investigations is recording my forensic process in the field. This includes retrieving evidence from different systems so I can review the video later and include in my report to support the authenticity of my work product and any evidence used in the case.

Another type of digital video camera that I use to produce video recordings is a HDSLR photography camera. In some investigations, a single video recorded perspective may not be sufficient to display the forensic process or document the events. Having another high quality camera with flexibility of perspectives and interchangeable lenses can capture aspects of my investigation that body worn cameras cannot.

Video evidence produced by CCTV systems can help solve crime, as well as reproduce accidents and disasters as they occurred for play back in many different settings. A significant use a video forensic expert has when recording video from a CCTV system is to create an exemplar. This recording is used as a comparison file to the original evidence to help determine the authenticity of the original evidence.

It is a best practice of ours at Primeau Forensics to video record many forensic investigations like the exemplar creation process and evidence recovery so if anyone has any questions during the life of the case, this video work product can be referenced.

Now listen in with Audio and Video Forensic Expert Ed Primeau as he discusses creating Video Work Product for Forensic Investigations.

3: Forensic Science – Writing Your Forensic Report

Friday, September 5th, 2014

3: Forensic Science - Writing Your Forensic ReportThe forensic report is a forensic experts full report of their work on a case for court.  It includes everything the forensic expert did while examining the evidence along with their findings throughout the investigation.  In this post, we will briefly talk with Chicago trial attorney Shawn Warner about the importance of the forensic report and what makes a great forensic report. The examples I will use today are about combining forensic sciences and forensic clues to help develop and process a case for trial.

Analyzing all information and determining what process to use are typical for most forensic investigations.  Building the forensic report is key in preparing for trial.  The forensic report contains all of the work that was put into your investigation and covers all of the facts for the case.  This ensures that nothing is left out of an expert witness’s deposition or testimony.

I use audio and video forensics in combination quite often. The publicized shooting of a firefighter on his wedding night by an off duty Kansas City Police Officer is an example where I combined forensic sciences in order to bring out the facts of the shooting. I was given a cell phone video recorded by a witness.  The video included much of the confrontation but not the entire confrontation.  I could hear the dialogue between the two men in the cell phone audio. One of the first things I did after I loaded this cell phone video into Adobe Premiere Pro CS 6 was develop and process the audio portion of the video to better hear the words spoken. Next I loaded a second video I was given which was from a nearby CCTV camera across the street in a parking garage.  Then I synced the two videos together so the viewer could see and hear all the events as they occurred in both recordings.

In this weeks podcast, listen in with Audio & Video Forensic Expert Ed Primeau as he talks about the importance of a forensic report and its importance in a case.

 

 

 

 

 

 

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