The Chicago Police Department released dash cam video of the Laquan McDonald shooting. Although most dash camera video recordings include an audio track, this did not. Concerned citizens believed that the audio portion of the video recording was intentionally deleted or altered. We previously explored why there could be an …Read More
Why is video authentication important? As a video forensic expert, I often find that videos submitted into litigation are not original as the person admitting has stated. Instead, they are copies that have been altered to only contain the events they want the trier of fact to see. From a …Read More
How can I tell if my video recording has been edited? In order to authenticate video evidence accurately, a trained video forensic expert must perform the testing to ensure the authentication process is done accurately. The expert performs a series of tests on the metadata as well as the visual …Read More
Traditionally, a chain of custody is established between all parties when handling video forensic evidence. Most of the time, the chain of custody process is easily established and agreed upon when bringing in a forensic expert to authenticate or clarify and enhance the video evidence. This is a blog post …Read More
I got a call recently from an attorney who had a VHS tape recording of a traffic stop. The attorney asked if I could determine if the tape had been altered. He went on to describe what his client thought was a glitch. I understand the attorney’s dilemma. On one …Read More
Digital audio and video are recorded and stored in electronic equipment. If the audio or video is needed in court, the original device that created the recording must be identified and kept in a chain of custody. The only exception is when both parties involved in the litigation agree that …Read More
Audio evidence, as well as video evidence, is any recording that has been admitted and accepted into litigation and is an account of events as they occurred.
Audio evidence includes confidential informant recordings, recordings of confession by officials, telephone intercept or wiretap, voice mail, and 911 calls. The goal of the …Read More