Audio & Video Forensic Analysis
A Practical Baseline Guide for Defense Investigators and Attorneys
Audio and video evidence may come from surveillance systems, body-worn cameras, police interviews, 911 calls, smartphones, social media, vehicles, doorbells, cloud services, and privately recorded conversations. It can help establish what occurred, who was present, what was said, and when an event happened—but only when its source, integrity, timing, context, and technical limits are understood.
This page helps defense investigators and attorneys establish a reliable baseline before relying on a recording, enhancement, transcript, image, clip, or demonstrative. It does not teach an untrained person to retrieve, authenticate, enhance, or compare multimedia evidence.
Preserve first: Many surveillance systems overwrite older recordings as storage fills. Cloud clips, social-media content, dispatch audio, and privately held recordings may also be deleted under changing retention policies. Identify and preserve possible sources immediately.