IAI CFVE case studies
IAI CFVE · Put your knowledge to work in context.
The Certified Forensic Video Examiner (CFVE) is a certification listed by the International Association for Identification (IAI) among its certification programs, appearing in the association's certification menu alongside Bloodstain Pattern, Crime Scene, Footwear, Forensic Art, Forensic Photography & Imaging, Latent Print, and Tenprint Fingerprint. The IAI describes itself as the oldest and largest forensic association in the world, representing a diverse, knowledgeable and experienced membership assembled to educate, share, critique and publish methods, techniques and research in the physical forensic science disciplines. The IAI CFVE case studies are 5 cases and about 2,741 words.
1The DVR That Only Plays on the Vendor's Player
During a convenience-store robbery investigation, the loss-prevention manager provides a 42-second MP4 that he created by playing the store's Nexus-8 DVR footage on his laptop and recording the screen with a phone. The DVR stores eight 704×480 cameras at 30 fps with 21 days of retention; the incident occurred nine days ago.
606 words, about 3 min2Twenty-Nine Point Nine Seven Is Not Thirty
A bank ATM vestibule camera records 720×480 interlaced video at 29.97 frames per second (59.94 fields). The relevant event is a card skimmer being installed, lasting about 6 seconds.
554 words, about 3 min3How Tall Was the Suspect at the Doorway?
A gas-station doorway camera is mounted 3.1 m above the floor with a 15° downward tilt and a 2.8 mm wide-angle lens, recording 640×480 at 15 fps. The door frame is known to be 80.0 inches high at the threshold.
540 words, about 3 min4The Forty-Pixel Face
An underground parking garage camera records 320×240 at 10 fps with strong noise in low light. A suspect stands 8 m from the camera; the distance between the eyes is about 40 pixels in the best frame, and the face is turned 20° from frontal.
522 words, about 3 min5The Video That Came Through a Platform
A 47-second video of a fight outside a bar was uploaded to a social-media platform three days after the event. You download it: 1080×1920, 30 fps, H.264, AAC audio, metadata stripped, GOP length 30, and variable quantization.
519 words, about 3 min