: Higher-end surveillance systems often use these alphanumeric strings to timestamp and index footage for quick retrieval in databases.
: Many security cameras, dashcams, and video editing software generate sequential filenames (e.g., G0001.mp4, G0002.mp4). G9567 would simply be the 9,567th video in that sequence. g9567.mp4
Knowing if it was on a social media site, a specific forum, or a private server would help in identifying if it belongs to a specific digital mystery or niche community. Library of Congress Classification - Schedule G a specific forum