Changing USB Powered Security Cameras to AC 120

[Chris Johnston]

Cross‑posted here: https://forum.allaboutcircuits.com/threads/changing-usb-powered-security-cameras-to-ac-120.210821/

I have video cameras that run on USB power, but the factory USB cable is much longer than I need. The Lorex cameras I’m using have built‑in floodlights, and I want to install them in the same locations where my existing floodlights are mounted. That means removing the old floodlights and powering the Lorex cameras from the same AC wiring that currently feeds those fixtures. Is there a part or adapter I can buy — or safely build — that lets me shorten the USB power cable and connect the camera to the same AC power coming from the floodlight’s junction box?

I only show this as an example of what I might need. However it does not seem to be the most acquirable part. Could anybody link to an acquirable part?

Thanks for any help