Due to the inherent complexities in cameras that function on computers, there are some caveats to how LightBurn interacts with cameras. Only “UVC” cameras are supported, meaning most phone cameras, IP cameras, and “software” or virtual cameras, do not function either partially or wholly.
This isn’t an intentional or overt design choice, but a limitation of the current approach to how LightBurn handles cameras for maximal reliability across all of our users.
You may have some luck looking for a plugin that provides this functionality within OBS, but I do not have any recommendations at this time. If you use the search tool on the forum you can find some other threads that may be helpful, like this one: Wifi camera shows up on OBS app but when I select it in Lightburn, its just a blank rectangle - #14 by Hye_Maker