I'm trying to set up a USB webcam alongside the internal PiCam. Trying to understand the plumbing on the webcam interface to octoprint so I can setup the software to use multicam plugin, I'm assuming I need to set up a 2nd stream and point multicam to it. so my question is what/where is a good reference to the underlying software or configuration to enable this.
I've looked at motion, and some other capabilities but they aren't specific to Octoprint - it's more generic "how to set up a webcam" - but it's only one.
any advise or tips?