I ran into a similar issue with MJPG-Streamer a while back, and you’re absolutely right to dig into the debug logs — that’s usually where the real clue hides. A lot of times it comes down to permissions or the device node not being where the program expects, especially when you switch cameras or USB ports. It’s funny how tools like this can feel simple on paper but behave unpredictably in real setups — reminds me of when folks troubleshoot older games like Hitman Absolution and how different systems...