I'm currently working on a project that requires taking pictures with 3 USB webcams but whenever I boot the raspberry, it assigns randomly a /dev/video "address" to each one of them. I'm not using the camera module for the raspberry so they usually get the /dev/video0, /dev/video2 and /dev/video4. I've read that for USB devices you have to modify the rules of the raspberry but I don't know how to do it with webcams.

  • The "rules" referred to are for udev; more specifically you want to add a SYMLINK based on the camera's USB ID or some other unique characteristic. This is a bit technical but there are lots of examples if you search around. – goldilocks Oct 24 '19 at 21:23

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