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guysoft / OctoPi

Scripts to build OctoPi, a Raspberry PI distro for controlling 3D printers over the web
GNU General Public License v3.0
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[Request] webcamd should allow video devices other than `/dev/videoN` #776

Open bendavis78 opened 2 years ago

bendavis78 commented 2 years ago

Video devices under /dev/videoN are not always guaranteed to be enumerated in a predictable manner. UDEV no longer allows overriding NAME, so the only solution is to create your own symlink (for example SYMLINK+=logitech-c310 would create /dev/logitech-c310). Unfortunately, webcamd is hard-coded to expect devices under /dev/videoN, and will break if it encounters otherwise.

cp2004 commented 2 years ago

I don't think this is completely true - I've been able to successfully use /dev/v4l/by-id to address the camera device.

Having said that... Is it this regex that breaks when trying to use something else that's not either /dev/video* or /dev/v4l https://github.com/guysoft/OctoPi/blob/4a92bdf8dcb52611258ded74dd797888bb545ee0/src/modules/octopi/filesystem/home/root/bin/webcamd#L59

guysoft commented 2 years ago

I don't know how I can account automatically for stuff you changed in the udev rules manually. But it seems @cp2004 is right - you could just type that variable out by hand, since you are already patching in custom udev code, and it should work.