Webcam not working

[humbertogu]

Hello,

Firstly, great implementation! Could get Klipper working great on my printer using my home computer in a breeze.

Couldn´t get webcam to stream in any frontend though, so tried to run ustreamer manually with:

docker run -p 8080:8080 --device /dev/video0:/dev/video0 mkuf/ustreamer:latest

That returned

-- INFO  [11765.384      main] -- Starting PiKVM uStreamer 5.42 ...
-- INFO  [11765.384      main] -- Using internal blank placeholder
-- INFO  [11765.384      main] -- Listening HTTP on [0.0.0.0]:8080
-- INFO  [11765.384    stream] -- Using V4L2 device: /dev/video0
-- INFO  [11765.384    stream] -- Using desired FPS: 0
================================================================================
-- INFO  [11765.384      http] -- Starting HTTP eventloop ...
-- ERROR [11765.384    stream] -- Can't access device: Permission denied
-- INFO  [11765.384    stream] -- Waiting for the device access ...

The webcam is working fine everywhere else, even on other containers, what could be causing this?

[mkuf]

This might be due to a gid mismatch between your host and the container.

Check the group ownership of the video device with

ls -ln /dev/video0

The gid should be 44 to match the container.
If that is not the case, you may have to add a udev rule to set the device ownership.

There are already docs on how to achieve this for the serial device, which you can adapt for your case: https://github.com/mkuf/prind#serial-device-permissions

If that is not working, please run the get-info script and share the generated archive here.

-Markus

[humbertogu]

Thanks for the swift reply,

Got it working perfectly with the instructions provided for the serial device with a few tweaks.

ACTION=="add",SUBSYSTEM=="video4linux",ATTRS{idVendor}=="0000",ATTRS{idProduct}=="0000",GROUP="44"