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Running usb_cam across VNC and getting Cannot identify '/dev/video0'

asked 2019-06-03 13:16:55 -0600

Kolohe113
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updated 2019-06-03 13:18:28 -0600

Hello guys, I was running a docker container that contains the normal ros packages and usb_cam. I visualized the ubuntu interface through a VNC (localhost:5900) and tried roslaunch usb_cam usb_cam-test.launch in the VNC viewer. However, I got:

[ERROR] [1559585420.922861365]: Cannot identify '/dev/video0': 2, No such file or directory

When I tried ls -ltrh /dev/video*, I got ls: cannot access '/dev/video*': No such file or directory. Everything works when I tried the aboves on my local computer, are there any additional steps I need to make so I can use my webcam in a docker image?

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answered 2019-06-03 14:20:20 -0600

gvdhoorn
86574 ●283 ●1432 ●1054 http://cor.tudelft.nl/

Everything works when I tried the aboves on my local computer, are there any additional steps I need to make so I can use my webcam in a docker image?

yes: mount the device file into your Docker container (using -v or --volume), similar to how you would do that with other files and directories.

This is not really a ROS issue btw: I would suggest you try to search for how to make Linux device files available to/in Docker containers.

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Solved by following instruction described here: https://medium.com/@zwinny/docker-usi...

Kolohe113 ( 2019-06-03 14:20:45 -0600 )edit

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Asked: 2019-06-03 13:16:55 -0600

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Last updated: Jun 03 '19

Running usb_cam across VNC and getting Cannot identify '/dev/video0' edit

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Running usb_cam across VNC and getting Cannot identify '/dev/video0'