[ERROR] [1533077476.693028660]: cv camera open failed: device_id0 cannot be opened

[sabetAI]

I'm running a ros pointgrey camera drive as my input node, which publishes to /camera/left/image_raw, and I'm calling
rosrun cv_camera cv_camera_node /cv_camera/image_raw:=/camera/left/image_raw
but I get the following error:
[ERROR] [1533077476.693028660]: cv camera open failed: device_id0 cannot be opened
It seems cv_camera is trying to access the camera directly instead of publishing to its topic? How do I resolve this?

[lflanag4]

Hello, I am having the same issue. Did you solve the problem?

[OTL]

Is there video device?

Can you paste the results of

ls -l /dev/video*

[lflanag4]

Yes I am using a Logitech Webcam C920. The output of ls -l /dev/video* is:
crw-rw----+ 1 root video 81, 2 Jun 20 16:38 /dev/video0
crw-rw----+ 1 root video 81, 3 Jun 20 16:38 /dev/video1

[OTL]

Have you checked the permission? For example, you can change by below command. sudo chmod 666 /dev/video*

[lflanag4]

This did not return anything. I think the issue is that I need to use video1 but I am not sure how to do this

[OTL]

returns nothing means 'there are no cameras'. It seems there are no video0 nor video1. 2019年7月17日(水) 0:33 lflanag4 <notifications@github.com>:

…

This did not return anything. I think the issue is that I need to use video1 but I am not sure how to do this — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#18?email_source=notifications&email_token=AABSSJTXXUDQLTS4B5O4NKDP7XS4HA5CNFSM4FNGE6E2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD2BH3EQ#issuecomment-511868306>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AABSSJQ7OTOSY52MUZ4Q7YLP7XS4HANCNFSM4FNGE6EQ> .

-- /************************* Takashi Ogura (小倉 崇) t.ogura@gmail.com https://foundx.jp *************************/

[mywnajsldkf]

Hi I had a same error, too.
sorry for late comment
I don't know about the exact solution.
However, I shut down the computer and restart it, everyting is fine
Also I had an similar error
perhaps, your device is busy(?)
I close the terminal that my web cam is working and open the another
It makdes me okay! haha

If you have a exact cause please leave me a commnet.

Happy development :)