I'm configuring Logitech C920 USB Webcam in Raspian for using it with a 3rd party application. I get the below error I tried to set exposure control using uvcdynctrl and guvcview as well. I'm able to use the USB camera with Cheese though.

Init USB video source...
[libwebcam] Warning: The driver behind device video0 does not seem to 
support V4L2
[libwebcam] Unsupported V4L2_CID_EXPOSURE_AUTO control with a non-contiguous     range of choice IDs found 
[libwebcam] Invalid or unsupported V4L2 control encountered: ctrl_id = 0x009A0901, name = 'Exposure, Auto'

How do I set the exposure control ?

  • Have you tried to search for the error?
    – MatsK
    Sep 30, 2017 at 19:27
  • Yes, of course, None of them worked so far. The 3rd party application works fine with Raspberry Pi Camera Module. I reset the erroneous values using guvcview as well. Still it doesn't work.
    – SKR
    Sep 30, 2017 at 19:58


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.