Can't turn LED Off HD Pro Webcam C920

[mostym]

Hi there. I love your software, though I did I have one question. How can i turn off the LED on my HD Pro Webcam C920?

Thanks!

[ccrisan]

No idea. That's something specific to the camera itself, not the V4L2 interface, as far as I know.

[mostym]

Hey @ccrisan when I install just motioneye on raspbian, and then do the following, I can turn off the LED. Can I please request this as an enhancement? I would much rather use your motioneyeOS. Thanks!

sudo apt-get install uvcdynctrl
sudo uvcdynctrl -i /usr/share/uvcdynctrl/data/046d/logitech.xml

# LED off
uvcdynctrl -s 'LED1 Mode' 0

[ccrisan]

We have uvcdynctrl on motionEyeOS so you can use that.

[allthegoodnamesweret4ken]

@mostym

sudo apt-get install uvcdynctrl
sudo uvcdynctrl -i /usr/share/uvcdynctrl/data/046d/logitech.xml

# LED off
uvcdynctrl -s 'LED1 Mode' 0

Did you manage to switch off the LED? If so, care to share how? I have the exact same camera, and am facing the same problem.

[alpa2009]

knowing this is an old post, but having the same problem: it seems that control option 'LED1 Mode' does not exist, at least it is not listed when listing the available user controls... was this ever solved? Tnx

[sfduff]

Using uvcdynctrl to turn off Logitech c920 LEDs does work, even with the errors, so long as you don't have the local pi camera interface enabled using Raspi-config.
As soon as the pi camera interface is enabled, it stops working; disable it and once again!
I have a couple of RPi's using 'both' a pi camera (for night vision) and a Logitech c920 for daytime connected.
I used to be able to operate both from the same pi3b+ using Stretch, but have not been able to do the same with Buster.
I'm guessing it is something to do with address space for the devices, but it is a bit beyond me tbh, and help welcome.

[floriansiepe]

For those who are facing the same issue. I was able to disable the led by using v4l2-ctl.

# Get the right device
v4l2-ctl --list-devices
# Get the current setting (my device was /dev/video4)
v4l2-ctl --get-ctrl=led1_mode -d /dev/video4
# Disable the LED
v4l2-ctl --set-ctrl=led1_mode=0 -d /dev/video4

[Paderman]

For those who are facing the same issue. I was able to disable the led by using v4l2-ctl.

Thank you for your help 🙂

Where can I find all commands for this camera?
I must e.g. flip the camera but I don't know how does it work.

Is it possible to get and set frame rate and many more?
Currently it gives only 5 FPS in motion. Used system is Orange Pi Zero2 with the latest Orangepizero2_3.0.6_ubuntu_jammy_server_linux5.16...

Thank you in advance.