In order to set new camera parameter value use command syntax like this: > v4l2-ctl -set-ctrl=gain=00 > v4l2-ctl -get-ctrl=white_balance_temperature Read current UVC value with command below. Led1_frequency (int) : min=0 max=255 step=1 default=0 value=0 Led1_mode (menu) : min=0 max=3 default=0 value=3 Sharpness (int) : min=0 max=255 step=1 default=128 value=128īacklight_compensation (int) : min=0 max=1 step=1 default=1 value=1Įxposure_auto (menu) : min=0 max=3 default=3 value=3Įxposure_absolute (int) : min=3 max=2047 step=1 default=250 value=625 flags=inactiveįocus_absolute (int) : min=0 max=255 step=5 default=0 value=20 flags=inactive White_balance_temperature (int) : min=2000 max=7500 step=10 default=4000 value=2770 flags=inactive Gain (int) : min=0 max=255 step=1 default=0 value=0 Saturation (int) : min=0 max=255 step=1 default=128 value=128 Logitech Brio 4K brightness (int) : min=0 max=255 step=1 default=128 value=128Ĭontrast (int) : min=0 max=255 step=1 default=128 value=128 Sharpness (int) : min=0 max=255 step=1 default=57343 value=128īacklight_compensation (int) : min=0 max=1 step=1 default=57343 value=0Įxposure_auto (menu) : min=0 max=3 default=0 value=3Įxposure_absolute (int) : min=3 max=2047 step=1 default=250 value=250 flags=inactiveĮxposure_auto_priority (bool) : default=0 value=1 White_balance_temperature (int) : min=2000 max=6500 step=1 default=57343 value=4000 flags=inactive Power_line_frequency (menu) : min=0 max=2 default=2 value=2 White_balance_temperature_auto (bool) : default=1 value=1 Power_line_frequency 0x00980918 (menu) : min=0 max=2 default=1 value=1 White_balance_temperature_auto 0x0098090c (bool) : default=1 value=1 List is self explanatory with possible value ranges. Video for Linux V4L2 can report all available controls to single list. You can open both of them at the same time with different programs (for example h.264 for live streaming, MJPG for onboard recording or computer vision processing) List available controls One video device is for regular YUYV/MJPEG compressed output another is for h.264. Note two interfaces for Kurokesu C1 camera – this is dual stream output. Now let’s see what we have connected on USB port > v4l2-ctl -list-devices KurokesuC1_SN000803 (usb-0000:00:14.0-1):
#Logitech camera settings c920 install
Probably V4L2-CTL is the most advanced and recommended command line tool for advanced users.įresh Linux might be missing utility, install it with simple command: sudo apt update There are few tools to work with USB cameras in Linux. Kurokesu C1 family ( C1, C1 PRO, C1 MICRO), Logitech C920 and Brio are the ones that can be trusted.
#Logitech camera settings c920 manual
There are many UVC compatible webcams most of them support full auto mode but only a few of these cameras provide extended manual white balance, gain and exposure control.
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