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27 April 2021

How to use adjust webcam parameters?

A very straightforward software written in C++ is v4l2ucp (Video for Linux Two ucp). It uses Qt libraries on Linux to read a description of the controls that the V4L2 device supports from the device, and presents the user with a graphical means for adjusting those controls.

In a one-page interface you will be able to control as much as (controls will depend on your device):

• brightness
• contrast
• saturation
• hue
• white balance temperature
• gamma
• power line frequency
• sharpness
• backlight compensation
• exposure auto mode

This can be extremely useful in dark room for example.

Here are some screenshots: