Logitech Streamcam - adjusting settings on Ubuntu linux


Tags: linux webcams

By default, for me the image produced by the Logitech Streamcam webcam under linux is very underexposed.

Fortunately, it is possible to set the exposure manually.

Install qv4l2

sudo apt-get install qv4l2

The qv4l2 tool can then be used to play around with these settings. Note that these settings aren’t persisted and will only be temporary.

image image

Making the settings permanent

Install the package containing v4l2-ctl

sudo apt-get install v4l-utils

Follow the instructions here to set up a udev rule to apply the required settings each time a particular webcam is connected. https://wiki.archlinux.org/title/webcam_setup#Persisting_configuration_changes

Old instructions using v4l2ucp

Obtain the Qt5 port of v4l2ucp from https://github.com/smunaut/v4l2ucp-qt5 (not available in the Ubuntu repositories)

Install needed dependencies

sudo apt-get install cmake qtbase5-dev qtchooser qt5-qmake qtbase5-dev-tools libv4l-dev

Build it

mkdir build
cd build
cmake ..

Run it


It should be then possible to adjust the exposure and other settings