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My Logitech camera (C300) is properly detected and present at /dev/video0. However, by default the image has contrast and saturation set to maximum, which significantly degrades the image quality. I can change the settings using guvcview but after quitting the settings are back to normal (I am using mplayer to capture frames). How can I make the changes I make in guvcview permanent?


It looks like the guvcview's settings are indeed "sticky" - if I open it again, the image stays the same. So it is something the other programs are doing to the initialisation of the webcam (same problem on mplayer and vlc)

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I fixed a similar problem following these steps (adapted from source):

$ sudo apt-get install mercurial
$ hg clone
$ cd v4l-dvb
$ sudo make menuconfig <-- dont change anything, just "Exit" and save changes
$ sudo emacs v4l/.config <-- change CONFIG_DVB_FIREDTV=m to CONFIG_DVB_FIREDTV=n
$ make
$ sudo make install
$ v4l2ucp <-- Auto Gain off
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