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David Durant
Asked: 2020-08-10 16:35:13 +0800 CST

Are guvcview settings only picked up by that app?

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In guvcview I can set up my webcam to be exactly how I want it to be. However, when I fire up Cheese or any browser-based video conferencing tool like Google Meet the camera image comes up with the initial settings.

Is there any way to make the configuration I set up in guvcview the default for all uses of the webcam?

guvcview

2 Answers

  1. Guvcview stores all options into a configuration file stored in the user home directory under .config/guvcview2/video0. The file is opened at start and it is rewritten at exit. By removing the file the default values will be loaded, and a new file will be written at exit.

    The documentation for guvcview doesn't mention anything about systemwide configurations, so to make your configurations available to other apps, you can install "V4l2-ctl" using sudo apt-get install v4l-utils and create a startup script that uses v4l2-ctl commands to set your desired parameters. For instance:

    v4l2-ctl --set-ctrl brightness=200
v4l2-ctl --set-ctrl auto_gain=0
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  2. After guvcview installation open gucview in a regular preview mode way and adjust your video image settings: exposure, contrast, brightness, wb, saturation, etc...

    I recommend saving those settings into your profile: File->Save Profile

    then, from your terminal run

    gucview --control-plane

    or with a short flag

    gucview -z

    and now check you skype, teams, zoom, etc..

    now you can use your software with image settings defined in gucview

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