tldr/pages/linux/uvcdynctrl.md

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# uvcdynctrl
> A libwebcam command-line tool to manage dynamic controls in uvcvideo.
> More information: <https://manned.org/uvcdynctrl>.
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- List all available cameras:
`uvcdynctrl -l`
- Specify the device to use (defaults to `video0`):
`uvcdynctrl -d {{device_name}}`
- List available controls:
`uvcdynctrl -c`
- Set a new control value (for negative values, add -- before {{-value}}):
`uvcdynctrl -s {{control_name}} {{value}}`
- Get the current control value:
`uvcdynctrl -g {{control_name}}`
- Save the state of the current controls to a file:
`uvcdynctrl -W {{filename}}`
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- Load the state of the controls from a file:
`uvcdynctrl -L {{filename}}`