On 12/03/2021 08:18, Roger Heflin wrote:
On Thu, Mar 11, 2021 at 6:03 PM Roger Heflin
<rogerheflin(a)gmail.com> wrote:
> You might try uvcdynctl that is what I have been using as it directly
> talks to the webcam.
>
> It will show the controls that exist and let you query and set them.
>
>
uvcdynctrl that is.
FWIW, uvcdynctrl seems to return much the same info as does v4l2-ctl. At least for my
capture device.
[egreshko@meimei ~]$ uvcdynctrl -c
Listing available controls for device video0:
Brightness
Contrast
Saturation
Hue
[egreshko@meimei ~]$ v4l2-ctl -l
brightness 0x00980900 (int) : min=-100 max=100 step=1 default=0
value=0
contrast 0x00980901 (int) : min=50 max=200 step=1 default=100
value=100
saturation 0x00980902 (int) : min=0 max=200 step=1 default=100
value=100
hue 0x00980903 (int) : min=-90 max=90 step=1 default=0
value=0
v4l2-ctl seems just a tad bit more user friendly since it returns the current value for
the controls.
--
People who believe they don't make mistakes have already made one.