* Logitech c920 exposure settings with V4L2
@ 2014-04-30 14:10 Asanka
0 siblings, 0 replies; only message in thread
From: Asanka @ 2014-04-30 14:10 UTC (permalink / raw)
To: linux-media
Hello,
I am not sure my previous message was posted. So I am reposting with outputs.
I am trying to change exposure settings to manual and then to aperture
priority. I want to read the exposure absolute value set by the camera when
its in auto (aperture priority) mode. However after I switched from manual
to auto mode I keep getting the old value set my me in manual mode. This is
my output.
$ v4l2-ctl --device=/dev/video0 --set-ctrl=exposure_auto=1
$ v4l2-ctl --device=/dev/video0 --set-ctrl=exposure_absolute=2500
$ v4l2-ctl --device=/dev/video0 --get-ctrl=exposure_absolute
exposure_absolute: 2500
$ v4l2-ctl --device=/dev/video0 --set-ctrl=exposure_auto=3
$ v4l2-ctl --device=/dev/video0 --get-ctrl=exposure_absolute
exposure_absolute: 2500
Can anyone help me with this.
Thanks.
Asanka
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2014-04-30 14:15 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2014-04-30 14:10 Logitech c920 exposure settings with V4L2 Asanka
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).