[AG-DEV] Additional Grabber settings

Douglas Kosovic douglask at itee.uq.edu.au
Fri Jun 29 19:04:50 CDT 2007


On Fri, 2007-06-29 at 10:48 -0700, Todd Zimmerman wrote:
> Jason Bell wrote:
> > G'day All
> > 
> > I don't know if there is an equivalent under windows or whatever, but I
> > notice with V4L2, there are some additional grabber controls, these
> > being Gamma and Gain.
> > 
> > What is the chance of making these potentially a savable configuration
> > item???
> > 
> > As I find I have to adjust my USB camera setting each time when vic
> > starts.  Does vic have a default file like rat has????  Or should I
> > create a vic.tcl file to configure these settings????   
> 
> 
> Here, here!  After using the new Vic for the last few weeks - and having to set this every time I
> change venues... I could _really_ use a way to set this automatically.

Your webcam driver kernel module should be remembering it's settings
till a reboot or it's rmmoded. Which driver you using? You could
probably also set your preferred values in /etc/modprobe.conf.

For some webcams like the UVC ones, you need to set the 50Hz flicker
prevention or 60Hz flicker prevention which needs to be set outside of
vic. Unfortunately the flicker prevention control is a private control
specific to the UVC webcam driver, so can't just be added as a generic
V4L2 control.


Cheers,
Doug





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