[mythtv-users] Picture quality

Guy Bayes guy_jobs at yahoo.com
Wed Jun 25 17:51:30 EDT 2003


interesting, i looked for this and did not find a -y
option in my test_ioctl

I am using ivtv from cvs around the end of may, do you
have a more recent version?

thanks!
Guy

--- Jeff Monks <mythtv at skunkeye.com> wrote:
> On Wed, 25 Jun 2003, guy bayes wrote:
> 
> > Hi all just wanted to post a general question
> about
> > picture quality, color, brightness, etc with
> regards
> > to MythTv/PVR-250.
> > 
> > [...]
> > 
> > Is this a video-out issue you think or an encoding
> > issue you think?  Anyone have any hints on how to
> > spice up the color, etc? Does it do any good to
> mess
> > with the color/contrast settings in the database?
> Any
> > PVR settings?
> 
> 
> I had a similar washed-out look to my recordings,
> and I fixed it (somewhat 
> - I will probably do some more tweaking, but it's
> *much* better now) by 
> playing with the brightness and contrast settings of
> the ivtv driver.
> 
> Use the test_ioctl program that comes with the
> driver to set the 
> parameters, something like:
> 
> test_ioctl -y brightness=132,contrast=75
> 
> You can also mess with the hue and saturation levels
> the same way.  
> "test_ioctl -h" will show you all the options you
> can change, as well as 
> the valid value ranges.
> 
> You can do this while watching a live recording and
> see the results almost 
> instantly.
> 
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