[mythtv-users] Use Xv Picture Controls

[Michael T. Dean]

On 07/12/06 13:06, Mercury Morris wrote:

>The Frontend Setting, Use Xv Picture Controls, has disappeared.  It was there
>
> (Frontend->Utilities/Setup->Setup->TV Settings->
> Playback->General Playback->General Playback(part 2))
>
>until I tried the 'F' key to adjust the Hue.
>
>After reading through the User, Dev, and Commit lists, where others had lost
>the same setting, I updated my system with SVN from today (July 12, 2006).
>But, the Use Xv Picture Controls setting didn't come back.
>
>One solution, recommended by several people, is to just use the 'F' key
>and set the Hue for good faces, skin tone, etc.  I'm looking for an
>alternative solution, so I can leave the Hue at 50%, instead of having
>it pegged up over 90%, just to see non-blue faces.
>  
>

How can a circular control be pegged (i.e. hue wraps around, so the 
difference between 1% and 100% is only 1%).  Unfortunately, there's no 
standard meaning for, e.g. 90%, so some cards' drivers define 0% as the 
default value and others define 50% as the default and ...

You just need to set the value to the appropriate value for your card in 
your frontend.

>Has anyone any idea how to get the Use Xv Picture Controls setting to
>appear again?
>  
>

Use an old version of Myth...

http://www.gossamer-threads.com/lists/mythtv/commits/205106#205106 says:

This also gets rid of the "UseOutputPictureControls" option. I don't see 
any reason why you would ever want to disable picture attributes if your 
hardware supports it, and it does no harm to have them enabled if the 
hardware does not support them.

In other words, they're always enabled.  Your use of the 'F' key to 
change playback picture controls proves this...  That's the way you 
access the Xv picture controls.

>One person suggested deleting the following settings from the database:
>
> PlaybackBrightness
> PlaybackContrast
> PlaybackColour
> PlaybackHue
>
>I'll try this step, but first I'd like to know if anyone else has tried this
>and not suffered some catastrophic meltdown of the frontend.
>

All settings in Myth have default values (I think the default for Hue is 
0), so you would just be going back to the Myth defaults--which may or 
may not be right for your video card.

Mike