[mythtv-users] Washed-out areas in video output

[Brian Wood]

On Jun 21, 2006, at 11:03 AM, Nathan Smith wrote:

> Hello everyone,
>
> When I play TV (live) in myth on my 24 dell LCD monitor, the white/ 
> light
> areas bleed into one another. It sounds like a contrast or brightness
> issue, but the black areas are not overly black (they look about  
> right),
> and skin tones look perfect. Also, when I watch live tv with my  
> normal old
> tv (using the tv-out port on my video card), the image looks fine.
>
> I tried changing the contrast on my monitor, and it just made the  
> whole
> image more grey, with the same washed-out effects that I was  
> experiencing.
> Could these washed-out areas be a function of XvMC (I heard XvMC is  
> broken
> in 0.19 anyway?), or is it caused by a setting I'm not aware of, or  
> are
> LCD monitors just not that great for watching tv with myth? Thanks
>

Good LCD monitors are fine for Myth, I use a 32" LCD and it looks  
fine, no different from watching any other source.

Bad LCDs look bad, just like bad CRTs look bad.

Since you mention using the TV out with your "normal old" TV, I  
assume you are using the VGA or DVI output of your video card to  
watch TV on your LCD ?

What sort of LCD monitor are you trying to watch TV on? how is it  
connected up?

If your LCD has an "auto" setup you might try that.

It sounds as though you might be overdriving your LCD with too much  
luminance signal. Unfortunately there isn't much you can do about  
that beyond your brightness control, which you don't mention trying  
but I assume you have.

If the LCD is old your backlight might be fading, you will get  
strange symptoms when that starts to happen around 30,000-50,000  
hours (usually).

If you still have problems you might see if you can borrow an LCD  
monitor from somebody, in order to try and confirm that the problem  
is with the monitor and not the VGA/DVI output of your video card.