[mythtv-users] Cant get rid of the blue border lines (NVidia GForce 5200FX Card)

[Justin Hornsby]

Michael T. Dean wrote:
> Jonathan Tidmore wrote:
> 
>> On 11/30/05, *Jos Hoekstra* <joshoekstra at gmx.net 
>> <mailto:joshoekstra at gmx.net>> wrote:
>>
>>     Shardayyy schreef:
>>
>>     > Can't seem to get rid of what I have seen online as the "The
>>     blue line
>>     > problem", the blue border is on top and on the left side of the
>>     screen.
>>     >
>>     > I have also added this to my
>>     /home/mythtv/.kde/Autostart/myth-load.sh
>>     > file as suggested. (xvattr -a XV_COLORKEY -v 66048)
>>     >
>>
>>     "xvattr -a XV_COLORKEY -v 0" I have here ;)
>>
> I highly recommend:
> 
> xvattr -a XV_COLORKEY -v 1
> 
> or some other positive value that's close to 0.  A value of 0 is black, 
> and true black is very likely to be used on screen.  The value 1 or 10 
> is "close to black" (close enough you won't see the line), but is 
> different from 0 and far less likely to be used on screen.  Therefore, 
> if you use 1/10, black won't be replaced with video.
> 
> To see the effect, set the color key to 0 and start up an xterm with:
> 
> xterm -fg yellow -bg black
> 
> and put it on top of your video.  How's that for true, lightweight, 
> transparent windows (it actually allows you to write code for Myth while 
> watching recordings on Myth ;).  Now, set the color key to 1 and try the 
> same.
> 
> But, how often am I going to be working in an xterm on top of my video?  
> OK, maybe not often, but if using a color key of 0, *anything* that's 
> black will be affected (including black text on menus or in dialog 
> boxes).  This is very easy to see in xine with
> 
> video.device.xv_colorkey:0
> 
> in your ~/.xine/config file.  You'll notice the video window leaking 
> through your black menu text.
> 
>> Using xvattr doesn't really get rid of the line, it just gets rid of 
>> the blue by changing its color to blend in better with your TV 
>> border.  The way I got rid of the line altogether was adjusting my 
>> TVOverScan setting in xorg.conf so the video fit my TV better.
> 
> 
> Which doesn't get rid of the line--it just pushes it off the edge of 
> your TV so you don't see it.  Also, this only works if you're using an 
> NTSC/PAL output.  If using VGA/DVI/..., this won't work.
> 
> Mike

I can heartily recommend nvidia-settings.. it has a handy slider that 
you adjust the amount of overscan with.  You can then save the settings 
that work best for you & set nvidia-settings to load when your desktop 
comes up.

It helps if you have something to calibrate the display with, such as 
the excellent Digital Video Essentials DVD - but it's easy to make your 
own.  A typical overscan value used by programme makers (to ensure no 
essential info is missed off-screen) is 10% (the other 90% of the screen 
is called the 'safe area').  Just make a 720x576 (for PAL) or 720x480 
(for NTSC) (or your desktop resolution) bitmap, then put lines at around 
8 pixels laterally (10% ish) and 6 pixels vertically.  Adjust the 
overscan until you can juuust see the lines you drew on the bitmap ;-) 
This doesn't tend to work perfectly if the TV output isn't exactly 
centred, but it helps a _lot_.

Regards,
Justin.