[mythtv-users] mythfrontend is shearing video playback

[Mark Boyum]

On Thu, Mar 20, 2008 at 1:59 AM, John and Holly Klug <j.h.klug at gmx.net>
wrote:

> Brad DerManouelian wrote:
> > You might need to specify a modeline for your display. I would do some
> > research on that and see if you get closer to what you need.
> >
> >
> Modeline has been a sore point with me and my Nvidia driver. Usually the
> driver will pick a 1080i modeline for my TV, no matter what you do with
> modeline, unless it happens to match an existing EDID entry.  I need to
> write a custom EDID file.
>
> I did get a little closer to success.  I found that if I disabled
> TwinMode and use VLC in full screen at 1080i, all progressive source
> problems go away.  I disabled LCD in Myth so I could get an idea of CPU
> usage.  In VLC it is around 5% and a steady picture, and with
> mythfrontend it is more like 50% with shearing in motion shots, so I
> have to see what the difference is.  I assume it must have something to
> do with the display settings in Myth.
>
> I was using Nvidia's Twinmode to I could switch back and forth between
> an RGB monitor and the HDTV when I wanted to select an application.
> It's much easier without that pesky 50 pixels of overscan at each edge
> with my HDTV.  And I have tried adjusting the set, but I run into all
> kinds of distortion at the edges of the picture if I don't overscan.
>
> John
>
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Try disabling your monitor if you have both a monitor and a TV hooked up and
are seeing tearing on the television.  I had terrible tearing on my
television until I disabled my monitor in xorg.conf to make the TV the only
display.

-Mark
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