[mythtv-users] Scan displacement and over/underscan

[Otto Kolsi]

glen martin wrote:
> I have a similar symptom ... video seems to be placed offset from the
> display. I wind up with the thinnest possible blue bar along the top of
> the playing video, and somewhat thicker bar down the left side. The
> video itself could well extend past the right side of the display that
> little bit too. Hence: apparently offset more than the wrong size.
> 
> This is also true when I watch 16:9 content ... the blue bar top and
> left are at the edges of the content, not the edges of the screen.
> 
> Crop filter doesn't seem the right thing - I don't want to remove
> information from the stream, so much as get the stream centered on the
> display.  Screen settings seem to work for overscan, but I can't see
> what the offset controls do.
> 
> I've so far used the nvidia-settings to set TV Overscan up a little (to
> 12 now), which increases the displayed image size and therefore shifts
> that blue bar somewhat offscreen, but it seems a hammer to drive a
> screw. And the blue bar on the left is still visible as I'm starting to
> clip the border around the list of Recordings. And TV Overscan doesn't
> help much when the content is 16:9, because the top blue bar is at the
> edge of the content, which is partway down the screen. :)
> 
> For the record, this is an NVidia FX5200 card, myth 0.19, SVIDEO out,
> nvidia 8756 driver, X is in 1024x768 mode (though 720x480 does this
> thing too). Standard vs XVMC, no change.
> 
> Thanks,
> 
> glen

I have EXACTLY the same issue, with the same setup. Only difference is 
that I'm using SVN builds. And I've also used nvidia-settings with the 
same results.

It would be nice to know if this is a bug or just a configuration issue. 
I'm not that used to play with TV-out, X settings etc.. so can't really 
say which one it is.
-- 
   Otto