[mythtv-users] 1920x1080i source on 1920x540p output, video is narrow

[John Patrick Poet]

Hmmm, I would think getting the DisplaySize (aspect) set correclty would be
necessary before adjusting over/underscan, but I could be wrong.

I personally use a 960x540 instead of 1920x540 because the fonts end up
being too narrow to read on my 40" 4:3 TV.  Doug Larrick has a patch which
allows Myth to switch into 1920x540 for showing video, then back out to
960x540 for the menues.  I have not gotten arround to bugging him for that
patch yet.

BTW, Doug is the person who originally told me about the DisplaySize
setting.  He is one of two or three people who deserve the most credit for
getting the HD-2000 to work with Myth.

John


On Wed, 7 Apr 2004, Daniel Walton wrote:

> I haven't tried that yet but I will.  Do I need to get my modelines perfected
> first so that the desktop correctly fits the screen or should that matter at all
> as far as this issue is concerned?
>
> Daniel
>
>
> On Wed, 7 Apr 2004, John Patrick Poet wrote:
>
> >
> > Have you used the "DisplaySize" option in the monitor section of your
> > XF86Config file?  It takes two values in millimeters which indicate the
> > physical size of your display.  X and Myth figure out your display aspect
> > ratio from these values.
> >
> > Try something like:
> >
> > DisplaySize 160 90
> >
> > Most of us have found, that using the real size of your display results in
> > font rendering which is too small to see.  Feel free to fudge the values,
> > just keep them in a 16:9 ratio.
> >
> > John
> >
> >
> > On Wed, 7 Apr 2004, Daniel Walton wrote:
> >
> > > I know I've been asking a new HD question everyday and I just want to say thanks
> > > for all of the help I've been getting on this list.  That said, I have another
> > > question :)
> > >
> > > I'm in the process of setting the modelines for my HDTV and I used Powerstrip to
> > > get a couple of modelines:
> > >
> > >  "848x480" 36.789 848 944 1024 1088 480 509 515 563 +hsync +vsync
> > >  "960x540" 40.806 960 1056 1136 1216 540 550 551 563 +hsync +vsync
> > >  "1920x540" 80.986 1920 2064 2256 2416 540 547 548 563 +hsync +vsync
> > >
> > > When I use the 848x480 or 960x540 modelines I can get the video to come out ok
> > > but if I use the 1920x540 one mythtv displays a very narrow picture.  On my 65
> > > inch tv I must have a 15 inch black bar on the left and right sides of the
> > > picture.  I should mention that the 1920x540 settings aren't perfect for my TV,
> > > there is some overscan but the desktop seems to be centered.  I'll try and tweak
> > > the modelines to eliminate the overscan but it doesn't seem like it is off
> > > enough to warrant the drastically narrow picture that I'm seeing.
> > >
> > > Am I missing something obvious or is myth just going nuts on me?  I'm on the
> > > latest CVS of myth with danielk's HDTV patches applied and I have a nvidia GF4
> > > MX440 video card.
> > >
> > > Daniel
> > >
> > >
> > >
> >
>
>