[mythtv-users] refresh rates and hd

[Steven Adeff]

On 10/31/06, Michael Wisniewski <wiz561 at gmail.com> wrote:
> On 10/30/06, Steven Adeff < adeffs.mythtv at gmail.com> wrote:
> > On 10/26/06, Michael Wisniewski < wiz561 at gmail.com> wrote:
> > > Hi!
> > >
> > >     I'm probably going to be getting a GeForce 7300 card to be able to do
> > > hi-def.  I'm planning on using the component out jacks on the 'pod' that
> > > comes with the pny version of this card.  I have a Sony XBR 32" tube tv.
> > >
> > >     I was wondering/hoping somebody could recommend some settings for me.
> > > I've heard some horror stories about how tv's start smoking if you don't get
> > > the information correct, and I would hate for this to happen.  I found the
> > > following table....
> > >
> > >
> http://www.timefordvd.com/tutorial/DigitalTVTutorial.shtml#RefreshRate
> > >
> > >    That seems like it has all the numbers I need for the xconfig.  Do
> these
> > > numbers look good?  Should I use something else?
> >
> > http://www.mythtv.org/wiki/index.php/Modeline_Database
> >
> > as well, you can also use any of the following which will tell the
> > nvidia driver to use the HDTV modes built in to the drivers,
> > "1920x1080_30"
> > "1920x1080_60"
> > "1280x720_60"
> > "720x480_60"
> Thank you for the response!
>
> I am having problems with getting my card working though.  Here's the
> details...
>
> I have a Sony 32XBR450 (1080i/480i/480p) input via component out from the
> dongle on the video card (Nvidia GeForce 7300 card).
>
> When I try to configure the xorg.conf file for "hd1080i" and startx,
> everything looks good.  But then, if I go into some of the myth menus (IE:
> setup menus/appearance), the horizontal lines flash and show up as double.
> Then if I exit, the box pops up with myth regenerating the views.  The
> vertical lines flicker extremely fast...kind of annoying.
>
> Anyways, I have a strange feeling that this might be related to the
> horizontal / vertical refresh rates, but not totally sure.  I currently
> don't have any of this set in my xorg file.  I thought I read somewhere that
> the latest nvidia driver (which is what I'm using from the nvidia web site)
> automatically sets the refresh rates.
>
> Well, if there's any ideas out there, please let me know!!!!

thats more or less normal with 1080i output over component video for
computers. I was getting the same interlace flickering using component
to my 1080i tube HDTV as well. It has to do with the progressive to
interlace conversion. You may want to run your GUI at 720p and then
have Myth switch the video output to match the source material, which
is what I did with mine.

also, everytime you go into the Appearances menu mythfrontend will
reload the video output stuff like you saw.

-- 
Steve
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