[mythtv-users] What do I have to do to get HD working?

[Steven Adeff]

On 4/15/06, Daniel Kristjansson <danielk at cuymedia.net> wrote:
> On Sat, 2006-04-15 at 13:38 -0400, Steven Adeff wrote:
> > On 4/15/06, Joe Votour <joevph at yahoo.com> wrote:
> > > But, does that mean that you use any deinterlacing at
> > > all?  I suspect not, if you're running the TV
> > > interlaced.
> >
> > You'd think, and from what people say OpenGL is supposed to let me
> > not, but I get really bad frame flicker if I don't use BOB, with or
> > without OpenGL Vsync enabled. In fact, and I have to test this. I
> > think if I disable it in MythTV and use the GL vsync from
> > nvidia-settings it actually works this way. But I need to play some
> > more. This change for me has been a pleasure and painful. I'm playing
> > with 1080i, XvMC and OpenGL vsync all at the same time and it seems
> > like something in the whole equation doesn't quite work right, at
> > times I feel like going back to 7676 and running in 720p again...
>
> To avoid running deinterlacing you need to match the frame refresh
> rate and the resolution of the monitor exactly with the video. Which
> means for 1080i you need to run full screen with a 1080i modeline
> (i.e. 30 frames per second + interlaced *), and without MythTV overscan
> and without time stretch.

check.

> Also, if you are displaying to an LCD or Plasma rather than a CRT
> the monitor is almost certainly+ deinterlacing internally anyway.

I'm not.

> * This one catches a lot of people, you can not use a 60 frame per
>   second interlaced modeline unless you have an extremely smart
>   deinterlacer in your monitor. You also don't want a 30 frame per
>   second modeline for normal non-TV use, so this means you really
>   have to use MythTV's XRandR support unless this is for a dedicated
>   MythTV box.

Its a dedicated backend, so I only need one 1080i modeline at 30fps.
How can i tell what I'm running at?

my current 1080i modeline is:
ModeLine       "Sanyo1080i" 74.25 1920 1960 2016 2200 1080 1082 1088
1125 Intelace

--
Steve