[mythtv-users] HDTV?

[John Patrick Poet]

On Wed, 23 Jun 2004, Cory Papenfuss wrote:

>  	I would imagine that this would be useful to folks without XV then, no?
> Isn't the majority of the CPU power requirement for non-XV cards in the
> software scaling?  At the very least, it allows for non-scaled DVD resolutions,
> etc.  Does it use RANDR or just change the physical resolution (keeping the
> root X window and consequently the virtual resolution the same)?
>
> Interesting...
> -Cory

Do you mean XvMC?  Pretty much the patch will ONLY be usefull to people
using X in one form or another.  Either Xv or XvMC should work fine with it.

It uses xrandr to do the resolution switching.  As Doug suggested in his
original version of the patch, it make a system call rather than using
library calls, to reduce the library dependancy.

I have also discovered that it does not work well with "light"
destktops/window managers.  KDE and Gnome work fine, but ratpoison and XFCE
do not seem to do the right thing.

John



>
> *************************************************************************
> * The prime directive of Linux:  					*
> * 	- learn what you don't know, 					*
> * 	- teach what you do.						*
> * 						(Just my 20 USm$)	*
> *************************************************************************
>
>
> On Wed, 23 Jun 2004, John Patrick Poet wrote:
>
> >
> > On Wed, 23 Jun 2004, Cory Papenfuss wrote:
> >
> >>  	So this patch would be changing the X resolution to match the video
> >> being played, or does it change the mythtv scaling routine?
> >>
> >> -Cory
> >>
> >
> > It changes the X resolution, and *can* adjusts Myth's concept of the aspect
> > ratio.  It would be up to the TV to then scale/stretch the video.
> >
> >
> > John
> >
> >
> >>
> >> *************************************************************************
> >> * The prime directive of Linux:  					*
> >> * 	- learn what you don't know, 					*
> >> * 	- teach what you do.						*
> >> * 						(Just my 20 USm$)	*
> >> *************************************************************************
> >>
> >>
> >> On Wed, 23 Jun 2004, John Patrick Poet wrote:
> >>
> >>> On Tue, 22 Jun 2004, John Sturgeon wrote:
> >>>
> >>>> Depending on your modeline, you can trick your HDTV set into doing it
> >>>> for you.  If you can change your output resolution to 4:3 480p then your
> >>>> TV should recognize this and let you stretch it.  Right now, my output
> >>>> resolution is 16:9 540p so my TV (Toshiba 51S500) only gives me 16:9 and
> >>>> 16:9 zoom.  I'm willing to live with it.  I don't know of a way to
> >>>> toggle output resolutions on the fly.  If I could, then switching to a
> >>>> 4:3 resolution on demand would be great.
> >>>
> >>>
> >>> I have been working on this feature for the past couple of days.  Pretty
> >>> much works, but I need to do some more testing.
> >>>
> >>> I can now specify a display resolution based on the input video
> >>> resolution.
> >>>
> >>> I have taken Doug Larrick work which allows separate GUI and video
> >>> resolutions, and expanded it.
> >>>
> >>> The reason this is useful to me, is I have a 4:3 HDTV.  My TV automatically
> >>> goes into a vertical squeeze mode (resulting in a 16:9 aspect) when
> >>> presented with vertical resolutions above 480P.  I generally use Myth to
> >>> watch HDTV, but would like it to be "full screen" when I watch SDTV
> >>> material.
> >>>
> >>> I should have a patch ready to submit by this weekend.
> >>>
> >>> John
> >>>
> >>
> >
>