[mythtv-users] SD material on HD display - Scaling Issues

[James Buckley]

Yes I can drive it by VGA. Seems odd that VGA would be better than DVI
though, (as DVI is like the digital form of VGA). Does your TV do any
scaling on the picture?

I'm also grabbing DVB-S directly, but my TV just won't allow 1:1 pixel
mapping at 50Hz (I have no idea why it does at 60 and not at 50, did
somebody forget Europe?).

I'll try it tomorrow...

James

2008/5/12 Nick F <nikos.f at gmail.com>:

>   On 5/12/08, James Buckley <xanium4332 at googlemail.com> wrote:
> >
> > At the moment most of my TV content is SD. My mythfrontend is attached
> > to a HDTV, but is not at a 1:1 pixel ratio (i.e. the picture gets a little
> > up/down scaling inside the TV, nothing I can do about it unless I get a new
> > TV, or the UK suddenly switches to 60Hz video). If I compare the video
> > quality between my sky digibox (which is just over scart) vs. my mythbox
> > over DVI (1280x720), the picture is much sharper on the digibox. Obviously
> > HD material (BBC-HD) looks awesome.
> >
> > Now I think this is because my tv (LG 37LP1D) is doing a good job of
> > upscaling the sky input. The thing is some of the other family members won't
> > be happy with mythtv's output until the perceivable quality is the same. (if
> > you get close to the screen, mythtv's output has much less artiefacts than
> > from the digibox, but alas you can't really notice them if your on the
> > couch, unlike the blurryness).
> >
> > So, other than buying a new TV (which is not out of the question, but
> > would need to support 50Hz, 1:1 pixel mapping, at HD and SD resolutions),
> > are there any options I have for improving picture quality. Are there any
> > filters that exist (lanczos comes to mind)?
> >
> >
>
> Are you able to connect with a VGA to your television?  I'm driving 2
> different 720p screens (one a plasma the other LCD) via VGA - and the
> picture quality is much better with Myth than the Sky digibox.  In fact my
> wife was commenting the other day that we almost don't need HD - since the
> picture quality we have is so surprisingly good.
>
> My feed is DVB-S captured directly by Myth (ie no converter box).
>
> I've tried to get DVI and HDMI working a few times, and have never managed
> to get as good a picture quality as with VGA.
>
>
>
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mythtv.org/pipermail/mythtv-users/attachments/20080512/448fc939/attachment-0001.htm