[mythtv-users] HD1080i or HD480i? 6600 Component out

[Steven Adeff]

On 2/7/06, Alex Brekken <brekkal at gmail.com> wrote:
> On 2/7/06, Steven Adeff <adeffs.mythtv at gmail.com> wrote:
> > On 2/7/06, Jay R. Ashworth <jra at baylink.com> wrote:
> > > On Tue, Feb 07, 2006 at 09:48:32AM -0600, Alex Brekken wrote:
> > > >    >>your TV is native 1080i output at 1080i if its native at 720p
> > > >    >>output at 720p. I don't think XRandR works with TV-out, only
> monitor
> > > >    >>out,  so  you  might  want  to try connecting to
> your TV via the DVI
> > > >    cable.
> > > >    So  how  exactly  to  do I determine what the native mode of my TV
> is?
> > > >    All  I can determine from the manual is that it "supports 1080i,
> 720p,
> > > >    480i, 480p."
> >
> > this just means it accepts those as inputs. Your manual may or may not
> > tell you what modes are native, it would be under a section showing
> > more detailed specifics. avsforum.com may be of some help here as
> > well. Very few displays will do both 1080i and 720p native, odds are
> > it does 1080i native and not 720p, but definitely find out for sure.
> > (respond with your model # etc if you cant find anything and I'll see
> > if I can find for you)
> >
> > > For your purposes, I believe that means that you're native at *all*
> > > those resolutions.  Though the TV *might* be scan-converting one of
> > > them.
> >
> > native is what the display device outputs as, not what it accepts.
> > Most plasma TV's or example are not native at any HD resolution but
> > scale what you feed it to its native resolution . Most LCD's are
> > native at the highest advertised resolution, Tube tv's can be native
> > in a number of modes, RPTV can also be native in a number of modes,
> > but are usually like LCD's and native at the highest advertised
> > resolution.
>
> Well I haven't been able to determine which is native for my set.  (Samsung
> 40" LCD, LN-R409D)  However, after searching around on avsforum I did find
> this thread:
>
> http://www.avsforum.com/avs-vb/showthread.php?t=622561&highlight=samsung+409+native
> Like the OP in that thread, my native resolution is also 1366x768.  I guess
> I'm not understanding what the relationship is between resolution and output
> modes like 1080i, 720p, etc.  Does forcing a particular resolution in my
> xorg.conf file determine which mode gets used?  Also, since I'm using the
> VGA input on my TV, would it even matter if I set a particular "mode"??
>

your native mode is essential 1280x720, also known as 720p. You should
try and get the modeline your EDID prints and go from there. I have a
feeling the extra resolution may be to alow for the 1280x720p to be
displayed with no noticeable overscan.

--
Steve