[mythtv-users] optimizing nvidia tv-out for widescreen rearprojection tv connected via s-video
Willis, Ben
BenWillis at anderson5.net
Fri May 18 17:06:33 UTC 2007
I have a widescreen plasma tv with a 1024x768 'native' resolution. Would
using this xorg configuration give the best picture? Not trying to
hijack the email here but thought it would be good to ask in
conjunction.
I currently use this and wondered if I could get a better picture:
#######################
Section "Device"
Identifier "NVIDIA Corporation NVIDIA Default Card"
Driver "nvidia"
Option "DPMS" "false"
# BusID "PCI:1:0:0"
# Option "TVOverScan" "0.6"
EndSection
#Section "Monitor"
# Identifier "DELL E172FP"
#------------720p----------------------------
Option "metamodes" "CRT: 1280x720 +0+0"
Option "TVStandard" "HD720p"
Option "UseEDID" "TRUE"
Option "ConnectedMonitor" "TV"
Option "TvOutFormat" "Component"
Option "AddARGBGLXVisuals" "True"
#Option "FlatPanelProperties" "scaling = centered"
Option "TVOverScan" "0.6"
SubSection "Display"
Depth 24
Modes "720x480" "1176x664" "1280x720" "1920x1080"
EndSubSection
EndSection
Section "Monitor"
Identifier "TV"
Option "DPMS" "false"
#Modeline "1280x720" 74.48 1280 1336 1472 1664 720 721 724 746
-hsyn$
Modeline "1280x720" 74.16 1280 1392 1432 1648 720 725 730 750
+hsync$
Modeline "1176x664" 74.16 1176 1288 1328 1648 664 669 674 750
+hsync$
EndSection
Section "Screen"
Identifier "Screen1"
Device "NVIDIA Corporation NVIDIA Default Card"
Monitor "TV"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "720x480" "1176x664" "1280x720" "1920x1080"
EndSubSection
EndSection
Section "DRI"
Mode 0666
EndSection
Section "Extensions"
Option "Composite" "Enable"
EndSection
############################
Ben
________________________________
From: mythtv-users-bounces at mythtv.org
[mailto:mythtv-users-bounces at mythtv.org] On Behalf Of James Buckley
Sent: Friday, May 18, 2007 12:29 PM
To: Discussion about mythtv
Subject: Re: [mythtv-users] optimizing nvidia tv-out for widescreen
rearprojection tv connected via s-video
On 18/05/07, Daniel Agar <daniel at agar.ca> wrote:
> now that I've been using Myth for a while... starting to
wonder if I can
> get better picture quality, not that it's bad... seems pretty
darned nice
> really.. but one just never knows.
>
> My TV is a 46" sony widescreen rear projection TV, the only
connection I
> have available on my FE is s-video or composite.. (TV has DVI,
> component..etc..etc..). I have a feeling that s-video will be
the
> limiting factor for me. My card is nVidia Corporation NV34
[GeForce FX
> 5200] (rev a1)
>
> One other thing I've noticed, that perhaps someone can chime
in on. I
> route most of my video devices through my receiver/amp, for
whatever
> reason the nVidia driver/card will only initialize the tv-out
if I'm
> directly connected to the TV (don't have to be on that
particular input,
> TV doesn't even need to be on) or I have the receiver turned
on and that
> input selected. I'm guessing that the card/driver does
something to
> attempt to detect the TV, which fails when hooked up to my
receiver.
>
>
> The pertinent xorg.conf sections, I left out my other monitor
config,
> it's rarely hooked up and I don't think have any effect on
things. I'm of
> course open to any and all suggestions..
>
> tia.
>
> Section "Monitor"
> Identifier "TV"
> HorizSync 30-50
> VertRefresh 60
> Option "UseEdidDpi" "FALSE"
> Option "DPI" "100 x 100"
> EndSection
>
> Section "Device"
> Identifier "nvidia1"
> Driver "nvidia"
> Option "NoLogo" "true"
> VideoRam 128000
> Option "TVStandard" "NTSC-M"
> Option "TVOutFormat" "SVIDEO'
> # Option "TVOverScan" "0.6"
> Option "TwinView"
> Option "TwinViewOrientation" "Clone"
> Option "ConnectedMonitor" "TV"
> # Insert Clocks lines here if appropriate
> EndSection
>
>
> Section "Screen"
> Identifier "TVOut"
> Device "nvidia1"
> Monitor "TV"
> Option "TVStandard" "NTSC-M"
> Option "TVOutFormat" "SVIDEO"
> DefaultDepth 32
> Subsection "Display"
> Depth 24
> Modes "1024x768" "800x600" "640x480"
> ViewPort 0 0
> EndSubsection
> Subsection "Display"
> Depth 32
> Modes "1024x768" "800x600" "640x480"
> ViewPort 0 0
> EndSubsection
> EndSection
>
>
>
>
This probably isn't the suggestion your looking for, but you
might
consider swaping that FX 5200 for one that has dvi on it. I was
using an
s-video connection on my 37" lcd and the quality difference when
I
switched to dvi was incredible, completely worth the $40 spent
on the
card.
Other than that I don't see any main changes you could make with
your
xorg.conf, its about the same as the config I use on another SD
frontend.
You might consider adjusting the overscan with the
nvidia-settings tool
which will adjust in real time.
I second this, DVI/HDMI gives awsome pictures, and in some circumstances
allows one-to-one pixel mapping.
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