[mythtv-users] Correct way to de-int NTSC on nVidia MX440?
zoiks2004-ivtv at yahoo.com
zoiks2004-ivtv at yahoo.com
Fri Feb 24 00:55:56 UTC 2006
Thanks, I'll try it out with my Monster RF modulator.
I'm suspicious, though, that such a difference in
image quality might be due to the S-Video input to the
TV. I did manage to improve overall video quality
using "nvidia-settings". (Of course, I checked all
the "sync to v-blanks".)
In any event, my main problem remains: syncing myth's
output to the TV so I can use bob deinterlace. Has
anyone managed to do this with nVidia S-Video (SD)
output?
--- Jeff Roberts <jeffsmu at gmail.com> wrote:
> not sure how helpful my info is, but I've played
> with a variety of pci
> geforce cards with s-video out, with mostly the same
> results. im
> pretty sure that one of them was an mx440. the
> s-video looked like
> crap no matter what i did on any of them. one day
> for fun i ran the
> s-video into an rf-modulator that was run into the
> tv, set to channel
> 4. the picture looked so much better that i just
> left it that way,
> even though its sort of hokey. dont know what the
> rf modulator does
> to the signal but it sure makes it look better.
>
> On 2/23/06, zoiks2004-ivtv at yahoo.com
> <zoiks2004-ivtv at yahoo.com> wrote:
> > Bump.
> >
> > Is there really no one who knows how to get this
> > working?
> >
> > Alternatively, does anyone know that you *can't*
> get
> > this working correctly.
> >
> > Graphics card: MX440 nVidia-based with S-Video out
> > Myth: 0.18.1-fixes
> > Deint desired: Bob
> >
> >
> > --- zoiks2004-ivtv at yahoo.com wrote:
> >
> > > Is there a decent way to deinterlace NTSC with
> the
> > > S-Video output on an nVidia MX440? I just can't
> > > seem
> > > to get it right. I have a 37" Toshiba (non HD)
> TV,
> > > so
> > > artifacts from the interlacing are quite
> obvious.
> > >
> > > I've found that only the bob ('n weave)
> deinterlace
> > > truly deinterlaces properly. (Though I think
> kernel
> > > deinterlace and linear blend may look a tad
> better
> > > than not deinterlacing.) The problem is, bob
> > > deinterlacing doesn't maintain sync, so when I'm
> > > watching video, it will go in and out of
> jittering
> > > the
> > > image. When it's in sync it looks great.
> > >
> > > I've tried to run nvtv on the box, but it always
> > > segfaults. I eventually found in the
> documentation
> > > for nvtv that it won't work with MX440 video
> cards.
> > >
> > > Anyway, if anybody out there has managed to get
> good
> > > deinterlacing with the TV output from a MX440,
> I'd
> > > really like to know how it's done. Is there
> some
> > > way
> > > to align the scanlines of the TV out to
> every-other
> > > line in the 640x480 screen, for example?
> > >
> > > FWIW, the modeline I'm using for video output
> is:
> > >
> > > ModeLine "640x480" 25.20 640 664 760 800
> 480
> > > 491
> > > 493 525
> > >
> > > The monitor section looks like this:
> > > Section "Monitor"
> > > DisplaySize 240 180 # mm
> > > HorizSync 30-50
> > > Identifier "Monitor[0]"
> > > ModelName "M991"
> > > # Option "DPMS"
> > > VendorName "Toshiba"
> > > VertRefresh 60
> > > UseModes "Modes[0]"
> > > EndSection
> > >
> > > And the "device" section looks like this:
> > > Section "Device"
> > > BoardName "GeForce4 MX440SE"
> > > BusID "1:0:0"
> > > Driver "nvidia"
> > > Identifier "Device[0]"
> > > Screen 0
> > > VendorName "NVidia"
> > > Option "NvAGP" "1"
> > > # Option "NoLogo" "true"
> > > Option "HWCursor" "true"
> > > Option "RenderAccel" "true"
> > > EndSection
> > >
> > > While the module section looks like this:
> > > Section "Module"
> > > Load "glx"
> > > Load "type1"
> > > Load "extmod"
> > > Load "dbe"
> > > Load "freetype"
> > > Load "v4l"
> > > EndSection
> > >
> > > In the "Screen" section I have
> > > Section "Screen"
> > > DefaultDepth 24
> > >
> > > SubSection "Display"
> > > Depth 24
> > > Modes "640x480" "400x300" "320x240"
> > > Viewport 0 0
> > > EndSubSection
> > >
> > > Device "Device[0]"
> > > Identifier "Screen[0]"
> > > Monitor "Monitor[0]"
> > >
> > > ##
> > > Option "TVStandard" "NTSC-M"
> > > Option "ConnectedMonitor" "TV"
> > > Option "TVOutFormat" "SVIDEO"
> > > Option "TVOverScan" "0.8"
> > > ##
> > > EndSection
> > >
> > >
> > > Any help is greatly appreciated!
> > >
> > > Thanks!
> > >
> > >
> > > _______________________________________________
> > > mythtv-users mailing list
> > > mythtv-users at mythtv.org
> > >
> >
>
http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> > >
> >
> > _______________________________________________
> > mythtv-users mailing list
> > mythtv-users at mythtv.org
> >
>
http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> >
>
More information about the mythtv-users
mailing list