[mythtv-users] Correct way to de-int NTSC on nVidia MX440?
Jeff Roberts
jeffsmu at gmail.com
Thu Feb 23 22:46:02 UTC 2006
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!
> >
> >
> > _______________________________________________
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> > mythtv-users at mythtv.org
> >
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> >
>
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