[mythtv-users] Blending/spanning two crt projectors using myth and nvidia nview

match at ece.utah.edu match at ece.utah.edu
Thu Feb 23 02:10:16 UTC 2006

On 22 Feb 2006 at 11:44, Chad wrote:

> > I drive my projector from two different computers. The other computer is a
> > WinXP box with an ATI 7500 card. I let that box upsample everything. Even
> > NTSC sources look good at 2100 x 1575 or so.
> >
> > BTW, the WinXP picture is superior to my Myth box with an nVidia 5200...
> >
> > Marvin Match
> >
> >
> > _______________________________________________
> I've heard that the ATI card produces a nicer image, even in linux. 
> But it's for the XvMC and ease of setup that people choose the Nvidia
> card over the ATI card, at least, that's my gathering ;)  I'd go with
> ATI and get a faster CPU in a heartbeat if I didn't hear so many bad
> things about ATI; probably the most important to me being that I've
> heard they cripple their linux drivers (when compared to the windows
> drivers equivilents).  If this has an ounce of truth to it, I'd spit
> on ATI if I ever walked passed their corporate offices.
> As for XP, I'll install Windows on a computer in my house right after
> they release a working copy and remove the deathtrap EULA ;)  (The
> exclusion is my wife's laptop, it's hers so I leave it alone, and it
> came pre-installed with XP-Home, so I suffer with it, and ensure my
> entire LAN is windows available (Samba, etc) ).

Yeah, I hear you, Chad. I'm no fan of of M$ either, though I'm forced to be fluent in it for 

My several Linux boxen (including a MythTV backend with 2 TB of storage, 3 PVR-
250/PVR250MCE cards and one HD3000) all sport nVidia MX440 or FX5200 cards. 

Just making a point, that being that upscaling can be effective for a good front projector, and 
does not require enormous horsepower.

The ATI cards give a better picture (assuming that your display device is capable of taking 
advantage of the difference) and that's a fact. But the only good drivers (as far as I'm aware) 
are for WinXP. I use the WinXP box when viewing DVD movie rentals and a few shows on 
cable that we watch when they're broadcast. WinXP with one commercial app and a few 
shareware programs is a good solution for just these 2 tasks. Heck, this particular box isn't 
even on my network, has only a cheap BT capture card, and stores nothing.

Everything else at my house is Linux and MythTV, or at least dual-boot in the case of my 
wifes and daughters machines. In fact my daughters computer was Linux only until she 
needed a few Windows-only apps for college. 

Oh yes, in the interest of full disclosure, I'm pretty certain that it's the analog circuitry on the 
ATI cards that makes the difference, and my projector is analog only. So, unless you are 
using some form of analog RGBHV it might not make a difference... I should have said that in 
my last post.


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