[mythtv-users] How I got great quality TV-out on my nVidia MX4000

[Cory Papenfuss]

> Seems ATI sells a DVI->component converter for their 8500 and 9xxx cards
> for $29.  Perhaps that is the way to go.  That should work with an SDTV
> with component video connections no?  Maybe cheaper than the cheapest
> vidcard you would want to buy and then an additional U$129 for the Audio
> whatsitcalled thingy I posted about earlier.
>
 	I'm pretty sure that all their doing is a trick.  Something I've 
though about doing, as well... just with regular video cards.  The R/G/B 
outputs on the vid cards aren't that special... they can output any data 
you want.  If you get one that can add a composite sync pulse (e.g. 
"sync-on-green capable), you'd be set to output component straight off the 
card.  Put Y data (with CSYNC) out the G DAC, and Pb/Pr out the other two. 
Then you'd just need to trick the card into *NOT* doing a colorspace 
rotation.  Something like a phony Xv type like YUY2 UYVY YV12 I420, etc... 
just no transformation.

 	I'm pretty sure that's what ATI's doing, and I'm also pretty sure 
it's a winders driver only thing.

-Cory

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* Cory Papenfuss                                                        *
* Electrical Engineering candidate Ph.D. graduate student               *
* Virginia Polytechnic Institute and State University                   *
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