[mythtv-users] Hardware MPEG2 vs bt878

[Cory Papenfuss]

> Can someone with hardware an hardware mpeg2 card like a PVR-150 or
> PVR-500 and a bt878 based card send me screencaps from both cards
> comparing the quality of the two
>
 	bt878-based cards don't have comb filters.  That means that the 
luminance bandwidth (i.e. sharpness on screen) blows goats.  Maximum 
spatial resolution of such captures is about 400x480.  For cards with comb 
filters, it's more like 540x480.  That's the biggest difference in my 
experience... and I've captured test patterns with both to prove it (at 
least with my cards).

-Cory

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