[mythtv-users] What should be the minimum video card memory I should look?

[Jonathan Rogers]

Niels Dybdahl wrote:
> Most LCD TVs will scale the input from the HDMI while they will not
> scale input from a VGA, so you could get better picture via VGA than
> HDMI.

If you think about it, you'll realize that an LCD TV will have to scale 
the VGA input anyway, since it's an inherently analog signal (unless 
it's smart enough to divine where the video card divides between 
pixels). The VGA scanlines may be mapped directly to panel lines, but 
the TV isn't going to know exactly where columns start and end.

Specifically, my cheap LCD TV has composite, SVideo, component, VGA, and 
DVI inputs and always scales them all. It has a VGA autofit button, 
which works, but is annoying because you have to do that every time you 
turn the thing on. On the other hand, the DVI modes I'm using fit pretty 
well since I tweaked them with xvidtune; the TV doesn't even know what 
the mode is; it just spits the pixels up there, which is why it would 
make more sense if it didn't scale the image.

I wish I could get it to turn off the scaler, since mapping pixel to 
pixel is one of the main reasons to for the existence of DVI. Also, I 
know that the native resolution is 1366x768, as many LCD TVs are, but 
video cards don't like modes with dimensions that aren't divisible by 8, 
so I have to use 1360x768 or 1368x768. Since those are so close, the 
pixels almost line up. If I move an xterm horizontally, I can see about 
five vertical "stripes" across the screen where columns of pixels from 
the video card bleed into each other, but between those regions, they 
appear to match exactly.

Jonathan Rogers