Best CCC settings for a PC-to-HDTV connection?

SANAFABICH

SANAFABICH

New member
Hi everybody, and thanks in advance to those brave enough to help me on this problem :heart: :nag:
A friend of mine owns a 720p LCD TV, and one day I brought my PC to his place to try this amateur HTPC connection. My computer has a radeon x1950pro with two DVI outputs, so using the dvi-hdmi adaptor that came with the card, the result was good (not ideal) so I have a few questions:
1. The LCD TV has a maximum resolution of 1366x720. If I select the 720p mode on the CCC, the coloring is amazing but I get some underscan, not much but noticeable enough. If I set the display resolution to 1360x720, the picture fills the whole screen perfectly but colors don't look as bright and strong as when I selected the 720p mode. the tint and hue are right, but the colors look washd out. What is up with this? I made the colors look brighter modifying the aVIVO settings but it's not the same. So, What are the best CCC settings for a 720p LCD TV with a max. resolution of 1366x720??
2. My friend's computer has a radeon 9250 with one DVI output. I'm aware this card doesn't support CCC, but it does support 1360x720 resolutions, but the colors don't look quite right, the hue and tint seem a little off. I know this is a pretty old card but, Is there any way to improve the image quality?
 
There's nothing about changing resolution on the video card that should result in a change in hue or tint; these problems are either something other than described, or a fault of the TV processing. Perhaps the TV is differentiating between input from a PC and input from a DVD/Blueray player/cable box and applying color space conversion when it sees other than a normal HD resolution coming in? It could also be that the video card is only using the BT709 color space (for high definition TV's) if you set it to a normal HD resolution, and 1360 X 720 is not. Either way, if color space conversion is indeed the problem, it would be fixable by adjusting the brightness and contrast controls in CCC, or in the TV itself. Although it is the "proper" way, I only recommend doing the adjustment on the TV when separate adjustment profiles are available for each input to the TV, otherwise you're cannibalizing other inputs for the sake of the PC.

The newer ATI cards all should have adequate processing overhead to do the brightness/contrast adjustment properly without sacrificing image quality (color banding and such). Oh, and there is a separate color space issue involved when playing standard def. and some HD files from an ATI card that should be addressed...look up "UseBT601CSC=1" in google for a description of the fix for this issue.

Here is a good read on the subject from several view points:
http://thegreenbutton.com/forums/thread/303062.aspx
 
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