When you do the HQV tests, could you investigate drivers? They have a desktop color and a video (movies) section. With my 4670, it's not always clear which videos the video section works on. It varies between Win 7 and XP. Basically it works on movies in the overlay, and/or players with hardware acceleration turned on. In Win 7 it works on the flash videos, in XP it doesn't. In XP in video you can adjust Gamma, in Win 7 you can't. In XP the brightness etc. adjustment in video is independent from the desktop. In Win 7 desktop adjustments to brightness etc. affect the videos, even in the overlay. In XP the Dynamic Contrast button is there, but does nothing.
After driver 10.4, in XP, video brightness and other adjustments just don't work. If you want to adjust the video you have to go back to 10.4.
Contrast this with nvidia. As far as I know, their drivers work properly, with Gamma adjustment for video, and video brightness etc. separated from desktop brightness etc.
But, in the last nvidia drivers I tried, there are problems with profiles. While you're in video, you can't save the settings as a profile. You have to go to desktop. Then you can save them. You used to be able to right-click on the tray icon and select your profiles. In the last nvidia driver I checked, you couldn't do that. At least you can do that in the ATI drivers. You can't sort the darn things, though.
So, to select a profile in nvidea you'd always have to open the control panel. In ATI, if you've come upon a dark video and you have several profiles to try on it, it's fast and easy by right-clicking in the tray.
I don't think the programmers actually use the control panels themselves. Such awful logic!
One last thing I'd like to know from the coming article is if the nvidia video section works on flash videos (with the 10.1 flash) in XP. It must in Win 7.