Who says HTPC's automatically upscale???

try it with a dvd with no drm protection. Like rip it and then do that print screen.
Try it with some other software too. Like media player.

At least on my system, ffdshow osd says input 480, output 1080. And then the video card downscales it to 1366x768. TV says 1080i though.

Either you've got your screen set to 852*480, or the screencap is downscaling. There is no other possibility.

All Windows machines up/down scale, have done since Windows95.

Or use anydvd to remove copy protection on the fly and then you'll get whatever resolution you want.

Damn windows copy protection limits. What are you running Vista MCE?

By the way WinDVD is the worst quality DVD software player there is. Use Powerdvd it will always outperform WinDVD.

Troy

Because if you take a screen capture using the built-in screen capture utilities of those programs, they take the grab before it's rendered.

It's not the program that scales, it's the renderer (ie the video card/drivers/windows).

Do a Print Screen (if you're not using Overlay) and you'll get a screenshot of the upconverted picture.

FWIW, if PCs didn't upscale, you'd have to watch all your movies in a little box in the middle of your screen.