The short version:
Skype video needs 32bit color quality to do DirectX hardware accelerated video.
The long version:
A few weeks ago I wiped clean an old laptop we use for Skype and reinstalled WindowsXP. But after the reinstall, Skype video calls were low quality and the framerate was much lower than I remember before I reinstalled the OS.
So I followed Skype's instructions to get hardware-accelerated video:
1. Updated graphics driver.
2. Installed DirectX 9.0c
3. Ran the DirectX diagnostics and tests, but still no change on the Skype video quality.
I could tell Skype was still not using DirectX hardware acceleration because the CPU load simply viewing my own webcam in the Video Options menu was over 40%.
Exploring my video card settings, I saw that for some reason the color quality was set at 16bit, when normally it should be at 32bit. Changing that solved the problem. Go figure.
Nov 7, 2011
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