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[webplus]

Anyone else not able to view video playback in iTunes?  The audio plays but the video window is either blank (dark grey) or has a still image from the video.

I've got 2 graphics cards available - Nvidia GeForce 8400 GS 256 MB (EFI string) and Nvidia GeForce 9400 GT 512 MB (NVEnabler64.kext in S/L/E). Both provide full 1080 HD resolution, transparent menu bar, play DVDs and other video fine in QuickTime, but never video trailers in iTunes. Although they did play in Lion DP2 but stopped working after updates and DP3. Connection is DVI to HDMI display port.

[Kyle_C]

FWIW, I don't have any issue with this using Intel HD Graphics 3000 in DP3.  Maybe it has something to do with the Nvidia video acceleration kexts.