video processing and 3D

That's what I am doing - direct to TV from Oppo for 3d video - works great.

Thanks for the advice. I didn't realize the Oppo has more than one HDMI output.
That'll work.

Processor needs HDMI 1.4 or just do it as above

The Oppo 93 and 95 have dual hdmi out puts. You can run one to your processor and one to your TV or projector. In this configuration you lose the video capabilities of your Anthem related to blu ray. The perks are that you don't have to buy a new processor. The Oppo players have pretty good video so the Anthem video may not be a huge benefit. I cannot speak to the pass through of a 3D signal.