Originally Posted by gundam83
Same room. Not at the same time, but the splitter will always output the single signal to both displays. The problem is that if I want the image to fill up the screen, I'd have to manually adjust one or the other each time I switch between them.
Ok, it makes more sense now.
HDMI splitters rarely do the job since the digital interface relies on device communication & handshakes. With a splitter, this communication will not be correct.
I think your best bet is to buy a HDMI switch with 2 outputs; a 2x2 or a 4x2 matrix switch from Monoprice
Here's a 3D capable switch
I've never used these, so I don't know how it will handle resolution.
I have a 2 display setup but I specifically purchased an AVR with dual HDMI outs. And the AVR switches the resolution perfectly every time.
Onkyo TX-SR876 paired with a HD5450/HD6450/HD5750.