Just an update on this
Just an update on this (posted this at avsforum too):
First of all… yes, it really does work, but not exactly like I thought it was…
The RX-V867 is actually down mixing to 2-channel LPCM on each of its HDMI outputs (this might be because that’s all the TV supports). This is OK for my purpose, but I would imagine not so much for the person who wanted to run two separate 7.1/5.1 rooms from the same source using only HDMI.
In the end, I think I’m going to look for a cheap replacement receiver for the Yamaha (a different brand to avoid the remote conflict). It needs to do audio over HDMI but only (2-channel) LPCM… the other stuff (DD, DTS, DTS-MA, TrueHD, etc.) it doesn’t need to decode as the RX-V867 is already doing that for me…
Another alternative… would be to find a (cheap) HDMI audio decoder (again only needs to handle LPCM 2-channel) and pair it up with a 2-channel amp.