Originally Posted by chileboy
I think I'm confused because the manual says:
which seems to imply that in "Dual" mode, it sends both audio and video over both outputs, so I was thinking since the audio will always be disabled on the display, I could just set up one of the Anthem "sources" to send the video (from HDMI-1) and set another source to use the same connector but not send the video anywhere, because I would switch to a different HDMI input on the display that is connected to HDMI-2 on the Oppo.
Obviously I'm missing something.
Yes the Dual Display choice will make whatever compromise is necessary to make sure audio and video gets output on BOTH HDMI outputs. The problem is, you get limited to the lesser of what each device will accept.
It doesn't matter that you are not actually USING audio on your 3D TV. What matters is what it says it will accept during the HDMI handshake it makes with the OPPO. And odds are it won't accept things like Dolby TrueHD or DTS-HD MA or LPCM 5.1 96KHz or LPCM 7.1 Which means the HDMI 2 output won't be able to send those to the Anthem. Typically, but not always, a TV will only accept Stereo LPCM. Some will also accept lossy DD 5.1 or DTS 5.1. But that's about it. So since HDMI 1 can't ship out anything fancier than that, then neither can HDMI 2.
That's what the Split A/V mode is for. It *MUTES* the audio on HDMI 1 when both outputs are "live". Thus no audio handshake has to happen on HDMI 1. Similarly, HDMI 2 gets a "safe" video format when both outputs are live -- a video format capable of carrying the highest bit-rate audio formats, but one that AVRs are pretty much guaranteed to accept. That's how 3D works for example. 3D video goes out on HDMI 1 but HDMI 2 sends a simpler video format to the AVR -- along with the best quality audio.
When only ONE of the two outputs is "live", the Split A/V vs. Dual Display setting is ignored and the "live" output -- whichever it is -- negotiates for the best possible video AND audio to the next device in the chain.
By the way, did you really mean that you will be using an original AVM 50? Or do you have the newer AVM 50v? The AVM 50v is more flexible in what you can send it for audio.