Can i make two default HDMI audio outputs from GTX680? (both outputs the same sounds)

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iJihad

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Mar 29, 2011
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Hi,

I have two GTX680s, and i'm using TWO HDMI outputs (or one HDMI, one DVI), one for the receiver and the other one for Live HD Gamer (recording device). I'm mirroring same screen on both outputs.

My problem is, i only could choose ONE HDMI Audio output. So on the Recording device i only get video signal.

I want to make BOTH HDMI outputs the same exact PC sounds. (7.1 pass-through).

Is there ANY way i could make them both output all PC audio? :(


PS: I know the Live Gamer have HDMI output also, but it doesn't support HD audio passthrough :( and i bought the GTX680 mainly for the passthrough.


Thanks!
 
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nukemaster

nukemaster

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Nov 23, 2004
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Unfortunately, Windows was designed to use only one sound card at a time. I know in the past people have used software like Virtual Audio Cable, but I personally have never even tried it.

While you can run more then one with plugins for programs like winamp(you still have a delay because they are not playing in perfect sync.)

With analog, a Y cable would solve this issue(5 k load is nothing :) ), but both your devices lack it. An HDMI splitter seems like the only real option to do this.

Computer -> Splitter -> TV/Receiver and Game HD Recorder.

It is not perfect, but as long as it is a good splitter, you should not loose anything quality wise.
 
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I

iJihad

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Oh, thanks a lot!

So there is splitters that accepts to split lossless (and 7.1 surround) audio? (True-HD & DTS HD) with no noticeable loss of quality?

 
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nukemaster

nukemaster

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Nov 23, 2004
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as an example, this one claims to.

http://www.monoprice.com/products/product.asp?c_id=101&cp_id=10113&cs_id=1011306&p_id=8204&seq=1&format=2

Only thing I am not seeing listed is HDCP. It is very hard to split HDMI and keep HDCP because many companies caught trouble for stripping away the HDCP.

You would have to contact the store or product makers for confirmation of this. HDCP is NEEDED for bluray playback(and also use of the HDMI port of the PS3) without other software to bypass it(the kind of software the forum rules simply say is a big no no here.).
 
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WyomingKnott

WyomingKnott

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Aug 29, 2006
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Considering that HDCP includes negotiation between the source and the device that uses the signal, you'd need the splitter to act as a receiving device, get the signal, and negotiate separately as source with each of the actual devices.

If I had to guess, that violates the rules. Those HDCP people are awfully stuffy about letting ordinary people use their signals in other than vanilla ways. The pirates, of course, have no problem defeating it.

EDIT: I'm wrong, reviewers report that they can use it with HDCP content. Silly me. Just because the specifications didn't mention HDCP. Unless, of course, they hire people to write those reviews...
 
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nukemaster

nukemaster

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Nov 23, 2004
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Older splitters all bypassed HDCP(lots of users picked then up to use with HDMI DVR cards). But yeah, it is very hard to get a product to market now in that state.

Pirates don't even use this, they just rip the blu-ray movie and call it a day. It only hurts legit users in the end(IMO).
 
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