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mmorlan62  
#1 Posted : Tuesday, February 12, 2013 7:36:39 PM(UTC)
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Hi there,

I'm exploring my streaming choices as I consider moving from UStream. I've successfully streamed several programs during my vMix evaluation period to UStream via vMix External Video Output --> Adobe Flash Media Live Encoder and the UStream-provided XML file defining an FMS/RTMP URL destination.

Google Hangout is pretty slick and, while its web interface easily recognizes the vMix external output video stream (without the need for AFMLE) it doesn't see the audio stream. It recognizes every other audio device on my system but not vMix.

Any thoughts about some setting I can adjust to get the audio device to be recognized by the Firefox/Google Hangout like it is by AFMLE?

Thanks,

Michael
admin  
#2 Posted : Tuesday, February 12, 2013 10:38:50 PM(UTC)
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Hi Michael,

Google Hangout currently only supports audio sources with a Windows Kernel Driver instead of a DirectShow Audio Source which is what the vMix Audio is.
As an alternative you could try using the "Stereo Mix" option in Google Hangouts or software like the Virtual Audio Cable.

http://software.muzychenko.net/eng/vac.htm

Regards,

Martin
vMix
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mmorlan62 on 2/12/2013(UTC)
mmorlan62  
#3 Posted : Tuesday, February 12, 2013 11:10:03 PM(UTC)
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admin wrote:
Hi Michael,

Google Hangout currently only supports audio sources with a Windows Kernel Driver instead of a DirectShow Audio Source which is what the vMix Audio is.
As an alternative you could try using the "Stereo Mix" option in Google Hangouts or software like the Virtual Audio Cable.

http://software.muzychenko.net/eng/vac.htm
vMix


An excellent and thorough reply and solution. I'll research both solutions.

Thanks, Martin.

Michael
h2video.nl  
#4 Posted : Wednesday, February 13, 2013 6:19:17 AM(UTC)
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Hi Micheal,

Thanks for the tip about hangouts: it works without a problem.

I notice though that the VMIX input is mirrored by hangout so everything is the wrong way around.

How do you correct for that?

Greetings,
Stefan
mmorlan62  
#5 Posted : Wednesday, February 13, 2013 9:44:53 AM(UTC)
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h2video.nl wrote:

I notice though that the VMIX input is mirrored by hangout so everything is the wrong way around.


That mirroring is for your convenience, when you're watching yourself on camera and attempting to gesture at something on-screen. :-)

You can disable that mirroring by adding an app called "Hangout Toolbox." In the first tab of Hangout Toolbox, is a button that reads [Mirror my own video]. Clicking that will flip the video back and forth.

Best,

Michael
mmorlan62  
#6 Posted : Wednesday, February 13, 2013 4:08:30 PM(UTC)
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Hi Martin,

I installed VAC and when I choose the Virtual Audio Cable in the vMix | Settings | Audio | Default Audio Renderer and restart vMix, Google Hangout can see the VAC and renders the audio!

Unfortunately, it can't see the video stream anymore!

Reverting to "Default DirectSound Device" in vMix restores the video stream and removes the audio stream.

Meh.

This is becoming a tangled web of patched-in solutions. I'm suspecting Hangouts is not ready for vMix.

Michael

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#7 Posted : Wednesday, February 13, 2013 8:33:58 PM(UTC)
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Hi Michael,

Are you saying the vMix Video option does not show up in the list?
Make sure everything is setup and running in vMix before opening Google Hangouts and the video and audio should play correctly.

Regards,

Martin
vMix
mmorlan62  
#8 Posted : Wednesday, February 13, 2013 11:19:17 PM(UTC)
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Martin,

No. The vMix device still appears as an option in the Hangout. It just doesn't stream anything when the audio stream is working via VAC.

M
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#9 Posted : Wednesday, February 13, 2013 11:35:23 PM(UTC)
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What is showing in the video preview window? Blank or the vMix logo?

Regards,

Martin
vMix
h2video.nl  
#10 Posted : Thursday, February 14, 2013 6:44:35 AM(UTC)
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I did a test and no problem here. Working like a dream and set it up in 10 minutes.

I used a separate mic connected through a USB capture device. You can hook it up (select) with the camera in VMIX. But I just selected the mic input in the hangout selection, so separate from the vmix video.

maybe this is an extra option. The stereo-mix also works.

Greetings,
Stefan

PS delay in the feed is about 5-7 seconds and resolution not over 430p. the youtube captured resolution is low, so i also record at 720 and you can edit that and upload later and have the best on-demand quality.

Ustream seems to give better results (but it will cost you... but presume the price will come down!!)
mmorlan62  
#11 Posted : Thursday, February 14, 2013 1:09:25 PM(UTC)
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It Is ALIVE!!

Thanks, Stephan. That was the final piece of the puzzle. I had played with Stereo Mix but didn't have everything connected together in a proper audio pipeline.

Okay. Here’s what I learned:

vMix, like many professional video editing packages, allows one to choose to which device audio is rendered. I have a half-dozen choices on my system, between USB headsets, HDMI capture cards, the Virtual Audio Cable I added, and the motherboard’s own sound card. As I’ve discovered, choosing my USB headset is a dead-end for audio. But the mother-board’s sound card is not.

vMix, itself, does not appear as an audio device to Hangouts. But, the Windows “Stereo Mix” device does. The virtual Stereo Mix device is a DirectSound output device and provides a means to record anything that streams to the mother-board’s sound card speaker output. By default, Windows does not activate the Stereo Mix but it is easily enabled via the Windows Recording Devices dialogue.

So, the steps to stream audio from vMix to Hangouts are;

• enable Windows Stereo Mix device;
• set vMix Audio Renderer to the Windows sound card speakers, and;
• start Hangouts and choose the Stereo Mix device.

Basically, the audio data flow looks like this:

vMix --> DirectSound Speakers --> Stereo Mix --> Hangouts

And, that’s it.

Whew!

Martin, it might be a good idea to add procedures for connecting vMix to other popular streaming channels to the help documentation.

Best,

Michael
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