Question / Help AJA UTAP DEVICE WITH OBS

bobs

New Member
I HAVE A AJA UTAP DEVICE CONNECTED TO A LAPTOP WITH USB AND THE SOURCE IS HD SDI WITH EMBEDDED AUDIO, I GET THE VIDEO BUT NO AUDIO. I HAVE BEEN THROUGH ALL THE SETTINGS AND BELIEVE I HAVE IT SET CORRECTLY BUT I AM MISSING SOMETHING. USING WIN10
 

Narcogen

Active Member
I add the UTAP to OBS as a Video Capture Device.

In the properties of the device, near the bottom of the pane, there is a pulldown menu under the heading "Audio Output Mode".

In this, select "capture audio only". That sends audio from the device to the audio mixer in OBS.

In the Mixer (Edit > Advanced Audio Properties you can turn on monitoring for that device if you need to hear it locally. Set which audio device you use for monitoring in Settings > Audio > Monitoring Device

(Don't use a device you're recording from, obviously.)
 

bobs

New Member
yep done all this but still no audio on the meters or anything to hear, does the microphone come into play with utap & obs or should it be disabled. Also my win10 is 1903 is there anything I need to do concerning this? thanks
 

Narcogen

Active Member
I take it from your email you figured this out, but:

Audio from a capture device that comes into OBS isn't audible anywhere unless you turn on monitoring. You need to turn on monitoring for each source you need to listen to in Edit > Advanced Audio Properties, and then you need to pick one Windows audio device to use to listen to those monitored devices in Settings > Audio > Advanced > Monitoring Device.

A lot of users are either 1) using external capture hardware or cameras, or 2) capturing audio and video from a local application like a game. Not everyone is doing both, but if you are, you need to be careful what you set your Monitoring Device to, because if that is your system default audio, and you're capturing that, because you're capturing a local application, you will get an echo.

If you end up needing more precise control over Windows audio routing, but don't want to use a full-blown DAW, a good choice is Voicemeeter, which is free, and there are guides for using it with OBS:


If you don't need do VO, then you don't need a microphone, just disable it. If the UTAP video capture is set to "capture only" and the only audio you need is the embedded audio in your SDI feed, then you can leave all other audio devices in Settings > Audio disabled.

OBS works fine with Win10 as long as you're at least at patch level 1803.
 
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