Question / Help Drivers for Scarlett 18i20 in OBS

Ronald Cz

Ronald Cz

Member
I have a Red Scarlett 18i20 capture device and found ASIO drivers to recognize the input hardware but it does not see the outputs. I have a camera SDI in the capture card and I want to get an audio out for the host to listen to that and other cameras.

Are there ASIO output drivers?
 
if your question is about drivers, it's not the right place. You need to check with the manufacturer of your hardware.
If you want to monitor sound in obs, you use the monitoring function available for audio sources (right click in the audio mixer > Advanced Audio Properties).
If your question is about capturing outputs of your scarlett soundcard, it depends on its drivers from focusrite and how they expose the outputs in their wdm driver.
 
The third one however Focusrite says they are not responsible for how OBS handles their outputs. I want to be able to direct various camera audio incoming from SDI coming in. Make up a scene and and output to one of the Scarlett outputs 1-10. I can select the incoming Microphone but I cannot redirect it to one of the outputs on the Scarlett 18i20.

OBS only recognizes two channels of output.
 
I have an 8 in 8 out soundcard; obs can capture all inputs and outputs through the WDM drivers (wasapi). So I dont really understand why your Focusrite couldn't be. Post a screen capture of the drop down when you try to create an Audio Output Capture so that I can see the list of devices exposed by windows wasapi. Also screen capture: the Settings > audio > output drop down of windows 10 (click on windows bottom left > Settings etc).
 
I don't have wasapi installed I have github installed which just shows inputs.
OBS ASIO Drivers inputs only.jpg
github.com

GitHub - Andersama/obs-asio: ASIO plugin for OBS-Studio

ASIO plugin for OBS-Studio. Contribute to Andersama/obs-asio development by creating an account on GitHub.
github.com github.com
 
oh you're using our asio plugin. No it can capture only inputs not outputs ! this is a limitation of asio sdk. Some devices allow it though by bypassing asio sdk limitations.
In your case, just use Audio Output Capture. It should work. It uses the wasapi drivers which were automatically installed when you installed the focusrite drivers.
 
and in windows audio settings ? if you see 10 outputs, then indeed something is wrong with obs.
If you don't, it's just that the wasapi drivers are crippled
 
yes, I only see focusrite as one output device not the 10 outputs, in my sound settings. Is this something that focusrite support can help me with?
 
it's a problem with focusrite drivers then: they didn't implement separate outputs for the wdm (wasapi) drivers. Many manufacturers do the same and only implement them for asio. The stereo output on windows is usually a mix of all pairs of outputs (12 + 34 + 56 + 78 + 9 10 )
I doubt they implement that for the windows drivers; too much work while professionals use either asio or coreaudio on mac ...
You can ask for it as a feature but you'll end up waiting a very long time
 
Update: Focusrite support says they are passing it up to the UK driver support team to see if they want to fix this. I told them many more people are looking to stream and OBS is free. They can sell more units if they get their drivers to work with OBS.
 
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