How to Share OBS Video and Audio in a Video Call
You can share an OBS scene in a calling app that supports window or screen sharing. Send a projector view for the picture and select a separate audio route when the app does not capture the intended OBS sound automatically.
This is different from selecting OBS Virtual Camera as a webcam. Check what your calling app and service permit before setting it up.
Share a projector view
- 1.Prepare the scene you want the other person to see.
- 2.Right-click that scene and open a Windowed Projector. For a suitable second monitor, you can use a fullscreen projector instead.
- 3.In the calling app, open its window or screen-sharing control.
- 4.Select the projector window or the intended second display.
- 5.Check the receiving view before sharing private content.
A projector tied to one scene shows that scene, even if you later select another OBS scene. Choose the output you intend to share. Do not select the whole desktop merely because it is the first sharing option.
Use your ordinary microphone when that is enough
If the other person only needs your voice, choose your physical microphone in the call app. You may not need a virtual audio device.
If they need an OBS mix containing your microphone and other sources, a supported virtual audio cable can carry that mix between applications.
Route an OBS mix through a virtual cable
Install a compatible cable from its developer and follow its setup requirements. Keep this route separate from any cable already used to capture incoming computer sound.
For VB-CABLE on Windows, the two endpoints have different names:
- OBS sends monitored sound to CABLE Input.
- The receiving app takes that sound from CABLE Output as its microphone/input device.
Open Settings → Audio in OBS and choose the cable's playback/input endpoint as the Monitoring Device. In Advanced Audio Properties, set the intended sources to Monitor and Output if they should go both to that route and the normal OBS output.
Use Monitor Only (mute output) only when you want the source on the monitoring route but not the normal stream/recording output. Endpoint names differ across drivers and operating systems; check the cable's own documentation.
Prevent an audio loop
Do not send the other person's returned call audio back into the cable feeding their call. Use headphones and isolate the sources that should go out.
Test voice and media separately, then together. Confirm that the caller can hear the intended sounds without an echo or repeated audio.
Check the final receiving result
A moving OBS meter is not proof that the call app selected the correct input. Inspect its microphone setting and ask for a short receiving-side check before a full session.
If the picture works but sound does not, troubleshoot the audio route rather than replacing the video-sharing setup.