OMT VCam v1.0.0
Use any OMT source as a virtual camera and microphone in Zoom, Teams, Google Meet, and other video conferencing apps.
1 Install
Download and run the installer. It includes the .NET 8 Runtime and registers the virtual camera driver automatically.
Windows SmartScreen may show a warning on first launch. Click More info then Run anyway. This is normal for newly released software.
2 Open the Control Panel
Once OMT VCam is running, open your browser and go to:
http://localhost:8787
This is the web-based control panel for OMT VCam
3 Discover & Connect
Click Discover Sources to find OMT sources on your network. Then click a source to connect and start receiving its video and audio stream.
- Sources are discovered automatically via DNS-SD (no IP configuration needed)
- Video feeds into the virtual camera immediately on connection
- Audio plays through your speakers by default
4 Select Virtual Camera
In Zoom, Teams, Google Meet, or any video calling app:
- Open Settings → Video (or Camera settings)
- Select "OMT VCam" as your camera
- Your OMT source video now appears as your webcam feed
5 Set Up Virtual Microphone (Optional)
To route OMT audio into Zoom/Teams as your microphone input, you need VB-Audio Virtual Cable (free):
- Download and install VB-Audio Virtual Cable
- Restart OMT VCam — it auto-detects the "CABLE Input" device
- In Zoom/Teams, select "CABLE Output" as your microphone
- OMT audio now feeds directly into your video call as mic input
Tip: When using OMT VCam in a call, mute the speaker output in the control panel to avoid echo. Use the mute toggle in the web UI or call POST /api/speakers/toggle.
API Reference
OMT VCam exposes a REST API at http://localhost:8787 for programmatic control.
| Method | Endpoint | Description |
|---|
GET | /api/status | Connection status, resolution, bitrate, FPS |
GET | /api/sources | Discover available OMT sources |
POST | /api/connect | Connect to a source |
POST | /api/disconnect | Disconnect from current source |
POST | /api/speakers/toggle | Mute/unmute speaker output |
GET | /api/log | Event log (last 50 entries) |
Firewall
You may need to allow these through Windows Firewall:
| Port | Protocol | Direction | Purpose |
|---|
| 8787 | TCP | Inbound | Web control panel |
| 5353 | UDP | Inbound | DNS-SD discovery |
| 6400-6600 | TCP | Outbound | OMT stream reception |
Troubleshooting
- "OMT VCam" not in Zoom/Teams? Restart OMT VCam, then restart Zoom/Teams. The virtual camera requires Windows 11 for MFVirtualCamera registration.
- No sources found? Make sure your OMT source is on the same network/subnet. Check that UDP port 5353 (mDNS) is not blocked by your firewall.
- Video is black? Connect to a source first via the control panel. Make sure the source is actively sending.
- No audio in Zoom/Teams mic? Install VB-Audio Virtual Cable and select "CABLE Output" as your microphone.
- Audio echo during calls? Mute the speaker output in the control panel or via the API.
- Can't open control panel? Check Windows Firewall allows TCP 8787. Try http://127.0.0.1:8787 instead.
System Requirements
- Windows 10 or 11 (64-bit)
- .NET 8 Runtime (included in installer)
- Network access to OMT sources (same LAN)
- VB-Audio Virtual Cable (optional, for virtual mic)
Need Help?
Contact us at contact@sebiulabs.co.uk
Website: sebiulabs.co.uk