⚠ Unofficial support

You should really be using the built-in OBS Virtual Camera over this plugin. This is used as a stop-gap for things that don't yet work with the built-in Virtual Camera (like multi-camera support, ~~https://github.com/obsproject/obs-studio/issues/3635 and https://github.com/opencv/opencv/issues/19746~~). I do not plan on supporting this fork outside of necessary updates if OBS breaks the plugin. And only plan on doing so until the aforementionned OpenCV issue is fixed.

OBS-VirtualCam

obs-virutalcam is a plugin for obs-studio , transforming the output video to a virtual directshow device.

Supported Platforms : Windows 10+

Supported OBS Studio version : 28.0.0+

Features

• virtual output : A output plugin sink raw video & audio to directshow interface.
• virtual filter output : A filter plugin sink obs source video to directshow interface.
• virtual source : Four directshow Interfaces which can use in 3rd party software.

Install

The installer and compressed file can be found in Release Page. Using installer is recommended, but if you want to use compressed file to install manually , please follow these instructions.

1. Unzip OBS-VirtualCam.zip and put it to your obs-studio install folder.
2. Run CMD as Administrator and register 64bit directshow source

regsvr32 "C:\Program Files\obs-studio\bin\64bit\obs-virtualsource.dll"

• If you want to Remove the directshow filter , you can also use regsvr32 to do this

regsvr32 /u "C:\Program Files\obs-studio\bin\64bit\obs-virtualsource.dll"

Register specific number of virtual cameras

Unregister then register 2 directshow camera (up to 4)

regsvr32 /u "C:\Program Files\obs-studio\bin\64bit\obs-virtualsource.dll" 
regsvr32 /n /i:"2" "C:\Program Files\obs-studio\bin\64bit\obs-virtualsource.dll"

Build

You first need to install cmake, Visual Studio, and build OBS project.
You must also download windows-deps-2023-04-12-x64 and windows-deps-qt6-2023-04-12-x64 from OBS Deps, then extract the zip as a folder of the same name and place them in <project_root>/obs-deps/

• QTDIR (path): QT folder
• DepsPath (path): FFmpeg folder in OBS dependencies package
• LIBOBS_INCLUDE_DIR (path) : Libobs include folder
• LIBOBS_LIB (filepath) : obs.lib path
• OBS_FRONTEND_LIB (filepath): obs-frontend-api.lib path
• PTHREAD_LIB (filepath): w32-pthread.lib path

ie:

cmake -S . -B build64 `
  -DQTDIR=<...>/obs-deps/windows-deps-qt6-2023-04-12-x64 `
  -DDepsPath=<...>/obs-deps/windows-deps-2023-04-12-x64 `
  -DLIBOBS_INCLUDE_DIR=<...>/obs-studio/libobs `
  -DLIBOBS_LIB=<...>/obs-studio/build64/libobs/RelWithDebInfo/obs.lib `
  -DOBS_FRONTEND_LIB=<...>/obs-studio/build64/UI/obs-frontend-api/RelWithDebInfo/obs-frontend-api.lib `
  -DPTHREAD_LIB=<...>/obs-studio/build64/deps/w32-pthreads/RelWithDebInfo/w32-pthreads.lib

Run msbuild: msbuild /m /p:Configuration=RelWithDebInfo ./build64/obs-virtualcam.sln

Donate

If you like this plugin, you can donate to the original author (Fenrirthviti) via Paypal.me