green screen with OBS on Fedora
We have to compile stuff so
sudo dnf group install -y "Development Tools"
sudo dnf install -y kernel-devel kernel-headers dkms v4l-utils
install the v4l2loopback module with dkms
git clone https://github.com/umlaeute/v4l2loopback.git
cd v4l2loopback
export V4L2LOOPBACK_VERSION=`./currentversion.sh`
sudo mkdir /usr/src/v4l2loopback-$V4L2LOOPBACK_VERSION
sudo cp -av * /usr/src/v4l2loopback-$V4L2LOOPBACK_VERSION
sudo dkms install v4l2loopback/$V4L2LOOPBACK_VERSION
set v4l2loopback options
sudo bash -c 'cat << EOF > /etc/modprobe.d/v4l2loopback.conf
options v4l2loopback exclusive_caps=1
EOF'
set v4l2loopback to autoload on boot
sudo bash -c 'cat << EOF > /etc/modules-load.d/v4l2loopback.conf
v4l2loopback
EOF'
load v4l2loopback
sudo modprobe v4l2loopback
check to see if the video device was created
v4l2-ctl --list-devices
You shoud see a "Dummy" video device similar to this
Dummy video device (0x0000) (platform:v4l2loopback-000):
/dev/video0
Enable RPMfusion if you haven't already
sudo dnf install https://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm https://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm
Install Obs and development libraries
sudo dnf install qt5-qtbase-devel obs-studio obs-studio-devel
Clone the obs-v4l2sink repo
git clone https://github.com/CatxFish/obs-v4l2sink.git
Change directory
cd obs-v4l2sink
Create a patch file
cat << EOF > ./patch.diff
diff --git a/external/FindLibObs.cmake b/external/FindLibObs.cmake
index ab0a3de..7758ee3 100644
--- a/external/FindLibObs.cmake
+++ b/external/FindLibObs.cmake
@@ -95,7 +95,7 @@ if(LIBOBS_FOUND)
set(LIBOBS_INCLUDE_DIRS ${LIBOBS_INCLUDE_DIR} ${W32_PTHREADS_INCLUDE_DIR})
set(LIBOBS_LIBRARIES ${LIBOBS_LIB} ${W32_PTHREADS_LIB})
- include(${LIBOBS_INCLUDE_DIR}/../cmake/external/ObsPluginHelpers.cmake)
+ include(/usr/lib64/cmake/LibObs/ObsPluginHelpers.cmake)
# allows external plugins to easily use/share common dependencies that are often included with libobs (such as FFmpeg)
if(NOT DEFINED INCLUDED_LIBOBS_CMAKE_MODULES)
EOF
Patch it
git apply patch.diff
Build it
mkdir build && cd build
cmake -DLIBOBS_INCLUDE_DIR="/usr/include/obs" -DCMAKE_INSTALL_PREFIX=/usr ..
make -j4
Install it
sudo make install
Move the plugin to the correct directory for Fedora
sudo mv /usr/lib/obs-plugins/v4l2sink.so /usr/lib64/obs-plugins/v4l2sink.so
Thanks to Tom Callaway for the help with obs-v4l2sink! -> https://spot.livejournal.com/327990.html
Now use Obs to create lulz
- Thumb tack a green sheet on the wall behind you or whatever type of green screen you want to use
- In the Obs Sources menu click the + button and select Video Capture Device (V4L2).
- Give the video device a name and click OK
- On the next window select the device you want to use to capture your face and tweak any settings
- Now right click on the newly created video device in the Sources box and select Filters
- Click the + button in the Effect Filters box and select Chroma Key and give it a name
- Adjust the Similarity slider to get the desired effect and click close
- Click the + button in the sources to add any photos, videos or windows you want to preset behind you
- When you're happy with your scene select "Tools->V4L2 Video Output" from the top menu
- Run
v4l2-ctl --list-devicesin a terminal to get the device name of the Dumy Video Device and enter it in the output window and press start - Now simply select the Dummy Video Device in whatever video conferencing software you're using
- Impress your coworkers and friends with how clever and witty you are