You'll need the following dependencies:
- cmake
- intltool
- libclutter-gst-3.0-dev
- libclutter-gtk-1.0-dev
- libgranite-dev
- libgstreamer-plugins-base1.0-dev
- libgstreamer1.0-dev
- valac
It's recommended to create a clean build environment
mkdir build
cd build/
Run cmake to configure the build environment and then make to build
cmake -DCMAKE_INSTALL_PREFIX=/usr ..
make
To install, use make install, then execute with io.elementary.videos
sudo make install
io.elementary.videos