Gst-plugins-temp repository is to develop GStreamer plugins required for NVR projects.
It requires 0.54 or newer version of Meson to build.
Install meson
pip3 install --user meson
Setup indent tool
apt install indent
Then you need to set to make it possible to run gst-indent script in your environment. You can refer to the script in gstreamer repo.
cp gstreamer/tools/gst-indent ~/.local/bin
Configure
meson build
Build
ninja -C build
Install
ninja -C build install