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make root
build gst raspivid
apt install git autoconf automake libtool pkg-config libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libraspberrypi-dev gstreamer-tools gstreamer1.0-omx cd /home/pi git clone https://github.com/thaytan/gst-rpicamsrc.git cd gst-rpicamsrc autoreconf -i autoconf ./configure make -j4 sudo make install
build gst srt
build lib srt
apt install cmake-data libjsoncpp1 librhash0 libuv1 tcl8.6 tclsh git clone https://github.com/Haivision/srt.git cd srt git checkout tags/v1.4.1 ./configure make -j4 sudo make install
build gst srt (build gst bad with srt support)
enable src packages in /etc/apt/sources.list sudo apt build-dep gstreamer1.0-plugins-bad git clone https://github.com/GStreamer/gst-plugins-bad.git git checkout -b 1.14.5 1.14.5 meson build ninja -C build sudo cp build/ext/srt/libgstsrt.so /usr/lib/arm-linux-gnueabihf/gstreamer-1.0/
build gst-instruments
sudo apt install valac meson ninjac git clone https://github.com/kirushyk/gst-instruments.git cd gst-insturments meson build ninja -C build sudo ninja -C build install
ffmpeg
make sure du build libs not part of raspbian according to the gist above or remove them from configure.
./configure --extra-ldflags="-latomic" --extra-cflags="-I/usr/local/include" --extra-ldflags="-L/usr/local/lib" --extra-libs="-lpthread -lm" --arch=armhf --enable-gmp --enable-gpl --enable-libass --enable-libdav1d --enable-libdrm --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libssh --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-mmal --enable-nonfree --enable-omx --enable-omx-rpi --enable-version3 --target-os=linux --enable-pthreads --enable-openssl --enable-hardcoded-tables --enable-libsrt --enable-libv4l2