Ubuntu record instant replays with Replay Sorcery
Install Replay sorcery to record instant replays. It is very easy
install dependencies
sudo apt install install cmake ffmpeg libx11-xcb-dev libavutil-dev libavformat-dev libavdevice-dev libavcodec-dev libavfilter-dev libdrm-dev libpulse-dev build-essentials
GitHub URL https://github.com/matanui159/ReplaySorcery
Building
$ git submodule update –init
$ cmake -B bin -DCMAKE_BUILD_TYPE=Release
$ make -C bin
$ sudo make -C bin install