This toolchain assists you in rendering the recording for the hackumenta.
$ sudo apt install ffmpeg sox audacity mpv libxi-dev mesa-common-dev
$ nvm use 8
$ npm install -g https://github.com/transitive-bullshit/ffmpeg-concat.git#feature/optimize-frames
The only documentation is currently this blog post: https://soerface.de/blog/2020/02/11/post-production-with-ffmpeg/