There's no executable, so make sure you have Node.js installed. This as only been tested on Linux, but it should work on Windows and OSX.
git clone https://github.com/dudasaus/video-audio-downloader.gitcd video-audio-downloader/make installmakeornode main.jsto run
git clone https://github.com/dudasaus/video-audio-downloader.git- Install https://libav.org/ or https://www.ffmpeg.org/
- In the video-audio-downloader directory,
makeornode main.jsto run.