I briefly used this about a year ago (but ended up not using it, so I'm
not interested in maintaining it).
But FYI, here's what I used to build it on bullseye. It's suppose to
builds against ffmpeg, but the ffmpeg API has moved on since the last
Stepmania release in 2018. I ended up just disabling ffmpeg.
Build-deps:
cmake libgtk2.0-dev libjpeg-dev libmad0-dev libvorbis-dev nasm
libudev-dev
libbz2-dev libva-dev libglew-dev libpulse-dev libjack-dev
libasound2-dev
libavcodec-dev libavformat-dev libswscale-dev
cd Build && cmake -D WITH_FFMPEG=OFF .. && make -j4 && make install