How to build MIDI file visualizer to get input from MIDI file and display MIDI timeline over the keyboard to match notes played by a real player

问题

re: How to build MIDI file visualizer to get input from MIDI file and display MIDI timeline over the keyboard via DLP projector to match notes played by a real player

Brendan Kavanagh is using such tool to build videos lighting up his woogie boogie played on piano

https://www.youtube.com/watch?v=E3FTpv_R3EA

Lighting Up Boogie Woogie and Blues Piano (Dr K)

or

https://www.youtube.com/watch?v=E3FTpv_R3EA&list=RDE3FTpv_R3EA&start_radio=1

https://www.bing.com/images/search?q=midi+file+visualization&form=HDRSC2&first=1&scenario=ImageBasicHover&cw=1117&ch=622

His tool looks to be new since employed quite recently, during the coronavirus time.

I have contacted him but he is away on holiday to respond promptly.

I need such tool to be integrated with musical notes scanner, to support handicapped piano player

来源：https://stackoverflow.com/questions/62683207/how-to-build-midi-file-visualizer-to-get-input-from-midi-file-and-display-midi-t