I want a script or something that is like the om_midi.jsx (https://omino.com/pixelblog/2011/12/26/ae-hello-again-midi/) for After Effects, but instead for Kdenlive and other Linux FOSS video editors if possible. Here (https://redirect.invidious.io/watch?v=w7hR8ESf-vs) is a video of the om_midi.jsx script. I would try to make YTPMVs if something like this existed for Linux, because I think YTPMVs are cool.
MIDI support in Linux, the audacity page below also has links to other software with MIDI support:
https://wiki.audacityteam.org/wiki/Midi (https://wiki.audacityteam.org/wiki/Midi)
https://wiki.archlinux.org/title/MIDI (https://wiki.archlinux.org/title/MIDI)
There are several other mixers similar to Audacity in the AUR, and in the Universe repo there is sneedacity, I used it recently to edit an audio file by removing a section from the middle and rejoining it, very easy.
There is an online tool to turn MIDI to jsx for aftereffects:
https://www.reddit.com/r/vfx/comments/cx0991/we_made_a_tool_to_export_midi_notes_to/ (https://www.reddit.com/r/vfx/comments/cx0991/we_made_a_tool_to_export_midi_notes_to/)
https://www.youtube.com/watch?v=bLgxQlNejMM (https://www.youtube.com/watch?v=bLgxQlNejMM)
And you can apparently do something similar to aftereffects using blender instead:
https://www.youtube.com/watch?v=P4OdosHWeqo (https://www.youtube.com/watch?v=P4OdosHWeqo)
I have not done anything involving MIDI to be able to provide personal experience I should add ;D