Wondering of there's a way to add video to YARG official setlist songs.

After being spoiled by God Only Knows being (to my knowledge) the only YARG official setlist song with a video background I was wondering if there was a way to add background videos to other Official Setlist songs.

I found the chart files for the setlist but now I'm stuck since i wasn't able to read them with any chart editor I have (Onyx and Moonscraper) so I would appreciate any help i could get :>