Many Sony UHD BD discs have test patterns.
If I make an MKV of test patterns, I don’t know what to name the file or it’s folder so that it shows up in my infuse library.
Maybe I have to make my own metadata ? … I have put test patterns in a folder called test patterns on my NAS but I haven’t seen it found by infuse.
Edit - I may “fake it” by using Video Essentials (1996) which is in IMDB