Wait, are we talking about these settings:
Because they did seem to work for me, at least back when I was using 1.16. I’d be uploading several movies to the directory outside the jail and some of them would appear in the library before I’d finished my uploads. And I mean like 10-20 minutes after I’d uploaded them, not long enough for a regular interval scan to have run (mine’s set to every 6 hours).
