Since my recent upgrade to Win 10 Fall Creators Update the library maintenance for videos tends to hang or gets stuck midway.

stopping and restarting the background task within Mezzmo consistently reproduces the hang-up at (today) 60 video files checked. Last time the displayed file number at which it got stuck was 180. Restarting Mezzmo does not change the situation either.

I had random success with logging out of Windows and re-logging in. After that Mezzmo completed its video database maintenance properly (once). Two days later it got stuck again.

Logs have been produced and sent by email.