trickplay scan take so long ?

[TheDreadPirate]

I gave mine 4 threads, IIRC the default is 1 or 2 threads? You can give it more to speed things up, but what you're describing is not outside of the norm.

For me it was 1.5 days on an i3 12100. I don't know how big your library is, but it will take longer on a i5 7500.

Before I upgraded to my current 12100, I was using a low power Intel J4205. My library was much smaller back then and it took 3 days for Jellyscrub to finish generating the trickplay files.