I use Kodi on an Nvidia Shield TV Pro instead of Plex so I don't have to transcode. My NAS is an 8-bay Synology DS unit on a rack shelf, it has bigger fans than an RS unit so it's quieter.

The analog video on laserdiscs is encoded as PWM which is on-off like digital, not analog grooves like a phonograph record.

Or $6,495 for up to 16mm: https://www.moviestuff.tv/retroscan_816_2k_scanner.html

If you want to DIY: https://moviestuff.tv/

My problem: what if there is a selfie of my sister at her marriage with my grandma. I want to easily find this picture by searching "My sister Marriage" and by searching "Grandma"

If you remember the year then you can quickly go to that folder just using Windows Explorer, then find the "Marriage" subfolder.