This was my exact experience as well. I’ll never know how Plex compares to Jellyfin because I immediately noped out when I ran into the account creation.
Frankly baffling to me that anyone with the wherewithal to self host thought that was okay.
My most common use for Google assistant was an extremely simple command. “Ok Google, set a timer for ten minutes.” I used this frequently and flawlessly for a long time.
Much like in your situation it just stopped working at some point. Either asking for more info it doesn’t need, or reporting success while not actually doing it. I just gave up trying and haven’t used any voice assistant in a couple of years now.
Don’t most pdf viewers have an export to image option?
Do you actually have files with an .avc extension? AVC is a codec that can be used in many different container formats, including MP4. Where did these files come from?
I actually agree that most audio conversion tools are needlessly awkward. Audacity will convert these just fine, though doesn’t really do bulk conversion. Foobar2000 will do it in bulk if you’re on windows.