Do you want to spend all your time managing your email server? 'Cause this is how you get to that point.

Running Jellyfin on a 5th gen i5 that I’ve had sitting in a closet for years doing nothing.

Running Ubuntu with 16 gb of ram. Transcodes single streams just fine. Most of my files are MP4 anyway. I run everything at 1080.

I ran for a bit on a Raspberry Pi 4. That seemed a bit strained, but OK.

I didn’t like the reliability of the Pi.