Jellyfin:

• Free
• Gets the job done
• Not in financial trouble
• No layoffs
• Not trying to sell you stuff
• Not selling your watch habbits
• Mainly develops features people want

Plex (paid):

• Decade of development with pretty solid pay features
• Easy sharing with friends and remote watching
• Decent clients for almost every device and more solid transcoding
• Fairly quick fixes for problems
• Great intro/credit/commercial skipping
• Only develops features that might make money
• In the middle of layoffs
• Centralized authentication makes is impossible to watch if offline or they're offline unless you removed local authentication before it went offline.
• They sell your viewing habbits

Plex is super convenient and slimy

Jellyfin is pure and behind on features, clients and comforts.

Jellyfin is only getting better while Plex is primarily getting worse. You also need to pay for Plex to get many features Jellyfin provides for free.

one main question should also be, do you want to selfhost or not.

because plex is not selfhosted imo due to their login servers.

I switched from Plex to Jellyfin several years ago and haven't really looked back. Overall I just didn't like the direction plex kept going (pushing shit streaming services, central auth, paywalling features), and dropped it even though I grabbed a lifetime plex pass back in the day. The only thing I miss about plex was the ease of developing a custom plugin for it since you could pretty much just drop python scripts in there and have it work, though their documentation for plugin development was terrible (and I think removed from their site entirely).

Plex has a few more features with plex pass.

However I switched to jellyfin a few years ago because I found everything to be too limiting and dependent on them. Including the necessity to pay for codecs / playback on some of their mobile apps.

Jellyfin is a lot less polished, but it works well and you're in control of everything.

I would recommend trying out jellyfin first. If you encounter some deal breaking issue or aren't happy with it, check our plex.

The antenna and music support is better on Plex imo, but I think both require to pay for premium

The FOSS crowd will eventually pop in and try sway you strongly the other way, but at the end of the day, it really boils down to bigger platform, more app choices and more supported platforms. If you expect anyone other than yourself to be using it, on anywhere else other than your own equipments, but just don’t quite know who or where yet, then Plex might give you a better running chance in supporting that use case. Otherwise, choose whichever one floats your boat more.

I've used both for an extensive amount of time, and found Plex to be superior in basically every way. It's both nicer to use, and the library is a bit easier to manage. Not to mention all the back-end things you might want to use if you're heavy into video usage

Plex for sharing with others. Jellyfin for personal use only.

My experience with Jellyfin have not been great. The mobile app is just not working well enough

Plex has lots of customisation available (which I prefer) but is a little harder to get running in my experience. I'd say, install them both and see what you like most. Do start with Jellyfin as it's easy to install.

I have both. I never touch Jellyfin. Plex is just better experience in every way. If Jellyfin was as good as plex I would use that because I agree more with the philosophy.