I still recoil at the thought of being told "no, that's a container, not a codec!"
TBH, I'm still surprised at how awful some video stuff is. I've actually had about 5 false starts trying to make Plex work, and I'm trying it again (yeah, I never learn). Now the codecs and transcoding and stuff works on modern hardware, but it simply refuses to index content that you don't rename to please the master. It's absolutely insane. Software designed to make your life harder, not easier. There's a reason I just point Kodi to a NAS share. (speaking of awful configs.... but at least it plays!)