The player does have a large effect on both those things. A player that supports the codec will not need server hw accept and hdr conversion as it will direct stream. A big issues is these codecs can cost money. So if the player doesn’t come with it the player needs to pay for it, something plex may be doing for those that purchased their subscription.

Jellyseer is a jellyfin comparable alternative to ombi.

A glass may have a spec that allows it to be filled to the brim. Doesn’t mean it’s a good idea, especially when you want to run up stairs with it.

Your going to spill water everywhere.