HDR works perfectly in Emby, even tone mapping when transcoding (it was added in a recent-ish update). You'll want a server that can hardware transcode if you're not direct playing 4k HDR though.
I've had strangeness with Dolby Atmos. Seems to depend on the client mostly. Jellyfin on Roku has been great, jellyfin on Kodi and Android have been mixed.
It's not perfect but Emby is a fine alternative. Jellyfin has its frustrations but it's FOSS and doesn't push this faggotry.
Can't really speak to either. I'd expect Emby to support HDR but I've never tested that.
HDR works perfectly in Emby, even tone mapping when transcoding (it was added in a recent-ish update). You'll want a server that can hardware transcode if you're not direct playing 4k HDR though.
I've had strangeness with Dolby Atmos. Seems to depend on the client mostly. Jellyfin on Roku has been great, jellyfin on Kodi and Android have been mixed.