Ik heb even op de website van Emby gekeken, en ik kwam het volgende tegen:
Emby Server has basic support for videos stored in ISO format. This includes the ability to catalog the ISO's within Emby Server, and play them in HTPC-based apps such as Emby for Kodi and Emby for Windows Media Center. Other apps will generally only be able to play them with the use of an external player.
https://support.emby.media/support/solutions/articles/44001159102-movie-naming