interesting. I did not know that.
Is there any real difference (quality wise) between an mkv file vs an iso file?
Does mkv keep all the menus, etc because that's what I use my oppo 93 for, to play iso's
No difference in video or audio quality. It just places the media streams in an MKV container.
No menus but it retains chapter markings. You can then split the MKV at the chapter markings into individual MKV files and play them in sequence or at random. Some software will allow creation of playlists that would then allow you to play the files (songs) in any order including mixing songs from different discs (concerts).
I use Kodi with an iPad remote app and when I have friends over I like to pass the iPad around to allow them to select a song from my concerts to play. A bit of fun allowing everyone to add a song to the playlist.
The great thing with using the iPad app is that you can navigate around all the concerts (and audio albums) without interfering the current main video display (TV or projector) while current songs are playing. You can even change the playlist order or remove or insert a new song as next to play.