Plus what's the point in keeping ISO on the disk if I can have a convenient mkv/whatever with everything what's on it, _and_ everything recognises it, and it takes 1/20 - 1/4 space anyway?
1. easy enough to store it remuxed as an mkv (this tool first converts it to a remuxed mkv via makemkv) to get that convenience.
2. "easy enough" (this is a bit hyperbole, but i've done it) to take an iso and expose the playlists one wants as individual .m2ts files, and then everything recognizes it the same as mkv
did this using a fuse fs. drop all isos in a dir with a metadata file to list the playlists one wants exposed with how one wants them named, and the fuse fs turns each iso into a virtual directory populated by files named <name>.m2ts that corresponds to the playlist you wanted for it (work for seamless branching as well).
3. if saving space is so important to you, yes, none of this will apply, I still think the energy costs need to be factored in, to understand how much money one is saving / spending to accomplish that space savings. If one is going to be storing a digital iso backup of the discs they purchase (or borrow), what I listed in #2 is the best overall.
2. "easy enough" (this is a bit hyperbole, but i've done it) to take an iso and expose the playlists one wants as individual .m2ts files, and then everything recognizes it the same as mkv
did this using a fuse fs. drop all isos in a dir with a metadata file to list the playlists one wants exposed with how one wants them named, and the fuse fs turns each iso into a virtual directory populated by files named <name>.m2ts that corresponds to the playlist you wanted for it (work for seamless branching as well).
3. if saving space is so important to you, yes, none of this will apply, I still think the energy costs need to be factored in, to understand how much money one is saving / spending to accomplish that space savings. If one is going to be storing a digital iso backup of the discs they purchase (or borrow), what I listed in #2 is the best overall.