Laserschwert said:
For the Blu-ray (and DVD, respectively) this is probably much more difficult, as I haven't seen a single fanmade disc that contained multi-angle. I'm only familiar with Adobe Encore for authoring discs and it STILL doesn't support multi-angle.
Doesn't have to be multi-angle for BD, you could do the elements as seperate clips and then seamlessly link them together in different playlists.
That's how the 2011 Blu-rays are done.