The ISO contains the Multiview Video Coding (MVC) stream required for "Full 3D." This provides a separate high-definition image for each eye, avoiding the resolution loss found in "Side-by-Side" (SBS) or "Over-Under" (OU) rips.
Typically DTS-HD Master Audio 5.1, providing an immersive soundscape that matches the visual depth. Video Codec: MPEG-4 MVC (3D) and AVC (2D). Coraline.3D.2009.1080p.BluRay.ISO