This release contains decrypted MGVC (Master Grade Video Coding) enhancement layer under the KDM folder. Each ISO can be played back by Panasonic devices even in decrypted form, or compatible playback tools can decode a 12-bit 4:2:0 output. MGVC: http://www.avsforum.com/t/1486405/36-bit-mgvc-blu-ray-only-in-japan Due to how files are stored, an ISO is required to keep the virtual sector mapping on the .extif MVC stream without blowing up the size. See /KDM/EDL.bin (XML text file) for a description of the virtual mapping. Playback programs can use an H.264 MVC decoder and merge the planes according to Patent US9392246B2 or Patent JP5914888B2 to get 12-bit 4:2:0 output.