What does “BD5″ and “BD9″ mean?
BD5/BD9 are types of BluRay Rip.
From wikipedia: “BD9 and BD5 are lower capacity variants of the Blu-ray Disc that contain Blu-ray compatible video and audio streams contained on a conventional DVD optical disc. Such discs offer the use of the same advanced compression technologies while utilizing lower cost legacy media. BD9 utilizes a standard 8152MB DVD9 dual-layer disc while BD5 utilizes a standard 4489MB DVD5 single-layer disc.”
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Wikipedia: BluRay BD9 and BD5 Disc