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RE4 Format Specification (BDXL™)

This version was defined in June 2010 and is a multi-layered rewritable in BDAV with the speed of 2X and 4X, capable of 100GB and usage of UDF2.5 as file system  and Professional Device is a newly added as one of BD product categories.

Current Format Books

System Description Blu-ray Disc Rewritable Part 1: Basic Format Specifications Ver.3.10 Nobember 2017 System Description Blu-ray Disc Rewritable Part 2: File System Specifications Ver.3.0 June, 2010 System Description Blu-ray Disc Rewritable Part 3: Audio Visual Basic Specifications Ver.4.1 December 2016 together with System Description Blu-ray Disc Rewritable Format Part 3: Audio Visual Basic Specifications Ver.2.2 December 2016