Metadata definitions (e.g. for the DM Frameworks) are included as SMPTE Metadata Registers XML files. This fact and its consequences should be explained in the Specs. In particular, it should be noted that Groups ULs are shown with Byte 6 as 0x7F (as is the case in the SMTPE Groups Registers) but that this is a wildcard value which is to be replaced in implementations (normally with 0x53).
Metadata definitions (e.g. for the DM Frameworks) are included as SMPTE Metadata Registers XML files. This fact and its consequences should be explained in the Specs. In particular, it should be noted that Groups ULs are shown with Byte 6 as 0x7F (as is the case in the SMTPE Groups Registers) but that this is a wildcard value which is to be replaced in implementations (normally with 0x53).