SMPTE Labels Register (Revision of RP 224v11:2011). The SMPTE labels register defined by this practice covers the use of SMPTE universal labels as individual items where the meaning of each label is conveyed by the content of the universal label alone. A full definition is given in SMPTE ST 400. The labels register structure defined in SMPTE ST 400 covers the use of SMPTE universal labels for identification all types of essence (video, audio, and data in their various forms) and metadata. The standard specifies that any application must conform both to: (a) the definitions and formats in SMPTE ST 400; and(b) this SMPTE labels register practice. The standard and this practice shall be used together as a pair; neither may be used in isolation. This practice contains a representation of the SMPTE labels register contents in the form of an excel spreadsheet. Other representations may be made available as defined by SMPTE ST 400.