SMPTE RP 189-1996

This practice describes a method (TAR) by which DPX files are organized on tape storage devices (and any other type of sequential block-oriented device).
This practice describes the tape file format basic concept, physical and logical layout, the directory file format, file naming conventions, and examples of usage.
This practice describes a recommended method for tape labels that are attached to the tape shell or reel.
This practice is intended for interchange only. It has not been optimized for other uses.