SMPTE ST 390:2011

This standard defines the specialized Operational Pattern "OP-Atom" or OP-Atom for the storage and exchange of an MXF file with a tightly defined structure for a single item of essence described by a single Essence Track. It defines the operating restrictions, Structural Metadata objects and individual attributes applied to the MXF file format specification to achieve interoperability when exchanging a single item of audio-visual material.

Operational Pattern "OP-Atom" is intended to satisfy the demands of applications where there is a requirement for exchange of material and associated metadata together in a single file with an open and standardized format, yet also a demand for a simple, predictable, layout with minimum scope for variation. OP-Atom is specifically intended for applications where each Essence Track is held separately. Operational Pattern "OP-Atom" provides for a subset of MXF features.