11 DMS-1 Metadata Scheme Jim Wilkinson Introduction The MXF specification provides the mechanism by which a descriptive metadata (DM) framework can be plugged into the structural metadata part of the header metadata. These DM frameworks are a part of the header metadata and provide additional editorial value to an MXF file. The DMS-1 specification is defined in SMPTE 380M. Further information on using descriptive metadata in MXF is given in engineering guideline document SMPTE EG42. A Short History of DMS-1