Glossary

AAF - Advanced Authoring Format Essence KLV - Key Length Value MXF - Material Exchange Format Metadata Metadata Dictionary Metadata Register Mob - Metadata Object Schema SMPTE Wrapper XML - eXtensible Markup Language Synonym UL - Universal

Definitions: AAF - Advanced Authoring Format A file format that wraps essence and metadata together to encapsulate an entire media project with all information and content. www.amwa.tv back Essence The media used within a project, as distinct form the metadata. back KLV - Key Length Value A method of encoding metadata, the key tells you what the meaning of the value is, the length tells the length of the value and the value is the actual data. Diffuser is designed to manage the meanings of the keys and distribute the meanings to other users. back MXF - Material Exchange Format A file format designed to pass program streams and associated metadata. http://www.freemxf.org/ back Metadata Data about data. back Metadata Dictionary A repository of all the meanings of metadata keys. This is required so that the meaning of an individual piece of metadata is consistent. back Metadata Register Another name for Metadata Dictionary. The SMPTE Metadata Registry is at www.smpte-ra.org/mdd/ back Mob - Metadata Object A data structure that holds the metadata for a piece of program material and labels it with a unique identifier. back Schema The formal structure of data. Often used in referring to the structure of an XML document. back SMPTE - Society for Motion Picture and Television Engineers The internationally recognized standards-making body for this industry. www.smpte-ra.org back Wrapper A file format such as AAF that wraps up information from several sources into one file. back XML - eXtensible Markup Language A widely used standard from the World Wide Web Consortium (W3C) that facilitates the interchange of data between computer applications. XML documents are in plain text and therefore can be read by humans as well as computers, albeit sometimes with difficulty. back Synonym A link between two entries in the Metadata Dictionary that mean exactly or nearly the same. back UL - Universal Label A 16 byte number that is used in several ways. A particular subset of ULs is used as a key in KLV encoding. back If you don't find the answer to your question or have suggestions, please let us know!