Data about data. In the media world it is data about the video and audio but it is not about the actual video or audio themselves. This is important for labeling and finding data – either in a ‘live’ data stream or an archive. Within studios and in transmission, digital technology allows information to be added. Some believe metadata will revolutionize every aspect of production and distribution. Metadata existed long before digital networks; video timecode and film frame numbers are but two examples. Today the metadata can also include the detail about the editing, color correction and effects work. Such history information allows a more open choice of equipment and the ability to retrace the detail of post production – should any changes be required.