The descriptor formatEncoding identifies how the actual information in a media item is compressed, interpreted, or formulated using a particular scheme. Identifying the encoding used is beneficial for a number of reasons, including as a way to achieve reversible compression; for the construction of document indices to facilitate searching and access; or for efficient distribution of the information across data networks with differing bandwidths or pipeline capacities.
Use free-form text entry to identify the specific encoding and parameters for the media item. PBCore decided that a comprehensive picklist of terms or values from which to pick encoding schemes would have been overwhelming and probably frozen in time as new schemes emerge monthly. Instead, enter what you know you are using to encode your media item.
Apply once within its container, pbcoreInstantiation (which itself can be applied multiple times for each rendition of a media item)
Real Media 9
Windows Media 9