8-1 Overview of UMID Functions

The UMID (Unique Material Identifier) is a type of meta-data in video and audio materials. It has been internationally standardized in SMPTE Standard 330M. This unit supports recording and generation of UMIDs.

The UMID is made up of a section called the “Basic” section and a section called the “Source Pack” section. The Basic section contains information such as the

device that recorded the material and whether the material is the original or a copy. The Source Pack section contains information about when/where/who recorded the material.

A UMID with a Basic section only is called a Basic UMID. A UMID with both Basic and Source Pack sections is called an Extended UMID. The following figure shows a general overview of the information contained in a UMID.

Functions UMID 8 Chapter

UMID

 

Basic

 

 

 

Instance Number

 

 

 

 

 

 

 

 

Copy or original

 

 

 

 

 

 

Material Number

 

 

 

 

 

 

 

 

 

 

 

Which device recorded the original

 

 

Source Pack

 

 

 

Date/Time

 

 

 

 

 

 

 

 

When was it recorded

 

 

 

 

 

 

Spatial Co-ordinates

 

 

 

 

 

 

 

 

 

 

 

Where was it recorded

 

 

 

 

 

 

Stored Ownership

 

 

 

 

 

 

 

 

 

 

 

 

Who recorded it

Functions UMID 8 Chapter

Chapter 8 UMID Functions 8-1