UMID Functions

8-1 Overview of UMID Functions

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.

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.

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

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)

Chapter 8

8-2 Recording UMIDs

UMIDs can be recorded when recording video signals with this unit. You can select whether to inherit (copy) the UMID contained in input signals automatically or forcibly generate a new UMID.

Selecting the type of UMID to record

Select whether to record Basic UMID or Extended UMID, using setup menu item 655.

For details on setup menu item 655, see page 73

Selecting whether to inherit or generate

UMID

When recording UMID, you can select whether to inherit (copy) UMID contained in input signals, or generate new UMID. Make this selection by using setup menu item 656.

For details on setup menu item 656, see page 73

Selecting the Instance Number generation method when inheriting UMID

almost all of the information in the UMID is copied

Chapter

If you choose to inherit UMID contained in input signals,

 

without change, but the Instance Number changes to a

8

UMID

value that indicates that “this UMID is a copy.” The new

 

value can be generated from a 16-bit pseudo-random

Functions

number with the addition of the number of copies (1 byte),

 

or it can be generated from a 24-bit pseudorandom

 

number. Select the method used to generate the Instance

 

Number by using setup menu item 654.

 

For details on setup menu item 654, see page 72.

 

Selecting the SDI VANC line to insert UMID

You can select the VANC (Vertical ancillary) line into which the generated UMID should be inserted. Make this selection by using setup menu item 653.

Overview of UMID Functions / Recording UMIDs 55