176
Using UMID Data
A
Using UMID Data
To perform operations from interviewing to editing
effectively and to detect audio-visual materials easily
when reusing them, metadata that provides additional
information is recorded along with audio-visual data on a
disc.
As one of application of metadata, the UMID (Unique
Material Identifier) is internationally standardized.
What is a UMID?
The UMID (Unique Material Identifier) is a unique
identifier for audio-visual material defined by the
SMPTE330M-2003 standard.
The UMID may be used either as the 32-byte Basic UMID
or as the Extended UMID, which includes an additional 32
bytes of Source Pack to make a total 64 bytes.
For details, refer to SMPTE 330M.
Globally unique ID is automatically recorded every
shooting.
The Extended UMID is metadata that provides additional
information such as location, time/date, company and so
on.
The UMID is applied as follows.
Using the Extended UMID
You have to enter a country code, organization code and
user code. Set the country code referring to the ISO 3166
table, and set the organization code and user code
independently.
For details, see “Additional information related to the
UMID” on page 177.
Functions of UMID data
The UMID data enables the following:
Spatial
Coordinates
Extended UMID (64 bytes)
Basic UMID (32 bytes)
Source Pack (32 bytes)
Universal label
L
Instance
No.
Material Number
Time/Date
User
Country
Org
12 bytes
1
3 bytes
16 bytes
8 bytes
12 bytes
4 bytes
4 bytes
4 bytes
Instance No.
Material No.
ID generated when
shooting
Same as the above
Source Pack
Shooting
information (when,
where and who)
Same as the above
Distinguishing between
the original material and
copied material
Original material: 00 00 00
Copied material: Generation number (1 byte)
+ random number (2 bytes)
Material source ID/
detecting material
Metadata pack that
identifies the source of
material unit by defining
the when, where and who
of the material unit with
which it is associated.