Sony PDWF75 User Manual (PDW-F75 Professional Disc Recorder Operating Manual f - Page 128
Using UMID Data, What is a UMID?
View all Sony PDWF75 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 128 highlights
Using UMID Data Metadata is additional information recorded on discs along with audio-visual data. It is used to bring greater efficiency to the flow of operations from material acquisition through editing, and to make it easier to find and reuse material. As one of application of metadata, the UMID has been internationally standardized. What is a UMID? A UMID (Unique Material Identifier) is a unique identifier for audio-visual material defined by the SMPTE 330M2003 standard. A UMID may be either as a 32-byte Basic UMID or an Extended UMID, which includes an additional 32 bytes of Source Pack to make a total 64 bytes. For details, refer to SMPTE 330M. Extended UMID (64 bytes) Basic UMID (32 bytes) Source Pack (32 bytes) Universal label L Instance Material Number Time/Date Spatial No. Coordinates Country Org User 12 bytes 1 3 bytes 16 bytes 8 bytes 12 bytes 4 bytes 4 bytes 4 bytes A globally unique ID is automatically recorded for every clip. The Extended UMID is metadata that provides additional information such as location, time/date, company ID and so on. The UMID is applied as follows. Instance No. Material No. ID generated when shooting Same as the above Original material: 00 00 00 Copied material: generation number (1 byte) + random number (2 bytes) Source Pack Shooting information (when, where and who) Same as the above Distinguish between the original material and copied material 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. Using the Extended UMID You have to enter a country code, organization code and user code. Set the country code referring to the table in ISO 3166, and set the organization code and user code according to the guidelines of your organization. For details, see "Setting UMID ownership information" (page 129). Functions of UMID data UMID data enables the following: • Addition of a globally unique ID to every clip of audio- visual material. The unique ID is used to detect the material source and to link it with the original source material. Appendix 128 Using UMID Data