Note that much of the data in the Groups Register is incomplete for the fields described here.
Mappings to ST 377-1 values
All mappings between MXF “Required” status values and the relevant Groups Register Contents fields values:
| MXF “Required” Status: Abbreviations | IsOptional |
IsIgnorable |
IsDistinguished |
Value |
|---|---|---|---|---|
| Req | F | F or [NOT PRESENT] | [NOT PRESENT] | [NOT PRESENT] |
| E/req | F | T | [NOT PRESENT] | [NOT PRESENT] |
| B.Effort | F | T | T | Distinguished Value |
| D/req | T | F | [NOT PRESENT] | [NOT PRESENT] |
| D/req | T | F | F | Default Value |
| Opt | T | T or [NOT PRESENT] | [NOT PRESENT] | [NOT PRESENT] |
| Opt | T | T or [NOT PRESENT] | F | Default Value |
Mapping table notes:
IsOptionalis both “MXF Encoder” and “SMPTE ST 395 status” in ST 377-1 Table 3IsIgnorableis “MXF Decoder” in 377-1 Table 3
Other allowed combinations
Other combinations of Groups Register field values are permitted (they just cannot be mapped to MXF “Required” status values and may not actually make a lot of sense) as long as the following restrictions are satisfied:
IsOptionalis present- Either:
IsDistinguishedis not present andValueis not presentIsDistinguishedis present andValueis present