Grass Valley K2 System Guide v.9.0 - Manual (Page 232)

File transfer AFD priority
AFD from the MXF or GXF metadata is copied to the K2 clip properties. 1
If the MXF stream contains an ancillary data track with AFD ancillary data packets and
Active Format Descriptor attribute of the Generic Picture Essence descriptor in the MXF
header metadata is absent, then the AFD value for the K2 clip is derived from the AFD
ancillary data packet located around 2 seconds into the material. That AFD value is then
copied to the K2 clip properties. 2
If there is no AFD in the MXF, the GXF, or the data track, then no AFD is set. 3
GXF Export: (both AFD and ARC values inserted into XML of stream)
Description Condition
AFD setting is ignored, but setting is retained with clip
ARC settings apply
Exported to K2 system that does
not support AFD
AFD overrides ARC settings Exported to K2 system that
supports AFD
GXF Import
Description Condition
ARC converted to AFD Imported from K2 system that
does not support AFD
AFD overrides ARC settings Imported from K2 system that
supports AFD
MXF Export
Description Condition
If clip property is not set, do not add property in stream AFD from clip property added
to properties of the video in the
header metadata
No change required AFD from data track in stream’s
ancillary data
ARC is K2 specific and therefore not included in MXF transfers.
MXF Import
AFD is stored in the clip property setting of the clip Imported stream has AFD in the
header metadata
AFD is stored in the clip property setting of the clip. (AFD is
taken from the ancillary data two seconds from the beginning,
or, if the clip is less than 2 seconds long, from the last valid AFD.) Imported stream has AFD in the
data track
No AFD Imported stream has no AFD
ARC is K2 specific and therefore not included in MXF transfers.
232 K2 System Guide 06 November 2012
Specifications