Grass Valley Kaleido-Solo Installation v.2.04 - Manual (Page 23)

GUIDE TO INSTALLATION AND OPERATION
Kaleido-Solo | 19
Aspect ratio - AFD source
Select the source of the metadata that will be used by this Kaleido-Solo for aspect ratio control:
AFD: Selects AFD as the source for HD and SD (525, 625) aspect ratio descriptor.
VLI: Selects VLI as the source for the SD (525, 625) aspect ratio descriptor.
WSS: Selects WSS as the source for the SD (625) aspect ratio descriptor.
The Active Format Descriptor (AFD) flag is used to identify the aspect ratio and protected areas of a video signal.
The AFD flag is implemented differently in HD and SD:

In HD, the AFD flag (SMPTE 2016) is sent as an ancillary packet, normally found on line 11 in the vertical ancillary
space.

In SD, the AFD flag is sent as a Video Line Index (VLI) signal (RP 186), as a Wide Screen Signaling (WSS) signal
(ITU-R BT.1119-2) for 625 only, and as an AFD packet (SMPTE 2016).
Note that it is not possible to specify different sources for SD and HD, e.g.: VLI for SD and AFD for HD.
Time Code - SD Select Mode
Select whether time code extraction from SD video inputs will be automatic or manual.
Auto: The vertical interval of the incoming video is scanned and the first detected time code is extracted.
Manual: Time code will only be extracted if it appears on a specified line in the vertical interval.
In Manual mode only, the SD Select Line menu item is enabled, allowing the line number for extraction to be
specified.
Time Code - HD Select Type
Select the source of the timecode to be displayed when the input video is HD.
VITC: Use ATC VITC time code (time code updated every field).
LTC: Use ATC LTC time code (time code updated every frame).