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FS4 Frame Synchronizer/Converter v1.1
Figure 33. Downconvert Illustrations
AFD and Conversion
Active Format Description (AFD) codes are carried in the vertical ancillary (VANC) portion
of HD SDI video signals, specified in SMPTE 2016 as follows: “AFD information is intended
to guide DTV receivers and/or intermediate professional video equipment regarding the
display of video of one aspect ratio on a display of another aspect ratio.” Because
Auto
AFD
mode fully defines the size, position, and aspect ratio of the output raster, any
Custom Size/Pos
settings and any
Region Of Interest
settings are ignored, and those menus
are hidden. FS4 AFD processing (passing, removing, and re-inserting) occurs based on
the setting of parameter
SCALE Menu Group
IMPORTANT:
In Four Channel Mode, the settings in this menu group apply only to the selected Video
Processor (VID1- VID 4).
Custom Conversion
Settings
The custom settings determine the image size and shape for Upconvert mode if you
choose the
Custom
selection for those modes.
Custom settings are stored separately for each Conversion Mode. Values for each of the
Upconvert modes and SD Aspect Ratio modes (excluding OFF), plus no conversion (or
HD CrossConvert), are independently stored.
1.0 Custom Size/Pos
This parameter turns custom image settings
On
or
Off.
When Hide Inactive is on, the
Custom Size/Position
controls are only displayed when
Custom Size/Pos
is
On
. When
Custom Size/Pos
is
Off
, modified parameters are skipped in the menu system, and the UFC
hardware is programmed for unity.
1 6
9
Anamorphic
Letterbox
4
3
16:9 Downconverts To
These displays on 4:3
Crop
14:9