AJA FS2 Manual - Manual (Page 37)

FS2 v2.1r1 www.aja.com 37
also use a cable adapter that has a DVI connector on one end of the cable and an HDMI
connector on the other. The FS2 HDMI input connector is a terminating input and does
not have a “loop-through” output.
Menu Setup
To enable a computer input in the FS2 menu system, select HDMI as the input using
Video Menu 1 for the Video Processor channel you plan to use. The FS2 will automatically
detect the frame format of the incoming video and scale/convert the input to the
selected output format. You can select the same HDMI input for both Video Processors
and independently convert the input to separate video output formats.
Scaling
If the DVI source video frame aspect ratio is not the same as the output video format
frame aspect ratio, the FS2 scales the input frame size based on the current Upconvert
(Video Menu 6) or Downconvert (Video Menu 7) mode selection.
If the FS2 output format is set to a Standard Definition (SD) format (525i/59.94 or 625i/
50), the current Downconvert mode is used to determine the frame scaling mode.
If the FS2 output format is set to a High Definition (HD) format (anything other than SD),
the current Upconvert mode will be used to determine the frame scaling mode.
Genlocking
The FS2 does not genlock (synchronize) to computer format video inputs. If a computer
video input feeds Video Processor 1 or 2 and the current Genlock Source (System Menu
8) is set to Vid1 Input or Vid 2 Input, the system automatically defaults to Free Run mode.
You can select Reference as the Genlock Source and apply a broadcast video signal to the
Reference input if you wish to genlock to video rather than use Free Run mode.
Table 5. Scaling Applied With Downconvert or Upconvert Mode Selected
Downconvert
Mode
Upconvert
Mode
Frame Scaling
Letterbox 4x3 Pillar Scale the input frame until the longer dimension (H or V) touches the output raster
edges. The shorter dimension is filled with background video. Maintains the original
pixel aspect ratio.
Crop Wide Zoom Scale the input frame until the shorter dimension (H or V) touches the output raster
edges. The longer dimension is cut off (cropped) to fit the output frame. Maintains the
original pixel aspect ratio.
Anamorphic Full Screen Scale the input frame independently in H and V until both dimensions fill the output
raster. No cropping or background fill is required, but the original pixel aspect ratio
may be “stretched” to fill the output raster.
14x9 14x9 Pillar Compromise between Letterbox and Crop modes: some background fill may be
required in the shorter dimension to fill the output raster (but not as much as
Letterbox mode), and some cropping may be required in the longer dimension to fit
the output raster (but not as much as Crop mode). Maintains the original pixel aspect
ratio.
Auto AFD LB to Full When used with “computer format” inputs these modes default to Letterbox / 4x3
Pillar behavior.