OG-ROI Series openGear card v1.6 22 www.aja.com
NOTE: Some sources can generate pixel clock rates that exceed the capabilities of
the ROI. If the incoming video’s pixel clock rate is too high, the ROI converter
will generate a full screen red matte on the SDI output to indicate this error
condition. DashBoard will also display an “Exceeds max rate” error message.
A downstream HDMI/DP/DVI/SDI monitor will still display the incoming video.
See
and
"OG-ROI Processing Capabilities" on
for potential solutions.
ROI Out Scaling
Use the ROI Out Scaling pulldown menu to select one of the following:
Auto - Automatically scales region-of-interest to maximum size with fixed aspect
ratio defined by input format (default setting).
NOTE: Auto selections in the Output screen and the Input screen are linked. Selecting
Auto from one screen will also select Auto in the other screen.
Fixed Aspect - Matte - Scales region-of-interest to maximum size to fit output
region while maintaining aspect ratio. Matting may occur if aspect ratio of
input format and output format do not match.
Full Screen - Scales region-of-interest to maximum size to fit output geometry.
This may change aspect ratio of the image. No matting will occur.
None – Crop/Matte - No scaling occurs to region-of-interest. It is always centered
on the output, and the area displayed is selected using the placement controls
in the Input menu.
Variable - Allows user to arbitrarily change position and scaling of region-of-
interest as it is placed into the output region.
SDI Output Format
The pulldown menu offers a full range of SDI Video Formats for output. For the
complete list, see
"Appendix A Specifications" on page 33
. The format selection is
reported in the DashBoard graphic depicting the SDI Output.
Matte Background
Click the Matte button to pull up the matte color panel that offers various modes
of background color selection.
Figure 17. Matte Color Selection Panel
Center Button
After a screen region-of-interest has been defined, click the Center button to
quickly center the image.
