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Creating Layouts
Key Concepts
signals in underscan or overscan mode (see Video Cropping/Zooming, on page 218). Not
supported on Kaleido-IP.
Underscan: When a video window is in underscan mode, it displays the full signal without
cropping any of the image.
Overscan: When a video window is in overscan mode, it displays a selected area of the
image, typically zoomed and cropped to fit the window. By default, the overscan mode
crops the left, right, top and bottom margins by 5% each.
Changing the underscan/overscan mode dynamically
It is possible to dynamically change the overscan/underscan mode based on the current
feed assigned to a video monitor. For example, you can change logical sources in a video
monitor using Gateway commands, where a video source requires the monitor to be in
overscan mode but a graphics source requires the monitor to be in underscan mode to
avoid cropping the image. A custom action script can make the monitor change its scan
mode depending on the format detected. For information on how to create such a script,
contact support@miranda.com.
Custom overscan
The amount of overscan applied can be customized to some extent, which will depend on
the original signal resolution, relative to the size of the video window where the image is
displayed. Excessive cropping may result in a loss of video image on the monitor wall.
Likewise, when a layout has several monitors with heavy cropping settings on the same
display head, some video windows may turn blank.
The examples listed below may be used as guidelines. These are based on a 1080p display
resolution. Displays with a lower resolution can afford more cropping.
•In the case of a full screen video window:
• The KMV-3901/3911 supports cropping up to 6% in both directions (i.e., 6%
vertically, and 6% horizontally).
• The Kaleido-X and Kaleido-X16 support cropping up to 18% in both directions.
• In the case of a video window occupying 1/16
th
of the display area:
• The KMV-3901/3911 supports cropping up to 17% in both directions for a 1080i HD
source, or up to 38% for an SD source.
• The Kaleido-X and Kaleido-X16 support cropping up to 42% in both directions.
Spanning
Graphical layout elements (UMDs, audio monitors, etc.) and video monitors can be made to
span across multiple heads, on up to 4 displays, portrait or landscape, in any combination.
On displays that fit perfectly side by side, this gives the impression of having one large
screen. When any layout element is spanned across displays, an icon automatically appears
in the top right corner.
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