Cropping mode, Xedit (see – Grass Valley Kaleido-X v.7.80 User Manual
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Creating Layouts
Cropping Mode
• Video raster follows AFD/WSS: A video monitor can be configured so that WSS, AFD VI,
or AFD 2016 metadata is used to crop (and/or add black bars to) the video signal, giving
the video raster the correct aspect ratio.
This metadata can be reported as text inside a UMD. Its presence can also be made
available in alarms as well as via SNMP traps.
Configuring Automatic Aspect Ratios
on page 263, for more information.
Cropping Mode
The display of a video signal can be cropped to remove unwanted portions, or to zoom in
on a specific portion of the image. In XEdit, you can configure a video monitor to display
signals in underscan or overscan mode (see
on page 261). 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 Technical Support (see
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.
Note:
The Kaleido-X software does not yet support automatic aspect ratio
adjustment based on decoded AFD/WSS information for signals originating
from Kaleido-IP multiviewers.
Note:
Aspect ratio decoding can also be configured for each multiviewer
input, based on decoded AFD or WSS metadata when such information is
available within the input signal (see
Calibrating Aspect Ratio Decoding
Note:
Kaleido-MX, and Kaleido-Modular-X configured for 4K UHD output,
and Kaleido-MX 4K do not support the overscan mode for video windows
spanned across multiple heads (see