Display Calibration
Visually position and resize the video output on the physical display. For LED walls, scrims, and video processors.
Display Calibration is a visual tool for positioning and resizing the MVP's video output on the physical display. It exists for one main use case: mapping the output onto irregular or non-standard surfaces — LED walls, projection scrims, video processors that expect a specific window within a larger canvas, or any scenario where "full-screen at native resolution" isn't what you actually want on the wall.
Like Display Settings, every calibration setting is stored per display and automatically reapplied when the same display is reconnected.
Where to Find It
Open System Settings (gear icon → System).
Expand the Display Settings panel.
Click the Display Calibration… button.
The Display Calibration button is enabled only when an HDMI display is connected. If nothing is plugged in, connect a display first.
The Calibration Canvas
The dialog is dominated by a large interactive canvas representing the connected display.
Outer rectangle — the physical display, drawn at its full resolution and aspect ratio.
Inner blue rectangle — the output rectangle. This is where the video actually appears on the display.
A small label in the dialog header shows the canvas size (the display's current resolution). The header label updates if you change the resolution from Display Settings and re-open the calibration dialog.
Manipulating the Output Rectangle
You can adjust the inner rectangle three ways:
Drag the body — click anywhere inside the rectangle and drag to move it around the display. The rectangle is constrained to the display bounds.
Drag a corner handle — the four square handles at the corners scale the rectangle. With Lock aspect on (default), corners scale proportionally; with it off, each corner moves independently.
Drag an edge pill — the four thin blue pills on each side resize along a single axis. With Lock aspect on, dragging an edge also scales the perpendicular axis proportionally about the rectangle's center.
The on-screen video updates only when you release the mouse, not during the drag.
Inspector Panel
To the right of the canvas is a numeric inspector with four fields:
X / Y — top-left position of the output rectangle, in display pixels
Width / Height — size of the output rectangle, in display pixels
You can type values directly, or hover over a field and scroll the mouse wheel:
Scroll wheel — adjusts by ±1 per tick
Shift + scroll wheel — adjusts by ±10 per tick
After a burst of scrolling stops for ~200 ms, the change is pushed to the display.
Below the inputs, two status lines show:
Aspect — the rectangle's current aspect ratio (e.g.,
16:9). Turns orange and shows "(stretched)" when the rectangle's aspect ratio differs from the display's, which means the video will be horizontally or vertically distorted.Coverage — the percentage of the display's area covered by the output rectangle.
Toolbar Buttons
Below the canvas:
Reset to 100%
Returns the output rectangle to fill the entire display (no scaling, no offset).
Match {aspect}
Centers a rectangle of the display's own aspect ratio. When the display is, say, 16:9 and you've stretched the rectangle to 4:3, clicking Match 16:9 restores a full-display 16:9 rectangle. Disabled when the rectangle is already a full-display match.
Lock aspect
Toggles aspect-ratio locking for drag operations. On by default. With lock on, corner and edge drags preserve the rectangle's current aspect ratio. With lock off, every handle moves independently.
Applying Changes
The dialog has two action buttons at the bottom:
Cancel — discards your changes and reverts the on-screen output to the previously-saved geometry.
Apply — saves the current geometry to the display's profile and confirms the new output position. The button is disabled until you've made a change.
When you click Apply:
The geometry is persisted to the display's profile file.
A snackbar confirms "Display calibration saved."
The dialog closes.
The change has already been applied to the screen during your last drag/release or scroll burst — clicking Apply is what makes it permanent. If you close the dialog with Cancel after making changes, the screen reverts to the saved state.
How the MVP Maps Video onto the Output Rectangle
The video frame is always mapped onto the full output rectangle you've drawn — the rectangle is purely a destination, not a crop. Whatever the video resolution is, the MVP stretches or shrinks it to fit your rectangle exactly.
This means:
A 1920×1080 video shown in a 960×540 rectangle is scaled down 2× in each axis. No content is lost.
A 1920×1080 video shown in a 1920×540 rectangle is squashed vertically — the same image, half as tall. Aspect ratio is stretched.
An LED wall that takes its input from an HDMI source but only uses, say, the left 1200 pixels of a 1920×1080 signal — set the output rectangle to
X=0, Y=0, Width=1200, Height=1080and the video fills exactly that area.
If you want the video to fill some part of the display without stretching, use Lock aspect while you drag, and the rectangle will always preserve the video's aspect.
Related Pages
Display Settings — Resolution and refresh rate selection
System Settings — Open the gear menu to reach this dialog
Show Day Checklist — Verifying display geometry at the venue
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