Create & Configure a Video Wall

Introduction

The Video Wall feature enables users to group multiple displays to form a single large canvas. This makes it easy for a single Userful host to support content translation to entire display area as a single display. Userful's video wall feature supports a variety of configurations (e.g. 2×2, 3×3, 5×5) and layouts (equidistant grid, or free-layout and artistic).

To create a video wall, click Control Center > Mapping > New Video Wall button. The video wall configuration window allows video wall integrators to adjust the video wall size, layout, bezel correction and color calibration.

Note: Video Wall Calibration is not optimized for mobile devices. Using a desktop/laptop browser experience for this process is recommended.

The content that you want to show on the displays depends on what source the video wall is mapped to. This is discussed in a later step.

Grid Layout

Grid Layout allows video wall integrators to configure the video wall in an equidistant grid or in synchronized rotation. This layout allows users to adjust the video wall size (number of displays), display assignment, padding between displays and color calibration in an equidistant layout.

Add Rows and Columns

The default video wall size is 4 displays with 2x2 configuration. To add/delete rows or columns, use the +/- buttons next to Rows/Columns.

To rotate video wall in a given direction, select the rotation option from the drop-down.

To assign IDs to a display, click the drop-down select-box in the center of the "display" and then select the ID of the display which will be in that position of the video wall. During calibration, the phyiscal display will have a corresponding number broadcast on it to easily identify your displays.

Flip Top Row

Enable "Flip Top Row" under Rotation - Normal Landscape as shown in the image to the right to view the effect of flip on the physical displays.

Depending on the rotation, Flip Top Row may read Flip Bottom Row, Flip Right Column, or Flip Left Column.

Padding

Padding enables the ability to add or remove space between rows and columns. This can be adjusted by clicking the +/- icons besisde Rows and Columns.

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Color Calibration

Color Calibration allows you to adjust the color characteristics of any display in the video wall configuration. To perform color correction:

  • Click Color Calibration
  • Enter values or use mouse wheel to select values for color, brightness and contrast respectively.
Note that performing color correction is a process best done with the displays themselves, since a disruption to the Userful system or an accidental deletion of the video wall may result in the loss of significant work.
Once you've finalized your grid layout video wall, click OK. You can now map the new video wall to a source.

Artistic Layout

Artistic Layout, available with Professional+ and Enterprise license tiers of Userful, enables users to configure a video wall made of displays of any size and aspect ratio, at any angle and orientation.

To configure an Artistic Layout, click New Video Wall, then Switch to Artistic in the bottom-left corner. Note that the grid controls disappear. You will want to Add Display if you are dealing with more than 4 displays.

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Clicking each display will show a set of controls.

The Arrows will rotate the display in 90-degree increments.

The Yellow Dot can be clicked-and-dragged to rotate the display by hand a mouse is recommended for this)

The gear icon brings up some manual display options.

The trash icon will delete the display.
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Manual Options

The gear icon opens a Display Settings where you can manually adjust:

Display Size - this should be read from the EDID but sometimes needs to be corrected to accurately represent the size of the display.

Rotation - allows you to manually enter the exact angle of rotation in degrees.

Position - allows fine-tuning of display position in relation to other displays. It’s better to use the calibration shortcuts below for this, however.
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Calibration Keyboard Shortcuts

Userful enables users to take advantage of various keyboard shortcut keys for easier pixel perfect video wall calibration.

Select one display in the video wall with your mouse and then use the below key combinations to adjust calibration. Note that these shortcuts are intended to be used while looking at the wall itself, not the Control Center interface in your browser.

Key Combination
Function
Arrow Keys (Up, Down, Left, Right)
One unit of movement in any direction
Shift + Arrow Keys
10 times (10x)  movement in any direction
Ctrl + Arrow Keys
0.1 (0.1x) unit of movement in any direction
Bracket Keys [ ]
1 degree of rotation clockwise or counterclockwise
Shift + Bracket Keys [ ]
10 degrees of rotation clockwise or counterclockwise
Ctrl + Bracket Keys [ ]
0.1 degrees of rotation clockwise or counterclockwise
Tab
Select the next display
Shift + Tab
Select the previous display
Ctrl + Click
Select multiple displays

Artistic Video Wall Calibration Tips

Calibrating an artistic wall can be challenging, especially when doing it for the first time. Here are some helpful tips:

  1. Bring a leveling device - straight edge, leveling laser, or even a piece of string, so you can be sure that the lines on the displays are really lining up, and your eyes are not betraying you after a long day!
  2. Use a laptop (Windows, Mac, Chromebook, Linux) with a mouse to do calibration, not a mobile device with a touchscreen.
  3. Verify all display sizes are accurate. Sometimes a client or uClient will not read the correct size for the display from the EDID. Ensure the display size (in inches) matches the display on the wall.
  4. If you are creating a wall with ~12 displays or fewer, start with one central display, and add additional displays, one at a time. Make sure you are completely satisfied with the level of calibration before moving on to the next display.
  5. If you are creating a larger wall, start with the outer-most, corner displays, pick a segment, and work your way inwards. You can select multiple displays (Ctrl+Click) and move them around as a group if things start to look mis-aligned.
  6. The majority of your time spent calibrating displays should be spent with your eyes on the video wall displays themselves. Do not try to achieve perfect calibration by looking at the UCC calibration interface.
  7. Practice with and use the keyboard shortcuts!