What’s a video wall and how does it work?

A video wall is a series of synchronized displays that combine to form one large screen. That combined large screen can be used as a single canvas or it can be subdivided as needed to show a variety of content sources simultaneously.

Basic walls can be deployed using just the internal scalers built into commercial displays. However, anything beyond a basic deployment requires a dedicated processor or controller.

A video wall processor is a computer or a specialized server that takes multiple inputs, processes them and outputs synchronized content onto displays. A video wall controller is either 1) an add on to the processor which gives customers more advanced control, interactivity and lay out features, or 2) it is a solution that is both controller and processor all in one--a single solution with the functionality of both.

Why Video Walls are in such demand today

There are a few factors driving the skyrocketing rise in deployments around the world. For digital signage applications, with large format displays everywhere today, it’s getting harder to engage and attract an audience. A single display is no longer enough. Instead to compete for attention, instead organizations from around the world (even the folks at NASA) are turning to video walls with engaging content.

The increasing need for data visualization and collaboration tools is also driving the uptake in video walls. Control rooms, command centers, meeting rooms, executive suites and law enforcement are all using display walls to share data and information and to ensure informed decision making. When gathering people to collaborate and make decisions there’s no better tool than a multi-screen display.

Installation related tips Display Options

When deploying a video wall it’s important to understand the various display options available today.

Commercial video wall displays with zero bezel, narrow bezel or ultra narrow bezel are the preferred option. LED video walls are common for outdoor use. This is because outside viewing is usually from a distance. In this case low display resolution and image quality don’t matter as much. For deployments where resolution and visual performance matter, commercial LCD video wall displays are preferred.

OLED and MicroLED panels offer an alternative to LCD panels. They offer high resolution, better brightness and a wider range of colours. In addition they usually have slimmer bezels. OLED and MicroLED however are significantly more expensive than backlit LCD displays.

Blended Projection uses a controller or processor to connect multiple front or rear display projectors to create a seamless display wall. The benefit of blended projection is that the canvas has no visible bezels.

Mounting systems

While it’s possible to purchase cheap TV mounts online, this will take more time than it will save in costs. These mounts are designed for displaying a single TV and their adjustment options are limited.

Precise adjustment is key for any mount. It ensures that all wall displays are are evenly placed, level and have no gaps. Without this, the final look of the wall will not be satisfactory.

Pop out mounts are increasingly popular as they allow customers to pop out a single display and adjust it. This is important for displays without exposed sides (eg the center display on a 3x3 wall).

Specialized mounts allow users to angle individual displays for an artistic or mosaic-style lay out. Userful recommends mounts with rotation capability for art-wall deployments.

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