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Video Wall Digital Signage: How to Build One in Castit

By Tijana Kirkov23 October 2026

Hang four displays side by side in a lobby and you usually get four separate loops that never quite line up. A digital signage video wall fixes that. It is a group of displays that show one picture together. Castit now supports video walls on paid plans: you pair the players to one screen, place them in the wall editor, and your content plays across all of them in sync.

More companies are planning for walls like this. Mordor Intelligence valued the global video wall market at USD 11.81 billion in 2025 and expects it to reach USD 23.06 billion by 2031 (Mordor Intelligence, 2026).

This article explains what video walls are, where they make sense, and how to set one up in Castit step by step. It also covers how to prepare content so nothing important ends up hidden behind a bezel.

What is a video wall in digital signage?

A video wall is several displays mounted together and managed as one canvas. Your digital signage software splits the content across the displays, so one image, video, or playlist fills the whole surface instead of repeating on every screen.

Most video walls are built in one of two ways. Tiled walls use separate commercial displays, often with thin bezels, and each display has its own digital signage player. The software decides which part of the picture each player shows and keeps them in time. LED walls are built from modules that usually take a single signal through their own controller, so to your digital signage platform they already look like one large display.

LED held 45.74% of video wall revenue in 2025, according to Mordor Intelligence (Mordor Intelligence, 2026). Tiled walls are still the practical choice for many offices, stores, and reception areas. They run on standard displays, cost less to start, and a single broken panel can be swapped without touching the rest of the wall.

Digital signage vs video wall: what's the difference?

A video wall is a type of digital signage, not an alternative to it. Digital signage covers any screen that shows centrally managed content. A video wall is one specific layout where several displays act as one.

The difference matters most when you plan the installation and the content:

| What differs | Single digital signage display | Digital signage video wall |
| --- | --- | --- |
| Displays | One | Several, as many as the wall needs |
| Content format | Standard landscape or portrait | Custom size that matches the wall's shape |
| What you plan for | Placement and viewing angle | Layout, bezels, and timing between displays |
| Typical location | Corridors, menu boards, meeting room doors | Lobbies, showrooms, shop windows, transport hubs |
| Viewing distance | Close to medium | Medium to far |

If one display is big enough for the space and the message, a single screen is simpler. A wall makes sense when the space is large, when people see it from a distance, or when the shape of the wall itself is part of the design, such as a long strip above a counter.

Where are digital signage video walls used, and why?

Video walls go where a single display would look too small for the room, or where one message has to be seen from across a busy space. The common thread is scale: a wall gets noticed from further away and can show more at once.

Receptions and lobbies. A wall behind the front desk shows a brand film, welcome messages for visitors, or company news. It is often the first thing people see when they walk in.
Retail and showrooms. Product launches and campaign visuals shown at full size. Car dealers use walls to show models and configurations they don't have on the floor.
Airports, stations, and transport hubs. Transportation accounted for 28.22% of video wall revenue in 2025, driven by terminal upgrades that combine flight information and advertising (Mordor Intelligence, 2026).
Operations and control rooms. Dashboards, KPIs, and status screens that a whole team needs to see at the same time.
Hotels, venues, and events. Event schedules, sponsor content, and wayfinding in foyers and conference areas.

Europe is a big part of this demand. IMARC Group names Europe as the largest regional market for video walls in its 2025 market report (IMARC Group, 2025).

What's new in Castit: video wall support

Castit now lets you combine several displays into one video wall from the same dashboard you use for the rest of your digital signage. The feature is available on paid plans, with no fixed limit on the number of displays.

In Castit, a screen is the content setup, and players are the devices that show it. A video wall is simply a screen with several players paired to it. You arrange those players in a visual editor that mirrors the real wall, and from then on everything you add to that screen plays across the whole wall. Images, videos, and playlists work the same way they do on any other screen.

Every display on the wall needs its own player, and the players don’t have to match. You can combine SoC displays with Android, Windows, and Linux players in the same wall, so you can build it from the hardware you already have.

Timing is handled for you. Content changes reach the wall about 30 seconds after you save, and every display starts the new content at the same moment, so you don't get one panel running a few seconds ahead of the others.

How do you set up a video wall in Castit?

You set up a video wall in six steps: pair the players to one screen, open the wall editor, place the displays, check which screen is which, save, and add content. Most walls take a few minutes once the displays are mounted and the players are online.

Before you start

A paid Castit plan.
One screen in Castit with all the wall’s players paired to it. Every display needs its own player.

1. Pair the players to one screen

Open Screens and pick the screen for your wall. Pair every display's player to it with Pair player or Add a player on. The players then appear under Players.

2. Open the wall editor

On that screen, go to Players › Wall layout and switch Video wall on.

3. Place your displays

Build the wall in the editor the way it hangs in real life:

Drag each player from Players on this screen onto the canvas, in the position it has on the real wall.
Or use Arrange as… for a ready-made layout, such as all screens in a row.
Turn on Snap to edges to line the displays up neatly.
Turn on Person for scale to show a human figure, so you can judge the real size of the wall.
Click a display, on the canvas or in the list, to set its size, shape, frame (bezel width), and rotation (landscape or portrait).
Change the display numbers by dragging the list or using its arrows.

The more accurate the sizes and bezel widths, the better the picture lines up across the frames. It is worth measuring one display with a tape measure before you start.

4. Check which screen is which

Click Identify displays. Each physical display shows its number and name, so you can see at once whether the wall matches the editor. If two displays are swapped, fix the order in the list before you save.

5. Save

Click Save layout. The displays switch to the wall within about 30 seconds.

6. Add content

Add images, videos, apps, or playlists under Screen contents, as you would for any screen. They now play across the whole wall. Any later change reaches the wall about 30 seconds after saving, and every display starts it at the same moment.

How do you make content that fits a video wall?

Content looks best when it is made in the exact shape of the wall. The editor shows the picture size at the top right, for example Picture 3840 × 436 px for five screens in a row. Content in that exact size fills the wall without cropping. Other sizes still fill the wall, but they get cut at the edges.

A five-screen row above a reception desk is a good example. A standard 16:9 promo video will lose most of its top and bottom there, so a wide panorama, a slow horizontal pan, or a logo animation designed for that strip works much better. Ask your designer for the exact pixel size from the editor before they start.

A few more habits that save rework:

Keep text and faces away from the bezels. The frames between displays cut through anything placed on them, and a line through a face or a word is the first thing people notice.
Read the warnings in the editor. It tells you, for example, if an RSS ticker is on the screen or if a display's size is only a guess.
Decide what to do with spare players. A player you leave off the wall keeps showing the whole screen content, as before. That is useful for a single extra display nearby that should show the same content in full.

What are the benefits of running a video wall in Castit?

The main benefit is that the wall becomes one more screen in a system you already use. You don't need separate wall software, a different login, or a different way of publishing content.

One platform for every screen

The wall lives in the same Castit account as your other screens, with the same playlists, scheduling, and user access. Nobody has to learn a new tool.

Content in sync

Every display starts new content at the same moment, so videos run across the wall as one picture. Changes reach the wall about 30 seconds after you save.

A layout that matches your space

Mix display sizes, set portrait or landscape per display, and enter the real bezel widths. Your wall doesn't have to be a neat 2 × 2 grid.

Remote changes

Castit runs in the cloud, so you can change the wall's content from anywhere. A campaign swap on a showroom wall in another city takes a few clicks.

For partners, a new service on the same platform. Grand View Research estimates the global digital signage market at USD 31.09 billion in 2025 (Grand View Research, 2026), and video walls are one of the display types clients ask about. Certified partners can now quote and deliver a wall for existing Castit clients, configure it remotely, and support it from the same dashboard as the rest of the installation.

Turn the displays you already have into one video wall

If you already run Castit on a paid plan, the wall editor is waiting under Players › Wall layout on any screen. Pair the players, place the displays, and your next playlist plays across all of them. If you are planning a new wall, we can help you choose a layout and the right display sizes for your space.

The quickest way to see it in action is to book a demo, where we set up a video wall with you live. If you have questions about your own space, contact us, and if you are a reseller or integrator, we'd like to talk about delivering video walls to your clients together as a Castit partner.

FAQ

What is a digital signage video wall?

A digital signage video wall is a group of displays mounted together that show one picture as a single large screen. Digital signage software splits images, videos, and playlists across the displays and keeps them in time. Video walls are used in lobbies, showrooms, transport hubs, and control rooms, where one display would look too small or where content must be seen from a distance.

How many displays can a video wall in Castit have?

There’s no fixed limit. A Castit video wall can have as many displays as your wall needs, each with its own player paired to the same screen. The players can run on different platforms, such as SoC, Android, Windows, or Linux. You arrange them in the wall editor under Players › Wall layout, where you also set each display’s size, bezel width, and rotation.

What resolution should video wall content be?

Content should match the picture size shown at the top right of the Castit wall editor, for example 3840 × 436 px for five screens in a row. Content in that exact size fills the wall without cropping. Content in other sizes still fills the wall, but it gets cut at the edges, so text or faces near the edges can disappear.

Can I mix portrait and landscape displays in one video wall?

Yes. In the Castit wall editor you click a display to set its size, shape, bezel width, and rotation, landscape or portrait. That lets you build walls that match the real installation, including mixed display sizes and orientations. Click Identify displays afterwards to confirm that each physical display matches its position in the editor.

Do I need a paid plan to use video walls in Castit?

Yes, the video wall feature is available on paid Castit plans. You also need one screen in Castit with all the wall’s players paired to it, one player per display. Once the layout is saved, the displays switch to the wall within about 30 seconds, and you add content under Screen contents as for any other screen.

What is the difference between digital signage and a video wall?

A video wall is one type of digital signage. Digital signage means any display that shows centrally managed content, from a single menu board to a network of screens. A video wall combines several displays into one canvas, which needs custom-sized content and attention to bezels and timing. In Castit, both are managed from the same dashboard.