The videowall has become the central element of any conference's staging: it replaces the projector, serves as the stage backdrop, displays the talks and gives the event its brand image from the moment attendees walk into the room. But choosing it well isn't just a matter of square metres. The surface, the real resolution and — above all — the content that will be shown determine whether the result looks professional or whether the slides are hard to read from row twenty. At Zenor Audiovisual we install LED screens at conferences and events across Spain, and this is the guide we wish our clients had had before requesting a quote.
Videowall and LED screen: what you're actually booking
In events, when we talk about a videowall we're almost always referring to a continuous surface built from modular LED panels of 50 × 50 cm or similar, joined together to form whatever size and shape the stage calls for. That modularity is its great advantage over a fixed screen: you can build a 12 × 3 metre panoramic backdrop, a central 16:9 screen with two supporting side panels, or vertical columns showing the day's programme. Image quality depends on the pixel pitch (the distance between LEDs) and the resulting overall resolution, not just the size.
How to size the surface according to the room
A tiered auditorium and a flat hotel function room don't call for the same thing. In a flat room, the heads of the front rows block the lower part of the stage, so it's worth raising the screen or reserving the bottom strip for decorative content only, never text. The aspect ratio matters too: if speakers bring 16:9 presentations, an ultra-panoramic backdrop forces a decision about what to do with the leftover space, and that decision has to be made before the event, not during it.
- Measure the distance from the screen to the back row: the height of the content area should be roughly a sixth of that distance.
- Check the clear height of the stage and the room: the videowall needs structure and ventilation.
- Define the [aspect ratio] of the main content before deciding on the surface format.
- Ask for the right pitch: at conferences, with the audience seated from 3-5 metres away, P2.6-P3.9 is usually the perfect balance.
- Reserve signal and camera space if the conference will have a live edit or streaming.
Formats that work at a conference
The classic — and most effective — approach is a full stage backdrop with defined zones: the speaker's presentation in the centre, conference branding on the sides, and a lower-third with name and title. Another option widely used at conferences is a central screen flanked by two supporting screens that repeat the feed or show the camera shot of the speaker, essential in wide rooms. For conferences with multiple rooms, agenda screens at the entrances round out the experience and cut down on queues of questions at registration.
Content: half the success of the videowall
The most common mistake is investing in a large surface and then filling it with slides designed for a meeting-room projector. Our advice is to prepare an official conference template adapted to the videowall's real resolution and send it to speakers in advance, along with simple rules: large body text, high contrast and no embedded videos that haven't been tested. On the day of the event, a dedicated video operator manages the transitions, lower-thirds and camera feeds so that no speaker changeover is noticeable. You can find the full process in our audiovisual checklist for a conference.
“You don't book a videowall by the square metre: you book it for what the attendee in the back row can actually read.”
Common mistakes we see at conferences
- Placing text in the bottom strip of the screen, invisible from halfway back in the room.
- Not rehearsing speakers' presentations on the actual screen before doors open.
- Choosing too coarse a pitch to save money, leaving the front row seeing individual pixels.
- Forgetting the confidence monitor for the speaker: if they can't see their slides, they turn around and face away from the audience.
- Not planning for a camera feed for magnification, essential in rooms with more than 200 people.
If your conference is part of a wider plan of corporate events, it's worth unifying suppliers: the same LED staging can be adapted for the annual convention, the results presentation or the internal gala. And if the format is an outdoor concert or trade fair, the rules change: we cover them in our guide to giant LED screens for concerts and trade fairs.