FOOH: The Complete Guide to Fake Out-of-Home for Brands

In 2023, a bag the size of a bus rolled through Paris in a Jacquemus video. The same year, a giant mascara landed on the roof of a London bus for Maybelline. Neither of these scenes ever happened. And yet they were viewed tens of millions of times, shared, commented on, copied. Welcome to FOOH.

The term is still jargon-heavy, so let's keep it simple. "Out-of-home" means outdoor advertising: billboards, bus shelters, building facades. "Fake out-of-home" speaks the same visual language, but is built entirely in 3D and designed to live on a phone screen, not in the street. No location is rented. The illusion is manufactured.

Why it works so well

The answer comes down to one word: surprise. Our brains have learned to tune out conventional advertising. A branded object as tall as a building, on the other hand, triggers a split-second hesitation. "Is it real? Is it fake?" That half-second of doubt is enough to stop the scroll, and that's where everything plays out.

• ◆~1,900 FOOH videos produced in 2025, according to industry counts
• ◆~184,000 median views per video, with almost 100% organic distribution
• ◆~49M views for the Jacquemus giant bags campaign

The numbers speak for themselves. Among the standout successes, the fake Adidas billboard celebrating Messi's world title topped a hundred million views within a few days, first released as an unidentified "amateur" video. And here's what changes everything compared with physical advertising: there's no location to pay for. The billboard doesn't exist, so no one rents it. The budget goes into the creative, not into renting space.

Another, more subtle advantage: FOOH frees the brand from the constraints of the real world. No filming permit, no crane, no weather, no off-limits landmark. You can dress up the Arc de Triomphe or float a product above the Seine without ever touching either.

FOOH or traditional advertising: what changes

• ◆Reach : Local, tied to the location (Traditional OOH) / Potentially global, through sharing (FOOH)
• ◆Media cost : Space rental, often the bulk of the budget (Traditional OOH) / Near zero: organic distribution on social media (FOOH)
• ◆Lead time : Booking, printing, installation (Traditional OOH) / CGI production, a few days to a few weeks (FOOH)
• ◆Measurement : Traffic estimates (Traditional OOH) / Views, shares, comments in real time (FOOH)
• ◆Risk : Low, proven format (Traditional OOH) / Real if the render disappoints or the trick is rumbled (FOOH)

The two aren't at odds, in fact. The smartest campaigns use FOOH as a social spark up front, then switch to real advertising to anchor the message. The fake feeds the real.

The 10% rule

Here's the counterintuitive part, and probably the most important point in this guide. A good FOOH doesn't try to dazzle you with 3D. Quite the opposite. It has to feel 90% real, keeping only 10% of the impossible: the giant object, the unrealistic movement. Everything else, the lighting, the grain of the image, the slight camera shake, the passers-by, the reflections on the wet asphalt, has to be absolutely realistic.

That's where most failed FOOH give themselves away. The moment it "smells of render," the brain checks out and the effect collapses. Modeling a ten-meter bag is something plenty of studios can do. Placing it in a real street so that no one knows, for one second, whether it's real, is another craft entirely.

The fake billboard has to be believable before it's spectacular. Illusion first, effect second.

How much a FOOH costs

There's no single price, because it all depends on the complexity of the object, the setting and the level of finish. As a rough order of magnitude, industry providers put a FOOH campaign at between €5,000 and €30,000 . A fortune compared with an amateur video, a drop in the bucket compared with a week of premium advertising in a capital city. And unlike OOH, that investment produces a reusable asset: a well-built 3D model can then be adapted across multiple scenes, formats and markets.

When FOOH is a good idea (and when it isn't)

FOOH shines for a product launch, a major brand moment, a reactive activation around an event. It works especially well in luxury, beauty, fashion and sport, where the object itself is desirable and photogenic.

It's less relevant when the message is complex, rational or regulated, or when the brand has no object worth turning into a hero. And one last safeguard: FOOH is a format, not a strategy. Churning out fake billboards with no idea behind them is the surest way to wear people out, fast.

The role of a studio, and the place of AI

A successful FOOH rests on three skills that rarely come together: photorealistic 3D modeling, compositing (the art of blending the fake into the real), and genuine art direction to choose the right object, the right place, the right movement. It's studio work, not a filter.

And where does AI fit in? At Digiteyes, it comes in upstream: exploring intentions, testing lighting moods, roughing out a world before launching 3D production. It speeds up the thinking. But the final render, the one that has to fool the eye a second too long, is still crafted frame by frame by artists. That's what separates a premium FOOH from mass content that's quickly forgotten.

Frequently asked questions

• ◆What exactly is FOOH? FOOH (fake out-of-home) is a fake piece of outdoor advertising created in computer-generated imagery: a giant object or billboard integrated into a real location, shared as video on social media. The goal is organic virality, without buying any advertising space.
• ◆How much does a FOOH campaign cost? Depending on the 3D complexity, the setting and the finish, a FOOH generally falls between €5,000 and €30,000. That's no comparison with the cost of a week of physical advertising in a major city, and the 3D model produced remains reusable.
• ◆Is FOOH legal? Yes, as long as the scene is clearly a creation and not a misleading claim about a real location. Transparency is also good practice: flagging that it's synthetic content protects the brand and aligns with the labeling requirements for generated content that are becoming standard across Europe.
• ◆What's the difference between FOOH and OOH? OOH is real outdoor advertising (billboards, bus shelters). FOOH borrows its codes but everything is built in CGI and distributed online. One is measured in passes in front of a billboard, the other in views and shares.
• ◆How long does it take to produce a FOOH? From a few days to a few weeks depending on the ambition of the project: modeling the object, integrating it into the setting, compositing and finishing. The art direction phase up front is decisive in avoiding wasted time in production.