The most valuable screen real estate in the living room may not be inside any stream at all. This week Nexxen announced standardised inventory specifications for smart TV home-screen advertising across TV manufacturers, unifying the hero banners and tile placements that greet every viewer the moment the set powers on. The announcement landed on 20 August and was covered by ExchangeWire and AdExchanger through the week.
The problem being solved is old-fashioned fragmentation. Home-screen native inventory has historically varied by OEM in ad sizes, formats and click actions, which meant a buyer wanting hero placements across several TV brands had to build and traffic each one separately. Nexxen’s framework standardises the request structures so DSPs can bid programmatically across manufacturers, with the company’s Nexxen Studio creative technology handling format adaptation across the differing canvases. The buy-side roster at launch includes The Trade Desk, Google Display & Video 360, StackAdapt, Basis, Brainlabs and H/L, activating against OEM inventory from V (formerly VIDAA), TCL and TiVo Ads.
The efficiency claim is concrete. Standardised specs cut onboarding time for new OEM partners by as much as 50%, according to Nexxen’s account to AdExchanger. Creative is uploaded once, and AI-assisted resizing formats it across platforms.
Why buyers care is equally concrete. Viewers spend an average of 10.5 minutes deciding what to watch after turning on the TV, according to Nielsen’s State of Play research. That is a long, attentive window in which the home screen is the only ad surface in the room — and until now it has been sold mostly by the OEMs themselves, direct, to a narrow set of entertainment marketers promoting shows. Nexxen’s chief commercial officer, Kara Puccinelli, says that is already changing: the demand mix has evolved “away from just media and entertainment brands” toward performance-driven advertisers. Brainlabs’ head of programmatic, Ben Kahan, was blunter about why standardisation was needed, pointing to “huge fragmentation” in these non-standard formats; his agency is now testing the placement for a retailer running upper-funnel campaigns.
01A new competitor for the CTV ad dollar — one level above the app
For CTV app publishers, the strategic fact is uncomfortable but better confronted early: the home screen sits above every app in the hierarchy of the device. The OEM owns the first impression of every session, and once that impression is standardised, programmatic and pitched to performance budgets, it competes for the same advertiser dollar as in-stream inventory — with an attention story (the decision window) and a reach story (every session, regardless of which app wins the viewer) that app-level sellers cannot match on that surface.
That does not make it a zero-sum loss. Home-screen placements are, today, largely a discovery and tune-in format — the historical buyer base was streamers marketing their own shows — and a healthier, more liquid tune-in market drives audiences into apps, where publishers monetise the actual viewing. The nearer-term risk is subtler: as OEM inventory becomes easier to buy than app inventory, budget that once tolerated the friction of publisher-direct CTV deals may drift toward the frictionless option. Ease of transaction has redirected spend before, independent of media quality — that lesson is a decade old in display.
There is also a precedent worth registering. This is one intermediary’s specification, adopted by three OEMs, not (yet) an industry standard from a neutral body. The playbook — aggregate fragmented native inventory, standardise the spec, open it to DSPs — is exactly how other premium-but-fiddly formats became programmatic categories. Whoever writes the spec that wins tends to own the pipes; publishers have lived with the consequences of that in other channels.
02Why this matters for publishers
| A premium surface you do not own is being industrialised | The home screen monetises the audience's attention before any app is chosen. As it standardises, it becomes a genuine line item competing with your in-stream inventory for CTV budgets. |
|---|---|
| The buyer base for it is broadening | When a format moves from entertainment tune-in budgets to performance advertisers, it stops being adjacent demand and starts being contested demand. |
| Ease of activation moves money | A 50% cut in onboarding friction is precisely the kind of quiet advantage that redirects spend from harder-to-buy inventory, whatever the relative media quality. |
| Standardisation precedents travel | A single vendor's spec becoming the de facto standard for a premium CTV format is a governance question the sell side should engage with early, not after the pipes are set. |
Smart TV home screens are following the classic path from bespoke premium placement to standardised programmatic category, and the 10.5-minute decision window explains why the demand side is interested.
03What publishers should do
04The bottom line
Smart TV home screens are following the classic path from bespoke premium placement to standardised programmatic category, and the 10.5-minute decision window explains why the demand side is interested. For CTV publishers the development is double-edged: a new, well-capitalised competitor for living-room budgets sits one level above every app — but it is also a discovery surface that can be bought, and a preview of how quickly ease of transaction reshapes a format’s buyer base. The response is not alarm; it is symmetry. Make your own inventory as easy to buy as the home screen is becoming, sell the attention story only in-stream can claim, and show up in the standards conversation while the spec is still being written.