A vertical video player is usually discussed as a place for video ads, and that is where most of the attention goes. But the player is also a surface, and display creative can run on it in ways that a page-level banner cannot. In-player display ads are often the difference between a player that carries its own weight and one that only pays when video demand happens to show up. This post covers three units, what each does to the viewing experience, and when each one makes sense.
Why display belongs inside a player
Video demand is not evenly available. It varies by market, by time of day, by audience and by season. A player that can only monetize with video sits idle whenever video demand thins out, even though the viewer is right there, watching.
Display inside the player fills that gap. It also opens the placement to a much wider pool of buyers, since display budgets are larger and less specialized than video budgets, and it sits alongside the rest of a publisher’s format mix rather than replacing any of it. And because the viewer is already engaged with the player, the display creative appears in a better state of attention than a unit in the page margin.
The catch is that the player is a small, busy space. Every pixel you give to display is a pixel not showing content, unless the unit is placed where it takes nothing away. That trade-off is what separates the three units below.
Linear display: 336×280 at the top of the player
The linear display unit is a 336×280 display creative shown at the top of the player, in the position a video ad would otherwise occupy. It is linear in the same sense as a linear video ad: it runs in the content slot, and content waits for it.
This unit is the workhorse of an in-player display setup. When no video ad clears, the slot is not wasted. The viewer sees a display creative instead of a blank frame or an immediate cut to the next clip.
A few things make it work in practice:
- Keep the duration short. A display creative in a video slot should feel like a brief pause, not a wait.
- Label it clearly. Viewers should never be unsure whether they are looking at editorial content or an ad.
- Give it a countdown or a skip. The same courtesies that apply to a video ad apply here.
- Match the frame. A 336×280 creative in a portrait player needs a treatment that looks deliberate rather than dropped in.
Use the linear display unit when your priority is keeping the ad slot filled and your video fill rate is uneven. It is the most direct substitute for a missing video ad.
Linear vertical display: the full-player creative
The second unit is a vertical display creative that fills the player itself. Instead of a 336×280 rectangle sitting in the frame, the creative uses the whole portrait space, in the same shape and position as the vertical video content around it.
This is the highest-impact of the three. A full-player creative gets the same visual weight as the content, which is exactly why it needs restraint. Run too many and the player starts to feel like an ad carousel with occasional stories in it.
It suits a few situations particularly well. Brand campaigns designed for portrait screens get a frame that matches the creative brief. Sponsored story placements sit naturally here, since a branded message in the content shape reads as part of the sequence rather than an interruption, provided it is labeled. And on properties where advertisers supply social-style vertical assets, the full-player unit is the only display format that uses them without cropping.
Keep the frequency deliberate. One full-player unit in a session is a strong placement. Three in a row is a reason to leave.
Bottom wing: 320×50 below the player
The bottom wing is different in kind from the other two. It is a 320×50 display unit anchored below the player, and it runs while the content keeps playing. Nothing pauses, nothing is skipped, and no video time is given up.
That makes it purely additive. It is the one unit here that adds an impression without taking anything from the viewing experience, which is why it is usually the first one to turn on and the last one to turn off.
Its effect on the viewer is mild but not nothing. A strip below the player occupies layout space, so the page or screen needs to reserve it rather than shift when the ad arrives. Layout shift is the main risk with any anchored unit, and it is worth checking on real devices rather than assuming the reservation worked.
Use the bottom wing almost everywhere the player runs. Its steady, low-friction revenue is what makes it possible to be more selective with the two linear units above it.
Putting the three together
A sensible default looks like this. Bottom wing always on, because it costs the viewer nothing. Linear display as the fallback when video demand does not clear, so the content slot is never empty. Full-player vertical display reserved for campaigns and sponsored stories where the impact is warranted.
From there, the setup should be tuned with data rather than opinion:
- Give each unit its own reporting line, so you can see revenue and fill per placement instead of a blended number.
- Watch engagement alongside revenue. Clips viewed per session and swipe-away rate tell you whether an added unit is costing you the session.
- Change one unit at a time and A/B test it, so you can attribute the difference.
- Check page speed and layout stability after every change, particularly for the anchored unit.
The demand side is no different from video. These units are display creative delivered over OpenRTB and native responses, so they can be filled from curated demand and from the publisher’s own partners through Prebid Server, with the same ads.txt, app-ads.txt and sellers.json hygiene and the same pre-bid and post-bid fraud checks and creative filtering applied. In apps the units come through the native iOS and Android SDK, which the SDK page describes.
Key takeaways
- In-player display ads keep a video player earning when video demand is thin and open it to a wider pool of buyers.
- A 336×280 linear display at the top of the player takes the video slot, so keep it short, labeled and skippable.
- A full-player vertical display creative has the most impact and suits brand campaigns and sponsored stories; use it sparingly.
- A 320×50 bottom wing runs below the player while content keeps playing, so it is purely additive and belongs almost everywhere.
- Report per placement, test one change at a time and watch layout stability as closely as revenue.
If you want to work out which combination fits your player and your audience, get in touch and we will go through it with you.
