Ad Formats and Mid-Rolls: Where Your Revenue Comes From
Skippable, non-skippable, bumper, in-feed, masthead, and mid-rolls. Here is what each YouTube ad format is, how advertisers get charged, and how it turns into your share.
The ads that run on your videos are not interchangeable. They come in a handful of distinct formats, each with its own length, its own placement, and its own rule for when the advertiser actually gets charged. That last part is what determines whether an ad earns you anything, and it is the part most creators never learn. A skipped ad and a watched ad are not the same to your wallet.
You do not control the formats directly, the advertiser auction does, but you do control the one lever that matters most: whether your videos are long enough to carry mid-rolls, and whether you turn them on. Here is the full set of formats, how each charges, and how all of it becomes your 55%.
How an ad becomes your money
Before the formats, the mechanism. Advertisers bid for your impressions in a real-time auction. When someone is about to watch, eligible advertisers compete, the winning bid sets the price for that single impression, and YouTube collects it. You earn your share of the net: 55% on long-form ad revenue, with YouTube keeping 45%. So your ad income is the sum of thousands of tiny auctions, each priced independently. A high-demand niche means more advertisers bidding harder, which is why the same view count earns differently across topics, a gap we map in RPM by niche.
The in-stream formats that play around your video
These are the ads viewers think of as "YouTube ads": video spots that play before, during, or after your content.
- Skippable in-stream. The viewer can skip after 5 seconds. The advertiser is charged when 30 seconds are watched (or the full ad if it is shorter) or when the viewer interacts. So an ad skipped at second six usually earns nothing.
- Non-skippable in-stream. Between 15 and 60 seconds, commonly around 15 to 20, with no skip button. The viewer must watch it through.
- Bumper. Six seconds or shorter, non-skippable. Built for quick, memorable reach.
The formats that live outside the player
Not every ad interrupts a video. Two important formats appear as placements rather than playback.
- In-feed (formerly Discovery). A clickable thumbnail that shows up in search results, alongside related videos, and on the home feed. The viewer chooses to click it.
- Masthead. An autoplaying, muted video banner across the top of the YouTube home feed. It is reservation-only, booked directly through a Google sales rep, so it is the realm of big brand campaigns rather than the everyday auction.
Mid-rolls: the lever you actually control
Mid-rolls are the ads that play partway through a video, and they are the single biggest format decision you get to make. They are available only on videos that are 8 minutes or longer. You enable them, and YouTube then auto-places them at natural breaks in the video, though you can also set manual slots if you want control over exactly where they land.
This is why the 8-minute threshold shows up in so much creator advice. Crossing it unlocks multiple ad slots per video instead of just the ad before it starts, which can meaningfully raise what a single view earns. The caveat is that mid-rolls jammed into bad moments hurt retention, and retention feeds the algorithm. Auto-placement is decent, but reviewing the slots on your best videos is worth the few minutes.
A quick reference for the whole set
| Format | Length | Key detail |
|---|---|---|
| Skippable in-stream | Varies | Skip after 5s; charged at 30s watched or on interaction |
| Non-skippable in-stream | 15 to 60s | No skip; commonly around 15 to 20s |
| Bumper | 6s or less | Non-skippable; built for reach |
| In-feed | Thumbnail | Clickable in search, related, and home |
| Masthead | Banner | Autoplay muted on home; reservation-only via a rep |
| Mid-roll | Varies | Videos 8 min or longer; you enable, YouTube auto-places |
Reading formats from the outside
You will never see which ad formats run on a competitor's videos or what they earn from them. But the choices that drive those formats are visible. Whether a channel routinely publishes past 8 minutes tells you it is set up for mid-rolls. A sudden shift toward longer videos is often a monetization move, not just an editorial one. Watching how the channels in your lane structure length over time is a quiet read on how they are thinking about revenue.
What to do with all this
You cannot pick which ads run, but you can stack the odds. Make videos people actually finish, because watched ads pay and skipped ones often do not. Cross 8 minutes when the content genuinely earns the length, then turn on mid-rolls and sanity-check the placements on your strongest videos. The auction handles the rest. And remember that ads are only one slice: pairing them with memberships and fan funding is how you stop your income from rising and falling with the advertiser market alone.