What's the Maximum Length for a YouTube Bumper Ad?

A YouTube bumper ad must run 6 seconds or shorter, per Google's own video campaign specifications. The format is non-skippable — viewers can't bypass it the way they can a standard skippable in-stream ad — and it's bought entirely on a CPM basis, meaning advertisers pay per thousand impressions rather than per click or per view.

Why the Format Is Capped So Short

Google introduced bumper ads in 2016 specifically as a short, unskippable complement to longer-form video ads, designed for brand awareness and reach rather than a detailed pitch. Because the format can't be skipped, Google caps it at 6 seconds to keep the forced-viewing experience brief enough that it doesn't frustrate viewers the way a longer non-skippable ad would.

How Bumper Ads Are Bought and Measured

• Pricing model — bumper campaigns use Target CPM bidding, where the advertiser sets how much they're willing to pay per thousand impressions, not a cost-per-click or cost-per-view model.
• View counting — a bumper ad impression counts toward YouTube's public view count, but it doesn't count as a TrueView view, since the format isn't part of the TrueView skippable or non-skippable product line.
• Remarketing — views on a bumper ad can't be used to build a remarketing list, unlike engagement with some other YouTube ad formats.

Bumper Campaigns Run Separately From Other Formats

In Google Ads and Google Ads Editor, a bumper campaign can only contain bumper ads — a campaign built for skippable TrueView in-stream ads has to be created separately, since the two formats can't be mixed inside the same campaign structure. Bumper video ads can also only be added to bumper-specific ad groups, not ad groups built for other video formats.

How This Compares to Other YouTube In-Stream Formats

A standard skippable in-stream ad has no fixed minimum or maximum length — viewers simply get a Skip Ad option after 5 seconds — while a non-skippable in-stream ad (separate from the bumper format) typically runs up to 15 or 20 seconds depending on region. The bumper format sits at the shortest end of that range by design, trading length for the guarantee that every viewer sees the full message.

Bottom Line

Build bumper ad creative around a single, immediate message that fits inside 6 seconds — the format's value is guaranteed full exposure to a short message, not room to develop a longer pitch, and Google Ads won't accept a longer video into a bumper ad group regardless of campaign budget.

Source: Google Ads Help Center, "YouTube campaigns" video ad format specifications (support.google.com/displayvideo/answer/7245674).