What's the Maximum Length for a YouTube Non-Skippable In-Stream Ad?

A standard YouTube non-skippable in-stream ad must run between 7 and 15 seconds in most markets. That ceiling extends to 20 seconds in the European Union, India, Malaysia, Mexico, and Singapore, per Google Ads Help's official video ad specifications.

This Is the Opposite Rule From Skippable In-Stream Ads

Non-skippable in-stream ads work under the reverse logic of their skippable counterpart. Standard skippable in-stream ads have no fixed minimum or maximum length at all — viewers simply get a Skip Ad option after 5 seconds, however long the ad actually runs. Non-skippable ads trade that flexibility for a hard length window, since the viewer has no way to exit the ad early:

• Non-skippable in-stream ads — 7 to 15 seconds (up to 20 seconds in the EU, India, Malaysia, Mexico, and Singapore), no option to skip.
• Bumper ads — Google's companion short-form, non-skippable format, capped at 6 seconds.
• Skippable in-stream ads — no fixed length limit, but skippable after 5 seconds.

Why the Regional Variation Exists

Google doesn't publish a single stated rationale for the 15-versus-20-second regional split, but it tracks with those markets' broader TV and digital ad-length conventions, where 20-second non-skippable formats are a more established norm than in the US. Advertisers running the same creative globally need to account for this: a 20-second cut approved for Mexico or India will need to be trimmed to 15 seconds for US and most other markets, or built as two separate length versions from the start.

Why Google Caps Non-Skippable Length at All

Because the viewer can't exit a non-skippable ad early, Google limits how long one can force a viewer to wait before their video resumes. Removing a hard ceiling on a format the viewer can't escape would create a materially worse viewing experience than the skippable format, where length is self-limiting by nature — a boring 90-second skippable ad simply gets skipped, so Google doesn't need to cap it.

Practical Implications for Creative Production

• Build non-skippable creative to the 15-second mark first, then adapt a 20-second cut only for campaigns specifically targeting the EU, India, Malaysia, Mexico, or Singapore.
• Don't confuse this limit with bumper ads, which are a separate, shorter 6-second-max format often used alongside non-skippable or skippable ads in a sequential campaign.
• Check length compliance before upload — Google Ads will reject a non-skippable in-stream ad that exceeds the applicable regional cap rather than trimming it automatically.

Companion Banners Can Extend the Message on Desktop

A non-skippable in-stream ad can run alongside a companion banner — a 300 x 60 pixel image, up to 150KB, in JPEG, GIF, or PNG format, that appears next to the video on the YouTube watch page. Companion banners are desktop-only; they don't show on mobile, connected TVs, or other devices. Advertisers can either upload a custom banner or let Google auto-generate one, and clicking the banner takes the viewer to whatever URL was set for the campaign — giving a short non-skippable ad a secondary, clickable call to action it otherwise wouldn't have room for.

Bottom Line

Keep non-skippable in-stream creative at 15 seconds or under for broadest market compatibility, and only produce a 20-second version specifically for campaigns targeting the EU, India, Malaysia, Mexico, or Singapore.

Source: Google Ads Help, "Non-skippable in-stream ads" (support.google.com/google-ads/answer/11462260).