YouTube offers five primary video ad formats: skippable in-stream ads, non-skippable in-stream ads, bumper ads, in-feed video ads, and YouTube Shorts ads. Selecting the correct format depends on your campaign objectives, ranging from top-of-funnel brand awareness to bottom-of-funnel direct-response conversions. Each format has distinct requirements regarding video length, aspect ratio, and compatible Google Ads campaign types.
How Do YouTube Shorts Ads Work and When Should You Use Them?
A YouTube Shorts ad is a vertical, 9:16 aspect ratio video ad up to 60 seconds long that plays within the vertical Shorts feed on mobile devices and tablets. These ads are highly effective for driving top-of-funnel traffic, managing remarketing lists, or scaling campaigns already proven on vertical video platforms like TikTok or Instagram Reels.
When launching these campaigns, several guidelines should be followed to maintain quality:
- Use dedicated vertical creative: Avoid using Google's automated AI tools to crop standard landscape (16:9) video ads into vertical formats. Instead, film and edit dedicated 9:16 vertical creative to prevent poorly framed visuals or cropped text.
- Isolate campaigns by device: Separate your Shorts campaigns from standard landscape campaigns. Ensure that your targeting is limited exclusively to mobile and tablet devices, as desktop optimization behaves differently for vertical feeds.
- Leverage compatible campaign types: Shorts ads can be deployed within Demand Gen, Performance Max, Video Reach, and Video View campaigns.
This visual mock-up demonstrates the ideal safe zones for vertical creative, highlighting where text overlays and user interface buttons appear on a mobile device screen.
What Are YouTube In-Feed Ads and How Do They Drive Conversions?
A YouTube In-feed ad is a thumbnail-and-headline ad placement that appears on the YouTube homepage, within search results, or alongside related videos. Unlike in-stream video ads that interrupt active playback, in-feed ads require the user to actively click the thumbnail to watch the promotional video on its dedicated watch page.
This format is highly recommended for businesses selling high-consideration products or offerings with a long sales cycle. For brands selling high-ticket or complex items, reviewing ecommerce YouTube ad examples can show how successful advertisers structure long-form, educational videos that build trust before asking for a sale.
To optimize in-feed ads, keep the following specifications and best practices in mind:
- Prioritize click-through rate (CTR) assets: Because the format relies on user clicks, your thumbnail must be highly engaging and your headline must mimic organic YouTube content rather than looking like an aggressive sales pitch.
- Incorporate search keyword strategies: If you run existing PPC search campaigns, you can target the same high-intent search terms with in-feed ads to appear at the very top of YouTube search results.
- Utilize appropriate campaigns: In-feed ads are supported in Video View, Video Reach, and Demand Gen campaigns, but cannot be isolated as standalone creatives in Performance Max.
How Do Skippable and Non-Skippable In-Stream Ads Compare?
Skippable in-stream ads allow viewers to skip the advertisement after 5 seconds of play, whereas non-skippable in-stream ads require the viewer to watch the entire message, which can run up to 30 seconds. Bumper ads are a third variation, functioning as non-skippable ads restricted to exactly 6 seconds.
The table below compares the technical specifications and recommended applications for each of these in-stream formats:
| Ad Format | Maximum Duration | Skippable? | Primary Campaign Objective | Compatible Campaign Types |
|---|---|---|---|---|
| Skippable In-Stream | No strict limit (90s recommended) | Yes (after 5 seconds) | Direct response, leads, sales | Demand Gen, Performance Max, Video Reach, Video View |
| Non-Skippable In-Stream | Up to 30 seconds (15s standard; up to 30s on connected TV) | No | Brand awareness, reach | Video Reach campaigns |
| Bumper Ads | 6 seconds | No | High-frequency brand awareness | Video Reach campaigns |
A skippable in-stream ad is a video ad that plays before, during, or after other videos on YouTube and can be skipped after 5 seconds. Because viewers can skip the ad if they are uninterested, this format is highly cost-effective and is the standard choice for direct-response marketing. Before scripting your next campaign, analyzing successful YouTube ad examples will help you understand how to capture attention in the critical first five seconds before the skip button becomes active.
A non-skippable in-stream ad is a video ad that plays before or during content and cannot be bypassed. Standard non-skippable ads run between 7 and 15 seconds, while 30-second non-skippable ads are available primarily for connected TV (CTV) placements. Due to their intrusive nature, they should be used with specific target audiences, primarily for brand recall or highly targeted remarketing lists rather than general cold traffic.
A bumper ad is a 6-second non-skippable video ad designed for broad, high-frequency reach. These are typically reserved for large enterprises with substantial branding budgets, as 6 seconds is rarely sufficient to explain a complex value proposition or drive direct conversions.
Frequently Asked Questions
What is the difference between Discovery ads and In-feed ads on YouTube?
"In-feed ads" is the current official name used by Google for what was previously called "Discovery ads." The functionality remains identical, displaying as a clickable thumbnail and headline on the YouTube homepage, search results, and related video feeds.
Can you run YouTube Shorts ads on desktop devices?
While YouTube Shorts can technically be viewed on desktop, Shorts ads are specifically optimized for vertical, mobile-first viewing. Advertisers should exclude desktop devices from Shorts-specific campaigns to prevent poor user experience and inefficient budget allocation.
What is the recommended video length for a skippable in-stream ad?
While Google does not enforce a strict upper limit for skippable in-stream ads, keeping the video length under 1 minute and 30 seconds (90 seconds) is highly recommended. This duration provides enough time to establish a hook, explain a value proposition, and deliver a call-to-action without losing viewer interest.
How long can a non-skippable in-stream ad be?
A standard non-skippable in-stream ad runs between 7 and 15 seconds and can serve across devices. A longer 30-second non-skippable format (16–30 seconds) is also available, but it is shown primarily on connected TV (CTV) placements rather than on mobile or desktop.
Which YouTube ad format is best for direct response and sales?
Skippable in-stream ads are the most effective format for direct response and sales. They allow advertisers to deliver a comprehensive pitch, only charge the advertiser when a viewer watches past 30 seconds (or the full ad if it is shorter, or interacts with it), and integrate with conversion-focused campaign types like Demand Gen and Performance Max.