What video length works best for mobile ads?

Ad Creative Types

What is Video Ads?

Video ads are the dominant format in mobile advertising, using motion, sound, and narrative to communicate product value within 6–60 seconds.

Video Ads: Full Definition

Video ads are linear video-based advertisements served within mobile apps and social feeds. They range from 6-second bumpers (unskippable awareness) to 15–30 second direct-response videos optimized for install or purchase, to longer-form 60-second narrative ads for brand building.

In mobile UA, the most commonly used video formats are 15-second and 30-second vertical video (9:16 aspect ratio) optimized for feed placements on TikTok, Instagram, and Meta. The first 3–5 seconds, the hook, are disproportionately important because users can scroll past at any point.

Video ad production ranges from high-budget studio shoots to smartphone-shot UGC content. The format that performs best depends on the platform (TikTok rewards authenticity; YouTube can support more polished creative), the audience, and the product category. In mobile gaming, gameplay footage is often the highest-converting video content.

Why Video Ads matters

Video is the primary creative canvas for mobile user acquisition. It's the only format that can convey motion, gameplay, emotion, and narrative in a few seconds, all of which are critical for communicating complex product value quickly. For mobile games specifically, seeing is believing: video ads that show authentic gameplay dramatically outperform abstract concept ads.

Frequently asked questions

For direct-response (install, purchase), 15–20 seconds typically outperforms 30+ seconds because it maintains completion rate while delivering the hook, product showcase, and CTA. For brand awareness, 30-second narrative formats can work well. TikTok specifically has shown strong performance with 9–15 second videos that hook and deliver immediately.

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