Google Ads Now Auto-Generates Missing Video Formats for Performance Max
Google's latest AI upgrade stretches your existing video ads into vertical and square layouts automatically, reaching more placements without reshoot.
The 5-second version
- Google Ads now uses generative AI to resize Performance Max videos into missing aspect ratios (vertical, square, horizontal) from a single source.
- The tool extends reach across more inventory and placements without requiring you to film multiple versions.
- Advertisers can opt out if they prefer manual control over how their creative appears.
Google is rolling out a generative AI upgrade to Performance Max video ads that automatically resizes your existing creative into missing aspect ratios. The tool converts a single horizontal video into vertical and square formats, filling placements across YouTube, Google Network, and other inventory without requiring reshoot or manual creation.
The feature builds on Google's earlier video enhancement tools, which already handle basic format conversion. This upgrade uses AI to extend and adapt video content, not just crop or stretch it. The stated goal: maximize reach while keeping viewers engaged across different placements.
What This Means for Your Ad Spend
Performance Max campaigns already automate bid and placement, so adding AI-generated aspect ratios removes another friction point. Instead of uploading multiple video versions yourself, Google now does it. That means faster campaign setup and wider inventory access from a single source file.
The catch: AI resizing works best when your original video is shot with composition in mind. Horizontal videos that center subjects and avoid extreme letterboxing resize into vertical format more naturally. Videos with crucial action on the edges may lose impact when adapted.
You Can Turn It Off
Google lets advertisers disable the generative resizing feature if you want full control. Many brands with strict creative guidelines or premium positioning may choose manual uploads only. If you trust Google's output quality for your category, leaving it on expands reach with zero effort.
The feature is now available in Google Ads, with rollout continuing through August 2026. If you use Performance Max, check your video asset settings to see the resizing control and decide whether to opt in or stay hands-on.
Questions owners ask
Do I have to use this AI resizing, or can I stick with my original video?
You can opt out. Google lets advertisers disable generative resizing if you want to control exactly how your video appears across different placements. The feature is on by default for Performance Max, but the control is yours.
Will the AI-stretched versions look cheap or distorted?
Google says the goal is to improve viewing experience, not degrade it. The tool extends existing videos into missing formats rather than cropping or letterboxing, but the quality depends on your source video resolution and composition. Vertical-friendly horizontal videos tend to resize better than heavily framed shots.
How does this save me money?
You film one video, and it can now run on vertical placements (Reels, TikTok-like inventory) and square formats (Stories, feeds) without extra production. More placements per dollar means lower cost-per-reach if the resized creative converts as well as the original.
Should I change how I shoot videos now that Google does this resizing?
Shoot with square-friendly framing and center your subject when possible. Avoid extreme letterboxing or wide-angle shots that lose meaning when cropped vertically. Google's AI handles basic resizing, but smarter composition on your end improves output quality.
