Google Is Adding AI Text to Your Demand Gen Videos by Default: What Ecommerce Brands Must Check Right Now

On October 9, 2026, Google Ads introduced a new “Overlay on videos” asset optimization setting for Demand Gen campaigns, and it is turned on by default for every active campaign. For ecommerce brands running Demand Gen, this means Google is now automatically layering AI-generated text from your existing copy on top of your video creative across YouTube, Discover, and Gmail, and with 85% of viewers watching videos without sound, those overlays are appearing on impressions right now.

What Does Google’s “Overlay on Videos” Setting Mean for Your Demand Gen Campaigns?

Google’s system pulls from your existing text assets, the headline and description copy already attached to your Demand Gen campaign, and places them as overlays directly on your video ads during delivery. Any Demand Gen campaign that was live on October 9 has this feature active unless you have manually navigated to your asset optimization settings and disabled it. The setting is labeled “new” inside the interface and sits in the Video section of asset optimization alongside the existing “Shorter videos” and “Resized videos” options.

How Does the “Overlay on Videos” Feature Work in Demand Gen Campaigns?

Google’s AI selects which text assets to display, determines their placement on the video frame, and decides when overlays appear versus when a clean video version runs. There is no preview before overlays go live, no approval step, and no notification that the setting activated. The system is designed to reinforce key messages for viewers who are watching without audio, a behavior that accounts for a substantial share of video consumption across Google’s Discover and Gmail placements. Campaigns serving audiences in the European Union, India, or New York state will also see an “edited with AI” label applied automatically on every impression where the overlay runs, in compliance with Google’s disclosure policy for AI-modified creative.

Why Does a Default-ON Overlay Setting Create a Brand Risk for Ecommerce Advertisers?

Demand Gen campaigns are typically where ecommerce brands invest in high-production video creative designed to create a specific brand impression during the discovery phase. Those videos often include on-screen text, branded typography, timed calls to action, and carefully designed product shots. An AI-generated text overlay placed by Google can cover key product visuals, duplicate existing on-screen copy, or introduce headline phrasing that does not match the brand voice in the video itself.

The default-ON behavior means this activated without requiring any advertiser action or awareness. Every campaign running on October 9 was enrolled automatically. Ecommerce brands that run creative tests across multiple Demand Gen video assets will also find it harder to attribute performance differences cleanly, because two video variants may now be delivering with different AI-generated overlay text, adding a variable the test was not designed to measure.

This follows a pattern Google has applied to several features in 2026. The AI-generated Shopping ad descriptions in July 2026, the PMax AI video resizing in September 2026, and Demand Gen overlays in October 2026 all launched as default-ON settings that required advertisers to actively opt out. Tracking this pattern is part of managing your Google Ads account heading into BFCM. For the full list of Google Ads changes this year, see our full Google Ads 2026 update tracker.

What Should You Do Now with Google’s Demand Gen “Overlay on Videos” Update?

1. Open every active Demand Gen campaign in Google Ads. Navigate to campaign settings, then locate the “Asset optimization” section under creative. Look for the “Overlay on videos” toggle in the Video group. It will be marked as “new” if you have not interacted with it yet.
2. Decide whether to keep overlays on or disable them. If your Demand Gen videos already include branded on-screen text, timed calls to action, or design-heavy frames, disable the overlay immediately. If your videos use clean product visuals with minimal on-screen elements, the overlay may add value for viewers watching without sound. The decision depends on how your existing creative is constructed.
3. Use “Disable all” if you want full creative control across all video optimization features. Google provides a “Disable all” option in the Video section that simultaneously turns off Overlay on videos, Shorter videos, and Resized videos. If you want your videos served exactly as produced, this is the fastest single action to restore that control across every asset in the campaign.
4. Check AI label exposure if you run Demand Gen ads in the EU, India, or New York state. Any impression where Google applies the overlay in those regions will carry an “edited with AI” label automatically. If your compliance or legal team monitors AI disclosure labeling across ad formats, disabling the overlay removes the trigger for that label in those markets.
5. Pull asset-level reporting in two weeks if you leave overlays active. Demand Gen asset reports show performance by individual video and text asset. After two weeks of data, you will be able to compare click-through and conversion rates for campaigns with and without overlays. Use that data to make an informed call about whether to keep the feature on heading into your BFCM campaigns.

Related Reading

• Google AI Max Now Lets You Preview Generated Copy Before It Goes Live
• Google Is Auto-Resizing Your Performance Max Videos with AI
• CTC Google Ads Management for Ecommerce Brands

Frequently Asked Questions

Your Demand Gen campaigns are running with new AI behavior that was not there last week. The faster you review your asset optimization settings, the faster you can decide whether that change fits your brand heading into Q4. If you want a second opinion on your Demand Gen creative strategy before BFCM, talk to us.