Performance Max Ads and the Crop You Never Approved

What Google Actually Announced on 17 August#

A fox does not flinch when the wind turns, it reads the change and moves with it. Advertisers running performance max ads got no such grace period. On 17 August 2026, Google told Performance Max advertisers that generative AI would start reshaping their video assets automatically: cropping the horizontal footage already live in campaigns into vertical and square cuts nobody on the account team drew, sketched or signed off. The notice landed the way most of Google's biggest defaults do lately, quietly, as an in-account message rather than a headline, first surfaced publicly by PPC practitioner Menachem Ani of JXT Group and reported soon after by Search Engine Land.

Here is the shape of it, stated plainly, because a change this size deserves plain language rather than a press release. Google will use generative AI to auto-generate the missing aspect-ratio versions of video assets already uploaded to Performance Max campaigns, filling gaps in a horizontal source with cut-for-purpose 9:16 and 1:1 crops. The feature applies to video that is already approved and already live, and, this is the detail that should make any brand-safety brief sit up straight, the reframed cuts do not go through a second creative review before they start serving. What passed once passes forever, in whatever shape the model decides to give it next.

The default sits ON, not off. Opting out is the advertiser's job, not Google's, and the window to do it closes on 4 September 2026, either through your Google account management team or via the Google Ads opt-out settings inside Campaign settings. Miss it, and every horizontal performance max ads video sitting in a live campaign becomes a candidate for an automatic recut, no further sign-off required. PPC News Feed corroborated the mechanism, the deadline and the opt-out route within two days of the original report, and if that opt-out-by-default pattern sounds familiar, it echoes the same move Google made when it relabelled customer match lists without asking.

The paper trail Google did not leave#

Track the trail carefully here, because there is a gap in it worth naming out loud. Google has not published a dedicated help-centre page or blog post specifically announcing the 4 September deadline. What exists is standing documentation of the underlying mechanism, the general creative-automation controls that predate this specific news cycle, via Google Ads Help, not a formal public notice of this particular cutoff. Relevant Audience made the same point on 18 August: the in-account notice is the primary document, and the trade press is doing the work of turning a quiet account message into something advertisers can actually plan around.

Not the season's first silent switch#

This is not Performance Max's first forced default this year, and the pattern is the story as much as any single feature. Google rolled out an AI voice-over feature for Performance Max video back in March, generating spoken audio from an advertiser's own headlines and descriptions and layering it onto silent or music-only footage, again opt-out rather than opt-in, again with its own hard deadline, reported at the time by PPC Land.

That opt-out closed on 20 March 2026. This one closes on 4 September. Put the two dates side by side and the cadence, not the individual feature, is what should worry a brand that likes to know what its own creative looks like from one quarter to the next.

Read it the way you would read fox prints in wet ground: the gap between the two opt-outs is 168 days, roughly five and a half months, which means Performance Max has now forced two separate generative-AI defaults onto video assets inside a single year. Neither swap needed your signature. Both needed your attention.

Where Performance Max Sits Against Search#

Before the fix, the frame. To weigh what a forced video recut actually costs you, it helps to place performance max ads in context against the campaign type most advertisers cut their teeth on. A Search campaign is keyword-led and text-first: it lives inside the results page, bidding on intent a searcher has already typed. Performance Max is a different animal entirely, a single goal-based campaign that reaches across the full Google Ads inventory, YouTube, Display, Search, Discover, Gmail and Maps, and it “complements your keyword-based Search campaigns” rather than replacing them.

The trade Performance Max always asked you to make#

That difference is exactly why video automation lands so much harder here. A Search ad has no creative to crop. Performance Max carries video into placements a Search campaign never touches, YouTube Shorts, in-stream, Discover feeds, so when the question is performance max campaign vs search, the honest answer is that Search never put your brand's visual identity at risk in the first place, and Performance Max always did, automation or not.

Reach is the whole pitch of Performance Max, and reach is genuinely valuable, folkfox runs it for clients precisely because it converts. folkfox builds and audits PPC campaigns that treat that exposure as the cost of the reach, not a surprise buried in a settings menu, and the same discipline carries into paid social, where vertical video automation has been quietly reshaping creative for longer than most brands realise.

The trade-off has always been control: you hand Google a pool of assets and a goal, and the system decides which combination serves where. Auto-generated aspect ratios simply extend that trade a step further, into the shape of the footage itself, echoing the same reach-versus-control call we mapped when Local Services Ads moved into Performance Max.

How the AI Generated Video Ads Actually Get Made#

Open the bonnet and the mechanism is genuinely clever, which is exactly why it deserves scrutiny rather than blind trust. Google's standing documentation on creative video automation for Performance Max describes a system that “detects scenes and elements like faces, objects, logos, text, and motion” to convert a horizontal source into square and vertical cuts for performance max ads video. It is not a blunt centre-crop, it is a model reading your footage the way a fox reads a hedgerow, working out what matters and what it can afford to leave in the brush.

The wider automation stack folds two things into one setting: video enhancements, which reshape and re-time existing footage, and fully auto-generated video ads, assembled from images and product feed when no video exists at all. Google's own documentation for Performance Max video automation confirms both live under the same toggle, and that the system “automatically create[s] different versions of your existing videos to improve campaign performance”, including vertical and square assets “from your original horizontal video”.

Here is the wrinkle worth sitting with. That same documentation states plainly that Google will “conduct multiple reviews to ensure that all enhanced videos meet high quality standards” before an enhanced asset goes live, standard practice for the video-enhancement toggle that has existed for a while.

The specific reframing rollout announced on 17 August applies that same automated logic to assets already cleared, already trusted, already serving, and does so without sending the new crop back through that review queue. The quality bar that vetted the original does not automatically revet what the model cuts from it, a pattern we have tracked since Performance Max negative keyword coverage first showed how little visibility advertisers get into what the system actually does.

That estimate comes from practitioner analysis of the rollout rather than a Google-published figure, and it is worth treating as directional rather than exact, but the geometry behind it is not really in dispute. Google's own video asset guidance confirms the review checks it runs for precisely this failure mode, flagging videos for “cropped text or logos, poor focus, loss of the original message and aesthetic intent... or legal disclaimer cut off”. Google already knows the edges are where things go wrong. The question the 4 September deadline poses is whether you trust the model to catch every instance of that on assets it no longer has to show you first.

Why the edges carry the risk#

Whatever text sits closest to the frame border in your original footage, a logo lockup in the corner, a lower-third disclaimer, regulatory small print, sits closest to the cut line when the AI decides how much horizontal space to sacrifice. A quiet crop is not a dramatic failure. It is a slow leak of brand control that nobody notices until a client asks why the logo looks clipped in a vertical placement nobody reviewed.

What to Check in Your Google Ads Video Requirements Before 4 September#

Start with the boring inventory, because the boring inventory is what actually protects you. Google's guidance on Performance Max specs and format requirements confirms all three orientations, horizontal, square and vertical, and allows up to 15 uploaded videos per orientation. The core google ads video requirements have not changed with this rollout; what changed is who fills the gaps when your own upload library does not cover every shape.

Two other pieces of Google's own guidance are worth reading in full before the deadline, not skimming. the Google Ads Ad Strength guidance is blunt about the trade: upload your own video “in horizontal, square, and vertical orientations” and you earn the top Ad Strength tier while starving the auto-generation pipeline of gaps to fill. Skip an orientation and the system fills it for you, opt-out setting or not, because a missing asset and an unwanted recut are solved by the same button.

The five-minute audit worth doing this week#

Pull up every performance max ads campaign carrying video and ask four questions. Do you have a custom asset in all three orientations, or is there a gap the AI is already quietly filling? Does any orientation carry a logo, disclaimer or regulated claim sitting close to the frame edge, the exact zone the Google video asset review process already flags for “cropped text or logos... or legal disclaimer cut off”?

Has anyone actually opened the Assets section in the last month to check what a machine has already generated on your behalf? And, the one people skip, does your account still show the automation toggle where you left it, or has a fresh feature rollout quietly turned it back on, the same silent-switch scrutiny we applied to the AI Max migration?

Deciding Whether to Opt Out, and Living With It Either Way#

There is no universally correct answer here, whatever a confident LinkedIn post tells you this week. Do not prowl into a decision without weighing reach against control deliberately. A brand running unregulated lifestyle creative with no legally required copy anywhere near the frame edge probably loses very little by leaving the default on and letting performance max ads chase reach across every shape it can generate. A regulated advertiser, financial services, healthcare, anything carrying a disclaimer that has to survive the crop, has a much shorter runway to make a considered call before 4 September closes it.

folkfox treats this the way we treat every Performance Max default: read the mechanism before reacting to the headline, then decide deliberately rather than by default. That is the same discipline behind our wider SEO and GEO work, where being the cited source beats being the paraphrased one, and it applies just as directly here: being the advertiser who chose the crop beats being the advertiser who discovered it.

Set a calendar reminder for 4 September regardless of which way you land, because the setting does not lock you out of future control, only past service. Whatever crop the model chooses before the deadline keeps serving after it, opt-out or not. The fox that watches the trail early is the fox that does not get outfoxed by its own account settings.

Frequently asked questions#