AI Video for Ads and Landing Pages: Specs, Labels, Tracking

If you plan to use an AI-made video in ads or on a landing page, deciding three things before you commission it cuts down on remakes and rejected uploads: where the ads will run, how you will disclose that the video is AI-generated, and what you will measure as a result. Recommended aspect ratios and lengths differ by platform, and so do the rules for labeling AI-generated content.

This post sorts the questions that tend to come up before ordering into six topics and summarizes what we could confirm on each company's official help pages and Japanese government sites as of October 14, 2026. Specs change often, so check the preview in each ad manager before you upload.

The same video has a different recommended aspect ratio depending on where it runs. Official help pages said the following as of October 14, 2026.

Recommended length also varies by platform and ad type. For YouTube Shorts ads, under 60 seconds is recommended, and 10 to 30 seconds if the goal is to drive action. YouTube bumper ads are 6 seconds. TikTok advises catching interest in the first 6 seconds and showing what you are offering within 3 seconds.

If you receive the file as MP4 or MOV, you can upload it to Meta, TikTok and Google. The size limit is 4 GB on Meta and 500 MB or less on TikTok.

In portrait video, the account name, caption and buttons overlap the top and bottom of the screen. For Reels ads, Meta advises keeping text and logos out of the top 14%, the bottom 35% and 6% on each side. Once the platforms are decided, the efficient way to order is to request only the ratios you need as deliverables.

Among the platforms we checked, none bans using AI-made video in ads as such. What differs is how they handle disclosure that the content is AI-generated.

We could not find a general legal requirement in Japan to label ads as AI-generated. We also found nothing stating clearly that there is no such requirement. When in doubt, adding a label makes it easier to explain your choice to both the platform's ad review and your viewers.

Ad review problems tend to come from what the ad says rather than whether AI was used. Exaggerated effects, misleading before-and-after comparisons and anything that makes it look as if a celebrity endorses the product are prohibited under every platform's policies.

A video made with generative AI can still infringe copyright if it resembles an existing work. According to the guidance from Japan's Agency for Cultural Affairs, infringement is judged by similarity to the existing work and whether the new work was based on it (reliance). Putting a work's title or a character's name in the prompt makes reliance more likely to be recognized, so the guidance recommends checking for similar works before use and keeping a record of the prompts.

Also avoid faces and voices that resemble real people. The Supreme Court of Japan has named using a person's likeness in advertising as one of the typical cases of exploiting their power to attract customers without permission. We found no ruling on how this applies to people made to look alike with AI.

On claims, watch Japan's Act against Unjustifiable Premiums and Misleading Representations, the main law on misleading advertising. Representations that make quality look better than it is (misleading as to quality) or price and terms look more favorable than they are (misleading as to terms) are regulated even when unintentional. Since October 1, 2023, ads that are hard to recognize as ads (stealth marketing) also count as misleading representations. When running testimonial-style videos on social media, make it clear that they are ads.

Adding video to a landing page can slow down how fast the page loads. web.dev, Google's site for developers, recommends the following.

There is no official guideline on how many MB a file should be. If the page is an ad landing page, check that the first screen appears quickly on a mobile connection before you start running ads.

To compare how ads and landing pages perform, tracking has to be set up before the ads run. Deciding the following also lets you compare the response to each version of the video.

UTM parameter values are case-sensitive, so keeping them all lowercase keeps your reports clean. If you start running ads without deciding who owns tracking, you will not be able to compare later which video drew the response.

FablessBridge's base plan covers one 60 to 90 second video delivered in either landscape or portrait. A 15-second video is $500 and a 30-second video is $700. Delivering both landscape and portrait adds $100 per video, and ordering three or more videos at once takes 10% off the total (as of October 2026, excl. tax). Landing pages featuring the video and ad delivery and management are quoted separately as custom work. We support ads on Google, YouTube, Instagram, Facebook, TikTok, Pinterest, ChatGPT and X, and ad spend is billed separately.

When you get in touch, tell us where the ads will run, the ratios and lengths you need, and what you want to measure as a result, and we will propose the deliverables you need. We do not guarantee reach, views or sales growth. Because the videos include AI-generated material, we ask that your legal team also review them before publication.