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Cortexa Ground Truth
Explainer5 min readBy Joe Coffman
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AI video is ready for the storyboard, not the shoot.

AI can generate a cinematic clip with sound in minutes. That's a fast way to show an idea, and a risky way to ship a finished ad.


“Can we just make the ad with AI now?” Every agency serving a tech brand is fielding that question this year. The tools are real, and they are fast. Whether the result can carry a client's name depends almost entirely on where in the process you point them.

What can AI video do today?

A handful of models (Google's Veo, ByteDance's Seedance, Alibaba's Wan, Runway, Kling and a few others) now turn a written prompt into moving footage. Google says Veo can generate cinematic video with audio1 and generate outputs in 1080p and 4K1. The clips are still short, but less short than they were: ByteDance now advertises a native 30-second single shot2, where a few seconds was the ceiling a year ago. Some ship as open weights rather than as a rented API. Alibaba made its video models free to download3, which puts rights and procurement on a different footing from the quality question. The jump in the last year is easy to see: motion is smoother, light reads like film, and the picture now arrives with sound. It is the same leap the multimodal brief4 described, landing in video.

AI is genuinely fast at blocking out the idea. What carries a client's name is still finished by a crew.
Where AI video earns its place today

What's Real?

The “so what” for anyone serving tech clients

  • Sell it as pre-production, not the final cut. Put AI video in the pitch and the test shots, where a fast, cheap look wins the room and nobody airs the rough version. That is where a client feels the speed without wearing the risk.
  • Keep a person on every frame that ships. The pattern that works is AI for the concept and the variants, a human crew for the finished spot. Budget the human finish in from the start; the savings are still real, and so is the backlash when you skip it. It is the same gap the demo-to-production brief8 named: a great sample is not a shipped campaign.
  • Settle disclosure up front. Agree who labels the AI, and how, before the work starts. That expectation is only getting firmer, and “we'll sort it later” is how a brand ends up explaining itself in public.

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