Greenscreen-Style Ads with AI: Step-by-Step

To make a greenscreen-style ad with AI, connect Polaris to Claude, then ask Claude in chat to generate a greenscreen-reaction-style ad from your product photo or script. Pick the model, background approach, and captions from tappable option cards, and the finished clip renders live in the conversation.

Why the greenscreen format still works

Greenscreen-style ads mimic the familiar "reacting to a screenshot or clip" format popular on short-form video: an actor talks directly to camera with a reference image or text behind them. It reads as commentary rather than an ad, which is exactly why it holds attention longer than a straight product shot.

Step-by-step: building the ad

1. Connect the MCP once. Add polarisugc.com/api/mcp as a connector in Claude and authorize it.
2. Attach your product photo and any reference image or screenshot. The reference is what appears behind the actor, greenscreen-style.
3. Ask Claude to build it. For example, "make a greenscreen-style ad reacting to this image, using this script." Claude replies with tappable option cards for anything you haven't specified: talking-actor model (Omni), other video models (Kling 3.0, Veo 3.1 Quality/Fast, Seedance 2.0), voice, and captions.
4. Pick settings from the cards. Since this format is actor-led, Omni is a natural fit for a scripted talking delivery.
5. Watch the live panel. Progress and the finished ad render directly in the conversation, typically in 20-180 seconds.
6. Generate a few delivery variants. Different tones of the same script (excited, skeptical-then-convinced, matter-of-fact) can render in parallel and download as a ZIP.
7. Add burned-in captions. Standard for this format since much of short-form video is watched muted.

Pro tips

• Write the script as if reacting to the reference image in real time — short reactive lines outperform a formal pitch.
• Run Copy Judge on the script before rendering to tighten the hook and flag weak lines.
• Test at least two delivery tones per script; the same words land very differently depending on energy.
• Use Recreate to reuse a delivery style that worked, swapped onto a new product or reference image.

Honest caveats

A greenscreen-style ad delivers your script convincingly, but it's still a script — it won't clone a named real person's voice or likeness, and it needs testing like any other creative rather than being assumed to work. If your product is in a regulated category, keep the reaction lines compliant — no disease, cure, or guaranteed-result claims, even in a casual reaction-video tone.

Where the web app fits

The web app exists as a secondary surface for managing a library of renders; the primary workflow is chatting with Claude directly after adding the connector, covered in this guide. Compare formats on the UGC ads page and see plans on pricing.