Cinematic AI Ads with Nano Banana Pro: A Complete 4-Step Guide

Until last week, AI video looked like AI video. It was glitchy, inconsistent, and weird.

Then Google dropped Nano Banana Pro.

Now, you can create cinematic, brand-quality commercials from scratch—without a camera, a crew, or a marketing degree. All you need is the right workflow.

Here is the exact 4-step process to go from a blank page to a finished ad, using nothing but prompts.

Step 1: Storyboarding with AI

Before you generate a single pixel, you need a plan. You cannot just “wing it” with video generation; that’s how you burn through credits.

Use a chatbot (like ChatGPT, Claude, or Gemini) to act as your Director.

• The Goal: Define the overarching story and break it down into discrete scenes (e.g., 8 separate shots).
• The Prompt: “Act as a film director. Create a storyboard for a 30-second high-energy commercial for [Product]. Break it down into 8 specific scenes with visual descriptions for each.”

Don’t be a slave to the AI’s output. Use it to get the gears turning. For a sunglasses brand, maybe you want a “Mad Max” desert vibe. Define Shot 1 (Heatwaves rising), Shot 2 (Close up on product), Shot 3 (Action shot).

Step 2: The “Seed Image” Strategy

This is the most critical step. Video models are chaotic; they need a strong anchor. We don’t generate video from text; we generate video from Images.

Go to Nano Banana Pro (or your image generator of choice) and create the “First Frame” for every single scene in your storyboard.

• The Workflow:
  1. Generate Variations: Ask for 4-5 variations of Scene 1. Pick the best one.
  2. The Consistency Hack: For Scene 2, you must reference Scene 1.
• Prompt: “Dramatic side profile of the rider from Image 1. Use the same lighting, style, and aesthetic.”
• Repeat: Do this for all 8 scenes.

If you skip this and try to generate video directly from text, your character will look different in every shot. The images must match before they move.

Step 3: Image-to-Video Generation

Now we bring the still images to life.

Take your “Seed Images” from Step 2 and feed them into a video model like Veo 3.1 or Runway Gen-3.

• The Prompt: Describe the motion, not the scene. The AI already sees the scene. Tell it how to move.
  • Example: “Camera slowly zooms in on the helmet. Dust blows across the screen.”
• The “One Second” Rule: The AI might give you an 8-second clip. The first 3 seconds might be perfect, and the last 5 seconds might be a glitchy nightmare where the helmet turns into a toaster. That is fine. You only need the 2 seconds of gold.

Expect to run each scene 3-4 times to get the movement right.

Step 4: The Edit (Stitch & Sync)

You have 8 clips. Now you need to assemble them. You can use any editor (CapCut, Premiere, DaVinci).

• The Secret Sauce: Audio dictates the cut.
  1. Find a high-energy track with a strong beat.
  2. Drag your clips onto the timeline.
  3. Sync the cuts to the beat. Every time the drum hits, switch to the next scene.

This simple trick tricks the brain into thinking the video is higher quality than it is. It adds rhythm and professionalism instantly.

The Verdict: Can You Automate This?

Technically? Yes. Should you? No.

You can build workflows to automate the prompting, but you should never automate the Creative Choice.

• Automate: Generating 5 image variations.
• Don’t Automate: Choosing which image looks “cool.”

AI is a tool for generation, but the “Director’s Eye”—the ability to look at a shot and say “That’s the one”—is still 100% human.