Make a 45-second animated explainer ad with Claude Code — demo preview
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Make a 45-second animated explainer ad with Claude Code

A seven-step workflow for turning a concept brief into a finished animated explainer ad with Claude Code, image models and ffmpeg.

Gooseworks
Gooseworks · 2 min read

You can make a 45-second animated explainer ad with Claude Code and a handful of skills. No video editor is involved. The first one took about 30 minutes, because the skills for each step already existed.

The workflow below is the one we used for a skincare brand's explainer. You write the brief and review the output. The agent does the technical work.

What you need

  • Claude Code
  • Skills for each stage (storyboard, keyframes, animation, stitching). The Gooseworks skills cover these: npx gooseworks install --all
  • Access to an image model, a video model and a voice model
  • ffmpeg on your computer

The steps

1. Write the concept brief

Handwrite a short brief, then iterate on it with the agent. It covers the concept, the characters, the visual style and the script. Ask the agent to collect raw materials too: brand context, product images and the end card.

2. Prepare a moodboard

Once the script looks right, have the agent generate:

  • Character reference images
  • Voiceover samples for each character or narrator
  • A storyboard, scene by scene, as a grid
  • A few keyframe scenes

3. Generate a keyframe for every scene

The agent uses the character references from step 2 so each scene looks like the same cast. Review this step properly. In our run we skipped a second round and saw some character drift and a weak product diagram. Fix those here, because every later step builds on the keyframes.

4. Animate keyframes into clips

Start with two to four representative scenes. If the preview looks right, generate the rest. This keeps a bad style choice from costing you the whole video.

5. Stitch the video

The agent assembles the clips with hard cuts, then adds:

  • A music score and sound effects
  • Clips synced to the voiceover
  • Captions
  • Timing and pacing fixes

6. Watch the final cut and review it

Have the agent watch the video twice. First as a video editor, looking for technical errors such as mismatched voiceover and visuals or AI artifacts. Then as your ideal customer. The agent catches more than you will on a first pass, and it fixes what it finds.

7. Capture what you learned

Ask the agent to extract the lessons from the run and update the skills. This is what makes the second video faster than the first. Skills are code, so every correction you make once stays fixed.

What to check before you run it

  • Character consistency across scenes
  • Product visuals match the real product
  • Voiceover timing against the captions
  • The end card shows the correct logo and offer

Try it

Goose Ads and the video skills are open to try at gooseworks.ai/ads. If you would rather not run the workflow yourself, ask Goose for a video ad and pick a format.

Keep reading

Skills used in this post

Video Production Harness

Full video production sequence with script review, actual ingredient choices, controlled generation, editing, evidence-based quality review, polish, captions and delivery. A host binding supplies project storage, authentic approvals, provider access and billing.

Write Video Ad Script

Write the words of a short-form video ad (voiceover, dialogue, chat bubbles, on-screen lines) the way performance creative teams do instead of from a blank page. Builds the script from the buyers' own words, the beat sheet of an ad that already works and three deliberately different angles, filters them with a rule check and a second non-Claude model, and takes the strongest into the review with the other two as one-line swaps. Use it in every video ad run before any paid step, and whenever the user asks to write, rewrite or improve a video ad script or says a script sounds generic or AI-written.

Render Whiteboard Explainer

Assemble a whiteboard explainer video ad from a beats file — a narrator explains one idea while a real whiteboard fills up in black marker, with a hand-lettered title, bulleted rows down the left, a drawing filling the right, and a payoff that letters the closing line and rings the claim. The board is a PHOTOGRAPH and the ink is multiplied onto it, so the surface sheen and window light come through the strokes; the drawings are generated as line art and traced to ordered strokes, then revealed in drawing order on the word they belong to. The layout is SOLVED from the beats, never hand-placed. FREE assembly (Pillow plus ffmpeg) apart from one board photo and one drawing per subject, both one-time per brand. Use for the whiteboard format.