Generate & publish professional video ads with Veo 3, Gemini & Creatomate

Professional AI-Powered Ad Generator Creating high-quality video ads has traditionally been one of the biggest challenges for small businesses and marketers. It usually requires a production team, editing software, and days of effort before anything is ready to publish. That makes consistency almost impossible — especially if you want to publish new ads every day. This workflow changes the process entirely. Built in n8n, the Professional AI-Powered Ad Generator combines AI and automation to handle everything from script creation to video rendering and social media publishing. The goal is simple: allow you to create and distribute short, engaging video ads in minutes, without relying on a stu

Help me set up the n8n workflow "Generate & publish professional video ads with Veo 3, Gemini & Creatomate" (https://n8n.io/workflows/8263). It uses: HTTP Request, Code, Basic LLM Chain, OpenAI Chat Model, Structured Output Parser, JWT, Google Gemini Chat Model. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.