How I Built My Own AI Video Generator in Google Flow (Bugs Included)

Tired of your AI characters shifting faces, outfits, and backgrounds every time you generate a new clip? In this tutorial, we tackle character and scene consistency head-on by building a custom AI video generator inside Google Flow from scratch. This isn’t a sanitized demo where everything works on the first try. We build live dealing with prompt drift, image formatting issues, and troubleshooting when character resemblance fails so you can see exactly how to fix it in your own workflow. 📌 What You’ll Learn: • Generating base character sheets and persistent environment references in Gemini • Setting up and customizing a Tool inside Google Flow • Automating shot-by-shot script breakdowns and batch rendering • Diagnosing and fixing prompt drift and character mismatch issues • Export settings (upscaling to 1080p) and practical credit cost breakdowns (Omni model) ⏱️ Chapters: 0:00 The Consistency Problem in AI Video 0:30 Prepping Reference Images & Sets in Gemini 2:01 Building the Custom Tool in Google Flow 3:14 First Test Run 3:30 Setup Batch Generation Of Multiple Videos 4:20 Troubleshooting Face Drift & Prompt Issues 7:55 Switching Environments while Keeping Consistency 9:15 Post-Production & Upscaling Video 9:40 How Much AI Video Generation Costs? 10:36 Final Video Output 11:08 Outro 💬 Let me know what you think of this workflow in the comments below! Tags: Google Flow, Google Flow AI, AI video generator, AI video tutorial, AI character consistency, Consistent AI characters, Google Gemini, Google Gemini AI, Google Flow tool builder, AI filmmaking, AI video workflow, fix AI video consistency, AI character drift, batch AI video generation, AI video prompt engineering, custom AI video tool, The Paper Terminal