Generate images and convert to video using Flux, Kraken & Runway

(Image Generation → Hosting → Video Generation) This workflow is designed for creators, automation enthusiasts, and indie hackers who want to generate image-based videos automatically using AI tools — at a low cost. --- ⚙️ Workflow Overview This automation performs the following steps: 1. Trigger (Schedule or manual) 2. Generate an image using Flux (choose between two APIs) 3. Upload the image to Kraken.io to get a public URL 4. Send the image to Runway ML (choose between two APIs) to generate a video 5. Receive the video as a URL — ready for posting, download, or further automation --- 🛠️ Step-by-Step Setup 🖼️ Flux (Image Generation) You can use either of the following providers: Option 1: Flux by BlackForest Labs (Direct API) 🔑 Get your API key here: Paste your API key in the HTTP Request node named Flux (Blackforest) You can customize prompts or styles inside the JSON body Option 2: Flux via RapidAPI 🔑 Subscribe and get your key here: Enter your RapidAPI key in the X-RapidAPI-Key header Optional: tweak prompts, style, or resolution inside the JSON body --- 🐙 Kraken.io (Hosting the Image Publicly) Runway ML requires the image to be publicly accessible. We use Kraken.io to host the generated image and return a public URL. 🔑 Get your API credentials: Setup: 1. Copy your API Key and API Secret 2. Open the Kraken Upload node in n8n 3. Replace placeholders with your credentials 4. The node uploads your image and gives back a public image URL for Runway to use --- 🎬 RunwayML (Video Generation) You also have two options here: Option 1: Runway Official API 🔑 Get your credentials at: Use the public image URL from Kraken in the JSON body Paste your Bearer token in the Authorization header Customize other settings like video length, style, FPS, etc. Option 2: Runway via RapidAPI 🔑 Subscribe and get your key here: Paste your RapidAPI key in the request header Customize prompt and generation options in the body Use the Kraken-generated image URL as the input source --- 📤 What to Do with the Video Once the video is generated, you’ll get a direct video URL. You can: Save it to Google Sheets or Notion Send it via email Trigger a YouTube upload automation Or download manually for editing and reposting --- 💡 Optional Tips & Notes You can schedule this workflow to generate AI videos daily or weekly Combine it with a Google Sheet of prompts for bulk automation Try using a consistent visual style or theme for better branding This workflow is lightweight and affordable — perfect for indie projects or experimental content generation Great for shorts, quote visuals, music loops, AI art promos, etc. --- 🔗 Resources Flux (Blackforest) Docs Flux on RapidAPI RunwayML Official Docs Runway on RapidAPI Kraken.io API Dashboard --- 🙋 Need Help? Feel free to reach out: 🐦 Twitter: @juppfy 📧 Email: joseph@uppfy.com If you’d like to hire me for custom n8n workflows or product automations, don’t hesitate to get in touch.