Generate Videos from Images with Wan 2.2 I2V A14B AI Model

🌍 Overview

This workflow connects n8n with Replicate’s Wan-Video model to generate video content from an image + prompt.
It handles:

• 🔑 API authentication
• 📤 Sending a generation request
• ⏳ Polling until completion
• 📥 Returning a downloadable video link

🟢 Section 1: Start & Authentication

🔗 Nodes:
1️⃣ On clicking 'execute' (Manual Trigger)
▶️ Starts the workflow manually when you click Execute Workflow.

2️⃣ Set API Key
🔑 Stores your Replicate API Key securely inside n8n.

• Value: YOUR_REPLICATE_API_KEY

💡 Beginner Benefit:
✅ No need to hardcode API keys in every request
✅ Easy to swap keys for different accounts

🔵 Section 2: Send Video Generation Request

🔗 Nodes:
3️⃣ Create Prediction (HTTP Request)
📤 Sends a request to Replicate API → /v1/predictions

• Model: wan-video/wan-2.2-i2v-a14b

• Input Parameters:

  • 📝 prompt → your text description
  • 🖼️ image → input video/image URL
  • 🎲 seed → reproducibility
  • 🎞️ num_frames → 81 frames
  • ⏩ sample_shift → 5
  • ⚙️ sample_steps → 30
  • 🎬 frames_per_second → 16

4️⃣ Extract Prediction ID (Code)
🆔 Pulls out the prediction ID + status from Replicate’s response.
This ID is needed for polling until the video finishes generating.

💡 Beginner Benefit:
✅ Automates the API call to generate video
✅ Extracts ID → avoids manual copy-paste

🟣 Section 3: Polling & Status Check

🔗 Nodes:
5️⃣ Wait (2 sec)
⏳ Adds a short delay before checking progress.

• Prevents API spam

6️⃣ Check Prediction Status (HTTP Request)
🔄 Calls Replicate API → /v1/predictions/{id}

• Checks whether the video is still processing or finished

7️⃣ Check If Complete (IF Node)
❓ Compares status → succeeded or not

• ✅ If complete → goes to Process Result
• ❌ If not → loops back to Wait and tries again

💡 Beginner Benefit:
✅ Automatic re-checking → you don’t need to refresh manually
✅ Works until result is ready

🟡 Section 4: Process Final Result

🔗 Nodes:
8️⃣ Process Result (Code)
📥 Once complete, extracts:

• ✅ Status
• 🎞️ Output video URL
• 📊 Generation metrics
• ⏱️ Timestamps (created_at, completed_at)
• 🧩 Model used

Final output = direct video URL you can download/share 🎥

📊 Final Overview

🚀 Why This Workflow Rocks

• 🎥 Video from Image + Prompt → AI-powered video generation in minutes
• 🔄 Fully automated → from request to final video, no manual checks
• 🔑 Secure → API keys handled safely
• ⚙️ Customizable → tweak frames, FPS, prompt, seed

✨ With this workflow, you’ve got a personal AI video generator inside n8n — all you need to do is provide a prompt + input image/video, and you’ll get a fresh AI video link back.