Generate Videos from Images with Wan 2.2 I2V A14B AI Model

Description

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

| Section | What Happens | Why It’s Useful |
| --------- | ------------------------------ | --------------------------------- |
| 🟢 Auth | Manual Trigger + API Key | Secure, easy start |
| 🔵 Send | Create Prediction + Extract ID | Kicks off video generation |
| 🟣 Poll | Wait + Check Status + IF | Auto-checks progress until done |
| 🟡 Result | Process Result | Gives final video link + metadata |

🚀 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.