Extend and merge UGC viral videos using Kling 2.1, then publish on social media

This workflow automates the full pipeline for extending short Viral UGC-style videos using AI, merging them, and finally publishing the output to cloud storage or social media platforms (TikTok, Instagram, Facebook, Linkedin, X, and YouTube). It integrates multiple external APIs (Fal.ai, Runpod/Kling 2.1, Postiz, Upload-Post, Google Sheets, Google Drive) to create a smooth end-to-end video-generation system. Key Advantages 1. ✅ Full End-to-End Automation The workflow covers the entire process: Read inputs Generate extended clips Merge them Save outputs Publish on social platforms No manual intervention required after starting the workflow. 2. ✅ AI-Powered Video Extension (Kling 2.1 or other

Help me set up the n8n workflow "Extend and merge UGC viral videos using Kling 2.1, then publish on social media" (https://n8n.io/workflows/11710). It uses: Google Sheets, HTTP Request, Google Drive, Code. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.