Publish image & video to multiple social media (X, Instagram, Facebook and more)

This Workflow streamlines the process of publishing posts (image or video) to multiple social media platforms using a unified form and a third-party API service called Upload-Post. The automation starts with a form trigger, allowing users to submit content (text and media) through a simple frontend interface. Users select the platform (Instagram, LinkedIn, Facebook, X, TikTok, Threads), choose the profile name, write a caption, and upload a photo or video. How It Works Automates cross-platform social media posting via Upload-Post, handling both images (JPEG) and videos (MP4). Here’s the process: Trigger: A form submission captures user inputs: Platform (Instagram, LinkedIn, Facebook, X, TikT

Help me set up the n8n workflow "Publish image & video to multiple social media (X, Instagram, Facebook and more)" (https://n8n.io/workflows/3669). It uses: HTTP Request. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.