Generate Custom AI Videos with Digital Avatars using HeyGen API

🎥 n8n Workflow: Generate AI Videos with HeyGen 🚀 Overview This automation connects directly to HeyGen's powerful AI video generation platform. It allows you to programmatically create videos with digital avatars and voiceovers, perfect for scaling your content creation for social media, marketing campaigns, or personalized messages without ever opening a video editor. 😩 The Problem Creating video content is incredibly time-consuming and expensive. You have to write scripts, record audio, find actors or create complex animations, piece everything together in an editor, and then wait for it to render. Every minor change or personalization requires repeating the entire frustrating process. T

Help me set up the n8n workflow "Generate Custom AI Videos with Digital Avatars using HeyGen API" (https://n8n.io/workflows/4622). 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.