Generate AI Video Avatars from URLs with HeyGen, Gemini & Upload to Social Media

This workflow turns any URL (news article, blog post, or even an n8n workflow page) into a vertical short video with your AI avatar explaining it ready for TikTok, Instagram Reels, and YouTube Shorts. It fetches the page, generates a tight 30–45s script and platform-optimized descriptions, captures a dynamic background of the page (animated scroll or static image), composes and renders the video with HeyGen (free split‑screen or paid clean cut‑out), and sends it to Upload-Post with an optional human review step.

Note: You can generate full videos end‑to‑end using free trials—no credit card required—for all APIs used in this template (Google Gemini, ScreenshotOne, HeyGen, Upload‑Post).*

Who Is This For? Creators & Marketers:** Explain articles, launches, and workflows without filming or editing. Media & Newsletters:** Turn breaking stories into clear, shareable shorts. Agencies:** Scale content creation with review gates and multi-account publishing. Founders & Product Teams:** Maintain an on-brand presence in minutes.

What Problem Does It Solve? Making platform-native explainers is slow and inconsistent. This workflow: Writes the script with AI:** ~30s hook-led monologue with key facts. Optimizes per platform:** Tailored captions for TikTok, Reels, and Shorts. Generates the video automatically:** Uses the page itself as background + avatar voiceover. Publishes everywhere:** Optional review, then one-click multi-platform posting.

How It Works URL Input: Paste any page to convert (article, blog, or workflow). AI Agent (Gemini): Reads the page and produces a single script (~30s) + platform-specific descriptions. Video Background: Animated scroll capture (9:16) or featured image via ScreenshotOne. HeyGen Composition & Render: Free: split-screen vertical (avatar bottom, background top). Paid: clean avatar cut‑out over video/image (background removal). Render & Poll: Waits for HeyGen to finish and retrieves the final MP4. Human Review (optional): Approve or reject in a simple form. Publish (Upload-Post): Uploads to TikTok, Instagram (Reels), and YouTube Shorts with AI-generated titles/descriptions.

Setup Credentials (all offer free trials, no credit card required): HeyGen API (X-Api-Key) + your avatar_id and voice_id. ScreenshotOne API key. Upload-Post (connect your social accounts). Google Gemini (chat model). Variables in “Set Input Vars”: workflow_url: page to convert. background_removal: true (paid) or false (free). background_type: video (animated scroll) or photo (static). Publishing: Choose platforms in Upload-Post; enable review if you want to approve before posting.

Requirements Accounts:** n8n, HeyGen, ScreenshotOne, Upload-Post, Google (Gemini). API Keys:** HeyGen, ScreenshotOne, Gemini; Upload-Post credentials. Assets:** An avatar and a voice available in HeyGen.

Features URL → Short in minutes:** 9:16 vertical (720×1280). Pro script with hook:** Clear, natural, ~30s. Two render modes:** Split-screen (free) or clean cut‑out (paid). Background from the page:** Animated scroll or main image. Human-in-the-loop:** Approval before going live. Multi-publish:** TikTok, Instagram Reels, YouTube Shorts via Upload-Post. Start free:** Generate videos with free trials across all APIs—no credit card required.