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

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Created by: Juan Carlos Cavero Gracia || carlosgracia

Juan Carlos Cavero Gracia

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Last update 2 days ago

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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

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

Setup

  1. 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).
  2. 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).
  3. 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.