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Generate AI video avatars from URLs with HeyGen, Gemini & upload to social media

Juan Carlos Cavero GraciaJuan Carlos Cavero Gracia
1314 views
2/3/2026
AIGenerative AIImage AnalysisGoogle GeminiVision
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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.

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

This n8n workflow automates the process of generating AI video avatars from provided URLs, leveraging Google Gemini for content extraction and HeyGen for video creation. It then prepares the generated video for potential social media upload.

What it does

This workflow streamlines the creation of engaging video content by:

  1. Triggering Manually: The workflow starts when manually executed.
  2. Initializing Data: Sets up initial data for the workflow, including a placeholder URL.
  3. Extracting Content with AI: Uses an AI Agent powered by Google Gemini to analyze the provided URL and extract relevant content.
  4. Parsing AI Output: Processes the AI Agent's output to extract structured data, likely including a script or key information for the video.
  5. Conditional Logic: Checks if the AI Agent successfully extracted a video script.
  6. Generating HeyGen Video (if script exists): If a script is successfully extracted, it makes an HTTP request to the HeyGen API to create an AI video avatar using the generated script.
  7. Waiting for Video Processing: Pauses the workflow to allow HeyGen to process and generate the video.
  8. Retrieving HeyGen Video Status: Makes another HTTP request to HeyGen to check the status of the video generation.
  9. Preparing for Social Media (if video ready): If the video is ready, it extracts the video URL and prepares the data for subsequent social media upload (though the upload itself is not included in this specific JSON).

Prerequisites/Requirements

To use this workflow, you will need:

  • n8n Instance: A running n8n instance.
  • Google Gemini API Key: For the "Google Gemini Chat Model" node.
  • HeyGen API Key: For the "HTTP Request" nodes interacting with the HeyGen API.
  • HeyGen Account: To generate AI video avatars.

Setup/Usage

  1. Import the workflow: Download the provided JSON and import it into your n8n instance.
  2. Configure Credentials:
    • Set up your Google Gemini credentials for the "Google Gemini Chat Model" node.
    • Set up your HeyGen API key as a credential for the "HTTP Request" nodes that interact with HeyGen.
  3. Edit Fields (Set): In the "Edit Fields" node (ID 38), update the url field with the actual URL you want the AI to process.
  4. Execute the workflow: Click "Execute Workflow" to run the process.
  5. Review Output: The workflow will output the HeyGen video URL if successful, which can then be used for social media posting or other purposes.

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