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 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 avatarid and voiceid. - ScreenshotOne API key. - Upload-Post (connect your social accounts). - Google Gemini (chat model). 2. Variables in “Set Input Vars”: - workflowurl: page to convert. - backgroundremoval: true (paid) or false (free). - backgroundtype: 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.