hotchilianalyticsllc.mintlify.app• Jan 15, 2026• 1 min read
Show HN: VerityNgn–Open-source AI that fact-checks YouTube videosI built an open-source system that generates truthfulness reports for YouTube videos using multimodal AI and a counter-intelligence approach.*Live demo:* https://verityngn.streamlit.app*Documentation:* https://hotchilianalyticsllc.mintlify.app*Repo:* https://github.com/hotchilianalytics/verityngn-oss*Substack Article:* https://ajjcop.substack.com/p/i-built-an-ai-that-fact-checks...### The ProblemExisting fact-checking tools only analyze text transcripts. They miss on-screen graphics, visual demonstrations, and the multimodal nature of video. Worse, when you search for evidence, you often get promotional press releases that confirm false claims because the misinformation ecosystem is SEO-optimized.### How VerityNgn Works1. *Multimodal analysis*: Uses Gemini 2.5 Flash (1M token context) to analyze video frames at 1 FPS — audio, OCR, visuals, and transcript together. 2. *Intelligent Segmentation*: Automatically calculates optimal segment sizes based on model context windows (reduces API c