How Rubric Labs and Graphite leveraged LLMs to create personalized videos at scale

In 2023, Graphite celebrated GitHub users' contributions with a personalized AI-generated video called "Year in code." The project was built by Rubric using LangChain to generate the video manifest and Remotion for creating and playing the video. The tech stack also included GitHub GraphQL API, AWS Lambda, S3 storage, Three.js for 3D objects, Supabase for database and authentication, Next.js 13 for frontend, Vercel for hosting, Tailwind for styling, and Zod for schema validation. The architecture involved fetching user stats from GitHub, generating a video manifest with OpenAI's gpt-4-turbo model, mapping scenes to React components, rendering the video using Remotion lambda, and storing it in an S3 bucket.