I built a hook analyser for short form content - looking for feedback

Hi! I am prototyping an app that analyses the first 3 seconds of a short-form video to tell creators if their hook will stop the scroll or not. The app is currently built with this tech stack: Frontend/Deployment: Python & Streamlit Cloud Visual Analysis: OpenCV (calculates frame-by-frame motion energy/differencing in the first 3 seconds) Audio Analysis: OpenAI Whisper (calculates speech pacing and word-per-second density) AI Evaluation & Rewriting: Google Gemini with Pydantic str