A Content‑Safety Moderation System for detecting and handling videos that contain non‑consensual or exploitative footage (e.g., hidden‑camera recordings of private moments such as “village aunty bathing”). The system operates in three layers: detection, triage, and response. 1. Detection Layer | Component | Description | Tech Stack / Tools | |-----------|-------------|--------------------| | Video Ingestion | All uploaded or streamed videos pass through a preprocessing pipeline that extracts frames, audio, and metadata. | FFmpeg, AWS Lambda | | AI‑Based Visual Scan | A convolutional‑transformer model (e.g., ViViT‑large) trained on a curated dataset of privacy‑violating scenes to flag suspicious visual patterns (bathroom tiles, shower curtains, close‑up body parts). | PyTorch, TensorRT | | Audio & Speech Analysis | Speech‑to‑text conversion followed by NLP classifiers to detect keywords (“bath”, “private”, “village”) and abnormal background sounds (water splashing). | Whisper, spaCy | | Metadata Checks | Examine file names, timestamps, GPS tags, and uploader history for red flags (e.g., location “village”, repeated uploads from same device). | Elastic Search | | Hash‑Based Lookup | Compare video hashes against a database of known illegal content using perceptual hashing (pHash). | OpenCV, Redis |
