Video Understanding Multi-provider video understanding with automatic fallback and model selection. Quick Start Provider Hierarchy Automatically selects the best available provider: | Priority | Provider | Capability | Env Var | Default Model | |----------|----------|------------|---------|---------------| | 1 | Gemini | Full video | | gemini-3-flash-preview | | 2 | Vertex AI | Full video | | gemini-3-flash-preview | | 3 | OpenRouter | Full video | | google/gemini-3-flash-preview | | 4 | FFMPEG | Frames + ASR | None (requires ffmpeg + whisper) | scene | | 5 | OpenAI | ASR only | | whisper-1 |…