Deep-Live-Cam is a real-time face swapping desktop application that uses ONNX Runtime with insightface models to swap faces in live webcam feeds or pre-recorded images/videos. The core pipeline involves face detection (RetinaFace), face recognition (ArcFace), and a face swap model (inswapper_128), with optional face enhancement via GFPGAN or GPEN-BFR ONNX models. The application provides a PySide6 GUI for selecting source/target faces, toggling options (mouth mask, many faces, Poisson blending, sharpening, temporal interpolation), and managing camera selection. It supports multiple execution providers: CUDA (NVIDIA), CoreML (Apple Silicon), DirectML (AMD/Intel), OpenVINO (Intel), and CPU fallback. Video processing can run in-memory via FFmpeg pipes (avoiding disk I/O) or via traditional frame extraction to PNG files. The architecture is modular: frame processors (face swapper, enhancers) follow a common interface, and the codebase includes optimizations for Apple Silicon (CoreML subgraph optimization, Pad decomposition, Shape/Gather folding) and CUDA (IO binding, CUDA graphs). The project also includes a benchmark pipeline and unit tests for core components.