Gifski is a polished macOS application that converts video files into high-quality animated GIFs. The application uses a hybrid architecture: a SwiftUI frontend handles the user interface, video decoding (via AVFoundation), real-time preview compositing (via Metal shaders), and system integration (Share Extension, Shortcuts), while the core GIF encoding is performed by a companion Rust library (gifski-api) exposed through a C API. Key data flows involve decoding video frames, optional cropping/trimming/resizing, temporal denoising and palette quantization in the Rust engine, and finally writing the GIF output. The codebase demonstrates solid engineering with actor-based concurrency, comprehensive unit tests, and reusable UI components. However, it carries technical drift from macOS version workarounds and deprecated Rust API usage, and targets a future macOS version (26+) not yet generally available.