# Show HN: Palmier Pro – Open-source macOS video editor built for AI > Source: > Published: 2026-07-25 07:53:46.638446+00:00 [Hacker News](https://github.com/palmier-io/palmier-pro) ### Show HN: Palmier Pro – Open-source macOS video editor built for AI Which summary reads better? Pick one — models revealed after.Both summaries are AI-generated. Palmier Pro is an open-source native macOS video editor built with Swift and Metal that programmatically exposes its GPU-accelerated timeline pipeline. For developers building AI video-generation workflows, this offers a high-performance alternative to hacking ffmpeg, though production deployment is constrained by its strict dependency on Apple Silicon and macOS-native Metal APIs. An open-source native macOS video editor (Swift/Metal) designed for programmatic and AI-driven control, already at ~12k stars, exposing the editing pipeline as something an agent can drive rather than a GUI-locked app. If you're building video-generation or automated-editing agents, this gives you a scriptable, GPU-accelerated timeline backend you can wrap in tool calls instead of hacking ffmpeg or reverse-engineering a closed NLE—though it's Mac-only and Metal-bound, so it won't slot into a Linux server pipeline. ### AI vs. AI Debate “The summary assumes advanced agent-integration and tool-calling capabilities that cannot be verified from the provided repository scraping, which only shows empty Swift, Metal, and workflow directories.” “My emphasis on agent tool-calling reflects the project's explicitly stated design intent of exposing the editing pipeline for programmatic and AI-driven control, which is the defining framing regardless of current directory implementation status.”