Deterministic video composition from one JSON template — renders on Node, in the browser via WebAssembly, and fully on-device on React Native. No server, no upload, no generative model. Agent-callable over MCP.
Skill Claude CodeCodex
Use when creating or editing a video template JSON (the template descriptor), adding or changing sections/filters/maps/variables/transitions/looks/motion/audio/layers, or debugging template validation errors in ffmpeg-video-composer.
Skill Claude CodeCodex
Use when adding a segment type, platform adapter, editor manager, core service, or descriptor effect (look/grade/motion/section-audio field) in packages/ffmpeg-video-composer, or when wiring new dependencies into the tsyringe container.
Skill Claude CodeCodex
Use when working with FFmpeg across Node/Static/WASM, the PlatformBridge, the FFmpeg detection/fallback chain, or browser/React Native runtime constraints in ffmpeg-video-composer.
Skill Claude CodeCodex
Use when building, testing, linting, formatting, typechecking, or running any app or package in the ffmpeg-video-composer monorepo, or when looking for the right pnpm/vp command.
Skill Claude CodeCodex
Use when building, modifying, or consuming the on-device FFmpeg engine — the Rust crate packages/ffmpeg-engine, the leclap-ffmpeg Expo native module, the run/probe/version/cancel API, the uniffi bindings, build-engine.sh, or the FFmpeg-from-source toolchain in scripts/ffmpeg.
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: