RxFilm Studio is a single-window macOS app that combines video editing, audio scoring, narration, captioning, still generation, and rendering with an AI agent acting as a director. The interface stacks takes in reels and exposes dedicated workspaces: a music scorer (Lyria) to generate cues, a narrative editor for multi-speaker narration tuned line-by-line, a caption tool that transcribes, translates and retimes subtitles with VTT/SRT export, and an image pane for stills and reference art created inside the app. Everything is arranged around a Remotion timeline with a live 4K/60 fps preview so edits and previews happen without leaving the window.
The AI agent proposes concrete edits - caption retimes, score swaps, scene fades - and lets the user review changes before applying them, keeping an edit-first, review-later workflow. Practical details include 3840×2160, 60 fps reels, exportable subtitle formats (VTT/SRT), and direct rendering from the app. The macOS build is a free Apple Silicon download (v1.9.0, ~41 MB) with releases on GitHub under RxLab, targeting creators who want rapid, AI-assisted production of product videos without switching tools.
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