H3 Continuity Studio gives MiniMax H3 a visual memory, so a room keeps its details when you cut away and come back
H3 Continuity Studio is a free, open-source ComfyUI node pack for building multi-shot sequences with MiniMax H3 on a timeline. Continuing clips carry context from the clip before, and a visual memory brings chosen moments of an earlier clip into a later shot, even after an exterior scene or a new camera angle.
What it does
The Timeline puts clips in boxes; a box set to continue carries context frames from the one before, and the Studio adds story, reference and timeline editing, plus nodes for saved segments, stills and H3 context windows. The optional H3 Story node plans and writes the Timeline through any OpenAI-compatible language-model endpoint, local or cloud. The included six-box demo sets up a detailed living room (sofa, cat, teapot, fireplace, mirror, fig), goes outside to a porch, then cuts back inside and to the room's corner view using memory of the first box.
Results and limits
The demo was rendered at 1024×576, 24 fps, with 39 carried context frames; an under-two-minute contest cut and the full demo are on the v0.1.0 release page (2 November). The author says it shows retained details, not perfect geometry or continuity, and the docs include seam and continuity checks and a retake flow.
Worth knowing
You need a current ComfyUI with working MiniMax H3 and its models (none are downloaded for you), and Context Windows needs a ComfyUI version with the core H3 Context Windows node. The Story writer sends the story text, and reference pictures if you allow it, to whatever endpoint you set. The code is MIT; MiniMax's optional H3 prompt guides are not included, and the H3 model's community licence excludes the EU, UK, South Korea and US unless you get a licence from MiniMax. An entry in Comfy's Open Source Higgsfield challenge.