spiritform/comfyblockout

ComfyBlockout is a 3D editor node for ComfyUI, the node based interface many people use for AI image and video generation. It lets you build a rough blockout scene using simple shapes, imported 3D models, or gaussian splats, animate both a camera path and individual objects over time, and then send the rendered video, a start image, and a text prompt straight into downstream AI models such as Seedance, Nano Banana, or Flux. Once you drop the node onto your canvas, it shows a live three.js preview right inside the node, with basic playback controls and a scrub timeline, so you can check your scene without leaving the graph. Clicking Edit opens a fullscreen editor with the complete toolset: adding primitive shapes like cubes and spheres, importing meshes in formats such as GLB, FBX, or OBJ, adding particle emitters, animating objects, sculpting a camera path, and saving the whole thing as a named project. Animation works through keyframes on both the camera and individual objects, each with adjustable easing, and a special waypoint type that bends a smooth curve through a point without pinning it to an exact time. The timeline shows keyframes as diamonds you can click, drag, or multi-select, and a properties panel on the right adapts to whatever is selected, whether that is the whole scene, the camera, or a single object. When you record, the scene is captured and converted into an mp4 using ffmpeg, with framing presets for common aspect ratios like 16:9 or 9:16. Projects are saved on the server per node, including any imported assets, so reopening a ComfyUI workflow restores the full scene exactly as you left it. The full README is longer than what was shown.