tl;dr: MiniMax released H3, an open-weights video model with day-zero ComfyUI support that generates up to 2K, 15-second clips with native stereo audio from text, image, video, or audio inputs. It supports text-to-video, image-to-video, first/last-frame control, and reference-to-video (including motion transfer). Through pruning modulation weights into a lookup table, int8 quantization, and custom kernels, ComfyUI shrunk the footprint 66% (123.6GB → 42.5GB), enabling it to run on a RTX 3060.